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SR - 146 SR - 146
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THE ISRAEL ELECTRIC CORPORATION LTD. PLANNING DEVELOPMENT AND TECHNOLOGY DIVISION
No part of this Tender may be reproduced, stored in retrieval system, or transmitted, in any form or by any means, electronic, mechanical, photocopying, recording, or otherwise, or used for purposes other than participation in this tender, without the prior written permission of the RELIABILITY & H.V. EQUIPMENT DEPARTMENT Israel Electric Corporation (I.E.Co.)
SPECIFICATION
SR - 146 FOR
170 kV
VOLTAGE TRANSFORMERS
SR - 146 SR - 146
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THE ISRAEL ELECTRIC CORPORATION LTD. PLANNING DEVELOPMENT AND TECHNOLOGY DIVISION
RELIABILITY AND H.V. EQUIPMENT DEPARTMENT
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Version A
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SIGNATURE�
PREPARED: L. Eskenasy C. Marchini
11. 15
CHECKED:� DR. H. Ben Haim 11. 15
APPROVED:� D. Amdur 11. 15
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NOVEMBER 2015
SPECIFICATION
SR - 146 FOR
170 kV
VOLTAGE TRANSFORMERS
I�
TABLE OF CONTENTS 1. PURCHASER ...................................................................................................................................................... B-1�
2. NAME OF PROJECT ........................................................................................................................................ B-1�
3. LOCATION OF PROJECT ............................................................................................................................... B-1�
4. SCOPE OF WORK & SUPPLY ........................................................................................................................ B-1�
6. CYBER & INFORMATION SECURITY ........................................................................................................ B-3�
7. QUALITY MANAGEMENT SYSTEM & QUALITY CONTROL ............................................................... B-3�
7.1 QUALITY MANAGEMENT SYSTEM ........................................................................................................ B-3�
7.2 QUALITY CONTROL .................................................................................................................................. B-3�
9.1 GENERAL ..................................................................................................................................................... B-5�
9.2 TECHNICAL DOCUMENTS TO ACCOMPANY THE PROPOSAL .......................................................... B-5�
9.3 TECHNICAL DOCUMENTS AFTER NOTIFICATION OF AWARD ........................................................ B-8�
10.1 ENVIRONMENTAL CONSIDERATIONS & SERVICE CONDITIONS ................................................ B-10�
10.1.1 SYSTEM DATA ................................................................................................................................... B-10�
10.7.2 SPARE PARTS ..................................................................................................................................... B-49�
11.1 TESTS – GENERAL .................................................................................................................................. B-51�
II�
11.2 TYPE TESTS.............................................................................................................................................. B-52�
11.4 SPECIAL TESTS ....................................................................................................................................... B-58�
14. NAME PLATE ................................................................................................................................................ B-65�
15.1 TERMS AND CONDITIONS FOR 170 KV VOLTAGE TRANSFORMERS PURCHASING ................ B-66�
15.2 EVALUATION OF CONTRACTOR’S TECHNICAL PROPOSAL ......................................................... B-66�
15.3 COMMENTS BY MANUFACTURER ON ANNEXURE “B” AND SUMMARY OF DATA ................. B-67�
15.4 DEVIATIONS FROM REQUIREMENTS ................................................................................................ B-68�
15.5 CONFORMITY WITH PROPOSAL DOCUMENTS ................................................................................ B-69�
SUMMARY OF PRICES ....................................................................................................................................... C-1�
TYPE AND SPECIAL TESTS OF VOLTAGE TRANSFORMERS ..................................................................................... A2-1�
TYPE TESTS FOR PORCELAIN INSULATORS ...................................................................................................... A3-1�
TYPE TESTS FOR COMPOSITE INSULATORS ...................................................................................................... A4-1�
MINERAL INSULATING OIL SUPPLIED FOR/WITHIN NEW ELECTRICAL EQUIPMENT ................................................ A5-1�
CALCULATION OF SAFETY FACTOR OF VT WITH PORCELAIN INSULATORS INCLUDING STEEL SUPPORTING
STRUCTURE AND BOLTS ....................................................................................................................................... A6-1�
CALCULATION OF SAFETY FACTOR OF VT WITH SILICON RUBBER INSULATORS INCLUDING STEEL
SUPPORTING STRUCTURE AND BOLTS .................................................................................................................. A7-1�
RAM FOR 170 KV VOLTAGE TRANSFORMER OIL INSULATED ........................................................................... A8-1�
RAM FOR 170 KV VOLTAGE TRANSFORMER SF6 GAS INSULATED .................................................................. A9-1�
SPECIFICATION FOR PAINTING ON GALVANIZED SURFACES BY WET/ELECTROSTATIC POWDER PAINTING ... A10-1�
EVK-8469 STEEL SUPPORTING STRUCTURE FOR MOUNTING OF VOLTAGE TRANSFORMERS ...................... B-45
ANNEXURE “B” AND SUMMARY OF DATA SPECIFICATION SR - 146
B-1
SPECIFICATION FOR 170 kV
INDUCTIVE VOLTAGE TRANSFORMERS
1. PURCHASER
The Israeli Electric Corporation Limited.
2. NAME OF PROJECT
170kV Inductive Voltage Transformers.
3. LOCATION OF PROJECT
The Voltage Transformers will be installed in outdoor substations.
4. SCOPE OF WORK & SUPPLY
Design, develop, manufacture, test, preserve, pack, furnish FCA/FOB/DDP with export
packing Voltage Transformers.
4.1 PROJECT DESCRIPTION
New 170kV Substations
4.2 SCOPE OF SUPPLY
4.2.1 ITEM 1: 170 kV Voltage Transformers, ratio 161/�3//0.115/�3//0.115/�3, with two secondary windings with accuracy class 0.2(3P) and 0.5(3P).
4.2.2 ITEM 2: 170 kV Voltage Transformers, ratio 161/�3//0.115/�3//0.115/�3//0.115/�3, with three secondary windings with accuracy class 0.2(3P), 0.5(3P) and 0.5(3P).
4.2.3 ITEM 3: Steel supporting structure for mounting of VOLTAGE TRANSFORMERS on the foundations according to drawing EVK-8469.
The Voltage Transformers can be supplied in the following alternatives:
- Alternative A: Oil insulated VT with porcelain insulator.
- Alternative B: SF6 gas insulated VT with porcelain insulator.
- Alternative C: Oil insulated VT with composite insulator.
- Alternative D: SF6 gas insulated VT with composite insulator.
ANNEXURE “B” AND SUMMARY OF DATA SPECIFICATION SR - 146
B-2
4.3 MANUFACTURER/CONTRACTOR
MANUFACTURER’S OFFERED DATA AND PARAMETERS SHOULD BE FILLED IN AGAINST PURCHASER’S REQUIRED VALUES - AS WELL AS IN THE ABSENCE THEREOF UNDER ALL RELEVANT PARAGRAPHS IN THE FREE COLUMNS ON THE RIGHT HAND SIDE.
A DEFINITE ANSWERS (YES OR NO) OR APPROPRIATE COMMENTS SHALL BE GIVEN TO ALL OTHER REQUIREMENTS.
REQUIRED OFFERED
4.3.1 Manufacturer's name and address ................................................................
4.3.2 Contractor's name and address (if it is different from Manufacturer’s) ................................................................................................
4.3.3 Type of Inductive Voltage Transformer (denomination) ................................
4.3.3.1 ITEM 1:
4.3.3.1.1 Alternative A ................................................................................
4.3.3.1.2 Alternative B: ...............................................................................
4.3.3.1.3 Alternative C: ...............................................................................
4.3.3.1.4 Alternative D: ...............................................................................
4.3.3.2 ITEM 2:
4.3.3.2.1 Alternative A ................................................................................
4.3.3.2.2 Alternative B: ...............................................................................
4.3.3.2.3 Alternative C: ...............................................................................
4.3.3.2.4 Alternative D: ...............................................................................
4.3.4 The offered type of VT shall be a proven design (not a prototype) with high experience in work (Manufacturer declaration) ................................
�
4.3.5 Contractor’s proposal number ................................................................
4.3.6 Validity of proposal ................................................................................................
4.3.7 List of all subcontractors or subsuppliers, including name, address and status of QMS versus ISO 9001:2008 standards and attach a copy of their Q.M.S. certificate.
ANNEXURE “B” AND SUMMARY OF DATA SPECIFICATION SR - 146
B-3
5. TERMINAL POINTS
Not Applicable (NA)
6. CYBER & INFORMATION SECURITY
Not Applicable (NA)
7. QUALITY MANAGEMENT SYSTEM & QUALITY CONTROL
7.1 QUALITY MANAGEMENT SYSTEM
7.1.1 Definitions:
7.1.1.1 Certification Body (CB) – An independent external body authorized to confirm that the tenderer/supplier's Management System conforms with the requirements specified in the standard, by issuing a certificate. The Certification Body should be qualified to certify by an Accreditation Body.
7.1.1.2 Accreditation Body (AB) – An independent body, being a member of the International Accreditation Forum Multilaterial Arrangement – IAF MLA, having authority to formally approve the competence of certification body providing certification services.
7.1.2 The tender/supplier shall have a Quality Management System (QMS) having a certificate evidencing compliance with the requirements of the valid revision of ISO 9001 or any other Management System standard specifically indicating that it implements the requirements of ISO 9001 which are valid on the date that specified for submission of the proposal.
7.1.3 Approval of conformance with the ISO 9001 requirements, as indicated in clause 7.1.2 above, shall be in a form of a certificate issued by a Certification Body [(CB) see 7.1.1.1] which is a qualified by an Accreditation Body [(AB), see 7.1.1.2].
7.1.4 The certificate should bare the logo of the CB and of its Accreditation Body and/or the logo of the IAF MLA.
7.1.5 The certificate shall be valid on the date set for submission of the proposal. The certificate shall be valid for the scope of activities requested in the request for proposal.
7.2 QUALITY CONTROL
The quality control requirements should be according to specification "Q-App-02 Rev. 4" (See appendix 1)
7.3 INTERCHANGEABILITY
The Inductive Voltage Transformers of the same type and ratings shall be interchangeable both electrically and mechanically with each other, and when so interchanged shall perform their function equally well in every respect.
8. STANDARDS & CODES
8.1 Unless otherwise specified all equipment shall be designed, constructed and tested in accordance with the requirements of the latest relevant published Recommendations of the International Electrotechnical Commission (IEC) as amended up to date.
8.2 All aspects, tests, etc. not covered by IEC Recommendations, should be executed according to the latest published issue of official, or otherwise approved standards of Manufacturer’s country. In such cases, the standards themselves shall be supplied.
ANNEXURE “B” AND SUMMARY OF DATA SPECIFICATION SR – 146
B-4�
8.3 In case the requirements in this Specification differ from those in IEC Publications in any respects, the Voltage Transformer shall conform to the requirements in this Specification concerning that item.
8.4 The terminology used in this Specification, is, except where otherwise indicated, in accordance with IEC Publications:
1. IEC 61869-1/2007 - Instrument transformers.
2. IEC 61869-3/2011 – Inductive Voltage transformers.
3. IEC 62155/2003 -Hollow pressurized and unpressurized ceramic and glass insulators for use in electrical equipment with rated voltages greater than 1000 V.
4. IEC 61462/2007- Composite hollow insulators.
5. IEC 62271-207/2012- Seismic qualification for gas-insulated switchgear assemblies for rated voltages above 52 kV.
6. IEC 60721 - Classification of environmental conditions.
7. IEC 60529/2013 - Degrees of protection provided by enclosures (IP Code).
8. IEC 62262/2002 - Degrees of protection provided by enclosures for electrical equipment against external mechanical impacts (IK code).
9. IEC 60137/2008 - Insulated bushings for alternating voltages above 1 000 V.
10. IEC 62039/2007 - Selection guide for polymeric materials for outdoor use under HV stress.
11. IEC 62217/ 2012- Polymeric HV insulators for indoor and outdoor use.
12. IEC 60085/2007 - Thermal evaluation and designation.
13. IEC 60376/2005 - Specification of technical grade sulfur hexafluoride (SF6) for use in electrical equipment.
14. IEC 60815 - Selection and dimensioning of high-voltage insulators intended for use in polluted conditions.
15. IEC 62073/2003 - Guidance on the measurement of wettability of insulator surfaces.
16. IEC 60417/2004 - Graphical symbols for use on equipment.
17. IEC 60296/2012 - Fluids for electrotechnical applications – Unused mineral insulating oils for transformers and switchgear.
18. IEEE 987/2001- Guide for Application of Composite Insulators.
19. IEEE 693/2005 - Seismic Design of Substations.
20. IEEE 57.13/2008 - Standard Requirements for Instrument Transformers.
ANNEXURE “B” AND SUMMARY OF DATA SPECIFICATION SR – 146
B-5
9. TECHNICAL DOCUMENTATION
MANUFACTURER’S OFFERED DATA AND PARAMETERS SHOULD BE FILLED IN AGAINST PURCHASER’S REQUIRED VALUES - AS WELL AS IN THE ABSENCE THEREOF UNDER ALL RELEVANT PARAGRAPHS IN THE FREE COLUMNS ON THE RIGHT HAND SIDE.
A DEFINITE ANSWERS (YES OR NO) OR APPROPRIATE COMMENTS SHALL BE GIVEN TO ALL OTHER REQUIREMENTS.
REQUIRED OFFERED
9.1 GENERAL
9.1.1 All data and descriptive material shall be in English ................................
9.1.2 All documents shall be submitted in doc or pdf formats ................................
9.1.3 All drawings shall be submitted in dwg and pdf formats................................
9.2 TECHNICAL DOCUMENTS TO ACCOMPANY THE PROPOSAL
9.2.1 Description and drawings of complete voltage transformer, showing all components and the corresponding identification number ................................
9.2.2 Description of method of sealing: ................................................................
9.2.11 Drawing of the nameplate .....................................................................................
ANNEXURE “B” AND SUMMARY OF DATA SPECIFICATION SR - 146
B-6�
REQUIRED OFFERED
9.2.12 Final factory test reports ........................................................................................
9.2.13 Example of routine test report for offered type..............................
9.2.14 Type test report (authority1 number and date) for offered type, including test circuit, instruments used and description of method.
9.2.15 We are interested in test values for offered type of VT as supplied to various customers (routine and type tests). Test reports for other types than offered can be considered only if guaranteed with those for offered type ................................................................................................
9.2.16 Test reports to prove that porcelain insulator has successfully withstood all relevant tests according to IEC 62155 ................................
9.2.17 Test reports to prove that composite insulator has successfully withstood all relevant tests according to IEC 61462
9.2.18 Drawings and description of handling and storage ................................
9.2.19 Drawings and description of packing & delivery .....................................................
9.2.20 Manufacturer's requirements for :
9.2.20.1 Prolonged storage (2-3 years) before erection, taking into account the specific conditions under clause 10.1 ....................................
9.2.20.2 Transport on roads and on site ....................................................
9.2.22 Details of shock indicators .....................................................................................
9.2.23 A list of VT external metal parts which should be painted and painting instruction for Purchaser approval .............................................................
9.2.24 General instruction books for erection, operation and maintenance ................................................................................................
9.2.25 Customer list for the last five years including quantities and types ........................
9.2.26 A list of recommended special tools and instruments necessary for erection, maintenance and repair of the VT’s ...........................................................
1 In case tests have been performed in another laboratory than Manufacturer’s, please
indicate.
ANNEXURE “B” AND SUMMARY OF DATA SPECIFICATION SR - 146
B-7�
REQUIRED OFFERED
9.2.27 A list of necessary accessories for lifting ...............................................................
9.2.28 A list of recommended spare parts (including total quantities, number of catalog and itemized prices) for the amount of the VT's indicated in this Specification ................................................................
9.2.29 Cross-section and explosion drawings for all spare parts ................................
9.2.30 A list of all parts which could wear out after 5 years, 10 years and 20 years of operation acc. to Manufacturer or users experience .............................
9.2.31 A list of all gaskets and sealing rings including location, dimensions, number of catalogue, resilience properties and duration of conservation storage without loss of qualities ..........................................................
9.2.32 A list of all bolts used, including dimensions, number of catalogue, material, type of thread, maximum torque for fastening. ................................
9.2.34 A valid certificate demonstrating certification to ISO 9001:2008 and QMS documents as per cl 7.1 and other quality documents as follows:
9.2.34.1 Quality plan for the validation and during manufacturing and inspection testing.
9.2.34.2 Acceptance test procedures for material and sub-assemblies…
9.2.34.3 Inspection, test plan and test procedures .....................................
9.2.34.4 Design Control Procedures ..........................................................
9.2.34.5 Qualification of subcontractor's Procedures ..................................
9.2.35 A list of optional items ...........................................................................................
9.2.36 Details about environmental management system (EMS) according to ISO 14001 ................................................................................................
9.2.37 An environmental product declaration (EPD) approved and certified by an accredited certification body. The calculation will take into consideration the requirements for EPD acc. to ISO 14025. ................................................................................................
9.2.38 Instruction concerning disassembly and end of life procedures for different components of the equipment (composition, weight, toxicity etc) .........................................................................................................................
ANNEXURE “B” AND SUMMARY OF DATA SPECIFICATION SR - 146
B-8�
REQUIRED OFFERED
9.3 TECHNICAL DOCUMENTS AFTER NOTIFICATION OF AWARD
9.3.1 After notification of award, Contractor shall, within 30 days of the date of award, submit to the Purchaser for approval one (1) CD including the files of drawings in format DWG and PDF, covering the following information : ..............................................................................................
9.3.1.1 Descriptions, general outline drawings and relevant cross sections of the VT showing weights forces, details and anchor bolts, major dimensions, mounting details and locations of all Purchaser’s main terminal connections and locations of conduit entrance plate, for secondary connections. Full description of terminals (material, shape, effective cross section) shall be given ................................
9.3.1.2 Detailed drawings for execution of steel supporting structure including dimensions, material and type of protection against corrosion, input data for calculation of foundations and anchor bolts. .............................................................................................
9.3.1.3 Cross sections through VT's components (especially to those, which should be periodically inspected) shall be provided, as well as a full list of same. The list should enable easy location of components and shall include Manufacturer’s catalogue numbers for all items, with indications of quantities per VT's. Easy identification of the drawings pertaining to the items in the list is required .........................................................................................
9.3.1.4 Description and drawing of the insulators from insulators Manufacturer ................................................................................. Test report shall be presented ......................................................
9.3.1.5 Schematic and detailed wiring diagram ..........................................
9.3.2 Manufacturer is free to supply any additional information considered necessary for clarifying various aspects of transformer performance, operation, maintenance etc ......................................................................................
9.3.3 Purchaser reserves himself the right to require all necessary additional data, descriptions, drawings, etc. that may contribute in completing information supplied by Manufacturer about the Voltage Transformer and steel pedestal ................................................................
9.3.4 If the drawings are returned by the Purchaser and stamped "approved except as noted", Contractor shall make corrections per Purchaser's marking and shall resubmit required copies of the corrected documents as stated above. ................................................................
ANNEXURE “B” AND SUMMARY OF DATA SPECIFICATION SR - 146
B-9�
REQUIRED OFFERED
9.3.5 After approval of the above drawings, Contractor shall submit to the Purchaser for approval one (1) CD of complete instruction books as may be required for erecting, operating, and maintaining the equipment. The instructions shall include recommended detailed procedures for commissioning and periodic testing and all pertinent test report ................................................................................................
9.3.6 After approval of the above drawings and instruction books, but not later than two (2) months after the date of award, Contractor shall submit to the Purchaser the following:................................................................
9.3.6.1 One (1) CD with the files of drawings in format DWG and PDF ......
9.3.6.2 One (1) CD of complete instruction books, as may be required for erecting, operating and maintaining equipment .............................
9.3.7 Instruction books shall include such drawing lists, performance test curves, lists of parts, etc. as may be required to give Purchaser complete information for the ordering of spare parts ................................
9.3.8 All descriptive materials (lists, instruction books, etc.) should be numbered and dated for easy identification and reference purposes .......................
9.3.9 All data and descriptive material in the above drawings and instruction books shall be in English. All dimensions shall be shown in metric units ................................................................................................
9.3.10 In addition to the drawing requirements, Contractor shall furnish a comprehensive outline as to the extent of field fabrication required and as to all temporary wiring, disassembling, reassembling, welding, cleaning, checking, inspection, painting, testing, etc., required to be done by the Erector ................................................................................................
9.3.11 All documents and drawings shall be provided with number of Purchaser order ................................................................................................
9.3.12 Routine, type and special test reports of the VT’s, as well as the insulators tests and oil or SF6 gas, shall be submitted for approval, one month before delivery, in one (1) CD. The shipment cannot be realized before test approval ....................................................................................
9.3.13 Commissioning program in one (1) CD will be sent for approval three months before delivery ....................................................................................
9.3.14 After order the Contractor shall supply a CD with details about installation, safety rules for handling, VT's maintenance procedures and trouble shooting ................................................................................................
ANNEXURE “B” AND SUMMARY OF DATA SPECIFICATION SR – 146
B-10
10. TECHNICAL REQUIREMENTS
MANUFACTURER’S OFFERED DATA AND PARAMETERS SHOULD BE FILLED IN AGAINST PURCHASER’S REQUIRED VALUES - AS WELL AS IN THE ABSENCE THEREOF UNDER ALL RELEVANT PARAGRAPHS IN THE FREE COLUMNS OF THE RIGHT HAND SIDE. A DEFINITE ANSWERS (YES OR NO) OR APPROPRIATE COMMENTS SHALL BE GIVEN TO ALL OTHER REQUIREMENTS.
REQUIRED OFFERED
10.1 ENVIRONMENTAL CONSIDERATIONS & SERVICE CONDITIONS
All alternatives
10.1.1 SYSTEM DATA
10.1.1.1 Rated system voltage (line to line) (kV) ................................ 161
10.1.1.2 Highest system voltage (line to line) (kV) 170
10.1.1.3 Neutral connection in the 170 kV systems ................................effectively earthed
10.1.2.1 Long periods without rain, alternating with high humidity as experienced in coastal or desert areas in this country ....................................................................................
10.1.2.2 Permissible ambient air temperature:
10.1.2.2.1 Maximum (0C) ................................................................ +50 �
10.1.2.5 Low/high air pressure (KPa) ........................................................84/106
10.1.2.6 Solar radiation: Heating effects of solar radiation (W/m2)
1120
10.1.2.7 Maximum wind velocity measured 10m above grade (bare area) at 3 sec duration (m/sec)2 ................................
44
10.1.3 ENVIRONMENTAL CONDITIONS
10.1.3.1 Environmental parameters according to: ................................ IEC
60721-3-4
10.1.3.2 Severe atmospheric and industrial air pollution, dust, salt spray and sandstorms .............................................................
10.1.3.3 Water from sources other than rain : Spraying water and water jets with water velocity (m/sec) ................................
15
10.1.3.4 Chemically active substances according to: ................................Table IV 4C3
10.1.3.5 Mechanically active substances according to: ..............................Table V 4S3
10.1.4 SPECIAL REQUIREMENTS FOR ENVIRONMENTAL PROTECTION
10.1.4.1 Due to the severe environmental conditions to which the equipment may be subject during its service life, the following requirements for its protection form an integral part of the specification and are in addition to the standard design and protective measures which the manufacturer would normally invoke for these conditions:
2 Considering a 50 years mean return period
ANNEXURE “B” AND SUMMARY OF DATA SPECIFICATION SR - 146
B-12�
REQUIRED OFFERED
10.1.4.1.1 When dimensionally and functionally allowable, all steel components of the equipment are to be hot dip galvanized according to ASTM A123 or ASTM A386 or to Israeli Standard 918. The thickness of the zinc
shall be at least 100 �m on average with no
measured thickness to be less than 90 �m.
If dimensional or functional requirements do not allow hot dip galvanizing, steel parts will be electrolytically zinc plated to a minimum measured
thickness of 20 �m. Hot dip galvanized steel will be given a protective paint cover using a zinc dust/zinc oxide primer according to the best commercial practice. Zinc plated steel will be chromate to ASTM B201 Olive Drab finish, or equivalent standard and finish. Metal spraying may be used for protecting steel components, only after approval by the Purchaser.
10.1.4.1.2 Bolts, nuts and washers greater than 1/2" shall be hot dip galvanized according to ASTM A 394 or equivalent. Bolts, nuts and washers up to 1/2" shall be electrolytically zinc plated according to ASTM A 164 or equivalent to a minimum plate thickness of
20�m. Hot dipped as well as electrolytically galvanized nuts, bolts and washers shall be passivated according to ASTM B 201 Olive Drab finish, or equivalent standard and finish.
10.1.4.1.3 Components such as springs, pins and those for which a tight maintained dimensional tolerance is required shall be made of stainless steel. The preferred stainless steel is an austenitic grade; however, if physical requirements are overriding, other stainless steel grades will be acceptable. Austenitic grades will be subject to a solution quenching. Prior to being placed into service all stainless steel components will be cleaned and passivated.
10.1.4.1.4 All aluminum components shall be fabricated from grades of aluminum which show resistance to salt spray and moist conditions; e.g., Al-Mg base alloys. Aluminum-Copper Alloys are not acceptable. After fabrication, all aluminum components shall be anodized to ASTM B 580 Grade 4, or equivalent.
10.1.4.1.5 All copper or copper alloy components shall be electrolytically tinned to ASTM B 579 Grade 4, or equivalent.
ANNEXURE “B” AND SUMMARY OF DATA SPECIFICATION SR - 146
B-13�
REQUIRED OFFERED
10.1.4.1.6 Components such as sleeves or bushings which may be fabricated having an inner face of one metal and a supporting outer face of another, or conductors which are used with connectors of a dissimilar metal shall have their exposed interfaces protected against moisture. This protection will be
afforded by an epoxy coating of 450 �m minimum thickness over the exposed bimetallic contact and surrounding area.
10.1.4.1.7 All bearings shall be sealed type bearings. The seal shall be guaranteed to be protective against sand, salt spray and moisture for a minimum period of 10 years.
10.1.4.1.8 Galvanized steel shall be protected by painting (Duplex system), except for threaded items such as nuts and bolts, which will be chromate according to the instructions of the Laboratory of Materials (Israel Electric Corp. Ltd.). The supplier will submit for the approval of the Purchaser the surface preparation and passivation procedures to enable better adhesion of the paint. Adhesion shall be examined according to BS 3900 part E6/74 AMD3893/82 and shall show a result not higher than No.1.
10.1.4.1.9 The supplier may suggest for approval a painting system with the thickness as follows:
10.1.4.1.9.1 Hot dip for internal installations: one layer
thickness of 50 �m.
10.1.4.1.9.2 Hot dip for external installations:
- one layer of primer thickness of 50 �m.
- one layer of finish thickness of 40 �m.
total thickness of 90 �m.
10.1.4.1.9.3 Electrolytically plated internal or external:
- one layer of primer thickness of 50 �m.
- one layer of intermediate thickness of 40 �m.
- one layer of finish thickness of 25 �m.
total thickness of 115 �m.
ANNEXURE “B” AND SUMMARY OF DATA SPECIFICATION SR - 146
B-14�
REQUIRED OFFERED
10.1.4.1.10 Every two layers shall be color contrasted. One such system may be based on SSPC SPEC. 2.05/82.
*Primer: TT-P-641, Zinc Dust-Zinc Oxide, Type 2, “Phthalic Alkyd Resin.
*Intermediate: SSPC paint No. 104, white or tinted alkyd paint.
*Finish: SSPC paint No. 104, white or tinted alkyd paint.
10.1.4.1.11 Contractor is requested to describe or indicate deviations (see Clause 15, Annexure “B”) from above requirements. In case no deviations are mentioned it will be understood that Manufacturer’s offer entirely complies with the above mentioned requirements.
10.1.5 SEISMICITY OF THE SITE �
10.1.5.1 Peak horizontal (x, y directions) ground acceleration with a 85% probability not to be exceeded over a 50 years period) .................................................................................
0.5g
10.1.5.2 Vertical severities (z direction) ground acceleration .....................0.25g
10.1.6 OTHER REQUIREMENTS
10.1.6.1 Permissible altitude over the sea level (m) ................................1000
10.1.6.2 Maximum induced electromagnetic disturbances in the secondary system for interface designed as "normal EMC severity class" (kV peak) .......................................................
1.6
10.1.6.3 The Inductive Voltage Transformer shall be vermin proof. .............................................................................................
10.2 RELIABILITY, AVAILABILITY, MAINTAINABILITY
10.2.1 Manufacturer is requested to fill in the enclosed appendices:
10.2.1.1 Appendix 8 - RAM for 170 kV Voltage Transformer Oil Insulated
10.2.1.2 Appendix 9 - RAM for 170 kV Voltage Transformer SF6 Gas Insulated
ANNEXURE “B” AND SUMMARY OF DATA SPECIFICATION SR - 146
B-15�
REQUIRED OFFERED
10.3 FUNCTIONAL REQUIREMENTS
10.3.1 The Voltage Transformers and their accessories shall be constructed as to comply with the ratings and to meet all test requirements with respect to insulation strength, current carrying capacity and mechanical operation
10.3.2 The Voltage Transformers shall be substantially in the same mechanical conditions at the termination, as at the beginning, the specified test duties
10.4 PROPERTIES (RATINGS)3
10.4.1 ELECTRICAL DATA FOR VT’s
10.4.1.1 Highest voltage for equipment Um (kV r.m.s) ................................170
10.4.1.2 Rated primary voltage (kV) ...........................................................161/�3 �
10.4.1.3 Secondary windings and destination:
10.4.1.3.1 Secondary windings No.1 and No.2 (Item 1): ...........................Measuring and protection
10.4.1.3.2 Secondary windings No.1, No.2 and No.3 (Item 2): ..................Measuring and protection
10.4.1.4 Rated secondary voltage .............................................................IEC 61869-3
10.4.1.10.1 Rated lightning impulse withstand voltage for primary winding (kV peak) ..........................................................
750�
10.4.1.10.2 Rated power-frequency withstand voltage for primary winding (kV r.m.s.) ........................................................
325�
10.4.1.10.3 Chopped lightning impulse withstand voltage for primary winding (kV peak) ..........................................................
860
10.4.1.10.4 Rated power-frequency withstand voltage for the earthed terminal of primary winding (kV r.m.s.) ..........................
3�
10.4.1.11 The partial discharge level shall not exceed: IEC 61869-1 cl.5.3.3.1
10.4.1.11.1 At Um (pC) ................................................................ 10
10.4.1.11.2 At 1.2 x Um/�3 (pC) ................................................................5
10.4.1.12 Calculated capacitance between primary winding and earth .......................................................................................
10.4.1.13.2.1 Alternative A (pF) ................................................................
10.4.1.13.2.2 Alternative B (pF) ................................................................
10.4.1.13.2.3 Alternative C (pF) ................................................................
10.4.1.13.2.4 Alternative D (pF) ................................................................
10.4.1.14 Capacitance between top and capacitive tap (pF) .....................
10.4.1.15 Capacitance between capacitive tap and earth (pF) ...............................................................................................
10.4.1.16 The dielectric dissipation factor for alternatives A&C
shall not exceed at Um/�3 .............................................................
0.005�
10.4.1.17 The rated power frequency withstand voltage of the insulation between sections (kV r.m.s) ................................
3�
10.4.1.18 The rated power frequency voltage for secondary windings insulation (kV r.m.s) ........................................................
3�
10.4.2 OTHER REQUIREMENTS ALL ITEMS
10.4.2.1 Limits of temperature rise of VT at +50�C ambient air
temperature (values in table 5 minus 10�K) acc. to .......................
IEC 61869-3 cl.6.4.1
10.4.2.1.1 Alternatives A&C (VT immersed in oil and hermetically sealed) ................................................................
10.4.2.1.1.1 temperature rise at top of tank or housing not
more than (�K) ................................................................ 45
ANNEXURE “B” AND SUMMARY OF DATA SPECIFICATION SR - 146
B-19�
REQUIRED OFFERED
10.4.2.1.1.2 Maximum temperature rise of windings at a burden corresponding to the thermal limiting output and continuous rated voltage factor shall not
10.4.2.1.1.3 Maximum temperature rise of windings at a voltage factor 1.5 for "30 sec", starting after the application of 1.2 times rated voltage shall not
10.4.2.1.2 Alternatives B&D (VT with SF6 gas insulation) ..........................
10.4.2.1.2.1 Maximum temperature rise of windings at a burden corresponding to the thermal limiting output and continuous rated voltage factor shall not
10.4.2.1.2.2 Maximum temperature rise of windings at a voltage factor 1.5 for "30 sec", starting after the application of 1.2 times rated voltage shall not
10.4.2.2.2.4 Total simultaneous load (kVA) ................................
ANNEXURE “B” AND SUMMARY OF DATA SPECIFICATION SR - 146
B-20�
REQUIRED OFFERED
10.4.2.3 Each winding shall fulfill its respective accuracy requirements within its output range, while at the same time other winding has an output of any value from 0 to 100% of the upper limit of the output range specified for the other winding ................................................................
10.4.2.4 The voltage transformers shall be designed to withstand without damage when energized at rated voltage, the mechanical and thermal effects of an external short-circuit of 50 kA r.m.s. for duration of 1 sec ...............................................................................................
10.4.2.5 The RIV shall not exceed at 1.1xUm/�3 (�V) ................................2500
10.4.2.6 Transmitted overvoltage from the primary to the secondary terminals shall be less than (kV) ................................
1.6 4
10.4.2.7 Seismic Qualification level acc. to IEEE 693 ...............................
or IEC 62271-207/2012 .........................................................
Moderate level
AF5
10.5 DESIGN AND CONSTRUCTION ALL ITEMS
10.5.1 GENERAL REQUIREMENTS
10.5.1.1 All inductive VT's must be designed so as to be able to drain the trapped charge. Initially assumed to be 1.5 p.u. to values lower than 0.2 p.u. in the following:
10.5.1.1.1 The VT connected directly to a 170 kV overhead line up to 125 km long. ................................................................
10.5.1.1.2 The VT connected to a 170 kV by XLPE cable up to 20 km long. .................................................................................
10.5.1.2 The VT's shall have the capability to withstand thermally and mechanically two successive drainages of the line in above alternatives, the second of which occurs immediately after the first one ................................
10.5.1.3 The characteristics of the 170 kV double circuit transmission lines, to which VT's will be connected are as follow:
4 Type A of impulse, acc. to IEC 61869-1 Table 9.
ANNEXURE “B” AND SUMMARY OF DATA SPECIFICATION SR - 146
10.5.1.4 Discharge withstand capability test will be performed. Describe method and supply the test report ................................
10.5.1.5 Voltage transformer is guaranteed suitable for discharge withstand capability taking into account line characteristics as stated above .....................................................
10.5.1.6 The following data shall be indicated by Manufacturer for the ferroresonance study: ........................................................
10.5.1.6.1 Leakage inductance for primary winding (H) ............................
10.5.1.6.2 Leakage inductance for secondary windings (H/H) ...................
10.5.1.6.3 Resistance for primary winding (�) ................................
10.5.1.6.4 Resistance for secondary windings ................................
10.5.1.6.5 Magnetizing curve taking into consideration the following:
10.5.1.6.5.1 The uniform scale representation is preferred instead of logarithmic one .........................................................
ANNEXURE “B” AND SUMMARY OF DATA SPECIFICATION SR - 146
B-22�
REQUIRED OFFERED
10.5.1.6.5.2 The magnetizing curve shall be measured directly on the core and not on the assembled VT (without the influence of primary winding capacitance) ................................................................
10.5.1.6.5.3 Magnetizing curve will be sent as Upeak(or �peak) versus Ipeak ................................................................................
10.5.1.6.5.4 Magnetizing curve up to 2 p.u.(measured values and extrapolated up to 4 p.u. of the magnetic flux or dynamic saturation inductivity for 3.5-4 p.u. ............................
10.5.1.6.6 Equivalent resistance of the magnetic core power losses or magnetic core power losses dependence on the peak value of the magnetizing branch voltage taking into consideration the following:
10.5.1.6.6.1 The uniform scale representation is preferred instead of logarithmic one .........................................................
10.5.1.6.6.2 Rfe=f(Upeak) or Pfe=f1(Upeak) where Upeak is the peak value of the magnetizing branch voltage ................................
10.5.1.6.6.3 Core power losses including both eddy-current and hysteresis power losses ....................................................
10.5.1.6.7 Secondary loads (indicate the respective power factor cos �) ................................................................
10.5.1.6.8 Indicate if steps shall be taken (screenings, special type of earthing) to reduce overvoltage between terminals of secondary windings and earth to safe value on switching the VT on and off at rated voltage and during atmospheric over voltages. ................................
10.5.2 INSULATING MEDIUM
10.5.2.1 Insulating medium for VT in Alternatives A&C ..............................Oil/paper
ANNEXURE “B” AND SUMMARY OF DATA SPECIFICATION SR - 146
B-23�
REQUIRED OFFERED
10.5.2.1.1 The unused insulating oil for the voltage transformer should have the characteristics of inhibited oil according to: ................................................................
IEC 60296 and Table 2 in
Appendix 5
10.5.2.1.2 Type of oil acc. to Appendix 55 .................................................
10.5.2.1.3 Amount of oil per VT (kg) ..........................................................
10.5.2.2 Insulating medium for VT in Alternatives B&D ..............................SF6 gas
10.5.2.2.1 The VT’s shall be designed for use with SF6 gas complying with provisions acc. to: ................................
IEC 60376 �
10.5.2.2.2 SF6 gas Manufacturer ...............................................................
10.5.2.2.3 Type ..........................................................................................
10.5.2.2.4 A biological test for non-toxicity of the SF6 gas shall be carried out, acc. to: ...............................................................
10.5.2.2.6 Minimum functional pressure used for insulation routine tests (bar rel) ................................................................
10.5.2.2.7 The critical pressure at which an alarm signal will be given at 200C (bar rel) ................................................................
10.5.2.2.8 Rated filling density (g/l) ...........................................................
10.5.2.2.9 The critical density at which the alarm signal will be given (g/l) ...................................................................................
10.5.2.2.10 Dielectric strength at rated density (kV/cm) ............................
10.5.2.2.11 Dew point temperature of water vapor content in SF6 gas in the installed VT determined, acc. to IEC 60376 not more than (0C) ...........................................................
-5
10.5.2.2.12 Maximum permissible water vapor content at rated operating pressure at 200C in VT (ppmv) ................................
10.5.2.2.13 SF6 gas pressure during transport (bar rel) ............................
5 Other oil types can be used only with IECo's approval.
ANNEXURE “B” AND SUMMARY OF DATA SPECIFICATION SR - 146
B-24�
REQUIRED OFFERED
10.5.2.2.14 Amount of SF6 gas per assembled VT at rated pressure and 200C ................................................................
10.5.2.2.15 Amount of SF6 gas supplied by manufacturer (kg) ............................................................................................
10.5.3 SEALING
10.5.3.1 For VT in alternatives A&C:
10.5.3.1.1 The Voltage Transformers of oil filled construction shall be completely sealed from the atmosphere and suitable for vertical mounting with primary connections at top ................................................................
10.5.3.1.2 Sealing against penetration of moisture according to one of the following methods:
10.5.3.1.2.1 Gas above oil (indicate gas) ..................................................
10.5.3.1.3 In case bellows is used the Voltage Transformer shall be equipped with a bellows position indicator .....................
10.5.3.1.4 In case gas above oil is used the Voltage Transformer shall be equipped with oil level indicator .................
10.5.3.1.4.1 Gas pressure (N/cm2) ............................................................
10.5.3.1.5 The indicators mentioned above shall be weatherproof with corrosion resistance class C4 ........................
10.5.3.1.6 Clear indication of normal and danger zone shall be provided by bellows position indicator or by the manometer and oil level indicator ................................................
10.5.3.1.7 The indications of the devices mentioned above shall be easily readable from ground level even when the Voltage Transformer is installed on its supporting structure ......................................................................................
10.5.3.1.8 The bushing of the secondary leads shall be such as to prevent any penetration of air to the oil space, in case of damage to the secondary connections ........................
ANNEXURE “B” AND SUMMARY OF DATA SPECIFICATION SR - 146
B-25�
REQUIRED OFFERED
10.5.3.1.8.1 Please indicate the material of secondary leads bushing .....................................................................................
10.5.3.2 For VT in alternatives B&D:
10.5.3.2.1 All gas seals shall be designed to ensure that leakage rates are kept to an absolute minimum under all normal pressure, temperature, electrical load and fault conditions .............................................................
10.5.3.2.2 The seals shall not be deteriorated when are exposed to the gas and vapors, as well as to temperature variations and mechanical forces that can be expected ................................................................
10.5.3.2.3 Type of materials of gas seals ...................................................
10.5.3.2.4 Time between refilling (years) ...................................................
10.5.3.2.5 Permissible total SF6 gas losses (%/year) ................................0.1
10.5.3.2.6 The bushing of the secondary leads shall be such as to prevent any penetration of air to the SF6 space, in case of damage to the secondary connections ........................
10.5.3.2.6.1 Please indicate the material of secondary leads bushing .....................................................................................
10.5.4 PROTECTION AGAINST OVERPRESSURE
10.5.4.1 For VT in alternatives A&C:
10.5.4.1.1 Measures to achieve burst protection on upper and bottom sides of voltage transformer (description, mode of operation and drawing shall be included) ......................
10.5.4.2 For VT in alternatives B&D:
10.5.4.2.1 Type of pressure relief device ...................................................
10.5.4.2.2 A protective cover shall be provided for pressure relief device to prevent pieces of diaphragm from flying out or any dangerous SF6 arc produce gases escaping in a manner that could endanger personnel who may be present ................................................................
10.5.4.2.3 Operating pressure of pressure relief device (bar rel) ....................................................................................
ANNEXURE “B” AND SUMMARY OF DATA SPECIFICATION SR - 146
B-26�
REQUIRED OFFERED
10.5.4.2.4 Design pressure of the enclosure (bar rel) ................................
10.5.5 ACCESSORIES AND FITTINGS
10.5.5.1 The voltage transformers shall be with minimum four mounting holes on the transformer base ................................
10.5.5.2.2 Means of sampling the oil ..........................................................
10.5.5.3 For VT in alternatives B&D:
10.5.5.3.1 Filling valve type DILLO ............................................................
10.5.5.3.2 Means of sampling the SF6 gas .................................................
10.5.5.3.3 Gas monitoring:
10.5.5.3.3.1 The insulating capacity of the SF6 gas insulated VT shall be monitored with temperature compensated pressure gauge (indicate type) ..........................
10.5.5.3.3.2 The monitoring devices shall provide continuous monitoring of the state of the gas ................................
10.5.5.3.3.3 The monitoring device shall be equipped with 2 signaling contacts ................................................................
10.5.5.3.3.4 The monitoring device shall have the loss of SF6 setting. Please indicate the value (bar. rel) ..............................
10.5.5.3.4 Special test connection should be provided with the monitoring device in order to check the device without dismounting it. ................................................................
10.5.5.3.5 A protective cover shall be provided for the monitoring device to prevent mechanical damage and direct sunlight ................................................................
10.5.5.3.6 Gas Treatment Device Constructional measures for controlling moisture increase in SF6 gas, or to remove the impurities:
10.5.7.1 The insulators shall be porcelain (Alternatives A&B) or composite insulators (Alternatives C&D)……………….
10.5.7.2 Alternatives A&B (Porcelain insulators):
ANNEXURE “B” AND SUMMARY OF DATA SPECIFICATION SR - 146
B-28�
REQUIRED OFFERED
10.5.7.2.1 Outdoor heavy duty, high grade, high creepage-path type, porcelain insulator suitable for the climatic, environmental and atmospheric conditions as described under Clause 10 shall be provided6
10.5.7.2.2 The insulators shall be "anti-fog" profiles of the alternate sheds or normal sheds type (according to fig. 4b or 5b in IEC 60815-2 and the enclosed drawings on pages B-40 and B-41) greasing and cleaning to all surfaces permitting easy access for greasing and cleaning to all surfaces ................................
10.5.7.2.3 The insulators shall be only “windformed” type not “drop shaped edge” ................................................................
10.5.7.2.4 Please indicate on enclosed drawings all dimensions required ................................................................
10.5.7.2.9.2 Power frequency voltage withstand test 1 min (kV r.m.s.) .......................................................................................
325�
10.5.7.2.10 All other relevant tests shall be carried out, acc. to: IEC 62155
10.5.7.2.11 Reference unified specific creepage distance7 (RUSCD):
53.7
mm/kV�
10.5.7.2.11.1 Phase to ground not less than (mm) ................................5270
�
6 Type B of pollution severity and SPS class e (very heavy) as defined by IEC 60815-1/2008
�7 The required value are for insulator with average medium diameter Da<300mm
ANNEXURE “B” AND SUMMARY OF DATA SPECIFICATION SR - 146
B-29�
REQUIRED OFFERED
10.5.7.2.12 Corrected unified specific creepage distance USCD for insulator diameter (Kad) ................................
10.5.7.2.13 Arcing distance (A) not less than8 (mm): ................................1500
10.5.7.2.17 The material used in attaching the flange to porcelain insulator shall be such as to form a slanted circular zone at the upper part of the flange and above it so as not to permit water accumulation, (see drawing on page B-43). Any change in shape with aging of material in that zone shall be unacceptable. Manufacturer is required to paint the inside zone of the flange (primer) and to send drawing with details, about type of materials used (bonding material, primer, final paint, etc.) ..............................................................
10.5.7.2.18 Design pressure only for alt. B ................................................
10.5.7.2.19 Max SF6 gas pressure only for alt. B ................................
10.5.7.3 Alternatives C&D (Composite insulators):
10.5.7.3.1 Outdoor heavy duty, high grade, high creepage-path type, composite insulators, suitable for the climatic, environmental and atmospheric conditions as described under Clause 10 shall be provided9 ........................
HTV Silicon rubber
10.5.7.3.2 The insulators shall be "anti-fog" profiles of the alternate sheds or normal sheds type (according to fig. 2a or fig. 6 in IEC 60815-3 and the enclosed drawings on pages B-41 and B-42) permitting easy access for cleaning to all surfaces ................................
8 In case of lower value than 1500 mm, the impulse and power frequency test reports for
offered insulator shall be provided to prove that the insulation withstand conditions are fulfilled. 9 Type B of pollution severity and SPS class e (very heavy) as defined by IEC 60815-1/2008�
ANNEXURE “B” AND SUMMARY OF DATA SPECIFICATION SR - 146
B-30�
REQUIRED OFFERED
10.5.7.3.3 The insulators shall be only “windformed” type ..........................
10.5.7.3.4 Please indicate on enclosed drawings all dimensions required ................................................................
10.5.7.3.5 Manufacturer of composite insulator ................................
10.5.7.3.6 Type of insulator: ................................................................
10.5.7.3.7 Rated voltage (kV): ................................................................170
10.5.7.3.8 Color .........................................................................................grey
10.5.7.3.9.2 Power frequency voltage withstand test 1 min (kV r.m.s.) .......................................................................................Please describe the procedure of test. The test will be performed with the maximum permissible hydrophobicity class of surface insulator
325
�
10.5.7.3.10 Reference unified specific creepage distance10 (RUSCD): ...................................................................................
53.7
mm/kV�
10.5.7.3.10.1 Phase to ground not less than (mm) ................................5270
�
10.5.7.3.11 Corrected unified specific creepage distance USCD for insulator diameter (Kad) taking into consideration fig 7b in IEC 60815-3, for HTM (hydrophobicity transfer materials) with possible loss of hydrophobicity: ................................................................
10.5.7.3.12 Arcing distance(A) not less than11 (mm) ................................1500
10.5.7.3.13 The design of insulator will be only: ................................Tube type
10 The required value are for insulator with average medium diameter Da<300mm. 11
In case of lower value than 1500 mm, the impulse and power frequency test reports for offered insulator shall be provided to prove that the insulation withstand conditions are fulfilled.
ANNEXURE “B” AND SUMMARY OF DATA SPECIFICATION SR - 146
B-31�
REQUIRED OFFERED
10.5.7.3.14 Describe the manufacturing process of composite insulator in separate document: .................................................
10.5.7.3.14.2 Type of inorganic fillers added to polymer materials and concentration ......................................................
10.5.7.3.15 Describe the mechanism of hydrophobicity transfer and recovery and include details in connection with: ..................
10.5.7.3.15.1 Losing and recovery of hydrophobicity in time ......................
10.5.7.3.15.2 Losing and recovery of hydrophobicity in polluted conditions .................................................................................
10.5.7.3.15.3 Losing and recovery of hydrophobicity under rain conditions .................................................................................
10.5.7.3.15.4 Changing of dielectric withstand characteristics at losing and recovery of hydrophobicity characteristic ................................................................
10.5.7.3.16 Send drawings with all the dimensions required and with manufacturing tolerances ................................
10.5.7.3.17.4 End fitting ................................................................
ANNEXURE “B” AND SUMMARY OF DATA SPECIFICATION SR - 146
B-32�
REQUIRED OFFERED
10.5.7.3.18 The material used in design of composite insulator (For example see drawing on page B-44) ................................
10.5.7.3.19 Specify the surface hydrophobicity level of the hollow insulator material at the time of installation acc. to: Indicate the measurement method and send test report. Indicate also the difference between hydrophobicity level of upper and lower shed surface, if applicable ................................................................Send also a graph including hydrophobicity distribution along the length of insulator ................................
IEC 62073
10.5.7.3.20 Specify the loss of hydrophobicity of sheds versus time, the loss of hydrophobicity in polluted zone and ability to recover hydrophobicity after loss ................................
10.5.7.3.21 Electric field level near end fittings (kV/cm) ............................
10.5.7.3.22 Recommended method to detect on site the defective insulators (send technical description) ........................
10.5.7.3.23 Limits of temperature inside the tube (highest/lowest) (0C/0C) ..............................................................
10.5.7.3.24.7 Maximum service pressure (MSP) (Mpa) ............................
10.5.7.3.24.8 Maximum permissible axial stress (Mpa) .............................
10.5.7.3.24.9 Maximum residual strain after bending load:
10.5.7.3.24.9.1 At MML load (µm/m) .........................................................
10.5.7.3.24.9.2 At damage limit load (µm/m) ................................
10.5.7.3.24.9.3 At SML load (µm/m) .........................................................
10.5.7.3.24.10 Maximal tube residual deflection under bending load:
10.5.7.3.24.10.1 At MML load (mm) ..........................................................
10.5.7.3.24.10.2 At damage limit load (mm) ................................
10.5.7.3.24.10.3 At SML load (mm) ..........................................................
10.5.7.3.24.10.4 Specific deflection of the tube used for calculation of permissible deflection12 (mm/kN x m3) ......................................................................................
10.5.7.3.24.11 Other method to determine the onset of deterioration (if applicable) ......................................................
10.5.7.3.25 Indicate if the influence of solar radiation is included in calculation of MSP ....................................................
10.5.7.3.26 Indicate method of attaching the metal end-fitting to the tube ...................................................................................Describe also the checking methods ................................
10.5.7.3.27 Indicate the sealing system for composite hollow insulator ......................................................................................
12 Deflection (mm) = specific deflection (mm/kN � m3) x bending load (kN) x (length [m]3)
ANNEXURE “B” AND SUMMARY OF DATA SPECIFICATION SR - 146
B-34�
REQUIRED OFFERED
10.5.7.3.28 Indicate if decomposition product resulted from interactions between interior surface of the tube and gaseous or liquid insulation materials................................
10.5.8 STRUCTURAL SUPPORT AND ASSOCIATED STEEL WORK
10.5.8.1 The Contractor shall supply all the steelwork necessary for fixing and supporting the VT ................................
10.5.8.2 The design of supporting steel structure shall permit total accessibility. Indicate if supporting structure is different for each Item and send drawings ................................
10.5.8.3 All metallic frames (supporting structures, etc.) shall be included in the VT scope of supply ................................
10.5.8.4 The finish and painting of the structural support and associated steel work shall be according to Appendix 10 and shall enable withstanding the service conditions under cl 10.1.2 .............................................................
10.5.8.5 Hot dip parts .................................................................................
10.5.8.5.1 Hot dip galvanized thickness (µm) ................................ Average 90
10.5.8.5.2 The painting shall be acc. to Appendix 10 cl. 3.2.1 in one of the following painting system:
10.5.8.5.2.2 Electrostatic power painting (µm) ................................80
10.5.8.6 Electrolytically galvanizing parts with minimum zinc layer (µm) ......................................................................................
20
10.5.8.6.1 The painting of outdoor parts shall be acc. to Appendix 10 cl. 3.2.2 in one of the following painting system: .......................................................................................
10.5.8.6.1.2 Electrostatic power painting (µm) ................................80
10.5.9 STRESSES ON MOUNTED VOLTAGE TRANSFORMERS INCLUDING STEEL SUPPORTING STRUCTURE
Alt
A&B
App.6
Alt
C&D
App.7
ANNEXURE “B” AND SUMMARY OF DATA SPECIFICATION SR - 146
B-35�
REQUIRED OFFERED
10.5.9.1 Permissible values of loading for terminals ................................�
10.5.9.1.1 Static terminal load (sum of all loads occurring simultaneously in service: conductor pull, conductor weight and wind force on conductor) in any direction in space not less than: (N) .........................................................
2400
10.5.9.1.2 Testing load for 60 sec. Applied to the midpoint of the terminal, perpendicular to the bushing axis (N) ....................
3500
10.5.9.1.3 Short - time load (sum of all loads occurring simultaneously in case of service and short-circuit, without seismic forces) in any direction in space not less than (N): ................................................................
5500
10.5.9.2 Wind load at wind velocity of 44 m/sec acc. to: (N)
10.5.9.3 Seismic forces acc. to IEEE 693-2005 Moderate level
10.5.9.3.1 Simultaneous earthquake acceleration applied at the base of the voltage transformer taking into consideration seismicity of the site acc. to subcl 10.1.5 and mounting of the VT on support at 2.5 m height and 100 kg weight. (see appended support drawing B-45) ................................
10.5.9.3.1.3 Testing methods used (indicate standard denomination and number) ......................................................
10.5.9.3.2 Safety factors of VT insulators taking into consideration the requirements under subcl. 10.5.9.1 for each item of offered VT including steel pedestal: ...................
A&B C&D
10.5.9.3.2.1 Condition 1 – routinely expected load including - design pressure 100% - mass 100%, - rated terminal load 100% (tensile force on conductors, weight of conductors and load due to wind on conductors) - load do to wind on VT 30%
> 2.1
ANNEXURE “B” AND SUMMARY OF DATA SPECIFICATION SR - 146
B-36�
REQUIRED OFFERED
10.5.9.3.2.2 Condition 2 – rarely occurring extreme loads including: - design pressure 100% - mass 100%, - rated terminal load 50% (tensile force on conductors, weight of conductors and load due to wind on conductors), - load do to wind on VT 100%, - short circuit load 100%
> 1.5
10.5.9.3.2.3 Condition 3 – rarely occurring extreme loads including: - design pressure 100% - mass 100%, - rated terminal load 70% (tensile force on conductors, weight of conductors and load due to wind on conductors), - load do to wind on VT 10%, - seismic load 100%
> 1.2
10.5.10 SECONDARY TERMINAL BOX
10.5.10.1 All wiring for connection to Purchaser’s cable shall be terminated at terminal blocks enclosed in a terminal box having environmental protection degree ................................
IEC 60529 IP 54
10.5.10.2 The protection against mechanical impact should be acc. to: ..........................................................................................
IEC 62262 IK10
10.5.10.3 The terminals for external connections shall be made of thermosetting plastic material (melamine) ......................
10.5.10.4 Type of terminals shall be: (16mm2, 500V) Phoenix UK-16N
or equivalent
10.5.10.5 The terminal blocks shall be spaced to allow ample clearance on all sides). ................................................................
10.5.10.6 Cross section of secondary circuits connected to voltage transformers (mm2). ). .......................................................
2.5
10.5.10.7 The wires shall be with XLPE insulation for 1000V rated voltage .................................................................................
ANNEXURE “B” AND SUMMARY OF DATA SPECIFICATION SR - 146
B-37�
REQUIRED OFFERED
10.5.10.8 Each terminal block shall be provided with not less than 10% spare terminals ..............................................................
10.5.10.9 All wiring insulation and terminal blocks shall be flameproof protected, according to: ................................
ASTM D635
10.5.10.10 The destination of each winding shall be clearly indicated at the terminals. ............................................................
10.5.11 WINDINGS
10.5.11.1 Material of primary winding.........................................................
10.5.11.2 Cross section of primary winding (mm²) ................................
10.5.11.3 Material of secondary winding ....................................................
10.5.11.4 Cross section of secondary winding (mm²) ................................
10.5.12 DIMENSIONS AND WEIGHTS
10.5.12.1 Dimensions drawings for each item ................................
10.5.12.2 Minimum recommended clearance in air:
10.5.12.2.1 Between phase-axes (mm) ......................................................
10.5.12.2.2 Between live parts to earth (mm) ................................
10.5.12.2.3 Between VT primary terminals to the bottom of the steel pedestal (mm)
10.5.12.2.4 Between VT primary terminals to the top of the steel pedestal (mm)
10.5.12.3 Net weight of each voltage transformer including insulating medium:
10.5.12.3.1 ITEM 1:
10.5.12.3.1.1 Alternative A (Kg) ................................................................
10.5.12.3.1.2 Alternative B (Kg) ................................................................
10.5.12.3.1.3 Alternative C (Kg) ................................................................
10.5.12.3.1.4 Alternative D (Kg) ................................................................
ANNEXURE “B” AND SUMMARY OF DATA SPECIFICATION SR - 146
B-38�
REQUIRED OFFERED
10.5.12.3.2 ITEM 2:
10.5.12.3.2.1 Alternative A (Kg) ................................................................
10.5.12.3.2.2 Alternative B (Kg) ................................................................
10.5.12.3.2.3 Alternative C (Kg) ................................................................
10.5.12.3.2.4 Alternative D (Kg) ................................................................
10.5.12.4 Weight of oil:
10.5.12.4.1 Alternative A (Kg) ................................................................
10.5.12.4.2 Alternative C (Kg) ................................................................
10.5.12.5 Weight of SF6 gas:
10.5.12.5.1 Alternative B (Kg) ................................................................
10.5.12.5.2 Alternative D (Kg) ................................................................
ANNEXURE “B” AND SUMMARY OF DATA SPECIFICATION SR - 146
B-39
�
170 kV VOLTAGE TRANSFORMER
PORCELAIN INSULATOR - ALTERNATE-SHEDS
REQUIRED
OFFERED
P1-P2 > 15 mm P1-P2 =
S/P1 > 0.65 S/P1 =
C > 40 mm C =
� = 5�-10� � =
Kad = 1 Kad =
Da < 300 mm Da =
RUSCD �53.7 mm/kV l =
L � 5270 mm L =
L/A < 3.51 L/A =
l1/d1 < 4.5 l1/d1 =
l2/d2 < 4.5 l2/d2 =
Kad = Correction factor of the RUSCD for insulator diameter
Da = (Ds1+Ds2+2Dt)/4.
RUSCD = Reference unified specific creepage distance phase to ground.
L = Phase to ground external creepage distance.
A = Arcing distance.
ANNEXURE “B” AND SUMMARY OF DATA SPECIFICATION SR - 146
B-40
�
170 kV VOLTAGE TRANSFORMER
PORCELAIN INSULATOR- NORMAL-SHEDS
REQUIRED
OFFERED
S/P > 0.65 S/P =
C > 30 mm C =
� = 5�-10� � =
Kad = 1 Kad =
Da < 300 mm Da =
RUSCD �53.7 mm/kV l =
L � 5270 mm L =
L/A < 3.51 L/A =
l/d < 5 l/d =
�
Kad = Correction Factor for insulator diameter of the RUSCD
Da = (Dt+Ds1)/2
RUSCD = Reference unified specific creepage distance phase to ground
L = Phase to ground external creepage distance.
A = Arcing distance.
ANNEXURE “B” AND SUMMARY OF DATA SPECIFICATION SR - 146
B-41
�
170 kV VOLTAGE TRANSFORMER
COMPOSITE INSULATOR - ALTERNATE-SHEDS
REQUIRED
OFFERED
P1-P2 > 15 mm P1-P2 =
S/P1 > 0.65 S/P1 =
C > 40 mm C =
� = 5�-10� � =
Kad = 1 Kad =
Da < 300 mm Da =
RUSCD �53.7 mm/kV l =
L � 5270 mm L =
L/A < 3.51 L/A =
l1/d1 < 4.5 l1/d1 =
l2/d2 < 4.5 l2/d2 =
Kad = Correction factor of the RUSCD for insulator diameter
Da = (Ds1+Ds2+2Dt)/4.
RUSCD = Reference unified specific creepage distance phase to ground.
L = Phase to ground external creepage distance.
A = Arcing distance.
ANNEXURE “B” AND SUMMARY OF DATA SPECIFICATION SR - 146
B-42
�
170 kV VOLTAGE TRANSFORMER
COMPOSITE INSULATOR - NORMAL SHEDS
REQUIRED
OFFERED
S/P > 0.65 S/P =
C > 25 mm C =
� = 5�-10� � =
Kad = 1 Kad =
Da < 300 mm Da =
RUSCD � 53.7 mm/kV l =
L � 5270 mm L =
L/A < 3.51 L/A =
l/d < 4.5 l/d =
Kad = Correction Factor for insulator diameter of the RUSCD
Da = (Dt+Ds1)/2
RUSCD = Reference unified specific creepage distance phase to ground
L = Phase to ground external creepage distance.
A = Arcing distance.
ANNEXURE “B” AND SUMMARY OF DATA SPECIFICATION SR - 146
B-43
�
170 kV VOLTAGE TRANSFORMER
PORCELAIN INSULATOR
�
NO. MATERIALS DETAILS
1 BONDING MATERIAL
2 PRIMER
3 FINAL PROTECTIVE PAINT
4 FLANGE MATERIAL
5 OTHER MATERIALS
ANNEXURE “B” AND SUMMARY OF DATA SPECIFICATION SR - 146
B-44
�
170 kV VOLTAGE TRANSFORMER
COMPOSITE INSULATOR
DETAILS FILLED BY MANUFACTURER
MATERIALS ITEMS No.
� �SILICON RUBER HOUSING 1 �
� �FRP� �TUBE 2 �
� �ALUMINIUM FLANGE 3 �
� � INTERFACE 1 (BETWEEN HOUSING AND TUBE)
4 �
� � INTERFACE 2 (BETWEEN HOUSING AND FLANGE)
5 �
� � INTERFACE 3 (BETWEEN TUBE AND FLANGE)
6 �
� �ARC RESISTANCE SURFACE
INNER SURFACE 7 �
ANNEXURE “B” AND SUMMARY OF DATA SPECIFICATION SR - 146
B-45
�
Steel supporting structure for mounting of VOLTAGE TRANSFORMERS
ANNEXURE “B” AND SUMMARY OF DATA SPECIFICATION SR - 146
B-46
�
REQUIRED OFFERED
10.6 COMMISSIONING / INSTALLATION ALL ITEMS
10.6.1 The Contractor shall be responsible for all equipment covered under his contract ................................................................................................
10.6.2 The installation of Voltage Transformers including steel pedestal shall be performed by Purchaser according to Contractor’s installation instructions .............................................................................................
10.6.3 Estimated number of man-hours required for erection of one VT ...........................
10.6.4 The Contractor shall prepare and submit three months prior to the start of erection and commissioning, a Commissioning Program for approval by Purchaser .............................................................................................
10.6.5 Estimated number of man-hours required for commissioning and testing of one VT: ................................................................................................
10.6.6 The Commissioning Program shall include indications for: ................................
10.6.6.1 Commissioning inspection to detect faults which have occurred during transportation, storing or during assembly at its final location. .........................................................................................
10.6.6.2 Preparation for use and procedures to describe the activities required to prepare systems for testing and operation ...................
10.6.6.3 Checking of rated data, connection, loading, etc. of the new equipment and necessary interface with the existing equipment supplied by others ..........................................................................
10.6.6.4 Checking of indicating meters, relays, control and communications equipment and similar functions associated with the equipment ................................................................................
10.6.6.5 Testing as detailed in tests on site program including the following:
10.6.6.5.1 The test objective ......................................................................
10.6.6.5.2 Test intent ..................................................................................
10.6.6.5.3 Required performance data ......................................................
ANNEXURE “B” AND SUMMARY OF DATA SPECIFICATION SR - 146
B-47
�
REQUIRED OFFERED
10.6.6.5.7 Painting and other corrosion protection .....................................
10.6.6.5.8 Putting the equipment into service ............................................
10.6.6.5.9 Final check. ...............................................................................
10.6.6.5.10 The critical limits of each criteria for which the equipment should be drawn out from service ...............................................
10.6.7 Changes and modifications to the Commissioning Program shall also be approved by Purchaser ................................................................
10.6.8 Commissioning results shall be witnessed by the Purchaser and documented on forms to be agreed upon by the Contractor. The record shall include other such as omissions or unsatisfactory test results ......................................................................................................................
10.6.9 The Contractor shall maintain an up-to-date record of all inspections and tests, which shall be handed over to the Purchaser at the completion of the site testing and commissioning ................................
10.6.10 The Contractor shall be responsible for making available to Purchaser a minimum of two (2) complete sets of marked-up “as built” drawing before leaving the site. Contractor shall correct and reissue the original drawings as soon as possible ................................
10.6.11 The Purchaser shall be responsible for the connection and disconnection of the new equipment to and from system, including first energization of new equipment, but with the advice and technical assistance of the Contractor (if required) ................................
10.6.12 The Contractor shall be responsible for supplying commissioning personnel (if required) with a good knowledge in all relevant operations prior and for commissioning and will be requested to submit a list giving name, experience and proposed duration on site .......................
10.6.13 The Contractor shall be responsible for safety of personnel (ours or his own) involved in commissioning and shall take all possible precautions and be fully aware of the dangers involved in testing. Contractor’s personnel should also be insured against death, personal accident and health while in Israel and be covered by Employers Liability insurance applicable in their country of origin .............................
10.6.14 Major failure or damage to equipment will require either its return to the factory or assignment of a special crew to carry out repairs ............................
10.6.15 Minor failure shall be repaired by commissioning personnel .............................
10.6.16 All expense (including transport to factory and return) in connection with damages and repairs as described above shall be paid by Contractor ................................................................................................
ANNEXURE “B” AND SUMMARY OF DATA SPECIFICATION SR - 146
B-48
�
REQUIRED OFFERED
10.6.17 Indicate if supervision of installation or commissioning by Contractor is necessary ............................................................................................
10.6.18 Confirm validity of the warranty period also in case that the erection and commissioning will be performed by Purchaser without Contractor’s supervision ...........................................................................................
10.7 OPERATION & MAINTENANCE
10.7.1 GENERAL ALL ITEMS
10.7.1.1 Manufacturer is requested to fill in the enclosed Appendix 8 and/or Appendix 9 “Reliability, Availability, Maintainability (RAM)" based on relevant information from users. Manufacturer shall describe the system of relevant data collection from users ............
10.7.1.2 Necessary maintenance work (please indicate details) .................
10.7.1.3 A complete set of tools for maintenance and repair work shall be provided, together with relevant drawings or photos and full instructions for use. All written information shall be in English .......
10.7.1.4 Number of months under normal service conditions between successive oil replacements ..........................................................
10.7.1.5 Number of months between checking of bellows position and oil leakage (Alternatives A&C) ............................................................
10.7.1.6 Number of months between checking of oil limiting values in accordance with IEC (Alternatives A&C) ........................................ Indicate also if gas analysis is recommended ................................
10.7.1.7 Number of months under normal service conditions between successive SF6 pressure checking (Alternatives B&D) ..................
10.7.1.8 Number of months between successive cleaning, painting and rust proofing of metal parts ............................................................
10.7.1.9 Expected man-hours required for periodical inspection and maintenance (hours) ......................................................................
10.7.1.10 The VT’s shall be designed for live-washing (automatic and manual) taking into account service conditions described under subclause 10 .................................................................................
10.7.1.11 Recommended maintenance works for VT with porcelain insulator (please give details) .........................................................
10.7.1.11.1 Intervals between cleaning (years) .......................................... Indicate also the method of cleaning (manual or automatic) ........
ANNEXURE “B” AND SUMMARY OF DATA SPECIFICATION SR - 146
B-49
�
REQUIRED OFFERED
10.7.1.11.2 Number of man-hours for cleaning ...........................................
10.7.1.12 Recommended maintenance works for VT with composite insulator (please give details) .........................................................
10.7.1.12.1 Intervals between cleaning (if applicable) (years) ..................... Indicate also the method of cleaning (manual or automatic) ........
10.7.1.12.2 Number of man-hours for cleaning ...........................................
10.7.1.12.3 Taking into consideration the washing method, indicate the reduction of hydrophobic properties during washing and ability to recover it after washing ...............................................................
10.7.1.12.4 Recommended resistivity of water in order to minimize the reducing withstand voltage during the washing ............................
10.7.1.13 Life duration of the VT’s in normal service conditions .................
10.7.1.13.1 VT's in Alternative A ................................................................
10.7.1.13.2 VT's in Alternative B ................................................................
10.7.1.13.3 VT's in Alternative C ...............................................................
10.7.1.13.4 VT's in Alternative D ...............................................................
10.7.2 SPARE PARTS
10.7.2.1 Manufacturer shall ensure spare parts (if applicable) for a period of life duration of VT’s ....................................................................
10.7.2.2 The Manufacturer shall propose detailed list of spare parts recommended for:
10.7.2.3.6 If the supply is from stock or by manufacturing after order .........
10.7.2.3.7 Lead time before supply (including transport time to Israel) .......
10.7.2.4 List of special equipment or tools necessary for maintenance works .............................................................................................
10.7.2.5 The contractor should supply the relevant documents as specified in Cl. 9.3 ........................................................................................
10.7.2.6 Manufacturer shall ensure training courses for IECo erection and operating people (if necessary). ....................................................
ANNEXURE “B” AND SUMMARY OF DATA SPECIFICATION SR - 146
B-51
�
11. TESTS & INSPECTIONS
MANUFACTURER’S OFFERED DATA AND PARAMETERS SHOULD BE FILLED IN AGAINST PURCHASER’S REQUIRED VALUES - AS WELL AS IN THE ABSENCE THEREOF UNDER ALL RELEVANT PARAGRAPHS IN THE FREE COLUMNS OF THE RIGHT HAND SIDE.�
A DEFINITE ANSWERS (YES OR NO) OR APPROPRIATE COMMENTS SHALL BE GIVEN TO ALL OTHER REQUIREMENTS.
�
REQUIRED OFFERED
11.1 TESTS – GENERAL ALL ITEMS
11.1.1 Contractor shall perform Production Tests to check the quality and uniformity of the workmanship and materials used in the manufacture of the Inductive Voltage Transformer ................................................................
11.1.2 Tests shall be carried out according to requirements further specified and one (1) CD of the relevant test reports for the proposed type of equipment shall be submitted to Purchaser with the proposal ................................
11.1.3 Eight (8) weeks prior to the execution of the routine tests the Contractor shall notify the Purchaser of its commencement. The exact date of performing the tests shall be indicated three (3) weeks before its start.
11.1.4 Contractor shall also submit, test data to prove that the design has the capability to meet all the ratings as specified in this Annexure as well as relevant test reports ................................................................................................
11.1.5 The Manufacturer is required to submit with the tender type test reports of offered type of VT performed by a neutral laboratory accredited to the last applicable accreditation requirements of ISO/IEC 17025/2005 by an Accreditation body which is a member of ILACMRA (eg. APLAC, EA, IAAC, A2LA). Furthermore the Laboratory scope of accreditation must include the required specific test methods used for the mentioned type tests. ................................................................
11.1.6 Contractor shall submit a list of all tests to be performed on site, after mounting of the Voltage Transformer and during operation ................................................................
ANNEXURE “B” AND SUMMARY OF DATA SPECIFICATION SR - 146
B-52
�
REQUIRED OFFERED
11.1.7 Contractor shall submit with the test reports a list of all measuring instruments, including their accuracy class and type, test equipment and test circuits ................................
IEC 61869-1 and
IEC 61869-3
11.1.8 Contractor shall indicate permissible tolerance for each test value ................................................................
11.2 TYPE TESTS A&C B&D13
11.2.1 Type Test Reports for offered types according to the provision of the latest relevant issue of IEC recommendations, shall be supplied with the proposal 14 (fill in also Appendix 2, Appendix 3 and/or Appendix 4) acc. to: ................................................................................................
IEC 61869-1 Cl.7.2
IEC 61869-3 Cl.7.2
Table 10
11.2.2 The Purchaser can require from Contractor to perform again type tests, which are not performed according to the requirements in this specification without extra price and in presence of IECo representatives ................................
11.2.3 Temperature-rise test according to: ................................The temperature rise values will be less than the values specified under cl. 10.4.2.1 ................................................................
IEC 61869-3 Cl.7.2.2
11.2.4 Lightning impulse voltage test on primary terminals according to: ................................................................................................
Phase to ground test voltage(kV peak) ................................
IEC 61869-3 Cl.7.2.3.1
IEC 61869-1 Cl.7.2.3.2.2 and Table 2
750
11.2.5 Wet test for outdoor transformers acc. To ................................
One minute power frequency test on primary winding phase to ground (kV r.m.s.) ................................................................
IEC 61869-1 Cl.7.2.4
325
11.2.6 Radio interference voltage test (R.I.V.)................................IEC 61289-1
Cl.7.2.5.1
11.2.6.1.1 Radio Interference level at 108 kV (1.1xUm/�3)
shall not exceed (�V) 15 ...............................................................
2500
13�For gas type VT indicate the gas pressure test for each test.
14 Please indicate number of Test Report.
15 Um = highest system voltage�
ANNEXURE “B” AND SUMMARY OF DATA SPECIFICATION SR - 146
B-53
�
REQUIRED OFFERED
11.2.7 Test for accuracy according to: ................................................................IEC 61869-3 Cl.7.2.6
11.2.7.1 Type test for limits of voltage error and phase displacement for measuring winding shall be performed acc. to: ................................................................
IEC 61869-3 Cl.7.2.6.301
11.2.7.2 Type test for limits of voltage error and phase displacement for protective winding shall be performed acc. to: ................................................................
IEC 61869-3 Cl.7.2.6.302
11.2.8 Verification of the degree of protection of secondary terminal box: ................................................................................................
IEC 61869-1 Cl.7.2.7
11.2.8.1 Verification of the IP coding (IP 54) ................................Cl.7.2.7.1
11.2.8.2 Mechanical impact test (IK 10) ....................................................Cl.7.2.7.2
11.2.9 Enclosures tightness test at ambient temperature (applicable for SF6 gas insulated VT’s, Alt. B&D) ................................
IEC 61869-1 Cl.7.2.8.1
NA
11.2.10 Short-circuit withstand capability test acc. to: ................................IEC 61869-3 Cl.7.2.301
11.2.11 Type tests of porcelain insulators (Alternative A&B) acc. to: ................................................................................................and Appendix 3 ................................................................
IEC 62155
11.2.12 Type tests of composite insulators (Alternative C&D) acc. to: ................................................................................................and Appendix 4 ................................................................
IEC 61462
11.3 ROUTINE TESTS: A&C B&D
11.3.1 Manufacturer shall perform all Routine Tests for each Inductive Voltage Transformer according to the provisions of IEC Recommendations and submit all relevant test reports acc. to: .. ................................................................
IEC 61869-1 Cl.7.3
Table 10
IEC 61869-3 Cl.7.3
�
11.3.2 Manufacturer shall submit in one (1) CD the routine test reports to Purchaser for approval one month prior to delivery. The equipment can be delivered only after approval of routine test reports ................................................................
�
11.3.3 Manufacturer shall indicate in Routine Test Report the permissible tolerance for each test value and test
ANNEXURE “B” AND SUMMARY OF DATA SPECIFICATION SR - 146
11.3.4.1.2 Separate source withstand voltage test acc. to: .........................IEC 61869-3 Cl.7.3.1.302
11.3.4.2 Partial discharge measurement test according to: ........................IEC 61869-1 & 61869-3
Cl.7.3.2
11.3.4.2.1 Pre-stress voltage/duration Indicate procedure A or B acc. to: ....................................................................................
IEC 61869-3 Cl.7.3.2.2
11.3.4.2.2 Measuring of PD level at specified voltage test :
11.3.4.2.3 Partial discharge level at Um (pC)........... <10
11.3.4.2.4 Partial discharge level at 1.2 x Um/�3 (pC)..... < 5
11.3.4.3 Power frequency voltage withstand tests between sections according to: ................................................................
IEC 61869-1 Cl.7.3.3
11.3.4.3.1 One minute power frequency test between sections (kV r.m.s.) ................................................................
3
11.3.4.3.2 One minute power frequency test between capacitive tap and earth (kV r.m.s.) ................................
11.3.4.4 Power frequency voltage withstand tests on secondary terminals:
IEC 61869-1 Cl.7.3.4
11.3.4.4.1 One-minute power frequency test between secondary terminals of each winding and earth (kV r.m.s.) ..................................................................................
3
ANNEXURE “B” AND SUMMARY OF DATA SPECIFICATION SR - 146
B-55
�
REQUIRED OFFERED
11.3.4.5 Tests for accuracy ................................................................IEC 61869-3 Cl.7.3.5
11.3.4.5.1 Routine test for accuracy for measuring windings of Voltage Transformers, according to: ................................
IEC 61869-3 Cl.7.3.5.301
11.3.4.5.2 Routine test for accuracy for protective windings of Voltage Transformers shall be performed ...............................
IEC 61869-3 Cl.7.3.5.302
11.3.4.6 Verification of terminal markings according to: .............................IEC61869-1 Cl.7.3.6
11.3.4.7 Oil-leakage test (applicable for oil insulated VT’s Alternatives A&C) ................................................................
IEC 61869-1 cl.7.3.7
NA
11.3.4.8 Enclosure tightness test at ambient temperature (applicable for SF6 gas insulated VT’s Alternatives B&D) acc. to: ................................................................
IEC 61869-1 cl.7.3.7
NA
11.3.4.9 Measurement of primary and secondary winding resistance acc. to: ................................................................
IEEE C57.13/2008
Cl.8.5 �
11.3.4.10 Measurement of capacitance and dielectric
dissipation factor (tan �) test shall be performed for each Voltage Transformer, according to Manufacturer’s Standard methods (a full description of the test method shall be supplied) and according to: ................................................................................................
IEC 61869-3 Cl.7.4.3
�
11.3.4.10.1 Capacitance between primary conductor and capacitance tap (pF) ................................................................
11.3.4.10.2 Capacitance between capacitance tap and earth (pF) .............................................................................................
11.3.4.10.3 Voltage on capacitance tap at Un/�3 primary voltage (V) ..................................................................................
11.3.4.10.4 The measurement of dielectric dissipation factor
(tan �) shall be performed at a voltage in the range
from 10kV to Um/�3 ................................................................
11.3.4.11 Measurement of insulation resistance (Indicate also the DC test voltage value for each of the following measurements) ................................................................
11.3.4.11.1 Between the primary winding and capacitance tap
11.3.4.16.1.3 Galvanizing test ................................................................Cl.9.5
11.3.4.16.1.4 Check of the interface between end fittings and housing .....................................................................................
In addition to the tests mentioned above, Manufacturer shall perform the following tests on one Voltage Transformer, except where indicated otherwise, and supply test reports and curves accordingly: ................................................................
IEC 61869-1 & 61869-3
Cl.7.4
A&C B&D
11.4.1 Chopped lightning impulse test on primary windings, according to: ................................................................................................
IEC 61869-1 Cl.7.4.1
11.4.1.1 One 100% full impulse (kV peak) ................................
11.4.1.2 Two 100% chopped impulses (kV peak)................................
11.4.1.3 Fourteen 100% full impulses (kV peak) ................................
11.4.1.4 Differences in impulse shape of full wave before or after chopped impulses (yes or no) ................................
11.4.2 Multiple chopped impulse test on primary terminals acc. to: ................................................................................................
IEC 61869-1
Cl.7.4.2
11.4.3 Transmitted overvoltage test acc. to: ................................
11.4.4 Mechanical tests are carried out to demonstrate that the VT is capable to withstand the required values under subcl. 10.5.9 ................................................................
IEC 61869-1 Cl.7.4.5
11.4.5 Internal arc fault test acc. to: ................................................................IEC 61869-1 & 61869-3
Cl.7.4.6
11.4.5.1 Internal arc fault current (kA r.m.s.) ................................ 50
11.4.5.2 Arc fault duration in protection class I (sec) ................................0.5
11.4.5.3 Operating time for the rupture disc (msec) - Alternative B&D ................................................................
11.4.6 Tightness tests at low and high temperatures (for VT's alternatives B&D) acc. to: ................................................................
IEC 61869-1 Cl.7.4.7
NA
ANNEXURE “B” AND SUMMARY OF DATA SPECIFICATION SR - 146
B-59
�
REQUIRED OFFERED
11.4.7 Gas dew point test (for VT's alternatives B&D) acc. to: ................................IEC 61869-1 Cl.7.4.8
NA
11.4.8 Corrosion test acc. to: ................................................................IEC 61869-1 Cl.7.4.9
11.4.9 Fire hazard test acc. to: ................................................................IEC 61869-1 Cl.7.4.10
11.4.10 Impedance and excitation measurements acc. to: ................................IEEE C57.13/2008
Cl.8.3
11.4.10.1 Measurement of short circuit impedance acc. to: ........................Cl.8.3.1.3
11.4.10.2 Measurement of exiting current and voltage and drawing of the magnetization curve at 50Hz acc. to: .....................
Cl.8.3.2
11.4.11 Seismic qualification test acc. to IEEE Std 693-2005 shall prove that the voltage transformer including all accessories will operate fully satisfactory during and after earthquake with ground acceleration indicated in clause 10.1.5 ................................................................................................
IEEE 693
Moderate level
11.4.11.1 Qualification by test ................................................................
11.4.11.2 Qualification by combined test and dynamic analysis……………………………………………….. The calculation will take into consideration also the support structure of VT with height of min. 2.5m and weight of 460kg ................................................................
11.4.11.3 Contractor is required to submit a test report to prove the qualification level and a dynamic analysis report for each alternative .............................................................
11.4.11.4 The dynamic seismic analysis report shall be done for voltage transformer including support structure acc. to: .........................................................................................
and taking into consideration: ........................................................
IEEE 693 cl.A1.3.3 &
A6
Annex. R
11.4.11.4.1 Damping ratio of voltage transformer (%) ................................
11.4.11.4.2 Natural frequency of voltage transformer in x, y, z
ANNEXURE “B” AND SUMMARY OF DATA SPECIFICATION SR - 146
ANNEXURE “B” AND SUMMARY OF DATA SPECIFICATION SR - 146
B-61
�
12. PACKING & DELIVERY
MANUFACTURER’S OFFERED DATA AND PARAMETERS SHOULD BE FILLED IN AGAINST PURCHASER’S REQUIRED VALUES - AS WELL AS IN THE ABSENCE THEREOF UNDER ALL RELEVANT PARAGRAPHS IN THE FREE COLUMNS ON THE RIGHT HAND SIDE.
A DEFINITE ANSWERS (YES OR NO) OR APPROPRIATE COMMENTS SHALL BE GIVEN TO ALL OTHER REQUIREMENTS.
REQUIRED OFFERED
12.1 The equipment shall be delivered free of expense to the Purchaser on board overseas vessel ...........................................................................................
12.2 The equipment package for shipment shall be so designed and carried out as to prevent any damage to equipment during shipment ........................
12.3 Port of shipment shall be an ice-free Atlantic or Baltic or Mediterranean port as later designated by Purchaser. ................................
12.4 Manufacturer is required to use seaworthy packing ................................
12.5 Precautionary and handling marking on crates shall be made with appropriate international symbols according to DIN 55402 ................................
12.6 A three directions shock indicators calibrated for 10g acceleration (non-resettable type) shall be provided in each crate ................................
12.7 Indicate in which position (horizontal or vertical) the VT will be transported and shipped. Corresponding notes shall be provided on the packing ................................................................................................
12.8 Manufacturer's requirements for Transport on roads and on site ............................
12.9 Manufacturer should supply drawings and description of packing ..........................
12.10 Number of VT’s packed in each crate for transportation ................................1 �
12.11 Each shipment container shall contain a packing list and, in addition, shall be marked with the following information: ................................
12.11.1 Descriptive name/s of the equipment or supplies contained ................................
12.11.2 Quantity packed in container ................................................................
12.11.3 Serial numbers, if any, of the equipment contained ................................
12.11.4 Contract number ................................................................................................
ANNEXURE “B” AND SUMMARY OF DATA SPECIFICATION SR - 146
B-62
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REQUIRED OFFERED
12.11.5 Contractor’s name and address (city, state, country) ................................
12.11.6 Gross weight of container ................................................................
12.11.7 Cubic volume of container ................................................................
12.12 Dimensions of each type of packing crate supplied by Manufacturer: ................................................................................................
12.12.1 L x W x H (m/m/m) .............................................................................................
12.13 Total shipping weight for VT's quantity in base contract :
12.13.1 ITEM 1:
12.13.1.1 Alternative A (t)...........................................................................
12.13.1.2 Alternative B (t)...........................................................................
12.13.1.3 Alternative C (t) ..........................................................................
12.13.1.4 Alternative D (t) ..........................................................................
12.13.2 ITEM 2:
12.13.2.1 Alternative A (t)...........................................................................
12.13.2.2 Alternative B (t)...........................................................................
12.13.2.3 Alternative C (t) ..........................................................................
12.13.2.4 Alternative D (t) ..........................................................................
12.14 Total shipping volume for VT's quantity in base contract: ................................
12.14.1 ITEM 1:
12.14.1.1 Alternative A (m�) .......................................................................
12.14.1.2 Alternative B (m�) .......................................................................
12.14.1.3 Alternative C (m�) .......................................................................
12.14.1.4 Alternative D (m�) .......................................................................
ANNEXURE “B” AND SUMMARY OF DATA SPECIFICATION SR - 146
B-63
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REQUIRED OFFERED
12.14.2 ITEM 2:
12.14.2.1 Alternative A (m�) .......................................................................
12.14.2.2 Alternative B (m�) .......................................................................
12.14.2.3 Alternative C (m�) .......................................................................
12.14.2.4 Alternative D (m�) .......................................................................
ANNEXURE “B” AND SUMMARY OF DATA SPECIFICATION SR – 146
B-64
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13. STORAGE & HANDLING
MANUFACTURER’S OFFERED DATA AND PARAMETERS SHOULD BE FILLED IN AGAINST PURCHASER’S REQUIRED VALUES - AS WELL AS IN THE ABSENCE THEREOF UNDER ALL RELEVANT PARAGRAPHS IN THE FREE COLUMNS ON THE RIGHT HAND SIDE.
A DEFINITE ANSWERS (YES OR NO) OR APPROPRIATE COMMENTS SHALL BE GIVEN TO ALL OTHER REQUIREMENTS.
REQUIRED OFFERED
13.1 The equipment package for shipment shall be so designed and carried out as to prevent any damage to equipment during transportation and prolonged (2-3 years) storage under the climatic and environmental conditions described under sub clause 10 ................................
13.2 Manufacturer should supply drawings and description of handling and storage ................................................................................................
13.3 Manufacturer's requirements for Prolonged storage (2-3 years) before erection, taking into account the specific conditions under sub clause 10 ................................................................................................
ANNEXURE “B” AND SUMMARY OF DATA SPECIFICATION SR – 146
B-65
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14. NAME PLATE
MANUFACTURER’S OFFERED DATA AND PARAMETERS SHOULD BE FILLED IN AGAINST PURCHASER’S REQUIRED VALUES - AS WELL AS IN THE ABSENCE THEREOF UNDER ALL RELEVANT PARAGRAPHS IN THE FREE COLUMNS ON THE RIGHT HAND SIDE.
A DEFINITE ANSWERS (YES OR NO) OR APPROPRIATE COMMENTS SHALL BE GIVEN TO ALL OTHER REQUIREMENTS.
REQUIRED OFFERED
14.1 All voltage transformers shall carry the markings specified in:
IEC 61869-1 Cl.6.13
14.1.1 The nameplates shall be written in English, with metric units, with all symbols and characters engraved by laser in accordance with the latest IEC Recommendations ................................
14.1.2 The nameplates material shall be no corrosive stainless steel and they shall be mounted with no corrosive type stainless steel screws, bolts or rivets. Mounting of the nameplates with adhesive is not acceptable ................................
14.2 In addition the following data shall be included:
14.2.1 A diagram showing the use of each secondary winding and its corresponding terminal markings ................................
14.2.8 Value of tan � ................................................................................................
ANNEXURE “B” AND SUMMARY OF DATA SPECIFICATION SR – 146
B-66
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15. NOTES
15.1 TERMS AND CONDITIONS FOR 170 KV VOLTAGE TRANSFORMERS PURCHASING
15.1.1. The list of subcontractors shall be approved by Purchaser.
15.1.2. The missing type tests will be performed in a neutral laboratory approved by Purchaser, according to Specification SR - 146 in presence of Purchaser's representatives.
15.1.3. The voltage transformers shall be supplied only after approval of all type and routine test reports.
15.1.4. The equipment which was type tested cannot be supplied to Purchaser.
15.1.5. Delivery date is limited to 300 days after placing of the order.
15.1.6. The option shall be valid 5 (five) years from signature of the Contract.
15.1.7. The delivery of Option shall be limited to 12 months after placing the order for the Option.
15.1.8. The Contractor shall include in Annexure "C" the prices for the basic scope and option.
15.2 EVALUATION OF CONTRACTOR’S TECHNICAL PROPOSAL
15.2.1. Contractor’s offered data and parameters contained in its offer, as well as definite answers or comments will be evaluated from technical point of view using an expert computer program for decision making.
15.2.2. The decision making process consist of identifying all relevant criteria and attaching to each criterion an appropriate weight for technical evaluation.
15.2.3. All proposals (alternatives) made by different contractors will be evaluated taking into account the same relevant criteria.
15.2.4. The computer program uses a pair wise comparison technique based on statistical analysis to evaluate criteria importance and to rank alternatives (proposals).
15.2.5. The main criteria used for the technical evaluation are according to the main paragraphs in this Specification as follows: Electrical Data, Design and Construction, Tests Requirements, RAM & Maintenance Requirements, Operating Experience (in the world and in Israel), Technical support from Contractor. All subclauses for which different contractors offer different technical data will form the sub-criteria of the relevant main criteria.
15.2.6. All subclauses in this Specification indicated by the symbol � are compulsory requirements. The Bidder's proposal will be almost certainly disqualified, should the proposal clauses do not comply with one of the compulsory requirements. The compliance with compulsory requirements will be enough, but not limited to, for the offer qualification. Bidder's proposal will be disqualified, if its proposal does not meet with the major requirements according to "good engineering" usage for the relevant technology.
ANNEXURE “B” AND SUMMARY OF DATA SPECIFICATION SR – 146
B-67
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15.3 COMMENTS BY MANUFACTURER ON ANNEXURE “B” AND SUMMARY OF DATA
ANNEXURE “B” AND SUMMARY OF DATA SPECIFICATION SR - 146
NOTES
B-68
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15.4 DEVIATIONS FROM REQUIREMENTS
Manufacturer is requested to describe or indicate deviations of the equipment and accessories from all requirements in this Specification.
In case no deviations are mentioned it will be understood that Manufacturer’s offer entirely complies with all requirements in this Specification.
ANNEXURE “B” AND SUMMARY OF DATA SPECIFICATION SR – 146
B-69�
15.5 CONFORMITY WITH PROPOSAL DOCUMENTS
Contractor hereby certifies that he agrees to all provisions of the Proposal Documents unless exceptions are specifically and clearly listed in the proposal and identified as Exceptions.
Contractor’s printed terms and conditions are not considered specific exceptions. Any exceptions, which Contractor has taken, are listed on "Deviations from requirements" in the previous page.
Contractor hereby certifies that he agrees to all conditions of the cover letter of the Israel Electric Corporation Limited, which accompanied the Proposal Documents.
___________________________________
Date of Proposal�������� ���
Signature of Bidder
___________________________________
Print name and title of signing officer
����
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APPENDIX No. 1 SPECIFICATION SR - 140
A1-1
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APPENDICES:
THE ISRAEL ELECTRIC CORPORATION LTD.
ORGANIZATION, QUALITY AND SAFETY DIVISION
QUALITY CONTROL UNIT
Q - APP - 02
4
03/ 2011
PAGE 1 FROM 7
Spec. No.
Rev.
Status
Volume
APPENDICES FOR CONTRACTS / ORDERS TITLE
QUALITY REQUIREMENTS
SUB
TITLE
Appendix 1
Quality Requirements:
1. GENERAL
1.1 In addition to the provisions of the General Conditions – Annexure "A" and without
derogating from the generality there, the Quality Requirements as specified in this
document constitute an integral part of the Contract between the Purchaser and the
Contractor. Implementing these requirements shall not constitute any base/reason, for the
Contractor to change the Contract schedule and/or price.
1.2 The Contractor shall make all the necessary arrangements and prepare all the required
and necessary means to enable IEC's Quality Control Unit Representative (see clause 2)
to review, observe, audit, inspect, test and survey the Work - at any facilities where Work
or any part thereof is performed, including those of Contractor and Sub- Contractors,
without any additional cost to the Purchaser or any change in the Contract schedule.
1.3 The Contractor shall nominate, as part of the execution of the Contract a quality
engineer or a quality specialist to control and manage the quality requirements of the
Contract. This person shall have the authority and responsibility with respect to all
quality requirements of the Contract (including notifying the Purchaser about
inspections, tests, etc.) and shall serve as Purchaser's liaison for quality matters.
1.4 The Contractor shall be responsible that all of the Contract’s quality requirements are
known, accepted and performed by its Sub- Contractors. Special attention should be
given to Contractor's procurement control and its Sub- Contractor's design control,
process and manufacturing control, purchasing control, nonconforming material/events
control and inspection notification. Upon Purchaser's request Contractor shall submit un-
priced copies of purchase orders pertaining to the Work/Contact.
PREPARED BY CHECKED BY APPROVED BY
B. Ben-Akiva
Q.C. UNIT
QUALITY ENGINEERING
Y. Shubinsky
Q.C. Dept. - North
MANAGER
R. Bandel
Q.C. UNIT
MANAGER
DATE AND SIGNATURE ��
06/03/2011 �
�
DATE AND SIGNATURE ��
06/03/2011
DATE AND SIGNATURE ��
06/03/2011
APPENDIX No. 1 SPECIFICATION SR - 140
A1-2�
THE ISRAEL ELECTRIC CORPORATION LTD.
ORGANIZATION, QUALITY AND SAFETY DIVISION
QUALITY CONTROL UNIT
Q - APP - 02
4
03/ 2011
PAGE 2 FROM 7
Spec. No.
Rev.
Status
Volume
APPENDICES FOR CONTRACTS / ORDERS TITLE
QUALITY REQUIREMENTS
SUB
TITLE
2. DEFINITIONS, CLASSIFICATIONS AND ABBREVIATIONS.
2.1. CORRECTIVE ACTION (CA) – As defined in ISO 9000:2005.
2.2. QUALITY PLAN (QP) - Plan, prepared by the Contractor especially for the
Contract, in accordance with ISO 10005 which covers all Contract stages.
2.3. INSPECTION AND TEST PLAN (ITP) ��� a plan,�specifying all the inspections and
tests for the Work throughout all Contract stages (from its initialing through design, in
process inspection, type tests, product qualification, first article inspection, final
inspection/s and test/s, packing, transportation and supply to the Purchaser, erection -
including Site Acceptance Test and commissioning). ITP shall also specify Witness and
Hold Points.
2.4. WITNESS POINT (WP) - a planned visit of the QCUR for purposes indicated in
clause 1.2 for specific point of the ITP or Quality Plan.
2.5. HOLD POINT (HP) – the same as WP but with the distinction that the Contractor is
not permitted to proceed with its planned activities without having received Purchaser’s
written approval.
2.6. NON CONFORMANCE (NC) - deviation from any specified Contract
requirement/s and/or from any quality characteristic of the Work.
2.7. NON CONFORMANCE REPORT (NCR) - a report, on Contractor’s numbered
serial form, describing the details of a Non conformance, from its detection through
disposition and corrective action(s).
2.8. QUALITY CHARACTERISTIC ��� Any identifiable property of the Work (i.e.
Calculation of SAFETY FACTOR of VT with PORCELAIN insulators including steel supporting structure and bolts
1. Dimensions & weights
1.1. VT type .......................................................................................... �������
1.2. VT dimensions and weights acc. to attached drawing ................... �������
1.3. Height of supporting structure ....................................................... 2.5 m
1.4. Height of VT .................................................................................. �������m
1.5. Weight of VT ................................................................................. �������kg
2. Stresses on mounted VT including steel supporting structure
2.1. Minimum failing bending moment for insulator .............................. ������N
2.2. Rated static terminal load .............................................................. 2400 N (including tensile force and weight due to connected conductors)
2.3. Short circuit terminal load .............................................................. 3100 N
2.4. Wind velocity on VT and connected conductors ........................... 44m/sec
2.5. Failing load for supporting structure .............................................. ������kN
3. Earthquake load characteristics
3.1. Horizontal earthquake accelerations ............................................. 0.5 g
3.2. Vertical earthquake accelerations .................................................. 0.25 g
3.3. Frequency ..................................................................................... ��������Hz
3.4. Damping of critical damping .......................................................... ��������
(Design pressure 100% for Alt. B, Mass 100%, Rated terminal load 100%, Wind pressure 30%)
4.1. VT insulator:
4.1.1. Bending moment on bottom insulator ................................... Alt.A Alt.B
4.1.2. By design pressure ............................................................... NA ����kNm
4.1.3. By rated terminal load ........................................................... ����kNm ����kNm
4.1.4. By wind pressure .................................................................. ����kNm ����kNm
20
Please add the calculation of each required value of bending moment.
APPENDIX No. 6 SPECIFICATION SR - 146
�
A6-2�
4.1.5. TOTAL .................................................................................. ����kNm ����kNm
4.1.6. Safety factor for insulator ................................................. ���� ���� (Permissible failing bending moment/ TOTAL bending moment on bottom insulator)
4.2. Supporting structure:
4.2.1. Bending moment on top of supporting structure ................... ����kNm ����kNm
4.2.2. Safety factor for supporting structure .............................. ���� ���� (Permissible failing bending moment/ TOTAL bending moment on top of supporting structure)
4.2.3. Bending moment on bottom of supporting structure ............. ����kNm ����kNm
4.2.4. Safety factor for supporting structure .............................. ���� ���� (Permissible failing bending moment/ TOTAL bending moment on bottom of supporting structure)
5. Condition 2 - Rarely occurring loads
(Design pressure 100% for Alt. B, Mass 100%, Rated terminal load 50%, Wind pressure 100%, Short circuit load 100%)
5.1. VT insulator
5.1.1. Bending moment on bottom insulator ................................... Alt.A Alt.B
5.1.2. By design pressure ............................................................... NA ����kNm
5.1.3. By rated terminal load ........................................................... ���� kNm ����kNm
5.1.4. By wind pressure .................................................................. ���� kNm ����kNm
5.1.5. By short circuit load .............................................................. ����kNm ����kNm
5.1.6. TOTAL .................................................................................. ����kNm ����kNm
5.1.7. Safety factor for insulator .................................................. ���� ���� (Permissible failing bending moment/ TOTAL bending moment on bottom insulator)
5.2. Supporting structure
5.2.1. Bending moment on top of supporting structure ................... ����kNm ����kNm
5.2.2. Safety factor for supporting structure .............................. ���� ���� (Permissible failing bending moment/ TOTAL bending moment on top of supporting structure)
5.2.3. Bending moment on bottom of supporting structure ............. ����kNm ����kNm
5.2.4. Safety factor for supporting structure .............................. ���� ���� (Permissible failing bending moment/ TOTAL bending moment on bottom of supporting structure
APPENDIX No. 6 SPECIFICATION SR - 146
�
A6-3�
6. Condition 3 - Rarely occurring loads
(Design pressure 100% for Alt. B, Mass 100%, Rated terminal load 70%, Wind pressure 10%, Seismic load 100%)
6.1. VT insulator
6.1.1. Bending moment on bottom insulator ................................... Alt.A Alt.B
6.1.2. By design pressure ............................................................... NA ����kNm
6.1.3. By rated terminal load ........................................................... ����kNm ����kNm
6.1.4. By wind pressure .................................................................. ����kNm ����kNm
6.1.5. By seismic load .................................................................... ����kNm ����kNm
6.1.6. TOTAL .................................................................................. ����kNm ����kNm
6.1.7. Safety factor for insulator .................................................. ���� ���� (Permissible failing bending moment/ TOTAL bending moment on bottom insulator)
6.2. Supporting structure
6.2.1. Bending moment on top of supporting structure ................... ����kNm ����kNm
6.2.2. Safety factor for supporting structure .............................. ���� ���� (Permissible failing bending moment/ TOTAL bending moment on top of supporting structure)
6.2.3. Bending moment on bottom of supporting structure ............. ����kNm ����kNm
6.2.4. Safety factor for supporting structure .................................... ���� ���� (Permissible failing bending moment/ TOTAL bending moment on bottom of supporting structure)
7. Recommendation for foundation bolts (taking into considerations the maximum bending moment):
3. Stresses on mounted VT including steel supporting structure
3.1. Rated static terminal load .............................................................. 2400 N (including tensile force and weight due to connected conductors)
3.2. Short circuit terminal load .............................................................. 3100 N
3.3. Wind velocity on VT and connected conductors ............................ 44m/sec
3.4. Failing load for supporting structure ............................................... ������kN
4. Earthquake load characteristics
4.1. Horizontal earthquake accelerations .............................................. 0.5 g
4.2. Vertical earthquake accelerations .................................................. 0.25 g
4.3. Frequency ..................................................................................... ��������Hz
4.4. Damping of critical damping ........................................................... ��������
(Design pressure 100% for Alt. D, Mass 100%, Rated terminal load 100%, Wind pressure 30%)
5.1. VT insulator:
5.1.1. Bending moment on bottom insulator .................................... Alt.C Alt.D
5.1.2. By design pressure ............................................................... NA ����kNm
5.1.3. By rated terminal load ........................................................... ����kNm ����kNm
5.1.4. By wind pressure .................................................................. ����kNm ����kNm
5.1.5. TOTAL .................................................................................. ����kNm ����kNm
5.1.6. Safety factor for insulator ................................................. ���� ���� (Permissible failing bending moment/ TOTAL bending moment on bottom insulator)
5.2. Supporting structure:
5.2.1. Bending moment on top of supporting structure .................... ����kNm ����kNm
5.2.2. Safety factor for supporting structure ............................... ���� ���� (Permissible failing bending moment/ TOTAL bending moment on top of supporting structure)
5.2.3. Bending moment on bottom of supporting structure ............. ����kNm ����kNm
5.2.4. Safety factor for supporting structure ............................... ���� ���� (Permissible failing bending moment/ TOTAL bending moment on bottom of supporting structure)
6. Condition 2 - Rarely occurring loads
(Design pressure 100% for Alt. D, Mass 100%, Rated terminal load 50%, Wind pressure 100%, Short circuit load 100%)
6.1. VT insulator
6.1.1. Bending moment on bottom insulator .................................... Alt.C Alt.D
6.1.2. By design pressure ............................................................... NA ����kNm
6.1.3. By rated terminal load ........................................................... ���� kNm ����kNm
6.1.4. By wind pressure .................................................................. ����kNm ����kNm
6.1.5. By short circuit load ............................................................... ����kNm ����kNm
6.1.6. TOTAL .................................................................................. ����kNm ����kNm
6.1.7. Safety factor for insulator .................................................. ���� ���� (Permissible failing bending moment/ TOTAL bending moment on bottom insulator)
21
Please add the calculation of each required value of bending moment.
APPENDIX No. 7 SPECIFICATION SR - 146
�
A7-3�
6.2. Supporting structure
6.2.1. Bending moment on top of supporting structure .................... ����kNm ����kNm
6.2.2. Safety factor for supporting structure ............................... ���� ���� (Permissible failing bending moment/ TOTAL bending moment on top of supporting structure)
6.2.3. Bending moment on bottom of supporting structure ............. ����kNm ����kNm
6.2.4. Safety factor for supporting structure ............................... ���� ���� (Permissible failing bending moment/ TOTAL bending moment on bottom of supporting structure
7. Condition 3 - Rarely occurring loads
(Design pressure 100% for Alt. D, Mass 100%, Rated terminal load 70%, Wind pressure 10%, Seismic load 100%)
7.1. VT insulator
7.1.1. Bending moment on bottom insulator .................................... Alt.C Alt.D
7.1.2. By design pressure ............................................................... NA ����kNm
7.1.3. By rated terminal load ........................................................... ���� kNm ����kNm
7.1.4. By wind pressure .................................................................. ����kNm ����kNm
7.1.5. By seismic load ..................................................................... ����kNm ����kNm
7.1.6. TOTAL .................................................................................. ����kNm ����kNm
7.1.7. Safety factor for insulator .................................................. ���� ���� (Permissible failing bending moment/ TOTAL bending moment on bottom insulator)
7.2. Supporting structure
7.2.1. Bending moment on top of supporting structure .................... ����kNm ����kNm
7.2.2. Safety factor for supporting structure ............................... ���� ���� (Permissible failing bending moment/ TOTAL bending moment on top of supporting structure)
7.2.3. Bending moment on bottom of supporting structure ............. ����kNm ����kNm
7.2.4. Safety factor for supporting structure .................................... ���� ���� (Permissible failing bending moment/ TOTAL bending moment on bottom of supporting structure)
8. Recommendation for foundation bolts (taking into considerations the maximum bending moment):