Consultant Specification Power Xpert CX_data Center

Eaton Industries (Netherlands) B.V.Europalaan 202, 7559 SC HengeloPostbus / P.O. Box 23, 7550 AA HengeloThe Netherlandstel.: +31 (0)74 246 9111fax: +31 (0)74 246 4444

Consultant Specification Power Xpert® CX

Datacenter application

LV Main- and subdistribution

INDEX1. Scope2. Service conditions3. Codes and standards4. Supply system and fault level5. General requirements and arrangements6. Safety requirements for operation and maintenance7. Main busbar and dropper bar system8. Incoming units9. Bus section units10. Motor starter units11. Outgoing feeder units12. Internal wiring and terminals13. Cable entry and - termination14. Earthing15. Labeling16. Painting17. Spares and maintenance requirements18. Inspection and testing19. Off-loading and site storage20. Erection and commissioning 1. SCOPE1.1. This standard covers the requirements for indoor, low voltage, industrial type switchgear

and motor control centre, comprising busbars and functional units, such as incoming-, bus section -, motor starter- and outgoing feeder units.

1.2. This standard shall be read in conjunction with the requisition.

2. SERVICE CONDITIONS2.1. The equipment shall be suitable for operating indoors in a safe (non-hazardous) location

for use in a pollution degree 3 environment (IEC 61439-1, par. 7.1.3). 2.2. The ambient temperature inside the substation / switch room is maximum 40°C, with an

average of 35°C over 24 hours. 2.3. The altitude is less than 2000 meters.

3. CODES AND STANDARDS3.1. The equipment offered shall comply with the latest editions of:

This specification The applicable national regulations. The following international standards:

IEC 60038 – IEC Standard voltagesIEC 60051 – Direct acting indicating analogue electrical measuring instruments and their

accessories – Part 1: Definitions and general requirements common to all partsIEC 60059 - Standard current ratingsIEC 60044-1 – Instrument transformers – Part 1 : Current transformersIEC 60044-2 – Instrument transformers – Part 2 : Inductive voltage transformersIEC 60112 - Method for determining the comparative and the proof tracking indices of solid

insulation materials under moist conditionsIEC 60269 - Low voltage fusesIEC 60529 - Degrees of protection provided by enclosures (IP Code)IEC 60947-1 - Low Voltage Switchgear and Control gear – Part 1: General rulesIEC 60947-2 - Low Voltage Switchgear and Control gear – Part 2: Circuit BreakersIEC 60947-3 - Low Voltage Switchgear and Control gear – Part 3: Switches, disconnectors,

switch-disconnectors and fuse-combination unitsIEC 60947-4-1 - Low Voltage Switchgear and Control gear – Part 4-1: Contactors and

motor-starters – Electromechanical contactors and motor-startersIEC 61439-1 - Low voltage switchgear and controlgear assemblies, Part 1: General rules

IEC 61439-2 - Low voltage switchgear and controlgear assemblies, Part 2: Power switchgearand controlgear assemblies.

IEC TR 61641 – Enclosed low voltage switchgear and controlgear assemblies – Guide fortesting under conditions of arcing due to internal fault

4. SUPPLY SYSTEM AND SHORT CIRCUIT LEVEL4.1. The system characteristics shall be as specified on the requisition.4.2. The prospective short circuit current (rms and peak value) at the incoming terminals of

the switchgear shall be as specified on the requisition.4.3. The switchgear supplier shall submit, at quotation stage, a test report (design verification

in accordance with 61439-2) from an independent authority to proof the capability to withstand the specified prospective short circuit fault current.

4.4. For determining the fault level of functional units, i.e. its wiring and components, the current limiting effect of protection devices may be taken in account. This paragraph may also be applicable for dropper bar systems, provided an internal fault between the main busbar system and the protection devices in the connected functional units, is a remote possibility.

5. GENERAL REQUIREMENTS AND ARRANGEMENTS5.1. CONSTRUCTION5.1.1. The switchgear shall be of a modular design, flush fronted, floor mounting and self-

supporting. The complete system shall be designed to be front access.5.1.2. The switchgear shall comply with form 3b or 4b according to IEC 61439-2, appendix AA.5.1.3. The maximum height shall not exceed 2000 mm., excluding a possible separate

foundation frame and / or ventilation cowl.5.1.4. The general construction shall be sufficiently rigid to accept the weight of a man

(nominally 100 kg.) on the top without harmful distortion.5.1.5. A suitable lifting facility shall be available per shipping section.5.1.6. The switchgear enclosure protection degree shall be IP31 minimum according to

IEC-60529.5.1.7. The design of the switchgear shall permit the erection of extension cubicles at either end

without isolating the switchgear until it is required to connect the busbars together and without the need for metal cutting equipment or drilling busbars.

5.1.8. The switchgear / MCC shall be designed for a diversity factor of 0,8 for vertical sections with two or more functional units. The switchgear/MCC supplier shall submit, at quotation stage, test reports to proof these factors, taking in account the temperature rise limits according to the IEC standards.

5.1.9. All withdrawable units shall be so designed, that disconnection of any terminated main- or Auxiliary wiring / cables is not necessary.

5.1.10. All structure dimensions shall be according to the DIN 41-488 standard.

5.2. FUNCTIONAL UNITS5.2.1. Incoming- and bus section unit circuit breakers shall be of the withdrawable type.5.2.2. Motorstarters up to 132 kW and outgoing feeders up to 630 A shall be of the fully

withdrawable type. All higher rated units shall be of the fixed type.

5.3. SPARE AND SPACE COMPARTMENTS5.3.1. "Spare" compartments shall be fully equipped for the function and rating as specified.5.3.2. "Space" compartments shall be suitable to be equipped / upgraded at a later date

without de-energizing the switchgear/MCC or parts of it.

5.4. COMPONENTS5.4.1. Circuit breakers (ACBs) shall have a stored-energy closing and breaking mechanism.

They shall be rated according to IEC 60947-2 category B. Circuit breakers shall have a mechanical ON / OFF indication on the front.

5.4.2. Contactors shall have a making / breaking capacity according to IEC 60947. AC21 for incomers and outgoing feeders and AC23 for motor starters. The ON/OFF indications shall clearly be indicated on the front by means of the handle or a mechanical indicator.

5.4.3. Current transformers shall be of the epoxy enclosed type and provided with a removable short circuit link. The accuracy shall be 1M5 (incomers and outgoing feeders), resp. 3M5 (motorstarters) for measuring and 5P10 for protection purposes. The secondary side shall be 5 A for incomers and outgoing feeders and 1 A for motorstarters.

5.4.4. Measuring devices shall be flush mounted and shall have an enclosure with a degree of protection of at least IP41. Meters used for incoming units shall be 96 x 96 mm. and for outgoing feeders and motorstarters 48 x 48 mm. Number and type of required meters shall be specified.

5.4.5 The trip class of the motor overload protection in the circuit breaker shall be at least of trip class 10 in accordance with IEC 60947-4-1.

5.5. ARRANGEMENTS5.5.1. Unless otherwise specified, the manufacturer is free to arrange the items in the best

engineered manner.5.5.2. The functional (withdrawable) units are to be rated such, that they can be placed at any

height.5.5.3. Large (fixed) starters are preferred to be at low level.5.5.4. Each switchgear / MCC shall include

- 10% spare of the installed outgoing feeder units, with a minimum of one per each compartment size installed.- 10% space of the installed motorstarter units, with a minimum of one per each compartment size installed.

6. SAFETY REQUIREMENTS FOR OPERATION AND MAINTENANCE.6.1. INTERNAL ARC RESISTANCE6.1.1. The switchgear shall be so designed, that the development of internal arcs, under

normal operating conditions, is prevented as much as possible.6.1.2. The functional units shall be so designed that a possible internal arc will be restricted to

the concerning compartment, without damage to any adjacent compartments and danger to persons in the proximity of the switchgear.

6.1.3 The switchgear shall be tested to confirm successful assessment of criteria for personnel protection as described in the IEC TR 61641.

6.2. INTERNAL SEPARATION6.2.1. The segregation between the horizontal main busbar compartment and any other

compartment shall be IP2X minimum.6.2.2. The segregation between a functional unit towards other functional units shall be IP2X

minimum.6.2.3. Horizontal segregations shall be so designed that falling of metal parts (e.g. nuts, bolts,

etc.) from one compartment to another is prevented.

6.3. ACCESSIBILITY6.3.1. A mechanical interlock shall be provided on all "switching" enclosures to prevent the

cover or door being opened unless the component is in the "off" position.6.3.2. With any door open or unit withdrawn it shall not be possible to insert an IP2X test finger

(IEC 60529) on to live parts.6.3.3. To comply with item 6.3.2. shrouding is mandatory, there shall be no use of shutters to

achieve the IP2X rating.

6.4. MECHANICAL INTERLOCKS6.4.1. The mechanism operating handles of all air circuit breakers, switches and fused-

switches shall be suitable for padlocking in the "off" position only.6.4.2. On withdrawable units, an interlock shall prevent the unit being withdrawn unless it (or

the isolating device) is in the "off" position.Also it shall not be possible to close it (or the isolating device) with the unit in a partly withdrawn position.

6.4.3. On the incoming feeders of switchgear / MCC 's, coupled by means of a bus coupler, key interlocks of the “Ronis” type shall be provided to allow closing of the appropriate breakers.

6.4.4 The units shall be fully withdrawable and the different positions of withdrawable parts (connected, test, isolated and removed) shall be achieved without using tools in accordance with table 103 of the IEC 61439-2. The degree of protection in the test and isolation position shall be at least IP2X.

6.4.5 The different positions of withdrawable parts shall all be suitable for padlocking in their defined positions.

7. MAIN BUSBAR AND DROPPER BAR SYSTEMS7.1. All current-carrying parts shall be of hard or medium hard drawn, high conductivity

copper.7.2. Main busbars, including neutral and earth, shall be located in the busbar compartment of

the switchgear positioned in the rear to allow for a maximum distance between operator and busbars.

7.3. Busbars and dropper bars shall be fully rated to the fault levels as specified7.4. Busbars shall be fully rated to the current carrying capacity as specified. Neutral bars

shall be 100% of the current rating and dimension of the phase bars.7.5. Busbar joints and tee-offs shall preferably be clamped connections.

For all electrical main connections the correct torque shall be applied for fixing bolts. The switchgear supplier shall indicate the applicable torques in the maintenance manual.

7.6. Main busbars shall be readily suitable for future extension at both sides.7.7. Main busbars shall be of the same current ratings and dimensions throughout their

lengths.

8. INCOMING UNITS8.1. Incoming units shall be provided with an independent manually operated air circuit

breaker as specified.8.2. If air circuit breakers are used, they shall be of the draw-out type. They shall be provided

with a direct working short circuit protection and time delayed overcurrent protection of the electronic type.

8.3. Each incoming unit shall be mounted in a separate compartment.8.4. Each incoming unit shall be provided with a separate measuring compartment. The type and number of required meters shall be as specified in the requisition.

9. BUSSECTION UNITS9.1. Bussection units shall be provided with independent manually-operated fuse-switches or

isolating switches as specified.9.2. Each bussection unit shall be housed in a separate compartment.

10. MOTORSTARTER UNITS10.1. The motorstarter coordination shall be type "2" according to IEC 60947-4-1.10.2. Each motorstarter unit shall be provided with an independent manually operated circuit

breaker, operable from the front and, capable of breaking the stalled motorcurrent of the largest motor, which that unit is allowed to feed.

10.3. Current transformers for remote ammeters shall be provided if specified. If local ammeters are specified they shall have a compressed overload scale (6 times FLC).

10.4. The control voltage shall be 230V AC, derived from the auxiliary busbar located in the cable compartment. The auxiliary busbar shall be at least IP2X.

10.5. One red run and one green stop pilot light shall be provided on the front of each unit. On 2-speed and reversing starters pilot lights shall be provided as specified.

10.6. The use of resistors shall not be allowed.10.7. Unless otherwise specified, all motorstarter units shall be of the "direct-on-line" type for

use with 3-phase induction motors.10.8. Reversing and 2-speed contactors shall be electrically interlocked to prevent contactors

closing at the same time.10.9. Starters of the same size and starting type shall be completely interchangeable.

11. OUTGOING FEEDER UNITS11.1. Outgoing feeder units shall be circuit breakers.11.2. Measuring instruments shall be provided if specified.

12. INTERNAL WIRING AND TERMINALS 12.1. All internal wiring shall be suitable sized in accordance with the applicable standards

and / or manufacturer’s instructions for the used components, with a minimum of 1.5 sq. mm. Secondary wiring from current transformers shall be at least 2,5 sq. mm.

12.2. Auxiliary wiring is identified with markings in black letters / figures onto the insulation or by means of white clip-on code markers with black letters / figures. The marking shall be in accordance with the related wiring diagrams.

12.3. No more than one wire shall be connected to each terminal, unless the terminal is fit to connect to wires. Where common connections are required, terminal jumpers shall be used.

12.4. All internal wiring shall be connected to the same side of the terminal block, the other side shall only be used for external wiring.

12.5. Main cable terminals allowing the conductors to be connected without the use of cable lugs of any type is strongly preferred. They shall guarantee sufficient contact pressure without damaging the cable conductors.

12.6. Terminals for auxiliary wiring and cables shall be of the self-clamping type.12.7. Terminals shall be identified in accordance with the related wiring diagram.12.8. It shall be possible to safely carry out any work on the main- and auxiliary wiring of a

unit, when isolated, with all other units "live".

13. CABLE ENTRY AND TERMINATION13.1. For incomers it shall be specified if cable(s) or busduct(s) are used. The direction of

busduct(s) will be as specified. All outgoing cables will be as specified.13.2. Switchgear shall have facilities for the entry of cables from either top or below on

incoming feeders and top and / or bottom on outgoing units with a cable compartment.13.3. Vertical sections with two or more functional units shall be provided with a separate

vertical cable compartment to run the full height of the equipment. The width of this compartment shall be at least 400 mm. Facilities for fixing the cables shall be provided within this compartment.

13.4. Unless otherwise specified, the purchaser shall provide the necessary cable glands, -clamps and -lugs.

13.5. It shall be possible to cable any outgoing unit in complete safety with all other outgoing units "live".

13.6. Cable way doors shall be equipped with a three-point locking system.

14. EARTHING14.1. The switchgear shall be provided with a main earth bar along the whole length, located

in the busbar compartment. The minimum size shall be 40 x 10 mm.14.2. A vertical earth bar shall be provided in each vertical section along the whole height of

the equipment. The minimum size shall be 30 x 10 mm. It shall have provisions for termination of an earth conductor per specified cable.

14.3. The earth bars shall be copper and suitable sized to cope with the fault current level and fault clearing time under the prospective short circuit conditions for a solidly earthed system.

14.4. To these earth bars shall be bonded the switchgear enclosures, i.e. all individual vertical sections, all fixed and withdrawable-type equipment when in service position and all metal cable sheats. When earth continuity of removable or withdrawable parts is arranged via metal support surfaces, the switchgear / MCC supplier shall provide type test certificates, indicating fulfillment of the requirements of effective conductivity and the precautions necessary to guarantee permanent good conductivity.

14.5. Doors mounted with voltage carrying equipment shall be earthed by means of a suitable sized flexible copper conductor.

15 LABELLING15.1. Labels shall be "resopal" or similar, with black letters on a white background. They shall

be fixed to the switchgear by means of proven durable self-threading screws or rivets or by insertion into the appropriate mounting slot.

15.2. Per compartment one label, indicating the compartment number (A, B, C, etc.) and the connected equipment and/or equipment number, shall be provided. Minimum label dimension 63 x 21.7 mm. Letter height 4 mm.

15.3. Each removable or withdrawable unit shall contain the same equipment as indicated on the front door.

15.4. Safety shutters for ACB’s shall be clearly labeled with 25 mm high white letters on a red background, as follows:- Busbar shutters marked "BUS-BAR"- Incoming circuit shutters marked "INCOMING SUPPLY"

15.5. Removable safety shrouds shall be fitted with "DANGER" warning labels.

16. PAINTING16.1. The standard painting method is:

- pre-treatment (degreased, phosphate coating, made passive)- powder coating (thermosetting powder with epoxy resin as base, applied

electrostatically in average layer thickness of 60 – 70 micrometers)16.2. The color of all outer walls (rear wall, top plates, compartment covers and external

sidewalls) shall be RAL7035.16.3. Profiles, support brackets, mounting plates, separations, partitions, etc. inside the

enclosure shall be of galvanized sheet steel.

17. SPARES AND MAINTENANCE REQUIREMENTS 17.1. The manufacturer shall submit a recommended spare parts list.17.2. The manufacturer shall state and price separately in his quotation all necessary special

tools and equipment required for proper maintenance and testing at site.17.3. The manufacturer shall submit together with the switchgear an erection, operating and

maintenance manual.

18. INSPECTION AND TESTING 18.1. The purchaser will specify whether for each switchgear a factory acceptance test,

witnessed by purchaser or his representative, will be required.18.2. Factory acceptance tests shall be carried out on the complete assembled switchgear, as

follows:- visual inspection to verify whether the composition of the assembly is in accordance

with the approved order documents- Measurement of the insulating resistance- High-voltage test in accordance with IEC 61439, item 11.9- Check of electrically operated switchgear- Functional test of mechanical interlocks- Check on interchangeability of equal components

18.3. Complete records of the above inspection and tests shall be compiled into one inspection document by the manufacturer. A copy shall be sent to the purchaser.

19. OFF-LOADING AND SITE STORAGE19.1. The equipment shall not be dispatched from the manufacturer's work until a date and

time of arrival at the site is agreed with the purchaser. This is to ensure that proper arrangements are made for receipt and off-loading.

19.2. The manufacturer shall indicate in his quotation whether facilities for off-loading should be arranged by purchaser.

19.3. The manufacturer shall indicate in his quotation the minimum conditions for temporary storage at site.

20. ERECTION AND COMMISSIONING20.1. The purchaser will specify whether erection, supervision of erection, or no erection is

required from the manufacturer.20.2. The term "erection" shall be interpreted as “fixing and leveling on prepared foundations

and the bolting together of sections, busbars, and other loose items, to form a complete unit”.

20.3. The purchaser will specify whether commissioning is required from the manufacturer.

SPECIFICATION SHEET

POWER DISTRIBUTION CENTER POWER XPERT® CX

[Default spec] [Optional spec]

STANDARDS AND REGULATIONS:

- IEC 61439-1, IEC 61439-2- Standard specification Power Xpert CX (see page 2 till 8)

INSTALLATION ENVIRONMENT:

- Location: Indoor- Altitude: <= 2000 m- Ambient temperature (24 hr average): 35 °C- Pollution degree: 3- Degree of protection: [IP31], [IP55]

SUPPLY DETAILS:

- Earthing system: [TNS], [TNC]- External connection : L1, L2, L3, N, PE- Rated Voltage (Un): [400 V], [415 V]- Rated frequency (fn): [50 Hz], [60 Hz]- Rated short-term withstand current (Icw): [50 kA], [65 kA], [80kA]

ASSEMBLY AND ERECTION:

- Incoming cables: [Bottom], [Top]- Outgoing cables: [Bottom], [Top]- Type of access: Front- Height: 2000mm- Internal form of separation: [3b], [4b]

MAIN BUSBAR SYSTEM:

- Position: Rear- Rated current (In): [1200 A], [1600 A], [2000 A], [2500 A], [2500A], [3200A]- Rated short time withstand current (Icw): [50 kA / 1s], [65 kA / 1s], [80kA / 1s] - Rated peak withstand current (Ipk): [110 kA], [143 kA], [176 kA]- Number of bars: L1, L2, L3, N, PE- Neutral rating: N = 100 %

VERTICAL BUSBAR SYSTEM:

- Rated current (In): [1000A], [2000 A]- Rated short time withstand current (Icw): [50 kA / 1s], [65 kA / 1s], [80kA / 1s]- Number of bars: L1, L2, L3, N- Neutral rating: N = 100 %

INCOMING FEEDERS AND BUSCOUPLERS

Eaton Air circuit breaker- [type NRX], [type Magnum]- [3-pole] [4-pole]- Rated current (In): [1600 A], [800 A], [1000 A], [1250 A], [2000 A], [2500 A], [3200 A], [4000A]- Rated ultimate short circuit breaking capacity (Icu): [50 kA], [65 kA], [80kA]- Withdrawable design- Mechanical ON and OFF pushbutton- Pushbutton padlocking facility- Trip unit, type Eaton Digitrip 520i LSI- Auxiliary Switch local / remote- Auxiliary Switch open / close- Signal lamps open / close / trip

OUTGOING FEEDER UNITS (OF) ≤ 630 A

Eaton Moulded Case Circuit Breaker, type NZM- [3-pole] [4-pole]- Rated current (In): [160 A], [250 A], [400 A], [630 A]

- Withdrawable design- Moulded Case Circuit Breaker interlocked with the door which can only be opened in

OFF-position of the switch- The units shall be fully withdrawable and the different positions of withdrawable

parts (connected, test, isolated and removed) shall be achieved without using tools in accordance with table 103 of the IEC 61439-2.

- The degree of protection in the test and isolation position shall be at least IP2X.- Padlock facility in all appropriate positions