DATA SHEET - 245KV GIS DOC. NO. SK-GS-03-1169, R0 3 X 37 MW SAWRA KUDDU HYDRO ELECTRIC PROJECT GUARANTEED TECHNICAL & OTHER PARTICULARS OF 245kV GIS Sr. No. Description of Technical Particulars Requirement Vendor’s Data 220 kV GIS General 1 Name of manufacture : As per vendor list Hyundai 2 Place of manufacture, inspection : Bidder to furnish Korea 3 Manufacturer's type / designation : Bidder to furnish 300SR 4 Rated voltage : 220 kV 220 kV 5 System frequency : 50 Hz 50 Hz 6 Maximum(continuous)service rated : 245 kV 245 kV 7 Normal current rating - Generator Transformer feeder : 2000 Amp. 2000 Amp. - Line feeder circuit : 2000 Amp. 2000 Amp. - Bus coupler circuit : 2000 Amp. 2000 Amp. 8 Short time current rating - 1 second rms. : 40 kA 50 kA - 3 second rms. : 40 kA 50 kA 9 Rated Lightning impulse withstand - Phase to earth : 1050 kV (peak) 1050 kV (peak) - Across open contacts : 1200 kV (peak) 1200 kV (peak) 10 Rated Switching surge withstand Bidder to furnish - Phase To earth : N/A - Phase to phase : N/A - Across open contacts : N/A 11 Rated one minute power frequency withstand voltage - Phase to earth : 460 kV (rms) 460 kV (rms) - Across open contacts : 530 kV (rms) 530 kV (rms) 12 Maximum temperature rise over ambient of 35.5 : As per IEC 694 /40 Deg C As per IEC60694 Table 3 13 Thermal rating of current carrying parts at 220 kV for the rated symmetrical short : 1 Sec 3 Sec 14 Altitude upto which the switchgear shall operate : 2000 m 2000m 15 Ambient conditions of the operation of the GIS : - 10 Deg C to 50 Deg C -10℃~50℃ 16 Earthing details of enclosure : Solidly earthed Solidly earthed 17 Density and pressure of filling gas in various compartments of the enclosure at 200 C Bidder to furnish : (i) Compartments in kPa : 500 - 750 Kpa 500kPa (ii) Circuit Breakers in kPA : 500 - 750 Kpa 700kPa 18 Features adopted for preventing burn through in the various enclosures of SF6 GIS : through release of pressure relief device / rupture Rupture disc Time in m sec to withstand an internal flashover without burn : As per IEC 300ms 19 Guaranteed life of the GIS : 30 years 30 years
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DATA SHEET - 245KV GISDOC. NO. SK-GS-03-1169, R0
3 X 37 MW SAWRA KUDDU HYDRO ELECTRIC PROJECT
GUARANTEED TECHNICAL & OTHER PARTICULARS OF 245kV GIS
Sr. No.Description of Technical Particulars Requirement Vendor’s Data
220 kV GIS General1 Name of manufacture : As per vendor list Hyundai
2 Place of manufacture, inspection & testing : Bidder to furnish Korea
3 Manufacturer's type / designation : Bidder to furnish 300SR
4 Rated voltage : 220 kV 220 kV
5 System frequency : 50 Hz 50 Hz
6 Maximum(continuous)service rated voltage : 245 kV 245 kV
7 Normal current rating- Generator Transformer feeder circuit : 2000 Amp. 2000 Amp.
- Line feeder circuit : 2000 Amp. 2000 Amp.- Bus coupler circuit : 2000 Amp. 2000 Amp.
8 Short time current rating- 1 second rms. : 40 kA 50 kA- 3 second rms. : 40 kA 50 kA
9 Rated Lightning impulse withstand voltage- Phase to earth : 1050 kV (peak) 1050 kV (peak)- Across open contacts : 1200 kV (peak) 1200 kV (peak)
10 Rated Switching surge withstand voltage Bidder to furnish- Phase To earth : N/A
- Phase to phase : N/A
- Across open contacts : N/A
11Rated one minute power frequency withstand voltage- Phase to earth : 460 kV (rms) 460 kV (rms)
- Across open contacts : 530 kV (rms) 530 kV (rms)
12Maximum temperature rise over ambient of 35.5deg. C.
:As per IEC 694 /40Deg C
As per IEC60694 Table 3
13Thermal rating of current carrying parts at 220kV for the rated symmetrical short circuit current
:1 Sec 3 Sec
14Altitude upto which the switchgear shall operate satisfactorily :
2000 m 2000m
15Ambient conditions of the operation of the GIS
:- 10 Deg C to 50Deg C
-10 ~50℃ ℃
16 Earthing details of enclosure : Solidly earthed Solidly earthed
17Density and pressure of filling gas in various compartments of the enclosure at 200 C
Bidder to furnish:
(i) Compartments in kPa : 500 - 750 Kpa 500kPa
(ii) Circuit Breakers in kPA : 500 - 750 Kpa 700kPa
18Features adopted for preventing burn through in the various enclosures of SF6 GIS
:through release of pressure relief device / rupture disc
Rupture disc
Time in m sec to withstand an internal flashover without burn through :
As per IEC 300ms
19 Guaranteed life of the GIS : 30 years 30 years
DATA SHEET - 245KV GISDOC. NO. SK-GS-03-1169, R0 3 X 37 MW SAWRA KUDDU
HYDRO ELECTRIC PROJECT
Sr. No.Description of Technical Particulars Requirement Vendor’s Data
20
a) Guaranteed number of loaded/unloaded operations of various equipments of SF6 GIS i.e. circuit breakers, disconnectors, grounding switches (please mention item wise).
:
CB - 2000 ( M1) CB: 10000(M2)
:*DS/ES/H-ES –1000 / 2000
DS/ES/HSES: 2000
b) Max. number of interruptions at rated S.C current with associated recovery voltage the Circuit Breaker is capable to withstand without requiring change of any parts.
:
10 to 21 Nos. 20 @40kA
21a) Guaranteed Average leakage of SF6 gas from the equipment and percentage per year.
(i) From complete GIS/ year:
less than or equal to1%
0.5
(ii) From compartments /year:
less than or equal to2%
0.5
b) Quantity of SF6 gas required to completely charge the 3-pole equipment including any tank storage system
:Bidder to furnish Approx. 204kg/bay
(without GIB)
c) Quantity of SF6 gas required for largest gas compartment :
Bidder to furnish 84kg/3-phae
d) Operating pressure Bidder to furnish- Circuit breaker : 6-7 bar 700kPa
- Others : 6-7 bar 500kPa
22Details of the features existing in the equipment to carry out P.D. measurements at works/site
:UHF/ Acoustic UHF sensor
23Details of the control wiring used in theEquipment
:2.5 sq.mm, 750V 2.5 sq.mm, 750V
24The extent of field welding required for site
assembly, if any along with the procedure to be adopted by the firm at site
:Bidder to furnish N/A
25
Details of the documents, drawings & operating principles of the major components of the equipment, presenting a clear picture of the fundamental principle, general arrangements and operating mechanism photographsenclosed showing the basic
:
Bidder to furnish Yes
26Details of the flow diagram/ drgs. Enclosed showing all valves and pressures involved, for the hydraulic and gas system.
:Bidder to furnish Yes
27
Details of the test data enclosed including test data of the parts indicating the ability of the equipment (including high speed grounding switches)
:
Bidder to furnish Yes
28
The values of resistors inserted in the line circuit breaker during closing operations, if any, along with the length of time the resistors are left in the circuit.
:
Bidder to furnish N/A
29Methods adopted to limit switching surges
for breaker and disconnectors :Bidder to furnish N/A
30Values of maximum switching surges generated
:<2.6 PU <2.6 PU
DATA SHEET - 245KV GISDOC. NO. SK-GS-03-1169, R0 3 X 37 MW SAWRA KUDDU
HYDRO ELECTRIC PROJECT
Sr. No.Description of Technical Particulars Requirement Vendor’s Data
31Heat generated in K.W. when the complete switchgear is operating at its rated capacity :
Bidder to furnish 14.4
32Noise level of Circuit Breaker at a distance of
5m from it.:
80 dB 80
33 Material used in fabrication (Copper, Aluminum, Silver, Stainless Steel etc)
a) Breaker main contact surfaces.:
Copper with silver plated
Copper with silver plated
b) Disconnecting switch contact surfaces.:
Copper with silver plated
Copper with silver plated
c) Grounding switch contact surfaces.:
Copper with silver plated
Copper with silver plated
d) Internal bus. : Aliminum Aluminum
e) Internal bus contact surfaces.:
Aluminum with silver plated
Aluminum with silver plated
f) Bus enclosure. : Aliminum Aluminum
g) Terminal pads. : Tinned copper Tinned copper
Terminal pad contact surface. : Tinned copper Tinned copper
Bellows or compensating units : Stainless steel Stainless steel
34 Operating Mechanism- Breaker : Hydraulic / spring Motor spring
- Disconnecting switch : Motor Motor
- High speed fault making grounding switch:
Motor/spring charged
Motor spring
-Safety grounding switch : Motor Motor
35
Time required to recharge the operating system to a fully charged condition after four successive operations (without pumping action)
:
Hydraulic - 5 minSpring - 15 Sec
15 Sec
36Details of provisions made for movement of maintenance personnel on the equipment
:Bidder to furnish Platform
(The location of platform will be provided at the detail design stage)
37a) Capacitance per meter of the enclosed bus
:50 pico farads/metre
60 pico farads/mtre
b) Max. potential rise of enclosure at 50kA (ref voltage of low freq) in volts :
Bidder to furnish Below 100V
c) Bus charging current in amps : Bidder to furnish 0.25A
38
Surge impedance in ohms of the enclosed bus (The bidder should furnish the method used for the calculations of surge impedance and capacitance of insulated bus).
:
80 Ohm 80
39a) Electric resistance at 20 deg C in micro ohms/metre.- Bus enclosure : 8.3 3.8
- Internal bus : 11.1 12.7
b) Data used for calculation of electric resistance in (a)- Cross sectional area of bus conductor : 3043 sqmm 2607
- Cross sectional area of bus enclosure. : 8999 sqmm 7891
-Conductivity of material of bus conductor : 0.03 Ohm sq m /mtr 51%
- Conductivity of material of bus enclosure. : 0.05 Ohm sq m /mtr 40%
-Current density in bus conductor. : 2 A/mm2 1A/mm2
DATA SHEET - 245KV GISDOC. NO. SK-GS-03-1169, R0 3 X 37 MW SAWRA KUDDU
HYDRO ELECTRIC PROJECT
Sr. No.Description of Technical Particulars Requirement Vendor’s Data
40Maximum Guaranteed power losses in the bus bar per single phase meter at rated voltage and current at 40ºC ambient temp in
a) Enclosure : 25 W 16 W
b) Conductor : 50 W 50 W
41 Dimensions : Bidder to furnisha) Bus enclosure outside diameter : 322mm
b) Bus enclosure wall thickness : 8mm
c) Internal bus, outside diameter : 93mm
d) Internal bus thickness : 10mm
42Weight (The weight of each assembled bay
to be indicated separately)Bidder to furnish
a) Generator Transformer Bay : Approx.10,000kg
b) 220 kV XLPE cable feeder Bay : Approx.8,000kg
c) 220 kV Bus coupler Bay : Approx. 5,000kg
d) Bus Bars : Approx. 3,000kg
II Equipment included in GISA. Circuit Breaker*(The following particulars for each type of breaker shall be furnished)
1 Name plate data- Manufacturer's name : As per vendor list Hyundai
16 Details of anti pumping device : electrical trip free electrical trip free
17 Rated line-charging breaking current : 125A 125 A
18 Rated small capacitive breaking current : Bidder to furnish 250 A
19Rated small inductive breaking current Generator transformer, Line & Bus coupler breakers, Shunt Reactor breaker
:
Bidder to furnish 20 A
20 Rated characteristics for short line fault : Bidder to furnish L90, L75
21a) Rated transient recovery voltage for terminal faults :
Bidder to furnish
Bidder to furnish
364
b) Parameters as per IEC : 4 parameter
22 Rated value of phase making current : As per IEC 125 kA
23Max. interrupting capacity under phase opposition conditions :
12.5 kA 12.5 kA
24Capacity for interrupting in-rush current of transformer :
Bidder to furnish 20A
25
Max. over voltage factor of the circuit breaker when switching off
a) Unloaded transformer : < 2.5 < 2.5b) Loaded transformer : < 2.5 < 2.5c) Open circuited lines : < 2.5 < 2.5d) Synchronous system : < 2.5 < 2.5
26 Details of operation counter : Bidder to furnish 9999
DATA SHEET - 245KV GISDOC. NO. SK-GS-03-1169, R0 3 X 37 MW SAWRA KUDDU
HYDRO ELECTRIC PROJECT
Sr. No.
Description of Technical Particulars Requirement Vendor’s Data
27
No. of auxiliary contacts, their continuous rating and breaking capacities, including those used for circuit breaker operation and interlocking :i) Those closed when breaker is closed : 6 (convertible type) 6(adjustable type)
ii) Those open when breaker is open : 6 (convertible type) 6(adjustable type)
iii) Those adjustable w.r.t. the position of main contacts :
29 Radio interference level at 266 kV (rms) : As per IEC As per IEC
30 Corona extinction voltage : 156 kV(rms) 156 kV(rms)
31Maximum impact loading on foundation during breaker opening and closing operations under fault conditions. :
8000kg (approx) 4200 kg
32 Seismic withstand value (horizontal and vertical)
: 0.35g (H)0.25g (V)
0.5g (H)
: 0.5g (V)
33
Tests to be conducted by the supplier at works(All details to be given)
As per IEC
a) Type tests : Yes(with extra cost)
b) Routine tests : Yes
34 Tests to be conducted at site : Bidder to furnish Yes
35 Overall dimensions (LxBxH), : Bidder to furnish 17745mm(L) x6300mm(W) x 4159mm(H)
36
Weight of breaker complete with operating mechanism, bushing, frame work,
Bidder to furnish
a) with SF6 gas : Approx. 1584 kg/3-phase
b) without SF6 gas : Approx. 1500 kg/3-phase
37Descriptive bulletins and drawings of the circuit breakers giving general details of construction.
Bidder to furnish At the detail design stage
38Out of phase switching capability of the circuit breaker :
12.5kA 12.5 kA
39
Comments regarding the suitability of the circuit breaker for restrike free operation of power transformer carrying full load current. :
Re-strike Free Re-strike Free
40
Guaranteed time difference between the first pole and last pole operation timing. :
3 / 5 ms (approx) Close : 5 msOpen: 3.3 ms
41
Details of the standard accessories to be supplied along with the breaker :
Bidder to furnish At the detail design stage
42No. of the enclosed drg. showing the control scheme of circuit breaker :
Bidder to furnish At the detail design stage
43Details of the provision to be made on GIS to reduce H.V. transients to acceptable values.
:
Bidder to furnish N/A
44
Guaranteed degraded values of B.I.L. switching surges and 50 Hz rated values during the life of equipment.(Test data to support this guarantee to be enclosed by the bidder).
: Bidder to furnish N/A
B) Disconnectors/Grounding SwitchesB-I
1 Manufacturer's name : As per vendor list Hyundai
2 Type & designation : Bidder to furnish 300DSM
3 Rated voltage
DATA SHEET - 245KV GISDOC. NO. SK-GS-03-1169, R0 3 X 37 MW SAWRA KUDDU
HYDRO ELECTRIC PROJECT
Sr. No.Description of Technical Particulars Requirement Vendor’s Data
i) Rated : 220 kV 220 kV
ii)Max. permissible : 245 kV 245 kV
41.2/50 microsecond lightning impulse withstand voltage- Between line terminals and ground : 1050kV(peak) 1050 kV (peak)
- Between terminals with disconnecting switch in open position :
1200 kV 1200 kV
5 Dry one minute power freq withstand voltage- Between line terminals and ground : 460kV (peak) 460 kV(peak)
- Between terminals with disconnecting switch in open position :
530kV 530 kV
6Dry one minute power frequency withstand kV (rms)voltagei) Between line terminals and ground : 460 kV 460 kV
ii) Between terminals with disconnecting switch in open position :
530 kV 530 kV
7 Rated frequency : 50 Hz 50 Hz
8 Rated normal current
Generator Transformer module : 2000 A 3150 A
Line module : 2000 A 3150 A
Bus coupler module : 2000 A 3150 A
9 Rated peak short circuit current : 100 kA 125 kA
10Fault making capacity (For quick acting grounding switch) :
40 kA 50 kA
11 Interruption of loop current : Bidder to furnish 1600A (100times)
12 Rated short time current kA (peak)
i) 1 second : 40 50 kA
ii) 3 second : 40 50 kA
13 Rated peak withstand current : 100 kA 125 kA
14 Rated inductive breaking current : *Bidder to furnish N/A
15TRV caused by breaking/making inductive current :
*Bidder to furnish N/A
16 Rated capacitive breaking current : ≤ 1 Amp 0.5
17TRV caused by breaking/making capacitive current :
As per IEC 280kV
18 Rated insulation level- 1 minute power frequency withstand voltage : 460kV (rms) 460kV (rms)
- 1.2/50 microsecond lightning impulse withstand voltage :
1050 kV (rms) 1050 kV (rms)
- 250/2,500 microsecond switching impulse withstand voltage :
Not applicable N/A
19Maximum temperature rise above ambient at rated current- Contacts, : 65 Deg. C 65
- Hottest part : 75 Deg. C 75
20 Motor operating mechanism
- current During Closing : ≤ 10Amps 1.8 A
- current During opening : ≤ 10 Amps 1.8 A
- Closing time : < 10 sec < 5 sec
- opening time : < 10 sec < 5 sec
- Operating voltage and Range : -15/+10% Un 220V 80-110%
DATA SHEET - 245KV GISDOC. NO. SK-GS-03-1169, R0 3 X 37 MW SAWRA KUDDU
HYDRO ELECTRIC PROJECT
Sr. No.
Description of Technical Particulars Requirement Vendor’s Data
21 Design data- Type of contacts : Multi / Tulip fingers Tulip
- Contact area : Bidder to furnish 3632mm2
- Contact pressure : Bidder to furnish 0.87kgf/mm
- Surface treatment and thickness of surface coating/silver electrolytic plating :
5-30 µm 20-50 µm
- Overtravel Distance after making of contacts : Bidder to furnish 4mm
- Distance Between the contacts in the fully open position :
120-150 mm 101mm
- current density at the Minimum Cross section of switch blade :
2 A/mm2 2 A/mm2
- Speed of Break : Bidder to furnish 0.2m/s
22 Partial discharge level at 1.2 Un /√ 3 : < 5 pico-coulombs < 5 pico-coulombs
23 Corona extinction voltage : Bidder to furnish 156kVrms
24 Radio interference level at 266 kV (rms) : *Bidder to furnish 1000 microvolt
25
Total operating time of disconnector along with its operating mechanism :
10 sec < 5 s
26
Total operating time of disconnector after the command is given :
10 sec < 5 s
27 Auxiliary switches- No. of No and NC contacts : 6 NO + 6 NC 6 NO + 6 NC
- Rated voltage : 220 V DC 220 V DC
- Rated current:
10A make and 0.7Abeak
10 A
- Test voltage : Bidder to furnish 2kV(1min)
28
No. of operations the switch can withstand without any need for inspection
1000/2000 1000/2000
29 Type of mounting : Vertical / horizontal 3 phase gang operation
30 No. of poles per phase : 1 1
31 Safety factor taken into account while : As per IEC As per IEC
32Type and material used for arcing contacts, if provided designing the disconnector. :
Bidder to furnish Cu
33 Weight of 3 pole isolating switch Bidder to furnish- with earthing blades : 150 kg
- without earthing blades : N/A
34Type of interlock between main isolator and earthing switch :
Electrical Electrical
35
Details of the type test reports enclosed and the standards as per which these tests have been carried out :
As per IEC As per IEC
36 Rated maximum time duration of short circuit : 1 to 3 secs 3
37 Rated mechanical terminal load. : *Bidder to furnish At the detail design stage
38
Rated supply voltage of operating devices and auxiliary circuits. :
220V DC 220 V dc
39 Rated pressure of SF6 gas : 7.5 bar(max) 5.5 Bar rel (max)
40
Minimum distance between poles with regard to insulation and forces caused by short-circuit currents. :
during detail engg Single phase in oneenclosure
41Tests to be conducted by the manufacturer at works
As per IEC
i) Type tests : Yes (with extra cost)
DATA SHEET - 245KV GISDOC. NO. SK-GS-03-1169, R0 3 X 37 MW SAWRA KUDDU
HYDRO ELECTRIC PROJECT
Sr. No.
Description of Technical Particulars Requirement Vendor’s Data
ii) Routine tests : Yes
42 Tests to be conducted at site : Acc. To Bid Yes
B- II Safety Grounding Switches
1 Manufacturer's name : As per vendor list Hyundai
2 Type / designation : Bidder to furnish 300 EAP
3 Maximum permissible operating voltage : 245 kV 245 kV
4 Maximum make and carry current for one sec. : 100 kA (peak) 125 kA (peak)
5 Rated inductive breaking current : Bidder to furnish N/A
6TRV caused by breaking/making inductive current :
Bidder to furnish N/A
7 Rated capacitive breaking current : Bidder to furnish N/A
8TRV caused by breaking/making capacitive current :
Bidder to furnish N/A
9 Details of motor operating mechanism provided
: Electric Electric
10 Closing current : < 10 A 5.2 A
11 Closing time : < 10 secs < 5 s
12 Opening current : < 10 A 5.2 A
13 Opening time : < 10 secs < 5 s
14 Operating voltage range & rated voltage : 220 V DC 220 V dc
15 Ground connection insulation : 5 kV 5 kV
16 Type of contacts : Multi finger / Tulip Tulip
17 Over travel distance : Bidder to furnish 48 mm
18 Distance of fully open contacts : Bidder to furnish 130 mm
19 Size of the removable link : Bidder to furnish 6t x 40mm
20 Speed of make : Bidder to furnish 0.2 mm/s
21 Partial discharge level at 1.2 Un /√ 3 : < 5 pico-coulomb < 5 pico-coulomb
20 Radio Interference voltage at 266 kV (rms) : Bidder to furnish 1000 microvolt
21 Corona extinction voltage : Bidder to furnish 156 kV (rms)
22 Total weight : Bidder to furnish Approx. 600kg/3-phase
23 Magnetization curves of CT cores : Bidder to furnish Refer to specification.
24 Mounting details : Bidder to furnish Bushing type
25Overall dimensions (drawings with literature to be enclosed) :
Bidder to furnish Approx. 630mm(L)x630mm(W)x 650mm(H)
26Tests proposed to be conducted by the manufacturer at works :
As per standard
i) Type tests Yes(with extra cost)
ii) Routine tests Yes
27 Tests proposed to be conducted at site. : Acc. To bid Yes
D) VOLTAGE TRANSFORMERS
1 Name of manufacturer : As per vendor list Nissin
2 Type designation : Bidder to furnish Inductive
Wdg - I / II / III
3 Rated primary voltage (kV) : 220/√3 kV 220/√3 kV
4Rated secondary voltage (V)
:
110/√3 V - 110/√3 V- 110/√3 V
110/√3 V - 110/√3 V- 110/√3 V
5 Rated output per phase (VA) : As per the specification requirement
Refer to SLD
6 Rated burden (VA):
Refer to SLD
7 Rated frequency (Hz) : 50 50
8 Standard values of rated voltage factor : Bidder to furnish 1.2(cont.)/1.5(30s)
9 Limits of temperature rise : Bidder to furnish As per IEC
10 One-minute power frequency withstand voltage : 460 kV(rms) 460 kV(rms)
111.2/50 microsecond lightning impulse withstand voltage :
1050kV(peak) 1050kV(peak)
12 Total weight and dimensions : During detail engg Approx. 800kg/3phase
13Limits of voltage error and phase displacement in % :
As per IECError angle : 0.2/3P
Voltage error : Refer to SLD
Accuracy class at rated burden : Refer to SLD
Voltage factor and rated time : Refer to no.8
14Details of the tests to be conducted by the manufacturer at works
As per IEC
i) Type tests : Yes
ii) Routine tests : Yes
15 Tests to be conducted at site. : As per IEC Yes
DATA SHEET - 245KV GISDOC. NO. SK-GS-03-1169, R0 3 X 37 MW SAWRA KUDDU
HYDRO ELECTRIC PROJECT
Sr. No.Description of Technical Particulars Requirement Vendor’s Data
16Detailed drawing with literature to be enclosed with bid :
As per IEC Submitted after award
E) SF6 GAS Breaker Bus Bar
1 Name of manufacturer : As per vendor list Ashai or Solvey
2 Electrical properties(please give details) : Bidder to furnish As per IEC
3 Compatibility with material used in switchgear : Yes As per IEC
4Impurities in percentage(please mention details of impurities) :
Bidder to furnish As per IEC
5Size of the cylinder in which gas is proposed to be supplied :
Bidder to furnish 600 kg/bottle
6 Condensation temperature : Bidder to furnish As per IEC
7 Physical properties(please give details) : As per IEC As per IEC
8Certification that gas meets the requirement of all the properties :
As per IEC As per IEC60376
9Tests to be conducted by the manufacturer at works :
As per IEC No
10Tests proposed to be conducted at site to detect and limit the moisture content in gas compartments :
Bidder to furnish No
11 Other details : : Bidder to furnish- Normal pressure : Bar CB: 7 / Others:5
- Maximum pressure : Bar CB: 7.5 / Others:5.5
- Normal Operating density : Kg/m3 CB: 52.51 / Others: 38.3
- Maximum gas density : bar CB: 8 / Others: 6
- Minimum pressure To maintain dielectric insulation for 245kV :
CB: 6.5 / Others:4.5
- Maximum leakage rate per year at Normal pressure in percentage :
0.5 % per year 0.5 % per year
- Maximum Permissible moisture content by weight :
Bidder to furnish -5℃ dew point
- Permissible variation in ambient temperature : Bidder to furnish ±5mm
- Details of gas filters : Bidder to furnish Absorbent
- Effective life of filters : Bidder to furnish 30 years
- Test pressure for gas system : Bidder to furnish CB: 6.5 / Others:4.5
- Constituents of gas in percent of ' weight' and volume of SF6, air, CH4, H2 :
As per IEC As per IEC60376
12 Alarm levels : Bidder to furnish- First Alarm level for circuit breakers : 6.5 bar
- Second Alarm level for circuit breakers : 6.2 bar
- First Alarm level for all other components : 4.7 bar
- Second Alarm level for all other components : 4.5 bar
13
Gas Monitoring Devices Details of the sketches enclosed showing the type and location of gas density, gas pressure, gas moisture content and other fault monitoring devices to be supplied.
:
Bidder to furnish Please refer to gas scheme drawing
14) Pressure Relief Devices : Bidder to furnish- Rupturing pressure : CB: 15 bar / other: 10 bar
-Time to rupture : Approx. 60ms
-Details of the sketches enclosed showing the location and quantity of pressure relief devices used :
Please refer to gas scheme drawing
DATA SHEET - 245KV GISDOC. NO. SK-GS-03-1169, R0 3 X 37 MW SAWRA KUDDU
HYDRO ELECTRIC PROJECT
Sr. No.Description of Technical Particulars Requirement Vendor’s Data
F) SURGE ARRESTORS
1 Manufacturer : As per vendor list Toshiba
2 Type designation : Bidder to furnish RVLUF-198KY
3 Class of arrestor : Bidder to furnish 3
4 Rated Voltage of Arrestor : 179 kV 198kV
5 Rated Frequency : 50 Hz 50Hz
6 Maximum continuous operating voltage(MCOV)
: 156 kV 160kV
7 Nominal discharge current : 10 kA 10kA
8Maximum discharge current (8/20 microsecond wave) :
20 kA20 kA
9 Long duration discharge class : 3 3
10 Maximum 0.5 microsecond discharge voltage : Bidder to furnish 500kV at 10kA(Front time 1us)
11Residual voltage at 10kA (8/20 microsecond current wave) :
Bidder to furnish463kV
12Residual voltage at 20kA, 8/20 microsecond current wave :
Bidder to furnish495kV
13 Maximum switching surge sparkover voltage : Bidder to furnish N/A