| SPECIFICATION OF 245KV DISCONTECTOR |
| 3.1.2 DISCONNECTORS(ISOLATORS) |
|
| Item No |
Description |
Particulars |
OFFERED |
| 245kV |
245KV |
| 1 |
Manufacturer |
|
|
| 1.1 |
Name |
Pars Switch Co. |
HEMG |
| 1.2 |
Country of origin |
IRAN |
CHINA |
| 2 |
Type/Designation |
NSA245/3150D DS,DS+ES |
GW4-252KV |
| 2.2 |
State whether end posts,vertical,centre break,etc |
H.C.B. |
CENTRA BREAK ,2 COLUMNS |
| 2.3 |
Three phase or single phase |
3Phase |
3 PHASES |
| 2.4 |
Earthing switch incorporated |
NVA245 |
JW10-252KV |
| 3 |
Type of operating mechanism |
BCM-F |
SCRJ2 |
| 4 |
Power at normal voltage required for: |
|
|
| 4.1 |
Operating coil W |
------ |
(--) |
| 4.2 |
Motor (where provided) W |
170 |
370W |
| 5 |
Operating characteristics: |
|
|
| 5.1 |
Total time from initiation of opening operation to s isolator in fully open position |
3 up to 5 |
10S |
| 5.2 |
Time from contact separation to extinction of s capacitive arc |
3 up to 5 |
10S |
| 5.3 |
Total time from initiation of opening operation to time s when isolator gap can withstand phase voltage |
3 up to 5 |
10S |
| 6 |
Rated voltage kV |
245 |
245KV |
| 7 |
Rated normal voltage: a) for coupler bay A |
3150 |
3150A |
| b) for other bays A |
3150 |
3150A |
| 8 |
Maximum short time current for(1 |
|
|
| second/3 |
|
|
| second ) |
|
|
| 8.1 |
Disconnector kA rms |
50(1S) |
50KA(1S) |
| 8.2 |
Earth switch kA rms |
50(1S) |
50KA(1S) |
| 9 |
Total mass of three phase isolator complete Kg |
1100(shipping) |
2665(SHIPPING) |
| 10 |
Type pf earthing switch (where provided) |
NVA |
JW10-252KV |
| 11 |
Type of operating mechanism for earthing switch |
BCM-F |
SCRJ3 |
| 12 |
Basic insulation level at site altitude (IEC 694) |
|
|
| 12.1 |
Lighting impulse withstand level (1.2/50μs wave) positive and negtive |
|
|
| 12.1.1 |
To earth and between phases in the closed position kVp |
1050 |
1050KV |
| 12.1.2 |
Between phases in the open position kVp |
1050 |
1050KV |
| |
|
|
|
| Item No |
Description |
Particulars |
OFFERED |
| 245kV |
245KV |
| 12.1.3 |
Across open gap |
|
|
| 12.1.3.1 |
Lightning impulse kVp |
1200 |
1200KV |
| 12.1.3.2 |
Lighnting impulse/Bias kVp+ |
1200 |
1200KV |
| kV ACP |
|
|
| 12.2 |
Switching surge withstand level (250/2500μs wave) |
|
|
| at site altitude - positive and negtive dry/wet |
|
|
| 12.2.1 |
To earth and between phases in closed position kVp |
N.A. |
N.A |
| 12.2.2 |
Between phases in open position kVp |
N.A. |
N.A |
| 12.2.3 |
Across open gap |
|
|
| 12.2.3.1 |
Switching surge kVp |
N.A. |
N.A |
| 12.2.3.2 |
Switching surge/Bias kVp+ |
N.A. |
N.A |
| kV ACP |
|
|
| 12.3 |
Power frequency withstand voltage at site altitude dry/wet |
|
|
| 12.3.1 |
To earth and between phases in closed position - 1 kV minute |
460 |
460KV |
| 12.3.2 |
To earth and between phases in open position - 1 kV minute |
460 |
460KV |
| 12.3.3 |
Across open gap -1minute kV |
520 |
520KV |
| 13 |
In air clearances: |
|
|
| 13.1 |
Phase to earth aecing distance mm |
please see DIM. Prints |
2100MM |
| 13.2 |
Phase to phase distance in open position mm |
please see DIM. Prints |
2550MM |
| 13.3 |
Distance between terminals of open isalator mm |
please see DIM. Prints |
2200MM |
| 14 |
Support insulators |
|
|
| 14.1 |
Manufaturer |
China |
CHINA |
| 14.2 |
Type, designation of unit |
Brown glazed porcelain |
BROWN GLASED PROCELAIN |
| 14.3 |
Minimum creepage to earth (to IEC 815) mm |
7500 |
7500MM |
| 15 |
Protected creepage distance mm |
3204 |
3205MM |
| 16 |
Radio influence voltage level measured at 1.1 times μV Us/√3 at 1MHz |
2500 |
2500MM |
| 17 |
Maximum capacitive current that can be interrupted A by the disconnector |
|
1A |
| Item No |
Description |
Particulars |
OFFERED |
| 245kV |
245KV |
| 18 |
Operating mechanism for disconnecting switch: |
|
|
| 18.1 |
Type |
BCM-F(MOTOR&HAND) |
SCRJ2 |
| 18.2 |
Operating voltage - rated/ min for : |
|
|
| (a) operating coil (if any) V |
----- |
|
| (b)Motor V |
220 VDC |
220VDC |
| 19 |
Opening time- from the moment when the coil is energised until the complete extinction of arc between opened contacts( under system highest voltage condition) |
3 up to 5 |
10S |
| 20 |
Operation time - from the moment when the coil is energised until the disconnectoon of operating motor in limit open disconnected positioning. |
3 up to 5 |
10S |
| 21 |
Operating mechanism for earthing switch |
|
|
| (a) type |
BCM-F(MOTOR&HAND) |
SCRJ3 |
| (b) operating voltage- rated/min/max |
220 VDC |
220VDC |
| (c)rated power |
170 |
370W |
| 22 |
Total weight of complete disconnecting switch ( one or three poles). |
1100(shipping) |
2665KG(SHIPPING) |
| 23 |
Type test certificate details |
|
|
| (a)testing station |
CESI - ITALY |
KEMA |
| (b)certificate numbers |
A6020791 |
TIC3010-03 |
| 3.1.3 |
EARTHING SWITCHES |
|
|
| Item No |
Description |
Particulars |
|
| 245kV |
245KV |
| 1 |
Manufacturer |
|
|
| 1.1 |
Name |
Pars Switch Co. |
RGHY |
| 1.2 |
Country of origin |
IRAN |
CHINA |
| 2 |
Type / Designation |
NVA245(associated with earthing switch )/outdoor |
JW10-252 |
| 3 |
Type of contacts |
PIN |
PIN |
| 4 |
Materials of contact surface |
Sliver Plated Copper |
SILVER PLATED COPPER |
| 5 |
Rated short time current |
|
|
| (a) For 1 sec KA(rms) |
50 |
50KA |
| (b) For 2 sec KA(rms) |
---- |
|
| 6 |
Rated peak short current KA(peak) |
125 |
125KA |
| 7 |
Gap between poles Mm |
Please see DIM.Prints |
2050MM |
| 8 |
One minute power frequency withstand kV voltage cross open gap |
Please see type test reports |
460KV |
| 9 |
Lightning impulse withstand voltage |
Please see type test reports |
1050KV |
| 10 |
Operating mechanism |
|
|
| (a)Type |
MOTOR&HAND(BCM-F) |
SCRJ3 |
| (b)Operating voltage - rated/min V |
220 VDC |
220VDC |
| (c)Rated power W |
170 |
370W |
| 11 |
Main dimensions Mm |
Please see DIM.Prints |
SEE THE DRAWING |
| 12 |
Total weight Kg |
Please see DIM.Prints |
SEE THE DRAWING |
| 13 |
Type test certificate details |
|
|
| (a) Testing station/authority |
CESI-ITALY |
KEMA |
| (b)Certificate number |
A6020791 |
TIC3010-03 |
| (c)Applied standards |
IEC62271-102 |
IEC62271-102 |
| 14 |
Creepage distance mm |
7595 |
7595MM |
Audited Supplier 
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