| Customization: | Available |
|---|---|
| Breaking Capacity: | High Voltage Circuit Breakers |
| Operation: | Energy-storage Type |
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330KV SF6 CIRCUIT BREAKERS WITH SPRING OPERATING
MECHANISM
|
S/NO. |
PARAMETER DESCRIPTION |
UNIT |
PERFORMANCE GUARANTEE |
|
330KV SF6 CB |
|||
|
1 |
Scope: Design, manufacture, testing, supply & installation. |
|
Yes + Supervision by accredited personnel |
|
2 Design & Construction |
|
|
|
|
2.1 |
Type designation |
|
|
|
2.2 |
Reference Standard |
|
IEC 62271-100 IEC 62271-1 |
|
2.3 |
No. of poles/circuit breakers |
|
3 |
|
2.4 |
Type of control mechanism |
|
Motor operated spring |
|
2.4.1 |
Mechanical class |
|
M2 |
|
2.5 |
Protection level of electrical cubicle |
|
IP54 |
|
2.6 |
Protection level of operating mechanism |
|
IP55 |
|
2.7 |
Type of and colour insulator |
|
Porcelain, brown |
|
2.8 |
Insulating gas |
|
SF6 |
|
2.9 |
Rated absolute pressure at 20oC |
|
|
|
2.10 |
Relative leakage rate |
%/yr |
0,5% |
|
2.11 |
Circuit breaker class |
|
Outdoor |
|
2.12 |
Support structures supplied |
|
Yes |
|
3 Service Conditions |
|
|
|
|
3.1 |
Altitude of installation |
m |
1300 |
|
3.2 |
Operating ambient temperature |
oC |
-1 to +40 |
|
3.3 |
Relative humidity |
% |
80 |
|
3.4 |
Pollution levels |
mm/kV |
25 |
|
4 Rated Characteristics |
|
|
|
|
4.1 |
Rated voltage |
kV |
330 |
|
4.2 |
Maximum service voltage |
kV |
362 |
|
4.3 |
Rated frequency |
Hz |
50 |
|
4.4 |
Rated continuous current |
A |
4000 |
|
4.5 |
Rated peak withstand current |
kApk |
125 |
|
4.6 |
Rated short time withstand current |
kA |
50 |
|
4.7 |
Rated duration of short circuit |
s |
3 |
|
4.8 |
One min. power frequency withstand voltage: |
|
|
|
|
- phase to earth |
kV |
450 |
|
- Across open contacts |
kV |
520 |
|
|
4.9 |
Rated lightning impulse withstand voltage: |
|
|
|
|
- phase to earth |
kVpk |
1175 |
|
- across open contacts |
kVpk |
1175 (+205) |
|
|
4.10 |
Rated switching impulse withstand voltage: |
|
|
|
|
- phase to earth |
kVpk |
950 |
|
- across open contacts |
kVpk |
800 (+295) |
|
|
5. Breaking and Making Characteristics |
|
|
|
|
5.1 |
Rated short circuit breaking current |
kA |
50 |
|
5.2 |
First pole to clear factor |
|
1.3 |
|
5.3 |
DC component (% of AC component) |
|
50 |
|
5.4 |
Peak value of rated short circuit making current |
kApk |
125 |
|
5.5 |
Rated breaking current for short line faults |
|
As per IEC Standard |
|
5.6 |
Rated out of phase breaking current |
Id (kA) |
12,5 |
|
5.7 |
Rated overvoltage factor for unloaded transformers |
|
2.5 |
|
5.8 |
Rated line charging breaking current |
A |
255 |
|
5.9 |
Rated cable charging breaking current |
|
355 |
|
6. Operating Times |
|
|
|
|
6.1 |
Rated opening time - from opening coil energizing to separation of main contacts |
ms |
24 |
|
6.2 |
Rated breaking time - from opening coil energizing to arc extinction |
ms |
40 |
|
6.3 |
Rated closing time - from closing coil energizing to main contact making |
ms |
110 |
|
6.4 |
Rated operating sequence |
|
O-0.3s-CO-15s-CO |
|
6.5 |
Rated operating sequence without motor supply |
|
O-CO |
|
7. Low Voltage Specification |
|
|
|
|
7.1 |
Motor voltage |
V |
220, DC |
|
7.2 |
Circuit motor protection |
|
MCB |
|
7.3 |
Motor voltage min. range |
% |
85 |
|
7.4 |
Motor voltage max. range |
V |
220, DC |
|
7.5 |
Opening voltage min. range |
% |
65 |
|
7.6 |
Opening voltage max. range |
% |
110 |
|
7.7 |
Closing voltage min. range |
% |
75 |
|
7.8 |
Closing voltage max. range |
% |
110 |
|
7.9 |
Lighting and heating circuit voltage |
V |
220, AC |
|
7.10 |
Local electrical control with two push button |
|
Yes |
|
7.11 |
Anti-pumping relay |
|
Yes |
|
7.12 |
Local/remote selector switch |
|
Yes |
|
7.13 |
Number of trip coils |
|
2 |
|
7.14 |
Provision for trip coil supervision |
|
Yes |
|
7.15 |
Pole discrepancy feature |
|
Yes |
|
7.16 |
Signalling contacts for spring position |
|
Yes, 1NO |
|
7.17 |
Number of available auxiliary NO contacts |
|
8 |
|
7.18 |
Number of available NC auxiliary contacts |
|
8 |
|
7.19 |
Position indicator - O/I |
|
Yes |
|
7.20 |
Indicator for spring status |
|
Yes |
|
7.21 |
Gas for first filling plus 30% |
|
Yes |
|
7.22 |
SF6 filling equipment supplied |
|
Yes |
|
7.23 |
SF6 gas leakage detector supplied |
|
Yes |
|
8. Documents and Drawings with Bid |
|
|
|
|
8.1 |
Circuit breaker outline drawing |
|
Yes |
|
8.2 |
Foundation detail drawings |
|
Yes |
|
8.3 |
Quality assurance certification |
|
Yes |
|
8.4 |
Typical low voltage elementary diagram |
|
Yes |
|
9. Test Reports with Bid |
|
|
|
|
9.1 |
Dielectric test |
|
Yes |
|
9.2 |
Temperature rise test |
|
Yes |
|
9.3 |
Short time withstand current test |
|
Yes |
|
9.4 |
Mechanical endurance test |
|
Class M2 - 10,000 operations |
|
9.5 |
Capacitive current breaking test |
|
Yes |
|
9.6 |
Operating times test |
|
Yes |
|
9.7 |
Main contact resistance test |
|
Yes |
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