China LW35-126 IEC standard outdoor high voltage SF6 gas insulated circuit breaker is suitable for AC 50Hz and 126kV voltage class with altitude no higher than 3000m. It is used for cutting rated current, fault current or circuit exchange, realizing control and protection of the power system. This product adopts SF6 as arc-distinguishing and insulation media, and uses international most advanced auto arc-distinquishing technoloay, equipped with new type spring operating mechanism, it has advantages of long service life, operation friendly, light noise, high reliability and competitive price.
Features:
Rated Voltage: 126kV
Rated Current: 2500A/3150A
Rated Frequency: 50Hz
Rated Short Circuit Breaking Current: 31.5kV/40kV
Rated Short Circuit Making Current(peak): 80kV/100kV
Rated Short Time Withstand Voltage: 31.5kV/40kV
Rated Short Circuit Standing Time: 4s
Operation Altitude: ＜3000m
Service environment:
- Ambient temperature: -40 ℃ ~ +50 ℃.
- Daily average ambient air relative humidity ≤ 95%, on average ≤ 90%;
- Wind pressure: less than 700pa.
- Altitude: less than 3000m.
- Earthquake intensity: not more than 9 degrees.
- Air Contamination: Ⅲ grade.
Technical data
|
No. |
Description |
Technical parameters |
|||
| 1 |
Rated voltage, kV |
72.5 |
123 |
145 |
245 |
|
2 |
Rated frequency, Hz |
50/60 |
|||
|
3 |
Rated current, A |
1600~4000 |
3150~4000 |
||
|
4 |
1min Power frequency withstand voltage |
140 |
185/230 |
230/275 |
360/395/460 |
|
5 |
Lightning impulse withstand voltage |
325 |
450/550 |
550/650 |
850/950/1050 |
|
6 |
Rated short-circuit breaking current, kA |
25~40 |
40~63 |
||
|
7 |
Rated short circuit breaking current (peak), kA |
63~100 |
100~157.5 |
||
|
8 |
Rated short duration, s |
3 |
3 |
3 |
3 |
|
9 |
Rated out-of-phase breaking current |
10 |
10 |
10 |
10 |
|
10 |
Rated cable(line) charging breaking current |
10 |
31.5 |
50 |
125 |
|
11 |
Rated gas pressure, Mpa |
0.4 |
0.5 |
0.5 |
0.6 |
|
12 |
Operation sequence |
O-0.3s-CO-180s-CO |
|||
|
13 |
SF6 gas leakage rate (per year) |
≤1% |
|||
|
14 |
First of several genes |
1.5 |
1.55 |
1.5 |
1.3 |
|
15 |
Main loop resistance, μΩ |
≤40 |
≤45 |
≤45 |
≤50 |
|
16 |
Heater voltage |
AC220 |
|||
|
17 |
Control circuit and signal circuit voltage |
DC110, DC220, DC230 |
|||
|
18 |
Motor voltage |
DC110, DC220, DC230 |
|||
Main technical parameters (single phase)
|
No. |
Description |
Technical parameters |
|||
|
1 |
Rated voltage, kV |
72.5 |
123 |
145 |
245 |
|
2 |
Rated frequency, Hz |
50/60 |
|||
|
3 |
Rated current, A |
1600~4000 |
3150~4000 |
||
|
4 |
1min Power frequency withstand voltage |
140 |
185/230 |
230/275 |
360/395/460 |
|
5 |
Lightning impulse withstand voltage |
325 |
450/550 |
550/650 |
850/950/1050 |
|
6 |
Rated short-circuit breaking current, kA |
25~40 |
40~63 |
||
|
7 |
Rated short circuit breaking current (peak), kA |
63~100 |
100~157.5 |
||
|
8 |
Rated short duration, s |
3 |
3 |
3 |
3 |
|
9 |
Rated out-of-phase breaking current |
10 |
10 |
10 |
10 |
|
10 |
Rated cable(line) charging breaking current |
10 |
31.5 |
50 |
125 |
|
11 |
Rated gas pressure, Mpa |
0.4 |
0.5 |
0.5 |
0.6 |
|
12 |
Operation sequence |
O-0.3s-CO-180s-CO |
|||
|
13 |
SF6 gas leakage rate (per year) |
≤1% |
|||
|
14 |
First of several genes |
1.5 |
1.55 |
1.5 |
1.3 |
|
15 |
Main loop resistance, μΩ |
≤40 |
≤45 |
≤45 |
≤50 |
|
16 |
Heater voltage |
AC220 |
|||
|
17 |
Control circuit and signal circuit voltage |
DC110, DC220, DC230 |
|||
|
18 |
Motor voltage |
DC110, DC220, DC230 |
|||
Note: For short circuit breaking current & rated current is optional by clients.
Structure
LW Series self-energy sulfur hexafluoride circuit breaker uses the principle of self-interrupter, greatly reducing the pressure cylinder diameter and weight, reduced operating power, making equipped with spring operating mechanism to become a reality.
Three single pole circuit breaker and each of the three mounted on the spring mechanism consisting of three stents, can be either unipolar operation, and can achieve three-pole electrical linkage. Spring mechanism mounted on the side of the bracket, electrical control system is placed inside the body. The upper part of the body is a single-pole circuit breaker interrupter single fracture, the middle pillar porcelain sets, the lower part is used for sealing, opening spring and buffer.
- Molecule sieve
- Porcelain insulator
- Nozzle
- Pressure cylinder
- Valve disc
- Piston
- Moving contact pedestal
- Pull rod
- Moving contact finger
- Main contact
- Moving arc contact
- Fixed arc contact
- Fixed contact finger
- Fixed contact pedestal
Q: Can we get a sample for reference?
A: Yes, as long as the goods are conventional type, and you will be charged sample cost plus related shipping cost. Once you place an order to us, we can return or deduct the sample cost to you.
Q: How to solve the quality problems after sales?
A: Take photos of the quality problems and send to us for our checking and confirming, we will make a satisfied solution for you within 3 days.
Q: What is the lead time?
A: The lead time depends on the quantities ordered, generally within 25-35days upon the receipt of advance payment.
Q: What is your terms of payment ?
A: We accept West Union, T/T, irrevocable L/C at sight. Prefer T/T 30% deposit before production, the balance against copy of B/L.
Q: Can you print our brand on the product?
A: Yes, of course, we also do OEM to print client’s brand on the product
