Breaking Capacity: | High Voltage Circuit Breakers |
---|---|
Operation: | Electric Type |
Speed: | High-Speed Circuit Breaker |
Arc-extinguishing Medium: | SF6 |
Installation: | Fixed |
Structure: | ACB |
Customization: |
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Product Introduction
LW36-126 SF6 Circuit Breaker outdoor sf6 circuit breaker 126kv using SF6 gas as arc extinguishing and insulating medium, using the most advanced self-energy arc extinguishing technology in the world, equipped with a new type of spring operating mechanism, it has the characteristics of long electrical life, low operating power, low noise and high reliability. Simple structure, small size, long period of no maintenance, can completely replace the same type of imported products in the current process of power equipment becoming oil-free and large-capacity.
LW36-126 SF6 Circuit Breaker outdoor sf6 circuit breaker 126kv is a new generation of self-energy high voltage SF6 circuit breaker. The product is suitable for closing, cutting off load current and short-circuit fault current, controlling, protecting power equipment and tie lines of AC 50Hz, 126kV power system in areas below 2500 meters above sea level. The circuit breaker uses SF6 gas (a mixture of SF6 and CF4 in alpine regions) as the insulation and arc extinguishing medium, adopts the principle of self-energy arc extinguishing, and is equipped with a spring operating mechanism.
The Model Description Of LW36-126
L :Sulfur Hexafluoride Circuit Breaker
W:Outdoor
36 :Design Number
126:Rated voltage:126kV
Rated current:3150A
Rated short-circuit breaking current:40kA
Installation method: side-mounted, middle-mounted
Ambient air temperature: upper limit +40C, lower limit -30C; ;
Altitude: ≤2000m (if the altitude needs to be increased, the rated insulation level should be increased accordingly);
Wind pressure: no more than 700Pa (equivalent to wind speed of 34m/s);
Amplitude: earthquake intensity 8 degrees;
Contamination level: Class I;
Maximum daily temperature difference: no more than 25C.
Serial number |
Parameter |
Unit |
Value |
|
1 |
Rated voltage |
kV |
126 |
|
2 |
Rated power frequency withstand voltage (1mim) |
to the ground |
kV |
K·230 |
between fractures |
kV |
K·265 |
||
3 |
Rated lightning impulse withstand voltage |
to the ground |
kV |
K.550 |
between fractures |
kV |
K.630 |
||
4 |
Power frequency withstand voltage at zero gauge pressure of SF6 gas |
kV |
K.95 |
|
5 |
Rated frequency |
Hz |
50 |
|
6 |
Rated current |
A |
3150 |
|
7 |
first open pole coefficient |
|
1.5 |
|
8 |
Rated short-circuit breaking current |
|
40 |
|
9 |
Rated short-circuit making current (peak value) |
kA |
100 |
|
10 |
Rated short-time withstand current |
kA |
40 |
|
11 |
Rated peak withstand current |
kA |
100 |
|
12 |
Rated short circuit duration |
S |
4 |
|
13 |
Rated out-of-step breaking current |
kA |
10 |
|
14 |
Near zone fault breaking current |
kA |
90%lk, 75%lk |
|
15 |
Rated line charging switching current |
A |
31.5 |
|
16 |
Nominal Operation Sequence |
|
0-0.3s-CO-180s-CO |
|
17 |
Main circuit resistance |
µΩ |
≤40 |
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