Customization: | Available |
---|---|
Breaking Capacity: | High Voltage Circuit Breakers |
Operation: | Electric Type |
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LW36-72.5/1250A outdoor self energyhigh-pressure sulfur hexafluoride circuit breaker is a three-phase ac 50/60 Hz outdoor high voltage electric transmission and transformation equipment, By Opening or closing the rated current and fault current and conversion circuit to realizing the protection,control and operation of the power transmission and transformation system. The product can open or close brake and operate the auto reclosing very fast and realize the linkage of three pole electric.
The circuit breaker using the latest design principle, And it has much feature such as simple construction,small volume material consumption, It is necessary to the operation of the energy is small and high reliability,easy to install,low noise and so on. It is developed a new generation of high-pressure sulfur hexafluoride circuit breakerby ourselves.
2 Use of environmental conditions
2.1Ambient temperature: -40°C--+ 50°C
2.2Wind pressure:≤700 pa
2.3Altitude:≤3000m
2.4Seismic intensity:≤9degrees
2.5Air polluted degree: level
3 Nominal parameter
No. |
Item |
Unit |
Data |
|
1 |
Rated voltage |
KV |
72.5 |
|
2 |
Rated current |
A |
3150 |
|
3 |
Rated frequency |
HZ |
50/60Hz |
|
4 |
First pole to clear factor |
1.5 |
||
5 |
Rated short circuit breaking current |
KA |
31.5 |
|
6 |
Rated short-circuit current (peak) |
KA |
100 |
|
7 |
Rated short-circuit withstand current |
KA |
40 |
|
8 |
Rated power frequency withstand voltage(1min) |
Phase to earth |
KV |
K·230 |
Phase to phase |
K·(230+70) |
|||
9 |
Rated lightning impulse withstand voltage |
Phase to earth |
KV |
K·550 |
Phase to phase |
K·(550+103) |
|||
10 |
Rated peak withstand current |
KA |
100 |
|
11 |
Rated out of step current |
KA |
10 |
|
12 |
Near fault current |
KA |
90%1K |
|
13 |
Electrical life of rated short circuit breaking current |
times |
20 |
|
14 |
Rated short circuit duration |
s |
4 |
|
15 |
Rated line charging close current |
A |
50 |
|
16 |
Rated operation sequence |
O-0.3s-CO-180s-CO |
||
17 |
Main circuit resistance |
μΩ |
≤35 |
|
18 |
Rated SF6 gas pressure |
MPa |
0.5 |
|
19 |
SF6 gas leakage rate |
ppm |
≤0.5 |
|
20 |
Moisture content of SF6 gas (V/V) |
≤150 |
||
21 |
Mechanical life |
times |
6000 |
|
22 |
Electric distance |
Phase to earth |
mm |
3906/3150 |
Phase to phase |
3906/3150 |
|||
23 |
Each filled with SF6 gas quality |
kg |
6 |
|
24 |
Quality of each circuit breaker |
kg |
1200 |