Application: For control and protection of 126, 145kV power system.
Standards: IEC 62271-100
Main parameters:
- Rated voltage: 126, 145kV.
- Rated current: 3150, 4000A.
- Rated short-circuit breaking current: 40kA.
Features:
- Reliable insulation performances.
- Utilization of spring operating mechanism.
- Low noise, easy or free of maintenance.
- Easy installation and adjustment.
|
No |
Item |
Unit |
Technical parameters |
|
|
1 |
Rated voltage |
KV |
126 |
|
|
2 |
Rated frequency |
Hz |
50 |
|
|
3 |
Rated current |
A |
3150 |
|
|
4 |
Rated short circuit breaking current |
short circuit current |
kA |
40 |
|
DC component |
— |
40% |
||
|
5 |
Rated short circuit duration |
s |
4 |
|
|
6 |
Rated short time withstand current |
kA |
40 |
|
|
7 |
Rated short-circuit current ( peak ) |
kA |
100 |
|
|
8 |
Rated peak withstand current |
100 |
||
|
9 |
Rated power frequency withstand voltage 1min ( RMS ) |
phase to ground, phase to phase |
kV |
230 |
|
Between fracture |
265 |
|||
|
10 |
Rated lightning impulse withstand voltage (peak ) |
phase to ground, phase to phase |
550 |
|
|
Between fracture |
630 |
|||
|
11 |
5min zero gauge pressure (ms ) |
Between fracture, phase to ground |
95 |
|
|
12 |
Rated breaking current of step |
kA |
Ie×25% |
|
|
13 |
District fault breaking current |
|
Ie×90%,Ie×75% |
|
|
14 |
Rated line charging breaking current |
A |
50 |
|
|
15 |
Rated sequence of operations |
— |
O-0.3s-CO-180s-CO |
|
|
16 |
First pole opening factor |
— |
1.5 |
|
|
17 |
Closing time |
ms |
≤135 |
|
|
18 |
Opening time |
≤32 |
||
|
19 |
Breaking time |
≤60 |
||
|
20 |
time of Close and Open |
60 |
||
|
21 |
opening same period |
2 |
||
|
22 |
closing same period |
3 |
||
|
23 |
Rated SF6 gas pressure (20ºC) |
Mpa |
0.5 |
|
|
24 |
SF6 gas leakage rate |
— |
≤0.5% |
|
|
25 |
Moisture content of gas |
ppm(v/v) |
≤150 |
|
|
26 |
level of radio interference |
μV |
≤2500 |
|
|
27 |
mechanical life |
times |
6000 |
|
|
28 |
weight |
kg |
1400 |
|
|
29 |
each filled with SF6 gas weight |
6 |
||
|
30 |
per pole main circuit resistance |
μΩ |
40 |
|
Working Conditions:
- Ambient temperature: -40ºC ~ +40ºC
- Daily temperature variation: 25
- Pressure: ≤ 700PA
- Altitude: ≤ 3000m
- Seismic intensity: ≤ 8 degrees
- Air Contamination: III grade
- Sunshine: 0.1 W/cm
- Relative humidity: Daily average value 95%
- Monthly average value 90%
- Wind velocity: 34 m/s
- Seismic: Horizontal acceleration is 0.250g
- Vertical acceleration is 0.125g
- Pollution level: 25mm/kV), 31mm/kV
- Thickness of ice covering: 10 mm (the wind velocity 15m/s)
- Protection degree: IP5XW
Note: Customized products are available.
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