XGN15A-12 switch counter can easily meet the various requirements of distribution automation, small and compact size. Can provide the best solution for medium pressure system.
Its advantages are: it has a compact structure and strong expansion ability. Sensor technology as well as most
The use of new protective relays can still work well even in hospitals, airports and other places where the use conditions are demanding.
Description of the operating environment and model
■ Altitude no more than 1000m: (if altitude > 1000m, please indicate plateau type)
■ Ambient air temperature: upper limit +40°C, lower limit -25°C:
If the ambient temperature exceeds, please indicate when ordering:
■ The daily average relative humidity of the air is not more than 95%, the monthly average is not more than 90%:
■ The surrounding air should be free from corrosive or flammable gases, water vapor and other obvious pollution:
■ No frequent violent vibration.
Technical parameters for assembly adjustment of vacuum arc chamber in load switch (circuit breaker)
|
name |
unit |
Load switching parameter |
Circuit breaker parameter |
|
clearance between open contacts |
mm |
8.5±0.5 |
10±1 |
|
overtravel |
mm |
3±1 |
3±0.5 |
|
Average closing speed |
m/s |
0.6±0.2 |
0.6±0.2 |
|
Average opening speed (up to 6mm) |
m/s |
1.0±0.2 |
0.9±1.4 |
|
The three phase contacts are divided and the closing time is different |
ms |
≤2 |
≤2 |
|
Contact closing bounce time |
ms |
≤2 |
≤2 |
|
Distance between charged bodies and relative ground |
mm |
≥125 |
≥125 |
|
Main loop resistance |
μ Q |
≤70 |
630A≤50 1250A≤45 |
|
contact pressure |
N |
800±100 |
800±100 |
Technical data of load switches and circuit breakers
|
serial number |
project |
unit |
load switch |
composite apparatus |
breaker |
|
1 |
nominal voltage |
kV |
12 |
12 |
12 |
|
2 |
rated frequency |
HZ |
50 |
50 |
50 |
|
3 |
Rated active load breaking current |
A |
630 |
200 |
1250 |
|
4 |
alternating current |
A |
630 |
|
1250 |
|
5 |
Rated closed-loop breaking current |
A |
630 |
|
|
|
6 |
5% rated active load breaking current |
A |
31.5 |
|
|
|
7 |
alternating current |
A |
3150 |
|
|
|
8 |
rated cable-charging breaking current |
A |
10 |
|
|
|
9 |
Rated no-load transformer breaking capacity |
KV/A |
1600 |
1600 |
|
|
10 |
1min power frequency withstand voltage, vacuum fracture interphase, relative/isolated fracture |
KV |
42/49 |
42/49 |
42/49 |
|
11 |
Lightning impulse withstand voltage; Vacuum fracture interphase, relative/isolated fracture |
KV |
75/85 |
75/85 |
75/85 |
|
12 |
Rated short-time withstand current (heat stable) |
KA/s |
20/4 |
|
20/4 |
|
13 |
Rated peak withstand current (heat stable) |
kA |
50 |
|
50 |
|
14 |
Rated opening and closing current |
kA |
50 |
|
50 |
|
15 |
mechanical life |
次 |
10000 |
10000 |
10000 |
|
16 |
Allowable wear thickness of arc chamber contact |
Mm |
2 |
2 |
3 |
|
17 |
Manual torque |
Nm |
≤80 |
≤80 |
≤100 |
