Shenzhen Dong Sheng Yuan Electrical Equipment Co., Ltd.
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---Outdoor high-voltage fast permanent magnet vacuum circuit breaker is an outdoor distribution vacuum circuit breaker with a rated voltage of 12kV and three-phase AC 50Hz.
---Outdoor high-voltage vacuum circuit breaker is a new generation of outdoor column vacuum circuit breaker developed to meet the needs of the smart grid.
--- It is used to switch loads of different properties and frequent operations, and can break short-circuit current many times.
---It can be used as the 10kV side outgoing line of the main transformer of the substation and the switch on the column of the distribution network.
---It is the preferred equipment to realize the intellectual, automation, and miniaturization of the distribution network.
|
Item |
Unit |
Parameter |
|
Rated voltage |
kV |
12 |
|
Rated current |
A |
630/1250 |
|
Rated frequency |
Hz |
50 |
|
Rated lightning impulse withstand voltage(peak) |
kV |
ground 75/fracture 85 |
|
Rated short-time power frequency withstand voltage(1min) |
kV |
wet test 34/ dry test 42/ fracture 48 |
|
Rated short-circuit breaking current |
kA |
25 |
|
Rated short-circuit breaking current times |
Times |
30 |
|
Rated short-time withstand current |
kV |
25 |
|
Rated short circuit duration |
s |
4 |
|
Rated peak withstand current |
kA |
50 |
|
Rated short-circuit making current |
kA |
50 |
|
Power frequency withstand voltage of secondary circuit(1min) |
kV |
2 |
|
Rated operating sequence |
|
O-0.3s-CO-180S-CO |
|
Mechanical life |
Times |
30000 |
1. Ambient air temperature: upper limit + 70 ºC, lower limit - 40 ºC
2. Air relative humidity: the daily average value shall not be greater than 95%, and the monthly average value shall not be greater than 90%;
3. Altitude: < 2000m;
4. Wind pressure: no more than 700pa (equivalent to wind speed of 34m / s)
5. Pollution level: Class V (specific creepage distance ≥ 31mm / kV)
6. Icing thickness: ≤ 10mm;
7. Seismic intensity: ≤ 8 degrees;
8. Installation site: there shall be no fire, explosion hazard, serious pollution, chemical corrosion, or violent vibration.
1. protection: it is equipped with three-stage voltage blocking directional overcurrent protection, inverse time overcurrent protection, zero sequence protection, acceleration protection, overload protection, low-frequency load shedding, low-voltage splitting, and three-phase triple reclosing;
2. Measurement: three-phase voltage, current, power factor, frequency, etc.
3. control function: automatic reclosing, local control, and remote control can be set
4. Communication function: standard RS232, RS485, or Ethernet interface, supporting optical fiber, distribution network carrier, wireless, twisted pair, and other communication modes, GPRS short message or communication, etc.
5. Other functions: local display, parameter setting, fault recording and alarm, etc.