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Circuit breaker

Outdoor High Voltage Vacuum Circuit Breaker

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Proposed Price

$2455.00 - $2678.00/Pieces | 1  Pieces (Minimum Order Quantity)

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Product Details

Type ZW20-12 outdoor high-voltage ac vacuum circuit breaker is an outdoor high-voltage switchgear with rated voltage of 12kv and three-phase ac of 50Hz, mainly used for breaking and closing the load current, overload current and short circuit current of the power system.This product is suitable for the protection and control of substations, industrial and mining enterprises, urban and rural networks, especially for the frequent places of operation and the automatic distribution network of urban networks. It can be equipped with FTU remote terminal and also used for intelligent circuit breakers, boundary switches, sectionalizers and recalizers.It meets the requirements of the new primary and secondary integration of state grid, and is suitable for the construction and transformation of urban grid, rural grid, wind farm and mine power equipment.
Superior overall structure;Flexible and convenient operation;Excellent insulation performance;Reliable sealing performance;Variable than any adjustable, PT secondary output relay;Flexible control interface.


Technical parameters

1Rated voltagekv12
2Rated currentA630
3Rated frequencyHz50
4Rated peak withstand currentkA50/63
5Rated short time withstand currentkA20/25
6Rated short circuit breaking currentkA20/25
7Rated short circuit closing current (peak)kA50/63
8Rated short circuit durations4
9RatedOne minute power frequency withstand voltage (effective value) (wet and dry phase, ground/fracturekv(34)42/48
Insulation(Rated lightning) medium strike voltage (peak) phase, ground/fracturekv75/85
HorizontalOne-minute power frequency withstand voltage of the secondary circuitkv2
10Rated operating sequence
11Rated times of short circuit current breakingtime30
12Mechanical lifetime10000

Mechanical characteristic parameter

1Clearance between open contactsmm9±1
2Contact overtravelmm3±1
3Break-brake timems18~45
4Closing timems20-60
5Contact closing bounce timems≤2
6Three - phase separation, switching out of phasems≤2
7Average breaking speedm/s1.2±0.2
8Average closing speedm/s0.6±0.2
9Main circuit resistance (excluding cables)μQ≤120


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