Outdoor Vacuum Circuuit Breaker on column




 ZW32-12/24 Series outdoor column high-voltage vacuum circuit breaker is rated voltage 12 / 24kV, three-phase AC 50Hz outdoor high voltage switchgear equipment, mainly used for breaking, closing load current and short circuit current of the power system for substations, industrial and mining enterprises and urban and rural distribution network for the protection and control, especially for frequent operation place and urban and rural distribution network automation.

The product is the latest international design and epoxy encapsulated silicone rubber insulation APG technology and precision machining technology, technical compliance with IEC56 standard,maintenance-free, small size, light weight, intelligence, high reliability and appearance, etc., the technical level of the leading domestic position.

ZW32-12/24 The main circuit breaker integrated by a solid letters column, current transformers, spring mechanism and base composition. Spring operating mechanism and pole fixed to the base, integrated solid seal pole, current transformer, sealing structure between the spring mechanism to adapt to the outdoor environment. It is compact shape, nice, concise structure, easy installation, and installation without having to adjust to meet the interrupter open distance and overtravel requirements.

The circuit breaker is also reserved for auxiliary switch contacts, fully meet the needs of different users. In order to meet customer needs, but also the addition of a clear fracture isolation switch isolation, have reliable mechanical interlock between the circuit breaker and, when not needed, isolation switch disassembly simple and convenient.


Technical parameters of the circuit breaker

1Rated voltagekV1224
2Rated frequencyHz50
3Rated currentA6301250
4Rated short circuit breaking currentkA2025
5Rated peak withstand current (peak)kA5063
6Rated short time withstand current / durationkA/s20/425/4
7Rated short-circuit current (peak)kA5063
8Rated operating sequence O-0.3s-CO-180s-CO
9Mechanical lifetimeCircuit Breaker 10000
Disconnector 20000
10Rated current breaking timestime10000
11Rated short-circuit breaking current breaking timestime30
12Power frequency withstand voltage (1min):( wet) phase-to-ground (dry), phases, / fracturekV34/42/4950/65/79
13Lightning impulse withstand voltage (peak:phase-to-ground (dry), phases, / fracturekV75/85125/145
14Secondary circuit 1min power frequency withstand voltageV2000
15weightkg=< 100=< 150

Mechanical parameters

1Open contactsmm9 ± 112 ± 1
2Contact Overtravelmm2 (0 / +1)3(0/+1)
3Opening speedm / s1.2±0.21.4±0.3
4Closing speedm / s0.65±0.20.7±0.2
5Contact closing bounce timems=< 3
6White center distancemm280±2340±2380±2
7Three-phase closing different periodms=< 2
8Breaker loop resistanceµ Ω< 80
9Closing timems25 – 60
10Opening timems18 – 45
11Energy storage motor rated powerW4070