The 24KV breaker switch unit is comprised of three poles, the operating mechanism, and the operating mechanism housing. The sequence of the poles is A -B – C or 1 – 2 - 3 (sequence left to right when viewed from the lower terminal side of the recloser switch unit. 

Each 24kv vacuum circuit breaker by GOPOWER is embedded in a solid-insulated pole made of weather-proof cyclo aliphatic epoxy resin. This enables a small design as well as resistance against environmental effects. 

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Breaker principle and design of 24KV Vacuum Circuit Breaker

ZW32 series 24KV circuit recloser are used in distribution systems. 24kv vacuum circuit breakes are used to make and break normal and fault currents. Breakers are fully equipped with sensors and a controller to provide a means of protection and control. 

In case of a line fault, breakers can break and make currents several times, thus avoiding longer network interruptions due to temporary faults. The manufacture, design, and testing of the vacuum recloser is based on current standards IEC 62271-111：2019

Technical Parameters of 24KV Vacuum Circuit Breaker

Products Type ZW32-24

Maximum System Voltage 24kV

Rated Continuous Current 630A

Rated Frequency 50/60Hz

Short Time Withstand Current 20kA/1sec

Mainly Active Load Current 630A

Number of Load-break Operations 30

Short-circuit Making Current (peak) 50kA

Number of Making Operations 5 times

Cable Charging Current 25A

Line Charging Current 1.5A

Closed Loop Circuit Current 630A

Transformer Magnetizing Current 22A

Wet Condition-10sec Ph- Ph-Eth, Across Interrupters 50kV

DryCondition-1min，Ph- Ph, Phase to Earth 65kV

Dry Condition - 1 min AcrossInterrupter 79kV

Phase to Phase, Phase to Earth 125kV

Across Interrupter 145kV

Internal Arc Test 20kA /0.1 sec

Arc Extinction Medium vacuum

Insulation Medium vacuum

Creepage Distance (Silicon) 960mm

Dry arcing distance 200mm≥

IP Level 67

Closing/Opening Time ＜1sec

Mechanical Operations (Guaranteed) 10000times

Operating Temperature (*Manual Type) -25～+70℃

Gopower as a electric power equipment company, has participated in the construction of an intelligent control project of transmission and distribution in the world-renowned Olympic Project together with Huayi Electric Gas.