ZW20-12 Outdoor HV Vacuum Circuit Breaker （ZW20-12F、ZW20-12、ZW20-12G）outdoor high-voltage intelligent demarcation vacuum circuit breaker is suitable for protection and control of substations, industrial and mining enterprises and urban and rural distribution networks, especially suitable for places with frequent operations and urban automatic distribution networks. This product is matched with the controller, which can meet the requirements of the distribution automation system, and can reliably and effectively complete the traditional recloser function. It adopts a mature box-type sealing structure, filled with SF6 gas, and has good sealing performance, so that it is not affected by the external environment, and is a maintenance-free product. Its spring operating mechanism adopts direct-acting chain main drive and multi-stage tripping system, which has high reliability and is the best product for column-mounted circuit breakers.
Model Description
Z:Vacuum circuit breaker
W:Outdoor
20:Design Number
12:Rated voltage:12kV
▢:F:intelligeht type/blank(mannual type)/G:disconnector type
▢: Rated current:400A、630A、1000A、1250A
▢: Rated short-circuit breaking current:20kA、25kA
Working Environment：
● The altitude does not exceed 3000m;
● Ambient air temperature: -40C ~+40C; daily temperature difference: daily temperature change 25°C;
● The wind speed is not more than 35m/s;
● No flammable, explosion hazard, strong chemical corrosive substances (such as various acids, alkalis or thick smoke, etc.) and violent vibration places.
Main Technical Parameters：
Electric Parameter | ||
Model | ZW20-12F、ZW20-12、ZW20-12G | |
Parameter | Unit | Value |
Rated voltage | kV | 12 |
Rated frequency | Hz | 50 |
Rated current | A | 630、1000、1250 |
Rated short-circuit breaking current | kA | 20、25 |
Rated peak withstand current (peak) | kA | 50、 63 |
Rated short-time withstand current (4s) | kA | 20、25 |
Rated short-circuit making current (peak value) | kA | 50、63 |
Mechanical life | times | 10000 |
Rated current breaking times | times | 10000 |
Rated short-circuit breaking current breaking times | times | 30 |
Main mechanical parameters | ||
Parameter | unit | Value |
Power frequency withstand voltage (1min): phase-to-phase, ground/fracture | kV | 42/48 |
Lightning impulse withstand voltage (peak value) phase-to-phase, ground/fracture | kV | 75/85 |
Secondary circuit 1min power frequency withstand voltage | kV | 2 |
Net weight | kg | ≤140（with disconnector ≤170） |
Contact Spacing | mm | 9±0.5 |
Victory Overtravel | mm | 3±0.5 |
Opening speed | m/s | 1.2+0.2 |
closing speed | m/s | 0.6±0.2 |
Contact closing bounce time | ms | ≤2 |
Phase center distance | mm | 135±1.5 |
External live air insulation distance | mm | 240±2 |
External creepage ratio | cm/kV | 3.8 |
Three-phase opening is not periodic | ms | ≤2 |
Conductive circuit resistance of each phase | Q | ≤150（with disconnector ≤200） |
Closing time | ms | ≤45 |
Opening time | ms | ≤45 |
Isolation fracture distance | mm | ≥190 |
The contact knife just-close position is skewed | mm | ≤2 |
Manual opening and closing operating torque | N.m | ≤150 |
Rated power of energy storage motor | w | > 40 |
Rated voltage of energy storage motor | V | AC220 |
Rated closing operating voltage | V | AC220 |
Maximum/minimum closing operating voltage | V | AC264/143 |
Rated opening operating voltage | V | AC220 |
Maximum/minimum opening operating voltage | V | AC264/143 |
Maximum/minimum motor voltage | V | AC242/187 |
SF6 gas rated pressure (gauge pressure) | MPa | “0” |
Structure and Mounting Dimensions
Product Real Shot
FAQ:
Q1: Is it possible to visit your factory?
A1:Our company is located in Zhejiang, China, near Shanghai. It is very convenient to visit us. And all clients from all over the world are highly welcome to us.
Q2:Can I order a ZW20-12 Outdoor HV Vacuum Circuit Breaker (ZW20-12F、ZW20-12、ZW20-12G )sample?
A2:Yes, we accept any sample orders
Q3: About price?
A3:The price is negotiable. It can be changed according to your quantity. When you are making an inquiry, please let us know the quantity you want.
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