ZW20-12 Outdoor HV Vacuum Circuit Breaker

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	time	10000
Rated current breaking times	time	10000
Rated short-circuit breaking current breaking times	time	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 ≤2
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

Cooperation Process

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.

http://www.luban-electric.com/