ZW20-12 Type Outdoor HV Vacuum Circuit Breaker

General Description

ZW 20 outdoor high-voltage alternating-current vacuum circuit breaker is a new on-pole switchgear of our vacuum circuit breaker series products. Its rated voltage is 12 kV. It applies to places with such voltage level, including overhead lines, industrial and mining enterprises, power stations, substations, etc. Under its normal operating conditions and specified technical parameters, it can satisfy the protection requirements of systems connected with the grid in service. It has good performance in short-circuit making and breaking. It is characterized by automatic re-making, stable operation and long electric life.

Reference standard
GB/T11022-1999 Common technical requirements of high voltage switch equipment and control equipment
GB311.2-2002 Insulation coordination operation manual of high voltage power transmission and transformation equipment
GB/T4109-2008Insulation casing of AC Voltage more than 1000v
GB2706 AC High Voltage Electrical Equipment Dynamic and Thermal Stability Test Method
GB3309-1989 Mechanical Test Of High Voltage Switch Equipment at Normal Temperature
GB/T 8905-1996 Gas Manage And Testing Manu al Of SF6 Electric Equipment
GB1206-2006 current Transformer

Applying ambient conditions
a. Altitude above sea level:no more than 2000m:Pollution level:IV level.
b. Ambient temperature:-40ºC~+40ºC,and average temperature in 24hr should be no more than 25ºC
c. Wind speed is no more than 35m/s:earthquake intensity:no more than 8 degrees.
d. It should be installed in the places without inflammable,explosive,chemical corrosion.

Conditions of Use

Sea level:≤1000m(if increase the altitude, it will improve 12% every increase 1000m, rated insulator average level increase 12%)；
Ambient air temperature:+40℃,***-35℃；
Wind pressure:not over 700Pa(equals to wind speed 34m/s)；
Amplitude:without frequent convulsion；
Air pollute degree:Ⅲ grades；
Daily different temperature:not over 25℃

Note: Due to continuous product improvement, the dimensions provided in this sample are for reference only. If necessary, our company can design and produce according to user requirements. Please contact the company in time.

·Order instructions:

1. The customer needs provide main parameters of the transformer (input and output voltage, capacity, loss, etc.)

2. Other customer requirements