AC Hv Vacuum Circuit Breaker

Product description

ZW7-40.5 series outdoor AC high voltage vacuum circuit breaker(hereafter referred to as circuit breaker) is an outdoor power equipment with rated voltage 40.5kV.Adopt spring operation device and it can undertake tasks like opening operation and closing operation nearby or remotely.Moreover it can be used to open or close load current,overload current and short-circuit current.It was applicable at transformer substations,power plants,rural power distribution automation grids and occasions where frequent operations are needed. It can be divided into ordinary type and plateau type according to their environment.

Structure feature

1.The arc-extinguish chamber is on the upper part and the mechanism is on the lower part. This structure is convenient for debug.

2.Complex insulating structure using air and organic material; Compact dimension and small weight.

3.Vacuum arc-extinguish chamber of Cutler-Hammer Company (USA) and domestic ZMD are both applicable for the VCB. Both two kinds of chambers extinguish arc by vertical magnetic field and featuring with low cut-off and good on-off capability with asymmetry.

4.Simple spring operation mechanism is free from maintenance within 10000 times of operations.

5.Lead-screw propeller, easy and stable operation and good self-locking capability.

Service environment:
a) Air temperature: Maximum temperature: +40ºC; Minimum temperature:-25ºC
b) Humidity: Monthly average humidity 95%; Daily average humidity 90%. 
c) Altitude above sea level: Maximum installation altitude: 2500m 
d) Ambient air not apparently polluted by corrosive and flammable gas, vapor etc. 
e) No frequent violent shake

Following information is required for order

1.For VCB

Full type name,rated current,rated short-circuit breaking current.

Rated voltage of operating circuit

The switchgear with or without earth switch

Name and quantity of spare parts and components

Other special requirents for VCB.

2.Isolation switch

Full type name and rated current

3.For fuse

Full type,name and quantity.

Type and quantity of fuse

Is enquipped with surge arresters and discharge counter

For special requiremtne,please consult with manufacturer.