40.5kV Movable Insulating Sleeve Vacuum Circuit Breaker
General
GPVN-40.5kV indoor vacuum circuit breaker is a product designed and produced by our company and Xi’an High-voltage Electric Apparatus Institute. The VCB is of rated voltage 40.5kV, three-phase and AC 50/60Hz. It applies to mining firms, power house and substation acting as protection and control electric apparatus. It is also applicable in occasions with frequent operation.
Conditions of use
Ambient temperature: upper limit +45°C, lower limit -25°C
The altitude does not exceed 1000m (Standard); can up to 4500m for special ordering
Atmospheric environment: the surrounding air is not seriously polluted by corrosive or flammable gases and dust
Daily average value of relative humidity: ≤95%. Monthly average value of relative humidity: ≤90%
Earthquake intensity≤8 degree
Product features
The arc-extinguish chamber is on the upper part and the mechanism is on the lower part. This structure is convenient for debug.
Complex insulating structure using air and organic material; Compact dimension and small weight.
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.
Simple spring operation mechanism is free from maintenance within 10000 times of operations.
Lead-screw propeller, easy and stable operation and good self-locking capability.
