HV vacuum load switch fuse combination appliance

General:

The combination is characterized by large breaking capacity, high safety and stability, long electrical life, support for frequent operation, less maintenance, etc. It has an apparent isolating gap, an earthing switch with making capability, an electric spring actuator and remote control capability.

Service Environment

• Ambient temperature: -40℃~+40℃(below 35℃ within 24 hours)

• Relative humidity:≤95% (daily average) or ≤90% (monthly average)

• Altitude:≤1000m

Key Feature

• The type of load switch and combined electrical apparatus are mainly composed of frame, isolation switch, vacuum switch tube, ground switch, spring operating mechanism and so on.

• The product has the advantages of compact structure, small size, long life, strong closing and breaking ability, easy operation and maintenance.

• The vacuum switch is equipped with a spring operating mechanism, using a motor (with manual) spring energy storage, and the closing method has two kinds of electromagnet closing and manual opening and closing.

• Interlock (mechanical interlock) between isolation switch, vacuum switch and ground switch to prevent misoperation.

Technical Data

• Name			Unit	Data
  Rated voltage			kV	12
  Rated frequency			Hz	50
  Maximum rated current of the fuse			A	125
  Rated transfer current			A	3150
  Rated short-circuit breaking current(expected effective value)			kV	31.5
  Rated short-circuic making current (expected peak value)			kV	80
  1min power-frequency withstand voltage		Vacuum gap, interpole, pole-to-ground	kV	42
  		Isolating gap	kV	48
  Lightning impulse withstand voltage	Vacuum gap, interpole, pole-to-ground		kV	75
  	Isolating gap		kV	85
  Output energy of the fuse striker			J	2-5

Drawing