GW4 Disconnector

KEY WORDS:High pressure vacuum switch



GW4  3-phase switch disconnctor.
Rated current:630A 
Rated voltage:40.5KV 
ISO9001:2008 certificate

Main features:
1.Complete in specifications,high technical parameters is high, wide range. Additional, wide scope    of application , it can be used for high layout. Installation way is flexible. 
2.Perfect sealing Performance and  Resistant To Rust 
3.Simple, reliable mechanical rotating way. 
4.Perfect dustproof, waterproof, and anti-corrosion ability. 
5.Full set of steel galvanized foundation frame and the vertical and horizontal  dwang for option.

Technical data:

Technical Specifications   GW4-40.5 GW4-72.5 GW4-126
Rated voltage kV   40.5 72.5 126
The rated current A   1250, 2000
Disconnector Rated peak withstand current kA 100
Rated short-time withstand current (RMS)kA 40
Rated short circuit duration s 4
Grounding switch Rated peak withstand current kA 100
Rated short-time withstand current (RMS)kA 40
Rated short circuit duration s 4
Rated short-time power
 frequency withstand voltage (RMS) kV
to earth 95 160 230
across isolating point 118 200 230+70
Rated lightning impulse withstand voltage (peak) kV to earth 185 350 550
across isolating point 215 410 550+100
minimum clearance in 1 min power
 frequency withstand voltage when
 ground blade closing to live part of disconnector
  53 94 164
switching ability of earthing switch inductance current electromagnetic inductance current (current/voltage) 50/0.5(A type), 100/6(B type)
Static inductance current (current/voltage) 0.4/3(A type), 5/6(B type)
switching times 10 10 10
rated terminal static mechanic load N longitudinal level 1000 1000 1000, 1250
Horizontal level 750 750 750
Vertical force 1000 1000 1000
switching capacitance current A   2 2 2
switching inductance current A   1 1 1
switching busbar for current 
transfer A (busbar transfer voltage 100V)
  400V, 2500A, 100 times
Radio interference level   less than 500 μV
Mechanical life   3000 3000 3000
single pole weight (kg)   240 300 350
note: All applied in an altitude of 2000m

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