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Zhejiang Chakai Electrical Co., Ltd

China Manufacturer with main products: Vacuum Circuit Breaker, Indoor High-Voltage Vacuum load switch, High-Voltage operation mechanism, Cable tapping box, Complete set switch...

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SF6 circuit breaker

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Specifications

Technical parameter

Item
Unit
Data
Rated Voltage
KV
40.5
rated insulation leve1
thunder impulse withstand voltage(peak vaule)
KV
185/215
industrial frequency withstand voltaged(1 min)
KV
95
rated current
A
1600
2000
Mechanical life-span
Times
3000
SF6 air'rated pressure (gage pressure when 20)
MPA
0.45
shutting pressure(gage pressure when 20)
MPA
0.45
the lowest use environment temperature
C
-30
rated short-circuit break current
KA
25
31.5
rated short-ciruit close current(peak value)
KA
63
80
rated little withstand current (heat stablized current)
KA
25
31.5
rated peak vaule withstand current (stabilized current)
KA
63
80
rated breaking-step dropout current
KA
63
80
rated short follow current
S
4
time of closing brake(under rated operation voltage)
S
≤0.1
time of breking brake(under rated operation voltage)
S
≤0.07
rated operation order
ms
off-0.3Son and off-180S-an and off
rated on-offone condenser bank'current
A
400
the accumulated dropout times under rated short dropout current
Times
15
10
annual air-leakage ratio
%years
≤1
water content of SF6 air when 20)
PPM(V)
≤150
rated operation volt of CT14spring operation structure
V
~220v
volt of closing coilopening coil
V
AC:220
DC:110 220
energy-store electric machine'volt
V
AC:220
DC:220
weight of SF6 air
KG
8
weight of circuit breaker(including operation structure)
KG
1400

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