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Description
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GENERAL FEATURES
- Enforcement of dielectric withstand capability by enclosing circuit breaker
in a stainless steel tank filled with SF6 gas.
- Compact and light weight design.
- Maintenance free over 10 years or 10,000 operationsby adoption of reliable
single moving parts with bi-stable magnetic actuator.
- Verification of interruption capability at the gas pressure 0 kg/cm2
- Vacuum interruption with no hazardous arcing products.
- Pressure relief device for internal arc withstand.
- Easy access to the inner part by removal of bolted assembly of the tank
cover with EPR o-ring
RATINGS
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Rated maximum line to line voltage
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kVrms
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15
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27
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Continuous current
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A
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630/1200/2000
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630/1200/2000
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Frequency
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Hz
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50/60
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50/60
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Short circuit interrupting current
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kV rms
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25
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25
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Short time withstand current. 3sec
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kV rms
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25
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25
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Making current
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kA peak
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65
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65
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Cable charging interrupting current
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A
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31.5
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31.5
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Transformer magnetizing interrupting current
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A
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20
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20
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Power frequency withstand voltage. 1min
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㎸
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60
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60
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Impulse withstand voltage(1.2x50μs)
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kV crest
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110
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150
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Rated interrupting time
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cycles
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5
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5
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Rated operating duty
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O-0.3s-CO-3min-CO
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O-0.3s-CO-3min-CO
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Nominal SF6 gas pressure at 20°C
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kg/cm2
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0.5
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0.5
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Ambient temperature
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°C
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-25 ∼ 45
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-25 ∼ 45
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Maximum operational capability
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No
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10,000
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10,000
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