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Compressed air load switch
FK(R)N12-12 压气式负荷开关

主要技术参数 /The main technical parameters

项目 Project 单位 Unit FKN12-12 FKRN12-12

额定电压 Rated voltage kV 12
额定频率 Rated frequency Hz 50
额定电流 Rated current A 630 100
雷电冲击耐受电压 Lightning impulse withstand voltage kV 对地及相间 75、隔离断 85/Ground and phase 75, isolation 85
1min 工频耐受电压 1min power frequency withstand voltage kV 对地及相间 42、隔离断 48/Earth and phase 42. Isolation 48
额定热稳定电流 Rated thermal stability current kA 20(4S)
额定动稳定电流 Rated dynamic current kA 50
额定关合电流 ( 峰值 )Rated closing current (peak) kA 50 50
额定短路开断电流 ( 予期值 ) kA 31.5
Rated short-circuit breaking current (predicted value)
临界开断电流时最大 12.tMax A2S 按溶断器特征曲线 According to the characteristic curve of the
Maximum critical current breaking current 12.tMax breaker
最小开断电流 Minimum breaking current kA 按熔断器特征曲线 According to the characteristic curve of the
breaker
额定转移电流 Rated transfer current kA 1.5
最大开断电流 ( 参考值 ) kA 1.8
Maximum breaking current (reference value)
开断空载变压器容量 kVA 1250
Breaking the capacity of the no-load transformer
额定电缆充电电流 Rated cable charging current A 10
额定有功负载电流开断次数 次 /Times >100
Rated active load current breaking times
撞击器触以负荷开关分闸时间 S >0.06
The impactor touches the load switch opening time
接地开关热稳定电流 Grounding switch thermal stability current kA 20(2S)
接地开关热稳定电流 ( 峰值 ) kA 50
Grounding switch thermal stability current (peak)
电动机操作电源电压 Motor operating power supply voltage V AC DC 110、220

外形及安装尺寸 (mm)

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