品牌:
4.2. Feeder cabinet РУ-600Л-УХЛ4
Manufacturer: Zhejiang Changchun Electrical Appliance Co., Ltd
The purpose of the feeder cabinet is to supply power to the contact network on the cable line. The main circuit is equipped with a DC fast circuit breaker, a bypass bus isolation switch and a ground isolation switch. The repair work is carried out with a separate ground isolation switch.
The cabinet has a bypass isolation switch connected to the backup bus, and the fast switch and the backup bus isolation switch are "interlocked".
In the case of short-time overload, the fast circuit breaker and controller have the following protection functions:
Current rate of change protection
Current incremental protection
Current quick break protection
Current delay protection
Thermal overload protection
Current integral protection
Backflow protection
Overvoltage protection
Line test
Reclosing
And other functions.
Basic technical parameters of fast circuit breaker DS16-25/18:
Same as 4.1.
Basic technical parameters of spare isolation switch HD18-20/18:
Manufacturer: Zhejiang Changchun Electrical Appliance Co., Ltd
Rated voltage: 1800V
Rated current: 2000A
Power frequency withstand voltage: 5.5kV 1min
Short-time withstand current capability:
50kA/71kA(T=250ms)
Mechanical life: 20000 times, 120 times/hour
Basic technical parameters of grounding isolation switch HD18-10/18:
Rated voltage: 1800V
Rated current: 1000A
Power frequency withstand voltage: 5.5kV 1min
Short-time withstand current capability:
50kA/71kA(T=250ms)
Mechanical life: 20000 times, 120 times/hour
