Fixed Metal Enclosed Hv Ring

HXGN-12 type fixed metal-enclosed HV ring main unit is applicable for power system that is available in AC 50Hz, rated working voltage 12KV, rated working current 630A and below, it is used as an indoor distribution device of ring network and terminal power supply in the factory, workshop, residential area, tall building, school, park and so on. This product operates the load switch with the help of electromagnetic and electric spring mechanism, and the earth switch and isolating switch by means of manual operation mechanism.
Basic technical parameters
Rated working voltage/max working voltagei 10kV/12kV
Rated frequencyi 50Hz
Rated working current of main busi 400Aa 630Aa 1250A
Rated current (functional unit)i 400Aa 630Aa 1250A
Rated short-time withstand current (functional unit)i 12.5kA/4sa 20kA/2s
Rated short-time withstand current of earth circuiti 12.5kA/4sa 20kA/2s
Rated peak withstand currenti 31.5kAa 50kA
Rated peak withstand current of earth circuiti 31.5kAa 50kA