HXGN-12 high voltage incoming line 12kv 630A ring main unit

1:Type: HXGN ring main unit 2.up to 36kv 3.ISO9001,ISO14001,IEC 4 type test report 5 outdoor or indoor

HXGN-12 ring net vacuum circuit breaker ring main unit 

           the 12kv  ring main unit is suitable for the distribution system of mining and industrial enterprises, residential quarters, high-rise buildings, school and park as the power supply unit and terminal distribution equipments of the indoor 10KV, 50Hz AC three-phase.  12kv  ring main unit  can connect and break the rated load current and the no-load current of the transformer, and  12kv  ring main unit can also connect or break the capacitor current of the overhead lines, cable lines or the capacitor bank.         

          Load switch-fuse combination cabinets can break the rated short-circuit current at one time. And 12kv  ring main unit  used to protect, receive and control the power in the distribution equipments.  12kv  ring main unit is mainly equipped with FN5, FN7 switches, FN12 variable pressure differential switch, FZN121, FZN25 vacuum switch.

3. Technical parameters of ring main unit

Serial No	Item		Unit	Technical parameters
1	Rated voltage		KV	12
2	Rated current		A	630
3	Rated short time withstand current 4s		KA	20
4	Rated withstand current (peak)		KA	50
5	Rated short time withstand current 2s of grounding switch		KA	20
6	Rated withstand current (peak) of grounding switch		KA	50
7	Rated short circuit making current (peak) of grounding switch		KA	50
8	1min power frequency withstand voltage	Phase-phase, phase-earth, vacuum fracture	KV	42
		Isolation fracture		48
9	Protection degree			IP2X

HXGN-12 high voltage incoming line 12kv 630A ring main unit