12KV Vacuum Load Break Switch

Type: FZN25
FZRN25-12D / T630-20 indoor AC high voltage load-breaking switch is three-phase AC 50Hz and rated voltage 12kV indoor installation, which is suitable for using in industry and mining situations, enterprise substations and transformer substations for protection and controlling the electrical facility, by using OFF and ON load current, closed loop current, idling transformers and cable charging current. It has manual and electrical motor operating mechanism that is advantageous to realize three remote controls requirement of power system.FZRN25-12D / T-31.5 indoor AC high voltage vacuum load switch-the fuse combination electric appliance is three-phase AC 50Hz, rated voltage 12kV indoor installation, which is suitable for load control and short-circuit protection. It is equipped with the earthing switch that may withstand short-circuit current. FZN25-12D / FZRN25-12D load switch and combination electric appliance is suitable for load control and to short-circuit the protection, in three-phase ring net, the terminal power supply urban districts, power distribution stations and the industry consumers. The combined electric appliance has more reliable economical protection functions than circuit breaker electrical appliance equipment, especially for the ring net, double radiation power supply unit and box type transformer substation.

Item		Data
		FZN25-12D/T630-20	FZRN25-12D/T125-31.5
Rated voltage kV		12
Rated frequency Hz		50
Rated current A		630	125
Rated insulation level	1 min power frequency withstand voltage kV	Explosion chamber fracture 30;
		To earth, phase to phase 42; Isolation fracture 48;
	Lightning impulse withstand voltage(peak value) kV	To earth, phase to phase 75; Isolation fracture 85;
Rated dynamic current (peak value) kA		50
4 seconds heat-stable current kA		20
The rated active load breaking current A		630
Rated closed loop breaking current A		630
Rated cable charge breaking current A		10
Rated breaking idling transformer capacity kVA		1600
Rated transfer current A			2000
Fuse model			SDLAJ-12 SFLAJ-12
Ram output energy J			2-5(middle grade)
Rated short-circuit making electric current KA		50
Earthing switch rated peak withstand current KA		50
Earthing switch 2s thermal stable current KA		20
Auxiliary loop retad voltage		220 110
Mechanical life		10000