FZN12-10D/630 Indoor vacuum load switchDetailed product description：

FZN12-10D/630-50 indoor AC high voltage load switch (hereinafter referred to as FN12-10D load switch) is a three-phase high voltage switchgear with a rated voltage of 10KV and a rated frequency of 50Hz. It is used for switching load current, closed-loop current, no-load transformer and cable charging current, and short-circuit current. Load switches equipped with grounding switches can withstand short-circuit currents.

FZN12-10 (R) D/100-31.5 AC high voltage load switch fuse combination (referred to as FN12-10 (R) D combination) is an indoor high voltage switchgear that combines FN12-10D load switch with S □ LAJ-12 (XRNT □ -10) high voltage current limiting fuse. It can reliably disconnect any current up to the short-circuit current; The load switch disconnects the working current, the fuse disconnects the short-circuit current, and jointly disconnects any overcurrent between the working current and the full short-circuit current. At the same time, the fuse uses its impactor to open the load switch.

Main technical parameters of FZN12-10D/630 indoor vacuum load switch

serial number	project	unit	numerical value
			FN12-10D/630	FN12-10(R)D/630
one	rated voltage	KV	ten
two	rated frequency	Hz	fifty
three	rated current	A	six hundred and thirty	one hundred
four	Lightning impulse withstand voltage	kV	Ground and phase to phase 75, isolation and disconnection 85
five	1-minute power frequency withstand voltage	kV	Ground and phase 42, isolation and disconnection 48
six	Rated thermal stability current	kV	20(4S)
seven	Rated dynamic stable current	kV	fifty
eight	Rated closing current (peak value)	kV	fifty	fifty
nine	Rated short-circuit breaking current (expected value)	kA		thirty-one point five
ten	Maximum I2. t at critical breaking current	A2S		According to the characteristic curve of the fuse
eleven	Minimum breaking current	kA		According to the characteristic curve of the fuse
twelve	Rated transfer current	kA		one point five
thirteen	Maximum breaking current (reference value)	kA	one point eight
fourteen	Disconnect the capacity of the no-load transformer	kVA	one thousand two hundred and fifty
fifteen	Rated cable charging current	A	ten
sixteen	Rated active load current breaking times	time	＞100
seventeen	The time for the impactor to trigger the load switch to open the circuit breaker	S		＞0.06
eighteen	Grounding switch thermal stability current	kA	20（2s）	20（2s）
nineteen	Grounding switch thermal stability current (peak)	kA	fifty	fifty
twenty	Electric motor operating power supply voltage	V	AC/DC 110, 220