12kv Indoor High Voltage Lbs-Fuse Combination Load Break Switch for Cabinet (VACFR12-12D)

Basic Info

Model NO.	VACFR12-12D/T125-31.5
Certification	CCC, ISO9001
Voltage Level	High Voltage
Installation	Fixed
Current	AC
Rated Current	125A
Rated Thermal Stability Current	20(4s)Ka
Rated Dynamic Stability Current	50ka
Rated Shift Current	1.2ka
Rated Cable Charged Current	10A
Transport Package	Carton
Trademark	VACEM
Origin	Wenzhou, China

Product Description

1.General description
VACFR12-12D/T125-31.5KA type AC M.V. load switch-fuse combination units,is the VFKN12A-12D load switch and S*LAJ-12(XRNT*-10)M.V. current-limiting type fuse combination units together in the door M.V. switchgear.It can be a current breaking current;load switch breaking current,the fuse short-circuit breaking current breaking joint working between the current and total short-circuit current of any over-current,fuse through its impact to load switches opening.
2.Main technical parameter

Item	Unit	VACFR12-12D/T125-31.5
Rated voltage	kV	12
Rated frequency	Hz	50
Rated current	A	125
1 min power frequency withstand voltage	kV	Phase to phase,to earth 42;isolating fracture 48
Lightning impulse withstand voltage	kV	Phase to phase,to earth 75;isolating fracture 85
Rated thermal stability current	kA	20(4s)
Rated dynamic stability current	kA	50
Rated making current(peak)	kA	50
Rated short circuit breaking current(expected value)	kA	31.5
Critical breaking current max.1(2).T	kA	As per fuse characteristic curve
Min.breaking current	kA	As per fuse characteristic curve
Rated shift current	kA	1.2
Max,breaking current	kA	1.8
Breaking no-load transformer capacity	kVA	1250
Rated cable charged current	A	10
Breaking times of rated power load current	times	6000
Opening time of striker with load switch	s	<0.06
Thermal stability current of earth switch	kA	20(2s)
Dynamic stability current of earth switch(peak)	kA	50
Power voltage of motor operation	V	AC/DC 220

Item	Unit	Data
		VACFR12-12D/T125-31.5
Moving contact travel	mm	200(+8,-2)
Inter-phase center distance(before mechanism stored energy)	mm	210±1.5
Moving contact opening distance	mm	40±2
Opening clearance between auxiliary contact	mm	≥150
Tri-phase closing/opening asynchronous	ms	≤3
Just off speed	m/s	≥2.8
Just on speed	m/s	≥3.8
Distance between metal value to conduct tube	mm	≥125
Fracture distance of earth switch	mm	≥150
Main loop resistance	μΩ	≤300
Max operating torque	N.m	≤160

Note:1.Measure the distance between moving and fixed auxiliary contact,may measure the fixed arc contact after to conduct tube ejector nozzle end surface to add 24mm thickness.
2.While measuring main loop resistance of VFKRN12A-12D combination electrical appliance,fuse can be replaced by conduct rod whose resistance can be ignored.
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