VT 19-12 EP Indoor HV AC Resin Vacuum Circuit Breaker Made in China - Suppliers and Manufacturers

Product Description

1.Introduction Of VT 19-12 EP Indoor HV AC Resin Vacuum Circuit Breaker

VT 19-12 EP Indoor HV AC Resin Vacuum Circuit Breaker is used in three-phase AC electric system of 50HZ、12kV. It is used as control and protection department in the mining company 、power factory and substation

2. Parameter (Specification) of VT 19-12 EP Indoor HV AC Resin Vacuum Circuit Breaker

The main parameter of VT 19-12 EP Indoor HV AC Resin Vacuum Circuit Breaker

Rated voltage		12kV
Rated frequency		50Hz
Rated lighting impulse withstand voltage(between phases、phase to earth) /isolated fracture		(75) / 85kV (peak value)
Rated 1min power withstand voltage(between phases、phase to earth) /isolated fracture		(42) / 48kV (r. m. s)
Rated operation sequence		O-0.3s-CO-180s-CO
Rated current (A)		630,1250	1250~3150	1250~3150	3150,4000
Rated short circuit breaking current (r. m. s, kA)		20/25	31.5	40	50
Rated short circuit making current (peak value, kA)		50/63	80	100	125
Rated short time withstand current/short circuit continuous time (kA/s)		20、25/4	31.5/4	40/4	50/4
Rated peak withstand current (kA)		50/63	80	100	125
Breaking times of rated short circuit current(times)		30	30	30	20
Mechanical duration (times)		20000	20000	10000	10000
Weight (kg)	Fixed type	≤200
	Truck type	≤250

*Note: The parameters of grey color are for bushing type circuit breaker.

Mechanical characteristic of 12KV VT 19-12 EP Indoor HV AC Resin Vacuum Circuit Breaker

Name		Unit	;Data
Distance of contact terminal		mm	11±1
Over-travel			3.5±1
Three-phase opening & closing asynchronous		ms	≤1
Tripping time of closing contact terminal		ms	≤2
Closing & opening time	Opening	ms	≤50
	Closing		≤70
Average opening speed		m/s	0.9~1.2
Average closing speed.			0.5~0.8

4. Service condition of VT 19-12 EP Indoor HV AC Resin Vacuum Circuit Breaker

▲Normal condition
Ambient temperature +40℃~-15℃
Ambient humidity Daily average relative humidity ≤95%
Daily average stream pressure ≤2.2ⅹ10-3MPa
Monthly average relative humidity ≤90%
Monthly average stream pressure ≤1.8ⅹ10-3Mpa
Elevation ≤1000m
Degree of earthquake <8
The site has no water、no fire goods and explosion goods、no chemical goods and serious quake.

▲Special condition
If user has some special requirement, please negotiate by manufacture and user.

5. Qualification Of VT 19-12 EP Indoor HV AC Resin Vacuum Circuit Breaker

VT 19-12 EP Indoor HV AC Resin Vacuum Circuit Breaker is identified by some national standards and international relative standards, such as GB1984、GB/T11022、DL/T403 and IEC62271, etc. It has reliable lockage, used as truck department or fixed installation department.