ZN63(VS1)-24 series mccb

1. High precision mechanical structure 2. High conductivity copper

Description

ZN63(VS1)-24 series embedded poles type high- voltage vacuum circuit breaker, apply for rated voltage 24kV, frequency 50Hz three-phase AC power system, widely used in power plants,transformer substations, petrochemical, metallurgical, manufacturing, airports and communities, use for electrical, facilities' s protection and control, especially for frequently operating under the rated current or more times for short-circuit current interrupting the place. With the VD4.VEP circuit breaker full realization of interchangeable. Can be installed on the away-style or fixed air- insulated switchgear cabinet. The product accordance to GB1984<AC high voltage circuit breakers>,DL/T403,<12~40.5kV Indoor AC high-voltage circuit breaker order technical conditions>; and IEC60694, IEC6227-100 and other related standards.

ZN63(VS1 >-24 series embedded poles type high voltage vacuum circuit breaker adapt to APG advanced technology, directly to put the vacuum interrupter room and lead electrical circuit solid seal in epoxy resin post then become the way of solid sealing insulation, represents the highest level of the design and manufacture of high voltage vacuum circuit breaker today world.

Note: This models vacuum interrupter chamber seal replaced with ordinary insulation tube column installation method , the model ZN63(VS1 )-24P.

Technical data

NO	Item	Units	Value
1	Rated voltage	kV	24
2	Rated Frequency	Hz	50
3	Rated Lightning Impulse voltage tolerance(peak)	kV	125
4	Rated short-time power-frequency voltage tolerance(l min)	kV	65
5	Rated current	A	630, 1250	630, 1250	1250, 1600 2000, 2500
6	Rated short-circuit breaking current	kA	20	25	31.5
7	Rated short-circuit closing current(peak)	kA	50	63	80
8	Rated short-circuit duration time	S	4
9	Rated operating sequence		0-0.3s-C0-180s-CO
10	Rated a single 1 back-to-back electric current breaking device group	A	630/400
11	Rated short-circuit breaking current breaking number	Times	30
12	Closing time	ms	35~70
13	Opening time	ms	20~50
14	Mechanical life	Times	10000
15	Rated storage and operation voltage	V	AC220/110   DC220/110
16	Contact distance	mm	13±1
17	Contact over travel	mm	3.5±1
18	Average closing speed	m/s	0.7~1.0
19	Average opening speed	m/s	1.1~1.5
20	Contact closing spring time	ms	≤2
21	Three phase closing opening asynchrony	ms	≤2
22	Lead circuit resistance	μΩ	≤50(630A)≤45(1600~2000A)≤30(2500A)≤25(3150A)

ZN63(VS1)-24 series mccb