vsce(i) vacuum circuit breakers-尊龙凯时最新

vsce(i) vacuum circuit breakers

1. product introduction
vsce (i) series indoor high voltage ac vacuum circuit breaker is an indoor device with three-phase ac 50hz and rated voltage of 12kv. it can be used for the control and protection of electrical facilities in industry, mine, enterprise, power plant and substation. the product conforms to the national standard gb1984 "ac high voltage circuit breaker" and the international electrotechnical commission iec60056 "high voltage ac circuit breaker" and other standards.
the installation form of the circuit breaker in the cabinet is withdrawable handcart type. there are also fixed circuit breakers arranged on the side of the mechanism.

2. product features
◆ totally enclosed pole has excellent electrical performance
◆ the circuit breaker mechanism has excellent anti-corrosion performance and advanced design
◆ the circuit breaker is c2 level
in the process of capacitive current breaking, the circuit breaker has a very low probability of re striking, which meets the requirements of class c2 circuit breaker
◆ adopt buffer with excellent buffer performance
the specially designed buffer reduces the overshoot and rebound of opening, and improves the mechanical life of the circuit breaker
◆ nylon insulated pull rod
the insulated pull rod is made of imported nylon 66 and glass fiber material, which not only ensures the strength and toughness, but also ensures the electrical performance

3. main technical parameters

no.	item			unit	data
1	rated voltage			kv	12
2	rated insulation level	rated power frequency withstand voltage(kv 1min)	phase to ground and phase to phase		42
			isolating distance		48
		rated lightning shock resistance	phase to ground and phase to phase		75
			isolating distance		85
3	rated frequency			hz	50
4	rated current			a	630 and 1250
5	rated short-term withstand current			ka	20, 25 and 31.5
6	rated peak withstand current				50	63		80
7	rated short circuit withstand current				20	25		31.5
8	duration of rated short circuit			s	4
9	rated short circuit closing current			ka	50	63	80
10	rated operation sequence			s	o-0.3s-co-180s-co
11	breaking time			ms	<80
13	times of breaking for rated short circuit breaking current			times	30
14	mechanical life				30000

4. overall dimensions

width of cabinet	data （12kv）	p	a	b	c	d
600	630a …31.5ka	150	502	502	498	42.5
600	1250a …31.5ka	150	502	502	498	42.5
800	630a …31.5ka	210	650	652	648	42.5
800	1250a …31.5ka	210	650	652	648	42.5
1000	630a …31.5ka	275	850	852	844	48.5
1000	1250a …31.5ka	275	850	852	844	48.5

drawing 4: overall dimension of handcart type breaker

data（12kv）	p	a	b	h1	h2	h
630、1250a …31.5ka	150	450	400	236	275	552
	210	588	550	236	275	552

drawing 5: overall dimension of fixed type breaker

width of cabinet	distance	a	b	c	d	e
1000	275	850	800	700	852	880
800	210	650	600	550	652	680
650	150	500	450	400	502	530
550	150	400	350	300	402	430

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