ZN63 (VS1)Side-Mounted Indoor High-Voltage Vacuum Circuit Breaker

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Overview

ZN63(VS1)-12 series indoor high-voltage vacuum circuit breaker is an indoor high-voltage switchgear, suitable for three-phase power system with rated voltage of 12kV and frequency of 50Hz. It is used as protection and control electrical appliances. Excellent performance, especially suitable for places that require frequent operation at rated current, or break short-circuit current many times.
ZN63(VS1)-12 series side-mounted vacuum circuit breaker adopts fixed installation and is mainly used for fixed switch cabinet. system.

VS1

Normal Use Conditions

◆ Ambient temperature: – 10 ℃ to 40 ℃ (storage and transportation at – 30 ℃ are allowed).

◆ Altitude: generally not more than 1000m. (If it is necessary to increase the altitude, the rated insulation level will increase accordingly)

◆ Relative humidity: under normal conditions, the daily average is not more than 95%, the daily average saturated steam pressure is MPa, and the monthly average is not more than 1.8 × ten

◆ Seismic intensity: not more than 8 degrees under normal conditions.

◆ It can only be used in places without fire, explosion, serious pollution, chemical corrosion and serious vibration.

The Main Technical Parameters

Serial number	Name		Units	Data
1	Rated voltage		kV	12
2	Maximum working voltage		kV	12
3	Rated current		A	630 1250	630 1250 1600 2000 2500 3150	1250 1600 2000 2500 3150 4000
4	Rated short-circuit breaking current (rated thermally stable current – RMS)		kA	20/25	31.5	40
5	Rated short-circuit making current (peak value)		kA	50/63	80	100
6	Rated peak withstand current (rated dynamic stable current – peak value)		kA	50/63	80	100
7	4S rated short-circuit withstand current		kA	20/25	31.5	40
8	Rated insulation level	Working withstand voltage (before and after rated breaking) 1 min power frequency withstand voltage	kv	Ground 42 (fracture 48)
		Impulse withstand voltage (before and after rated breaking) Rated lightning impulse withstand voltage peak value		Ground 75 (fracture 85)
9	Rated thermal stabilization time		s	4
10	Nominal Operation Sequence			Score – 0.3S – Combined – 180S – Combined
11	Mechanical life		times	20000
12	Rated short-circuit breaking current breaking times		times	50
13	Operating mechanism rated closing voltage (DC)		v	AC . DC 110，220
14	Operating mechanism rated opening voltage (DC)		v	AC . DC 110，220
15	Contact Spacing		mm	11±1
16	Overtravel (contact spring compression length)		mm	3.5±0.5
17	Three-phase opening and closing bounce time		ms	≤2
18	Contact closing bounce time		ms	≤2
19	Average opening speed		m/s	0.9~1.2
	Average closing speed		m/s	0.5~0.8
20	Opening time	at the highest operating voltage	s	≤0.05
21		at minimum operating voltage		≤0.08
22	Closing time		s	0.1
23	Main circuit resistance of each phase		υ Ω	630≤50 1250≤45
24	The dynamic and static contacts allow the accumulated thickness of wear		mm	3