Products - CHINA·LONGXI ELECTRIC CO.,LTD.

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Products

ZW32-12Y Type Outdoor HV AC Vacuum Circuit Breaker

Summary

ZW32-12Y type outdoor HV AC vacuum circuit breaker is used to make and break load current, overload current and short-circuit current in the power system with rated voltage 12kV, three-phase AC 50/60Hz. It is applicable to substations, industrial and mining enterprises, unban and rural electric power networks, especially to the occasions with frequent operation and automatic power distribution networks for power network control and equipment protection. The product conforms to the standards of IEC62271-100 & GB1984: AC high voltage circuit breaker, IEC60694 & GB/T11022: HV general technical requirement of switch and control apparatus.

Ambient conditions

1. Altitude:≤2000m;
2. Ambient temperature: -40℃～+45℃；diurnal temperature rang≤25℃;
3. Wind speed:≤35m/s, equivalent to wind pressure of 700Pa;
4. Earthquake intensity:≤grade 8;
5. Relative humidity: monthly average≤90%; daily average ≤95%;
6. Ice thickness:≤10mm
7. Sunlight intensity:≤1000W/m2
8. Pollution degree:≤Ⅳ(GB5582);
9. Applicable occasions: no fire and explosion danger, no chemical corrosion and no frequent severe vibration

Model

Technical specification

No.	Item			Unit	Data
1	Rated voltage			kV	12
2	Rated insulation level	1min P.F withstand voltage	Dry test		42/48(isolating distance)
			Wet test		34
			Auxiliary loop and control loop		2
		Lightning impulse withstand voltage(peak)			75/85(isolating distance)
3	Rated frequency			Hz	50/60
4	Rated current			A	630	1000	1250
5	Rated short-circuit breaking current			kA	16	20	25
6	Rate short-circuit making current(peak)				40	50	63
7	Rated peak withstand current(peak)				40	50	63
8	Rated short-time withstand current(4s)				16	20	25
9	Rated short-circuit duration			s	4
10	Breaking times of rated short-circuit breaking current			times	30
11	Closing time			ms	≤50
12	Opening time				≤60
13	Complete breaking time				≤100
14	Arcing time				≤50
15	Mechanical life			times	10000
16	Rated operating voltage and rated auxiliary loop current			V	AC/DC 220
17	Charging time under rated voltage			s	≤8
18	Average opening speed			m/s	1.2±0
19	Average closing speed				0.6±0.
20	Contact close-bouncing time			ms	≤2
21	Three-phase opening non-simultaneity				≤2
22	Allowed accumulative wear thickness for moving and static contacts			mm	3
23	DC resistance for each phase loop(with isolator)			μΩ	≤80(120 with isolator)
24	Contact self-closing pressure			N	2000±200
25	Phase-to-phase spacing			mm	340±1.5
26	Net weight			kg	105(130 with isolator)

Technical parameter for P.M operating mechanism

No.	Item		Unit	Data
	DC operating power supply, coil short-time duty			CDY-Ⅰ	CDY-Ⅱ	CDY-Ⅲ
1	220V closing/opening coil	Calculating current	A	53	70	100
		resistance(20℃)	Ω	4.2±0.2	3.2±0.17	2.2±0.12
2	Applicable to circuit breaker’s spec.			16kA	20kA	25kA
3	Power supply voltage			AC220V

Main function features

1. The performance of the product is stable and reliable as the product adopts three-pillar type structure, and the vacuum arc-extinguishing chamber connects with the operating mechanism through insulation pulling rod;
2. Arc-extinguishing chamber, main conducting loop and insulation support are casted into an organic whole by epoxy resin with APG technology, and encapsulated with silicon rubber, it is provided with good anti-condensation performance and mechanical strength.
3. The switch adopts a high performance permanent magnet operating mechanism with the advantages of simple structure and long mechanical life, and with the functions of manual/electric energy storage and opening/closing operation.
4. An integrated isolation switch is optional for the product.
5. The product has the advantages of small size, novel appearance, light weight and easy installation.
6. The switch can be equipped with control terminal interface to apply to automation distributiong networks and the unattended substations.

Outline and installation dimension