ODM ZN63 (VS1) Indoor High-Voltage Vacuum Circuit Breaker Supplier, Manufacturers

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ODM ZN63 (VS1) Indoor High-Voltage Vacuum Circuit Breaker Supplier, Manufacturers

ZN63 (VS1) -12 series indoor fixed high-voltage vacuum circuit breaker is a switchgear suitable for high-voltage power distribution systems with rated voltages of 12kV and below. The circuit breaker adopts vacuum arc extinguishing technology, has excellent arc extinguishing performance and reliable electrical characteristics, and can effectively protect the safe operation of power equipment and lines. The design of the vacuum arc extinguishing chamber enables the circuit breaker to maintain good performance and a long service life under frequent operation and short-circuit conditions. It is an indispensable and important equipment in modern power systems and is widely used in various high-voltage power equipment with its excellent performance and reliability.

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Product Description

Purpose and Scope of Use

ZN63(VS1)-12 series indoor fixed high-voltage vacuum circuit breaker is a three-phase AC 50Hz, rated voltage of 12kV indoor switchgear, which can be used for the control and protection of industrial and mining enterprises, power plants and substations, electrical facilities, and is suitable for frequent operation places. The operating mechanism is integrated with the circuit breaker body, and the design can be used as a fixed installation unit, or it can be equipped with a special propulsion mechanism to form a handcart unit. The main circuit part can be used as an integral solid pole to achieve circuit breaker miniaturization, high reliability, maintenance-free, can be equipped with KYN28A-12(GZS) and other mid-mounted handcart switchgear, fixed can also be used for XGN series fixed switchgear.

Model Meaning

Conditions of Normal Use

Ambient temperature: not higher than 40°C, not lower than -10°C (storage and transportation at -30°C is allowed).
Altitude: no more than 1000m (If higher altitude is required, the rated insulation level will be increased accordingly).
Relative humidity: the daily average value is not more than 95%, the daily average value of saturated vapor pressure is not more than 2.2 × 10^-3 MPa, and the monthly average is not more than 1.8 × 10^-3 MPa.
Seismic intensity: no more than 8.
No fire, explosion, serious pollution, chemical corrosion and violent vibration.

Main Technical Parameters

Serial Number	Project			Unit	Data
1	Rated voltage			kV	12
2	Maximum operating voltage			kV	12
3	Current rating			A	63	630 1250		1250 1600
						1600 2000		2000 2500
					1250
						2500 3150		3150 4000
4	Rated short-circuit breaking current (rated thermal stability current - RMS)			kA	20/25	31.5		40
5	Rated short-circuit closing current (peak)			kA	50/63	80		100
6	Rated peak withstand current (rated dynamic stabilized current - peak)			kA	50/63	80		100
7	4S rated short-circuit withstand voltage			kA	20/25	31.5		40
8	Rated insulation level	Working withstand voltage (before and after rated breaking) / 1min power frequency withstand voltage		kV	To the ground 42 (fracture 48)
		Impulse withstand voltage (before and after rated breaking) / rated lightning impulse withstand voltage peak			To the ground 75 (fracture 85)
9	Rated thermal settling time			S	4
10	Rated sequence of operations				Minutes-0.3S-combines-180S-combines
11	Mechanical life			Order	20000
12	Rated number of short-circuit breaking current interruptions			Order	50
13	Rated closing voltage of operating mechanism (DC)			V	AC / DC 110, 220
14	Rated opening voltage of operating mechanism (DC)			V	AC / DC 110, 220
15	Contact opening distance			mm	11 ± 1
16	Overtravel (contact spring compression length)			mm	3.5 ± 0.5
17	Three-phase splitting, 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 maximum operating voltage	s	≤ 0.05
21			At the lowest operating voltage		≤ 0.08
22	Close time			s	0.1
23	Resistance of each phase main circuit			μΩ	630 ≤ 50		1250 ≤ 45
24	Accumulated thickness of wear allowed for dynamic and static contacts			mm	3

Frequently Asked Questions

1. What is the rated voltage of the ZN63(VS1)-12 vacuum circuit breaker?

The rated voltage and the maximum operating voltage of this series are both 12kV.

2. What are the ambient temperature requirements for normal operation?

The normal operating ambient temperature should be within the range of -10°C to 40°C. However, storage and transportation are allowed at temperatures as low as -30°C.

3. Can this indoor vacuum circuit breaker be used at high altitudes?

Yes, it is standardly designed for altitudes up to 1000m. For higher altitude applications, the rated insulation level can be increased accordingly to meet installation requirements.

4. What is the mechanical service life of the ZN63(VS1)-12?

This vacuum circuit breaker is designed for high reliability and frequent operation, offering a mechanical life of up to 20,000 cycles.

5. Can this circuit breaker be installed in both fixed and handcart switchgear?

Yes, it features an integrated design that allows it to be used as a fixed installation unit, or it can be equipped with a propulsion mechanism to serve as a handcart unit compatible with mid-mounted switchgear like KYN28A-12(GZS).