ZN65A-12/T4000-63 Vacuum Circuit Breaker for Generator

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Developed based on the 3AF technology introduced from German Siemens, the ZN65A-12/T4000-63 vacuum circuit breaker for generator has a large rated current (4,000A) and high breaking capacity (63KA). It is suitable for use in AC three-phase power systems with the rated voltage of 12KV and the rated frequency of 50Hz. This indoor circuit breaker can work as the control and protection switch for power plants and substations.

Features
1. With advanced and reasonable design, this vacuum circuit breaker has simple structure, strong breaking ability, complete operating functions, and long mechanical life. This is no explosion hazard during operation.

2. The spring operating mechanism adopted by our vacuum circuit breaker can be operated by AC or DC or manually.

3. Adopting air insulation, this generator circuit breaker has excellent insulation performance. Heat can be dispersed easily.

4. Our vacuum circuit breaker can fully meet the requirement of serving in indoor areas with the filth condition of Grade II.

Service Environment

Altitude	≤2,000m
Ambient Temperature	Max. 40℃
Relative Humidity	Daily average≤95% Monthly average≤90%
Earthquake Intensity	<8 degree No fire, explosion, corrosive gases, or intense shaking

Technical Parameters

Item		Unit	Value
Rated Voltage		kV	12
Rated Current		A	4000
Rated Short-circuit Breaking Current		kA	63
Rated Peak Withstand Current		kA	176
Rated Short-time Withstand Current		kA	63
Rated Short-circuit Closing Current (Peak)		kA	176
Rated Short Circuit Duration		s	3
Rated Short-circuit Current Breaking Times			5
Rated Operating Sequence			Close open -15min- Close open
Rated Frequency		Hz	50
Lightning Impulse Withstand Voltage (Peak)	Phase to phase, phase to ground	kV	75
	Vacuum break	kV	85
1min Power Frequency Withstand Voltage	Phase to phase, phase to ground	kV	42
	Vacuum break	kV	48
Closing Time		ms	45-75
Opening Time		ms	50-70
Breaking Time		ms	50-80
Mechanical Life		times	10000
Rated Power of the Energy Storage Motor		W	275
Rated Voltage of the Energy Storage Motor		V	≈ 110 220
Energy Storage Time		s	≤ 15
Rated Voltage of the Closing and Tripping Electromagnet		V	110	220
Rated Current of the Closing and Tripping Electromagnet		A	1.91	0.89
Rated Voltage of the No-voltage Release		V	≈ 110 220
Rated Current of the No-voltage Release		A	5
Rated Current of the Auxiliary Switch		A	AC10 DC5
Rated Out-of-step Breaking Current		kA	31.5
Rated Load Opening and Closing Times		times	50
DC Component of the Rated Asymmetrical Breaking Current		%	Average: 67Maximum: 69

As a China-based vacuum circuit breaker for generator manufacturer and supplier, BBE also offers outdoor vacuum circuit breaker, withdrawable switchgear, molded case circuit breaker, among others.

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Links：https://www.globefindpro.com/products/45512.html

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