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ZN105-12/T6300-80 Vacuum Circuit Breaker for Generator

The ZN105-12/T6300-80 vacuum circuit breaker for generator was developed by our company in 2003 based on the German Siemens's 3AF technology. It is a large-capacity product with large rated current (6,300A) and high breaking capacity (80kA).

Features
1. The technical performance of this indoor AC high-voltage switching equipment reaches the international advanced level. Its rated voltage and frequency are 12kV and 50Hz respectively.

2. Equipped with the arc-extinguishing chamber from domestic 777 Factory, our vacuum circuit breaker is suitable for generator outlet protection.

3. The integrated design of operating mechanism and switch is adopted. The spring energy storage type operating mechanism can be operated by AC, DC, or hand.

4. With outstanding insulation performance, this large capacity circuit breaker can be used in indoor areas with the filthy condition of Grade II.

5. Reasonably designed, this vacuum circuit breaker has many advantages, such as strong breaking ability, complete operating functions, long mechanical life, no risk of explosion, etc. It is suitable to be used as the control and protection switch in power plants, large substations, as well as high-load industrial and mining enterprises.

Conditions of Use Environment
1. Altitude: ≤ 2,000m
2. Ambient Temperature: -25℃~+40℃
3. Relative Humidity: Daily average ≤ 95%, monthly average ≤ 90%

Technical Parameters
Item Unit Value
Rated Voltage kV 12
Rated Current A 6300
Rated Short-circuit Breaking Current kA 80
Rated Peak Withstand Current kA 224
Rated Short-time Withstand Current kA 80
Rated Short-circuit Closing Current (Peak) kA 224
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 50
Closing Time ms 40-65
Opening Time ms 35-65
Breaking Time ms 50-80
Mechanical Life times 4000
Rated Power of the Energy Storage Motor W 550
Rated Voltage of the Energy Storage Motor V ≈ 220
Energy Storage Time s ≤ 15
Rated Voltage of the Closing and Tripping Electromagnet V 220
Rated Current of the Closing and Tripping Electromagnet A 2
Rated Current of the Auxiliary Switch A AC10 DC5
Rated Out-of-step Breaking Current kA 40
Rated Load Opening and Closing Times times 50
DC Component of the Rated Asymmetrical Breaking Current % Average: 74
Maximum: 80
DC Component of the Rated Out-of-step Asymmetrical Breaking Current % 50~60

Our company is a specialized vacuum circuit breaker for generator manufacturer and supplier in China. We offer a variety of products, including air circuit breaker, low voltage distribution switchgear, gas insulated switchgear, etc.

ZN105-12/T6300-80 Vacuum Circuit Breaker for Generator
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