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.
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
|Ambient Temperature||Max. +40℃|
|Relative Humidity|| Daily average≤95%
|Earthquake Intensity|| <8 degree
No fire, explosion, corrosive gases, or intense shaking
|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|
|Lightning Impulse Withstand Voltage (Peak)||Phase to phase, phase to ground||kV||75|
|1min Power Frequency Withstand Voltage||Phase to phase, phase to ground||kV||42|
|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: 67
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.