1. ZN63 VS1 series 3 phase indoor 24kv 630A 1250a vcb vacuum circuit breaker
4. Main Technical Parameters
Item | Unit | 20kva | 25kA | 31.5kA | 40kA | 50kA | |
Rated Voltage | kV | 24 | |||||
Max working voltage | kV | 24 | |||||
Rated Current | A | 630 | 1250 | 1250 1600 2500 3150 | 1250 1600 2500 3150 | 1250 2500 3150 | |
Rated short circuit breaking current | kA | 20 | 25 | 31.5 | 40 | 50 | |
Rated short circuit making current (peak) | kA | 50 | 63 | 80 | 100 | 125 | |
Rated peak withstand current | kA | 50 | 63 | 80 | 100 | 125 | |
4s rated short time withstand current | kA | 20 | 25 | 31.5 | 40 | 50 | |
Rated insulation level | Power frequency withstand voltage | kV | 42(fracture48) | ||||
Impulse withstand voltage | 75(fracture85) | ||||||
Rated sequence of operation | 0-0.3s-CO-180s-CO | ||||||
Mechanical life | time | 10000 | |||||
Breaking times of rated short circuit breaking current | time | 50 | |||||
Operating voltage | V | AC/DC110, 220 | |||||
Clearance between open contacts | mm | 11±1 | |||||
Over travel (contact spring reduction length) | mm | 4±0.5 | |||||
Three-phase opening/closing asynchrunous | ms | ≤2 | |||||
Contact closing bounce time | ms | ≤2 | |||||
Avarage opening speed | m/s | 0.9~1.2 | |||||
Avarage closing speed | m/s | 0.4~0.8 | |||||
Opening time | Under max operation voltage | s | ≤0.05 | ||||
Under min operation voltage | ≤0.08 | ||||||
Closing time | s | ≤0.1 | |||||
Each phase main loop resistance | µΩ | ≤40 | |||||
Allowable attrition thickness of moving and fixed contact | mm | 3 |
5. Application
Maximum temperature: +40℃; Minimum temperature:-25℃.
Altitude above sea level: Maximum installation altitude: 2500m.
Humidity: Monthly average humidity 95%; Daily average humidity 90% .
Ambient air not apparently polluted by corrosive and flammable gas, vapor etc.
No frequent violent shake.
6. Factory