Product Overview
ZN23-40.5 series indoor high voltage vacuum circuit breaker is a three-phase AC 50Hz, rated voltage 40.5kV indoor power distribution device, equipped with CT19BN spring operating mechanism or CD10 Ⅲ electromagnetic operating mechanism.
It is suitable for the protection and control of AC power distribution system, and frequent operation places such as electric arc furnace transformers. It is not suitable for dangerous places such as inflammable and explosive.
Working Environment
◆ Ambient temperature: upper limit +40 ℃ ; lower limit -10 ℃ in general
areas, -25℃ in high-cold areas;
◆ Relative humidity: daily average not more than 95%, monthly average not
more than 90%; saturated vapor pressure daily average not more than
2.2×10-3MPa, monthly average not more than 1.8×10-3MPa;
◆ The altitude does not exceed 1000m;
◆ No corrosive gas;
◆ No frequent strenuous exercise.
Main Technical Parameters
No. | Item | Unit | Data |
1 | Rated power of energy storage motor | W | 250 |
2 | Energy storage motor rated voltage | V | ~220、-220 |
3 | Energy storage time | s | 15 |
4 | Rated voltage of closing electromagnet (Rated voltage of switch magnet powered by independent power supply) | V | ~220、-220 |
5 | Overcurrent release rated current | A | 5 |
6 | Auxiliary Switch Rated Current | A | 10 |
7 | Limit Switch Rated Current | A | 2 |
Note: The rated voltage in parentheses is provided only as required by the user.
Electromagnetic Operating Mechanism Parameter:
No. | Item | Unit | Data |
1 | 220V Closing coil current | A | 147 |
2 | 220V Closing coil resistance | Ω | 1.5±0.12 |
3 | 110V Closing coil current | A | 294 |
4 | 110V Closing coil resistance | Ω | 0.38±0.03 |
5 | 220V Closing coil current | A | 2.5 |
6 | 220V Closing coil resistance | Ω | 88±4.4 |
7 | 110V Closing coil current | A | 5 |
8 | 110V Closing coil resistance | Ω | 22±1.1 |