Description
GENERAL ZW7-40.5 series outdoor high-voltage AC vacuum circuit breaker (hereinafter referred to as "circuit breaker") is an outdoor high-voltage distribution switchgear with three-phase AC 50Hz and a rated voltage of 40.5kV, which is mainly used to open and close the load current, overload current and short-circuit current in the power system. The circuit breaker is suitable for the control and protection of substations, industrial and mining enterprises, and urban and rural power grids, especially for places requiring frequent operation and urban power distribution automation networks.
The circuit breaker complies with technical standards such as GB / T19842014 high voltage AC circuit breaker, DL / T402-2016 high voltage AC circuit breaker, and DL / T4032000 technical conditions for ordering 12kV ~ 40.5kV high voltage vacuum circuit breaker.
MODEL DESCRIPTIONUSAGE: ENVIRONMENTAL CONDITION- Altitude: ≤ 1000m, If the altitude is higher than 1000m, the rated insulation level shall be corrected accordingly.
- Ambient temperature: -40 o C ~ +45 o C,
- Maximum daily temperature difference: 25 K
- Humidity: Average daily relative humidity: 95%, average monthly relative humidity: 90%.
- Sunshine intensity: not more than 0.1W/cm 2
- Wind Speed: 34m/s
- Wind pressure: 700Pa
- Pollution level: e - level
- Icing thickness: Not more than 10mm
- Resistance to floor drain: horizontal acceleration 0.3g, vertical acceleration 0.2g
MAIN ADVANTAGES
☆ Adopt vacuum arc extinguishing, with strong breaking capacity and long mechanical life;
☆ simple structure, long maintenance period
☆Good insulation performance, strong pollution resistance, no fire and explosion hazard;
☆ It can be built-in or external two or three- phase current transformers, with high measurement accuracy;
☆ Built-in intelligent temperature and humidity controller to ensure the normal and reliable operation of the product in cold regions;
☆The overall sealing design of the shell is improved, which can effectively prevent the adverse effects of bad weather such as sand and dust storms.
MAIN TECHNICAL PARAMETERS | No. | Item | Unit | Data |
| 1 | Rated frequency | Hz | 50 |
| 2 | Rated voltage | kV | 40.5 |
| 3 | Rated current | A | 1250 / 1600 / 2000 |
| 4 |
Rated short-time power frequency withstand voltage | Interphase, to earth(dry) | kV/min | 95/1 |
| Fracture (dry) | 118/1 |
| Interphase, to earth(wet) | 80/1 |
| Secondary circuit to earth | 2/1 |
| 5 | Rated lightning impulse withstand voltage | Interphase, to earth | kV | 185 |
| Fracture | 215 |
| 6 | Rated Short-circuit Breaking Current | kA | 31.5 |
| 7 | Rated Short-Circuit Closing Current | 80 |
| 8 | Rated short-time withstand current and duration | kA/s | 31.5/4 |
| 9 | Rated Peak-withstand current | kA | 80 |
| 10 | Rated Short-circuit breaking current breaking times | Times | 20 |
| 11 | Rated operating voltage and Rated Voltage for auxiliary(control) circuit | V | AC/DC220 AC/DC110 |
| 12 | Main Circuit Resistance | μΩ | ≤ 100 |
| 12 | Mechanical life | Times | 10000 |
| Note: If the altitude is over 1000m, the rated insulation level should be modified as appropriate. |
OUTLINE AND INSTALLATION DIMENSION
Complaint
