Product Overview
ZW32-12 type outdoor high voltage VCB, is suitable for the 3-pphase power system with AC 50HZ, voltage 10-12KV,used as breaking, closing load current. It has the functionof overload and short circuit protection, can meet the requirements of controlling and measurement. It also canbe used as remote control, monitoring, etc. It is suitable foor controlling and protecting equipment for substation and miningenterprises power system, also suitable for the places with frequently operation in rural power grid.
Model and Meaning
Service Conditions
- The standard design altitude does not exceed 1000 m. For special requirements, the design can be revised for altitudes ranging from 2000 m to 4000 m to meet operation demands at different altitudes;
- Ambient air temperature: -40℃ ~ +40℃;
- Maximum wind speed: 35 m/s;
- Installation site free from severe vibration;
- Pollution class Ⅳ.
Functional Features
The circuit breaker adopts a three-phase pillar structure with stable & reliable breaking performance, no fire/explosion hazard, maintenance-free operation, compact size, light weight and long service life. Its high-performance sealed structure greatly improves moisture and condensation resistance, suitable for cold and humid regions.
Technical Parameters
| sl.No | Item | Unit | Data | |||
| 1 | Rated voltage | 12 | 24 | |||
| 2 | Rated insulation level | 1min power frequency withstand voltage | Dry | kV | 42 | 65 |
| Wet | 34 | 50 | ||||
| Lightning impulse withstand voltage (peak) | 75 | 125 | ||||
| 3 | Rated current | A | 630; 400; 200 | 630; 400; 200 | ||
| 4 | Rated short circuit breaking current | kA | 20; 16; 12.5 | 20; 16; 12.5 | ||
| 5 | Rated operating sequence | O-0.35-CO-180S-CO | O-0.35-CO-180S-CO | |||
| 6 | Rated short-circuit breaking times | Times | 30 | 30 | ||
| 7 | Rated short-circuit making current (peak) | kA | 50 | 50 | ||
| 8 | Rated peak withstand current | |||||
| 9 | Rated short-circuit withstand current | 20 | 20 | |||
| 10 | Rated short circuit duration | s | 4 | 4 | ||
| 11 | Opening time (SHT) | Maximum operating voltage | ms | 15-50 | 15-50 | |
| Rated operating voltage | ||||||
| Minimum operating voltage | 30-60 | 30-60 | ||||
| 12 | Closing time | ms | 25-50 | 25-50 | ||
| 13 | Full-off time | ≤100 | ≤100 | |||
| 14 | Arcing time | 20 | 20 | |||
| 15 | Mechanical life | Times | 1000 | 1000 | ||
| 16 | Charging motor rated input power | W | 40 | 40 | ||
| 17 | Rated operating voltage and auxiliary voltage circuit | V | DC220, 110, 24 | DC220, 110, 24 | ||
| AC220, 110, 24 | AC220, 110, 24 | |||||
| 18 | Rated voltage of the storage time | s | ≤10 | ≤10 | ||
| 19 | Over current release | Rated current | A | 5 | 5 | |
| Trip current accuracy | % | ±10 | ±10 | |||