Overview
ZN63(VS1)-24 indoor high-voltage vacuum circuit breaker is an indoor high-voltage switchgear with a rated voltage of 24kV and three-phase AC 50Hz. It is suitable for control or protection switches in power plants, substations, industrial and mining enterprises and other transmission and distribution systems, especially for breaking important loads and frequent operations in high-altitude areas.
Operating Conditions
1. Altitude: 1000m and below;
2. Environmental temperature: upper limit+40 ℃, lower limit -15 ℃;
3. Relative humidity: daily average relative humidity not exceeding 95%, monthly average relative humidity not exceeding 90%.
4. Seismic intensity not exceeding 8 degrees;
5. A place free from flammable, explosive, or chemically corrosive substances and intense vibrations.
Technical Data
| Item | Unit | Parameter | ||||
| Rated voltage | kV | 24 | ||||
| Rated frequency | Hz | 50 | ||||
| Rated current | kA | 630,1250,1600,2000,3150 | ||||
| Rated short circuit breaking current | 20,25,31.5 | |||||
| Rated short-circuit making current (peak value) | 50,63,80 | |||||
| Rated thermal stability time | s | 4 | ||||
| Rated short-circuit breaking current breaking times | Times | 30 | ||||
| Rated operating sequence | / | O-0.3s-CO-18os-CO | ||||
| Rated lightning impulse resistance voltage(Separation point) | kV | 125 | ||||
| Rated 1min p.f Wuthstand voltage(Separation point) | kV | 65 | ||||
| Closing time | ms | ≤70 | ||||
| Opening time | ≤50 | |||||
| Mechanical life | Times | 20000 | ||||
| Rated operation voltage | V | 220/110 | ||||
| Charging time | s | ≤10 | ||||
Overall and mounting dimensions(mm)
Figure 1: Handcart type ZN63 (VS1)-24 circuit breaker suitable for 800mm cabinet width overall dimensions
| Rated current (A) | 630 | 1250 |
| Rated short-circuit breaking current(KA) | 20,25,31.5 | 25,31.5 |
| Matching static contact dimensions(mm) | Φ35 | Φ49 |
Figure 2: Handcart type ZN63 (VS1)-24 circuit breaker suitable for 1000mm cabinet width overall dimensions
| Rated current (A) | 630 | 1250 |
| Rated short-circuit breaking current(KA) | 20,25,31.5 | 25,31.5 |
| Matching static contact dimensions(mm) | Φ35 | Φ49 |
