Spécifications techniques
Product Overview
High-Reliability Vacuum Circuit Breaker
The ZN23-40.5 indoor vacuum circuit breaker is a robust three-phase AC high-voltage solution designed for 40.5kV systems. Featuring a handcart-type structure, it ensures simple maintenance, safe operation, and easy integration into power distribution systems. This equipment is specifically optimized for high-frequency operation environments like metallurgy and electric arc steelmaking.
Technical Specifications
- Rated Voltage
- 40.5 kV
- Rated Frequency
- 50 Hz
- Available Rated Currents
- 1250A1600A2000A
Electrical Performance
Key Electrical Metrics
185 kV
Lightning Impulse Withstand
95 kV
1-Min Power Frequency Withstand
4 s
Short Circuit Duration
Operational Characteristics
Timing Specifications
| Metric | Value |
|---|---|
| Dropout Time | ≈90 ms |
| Close Time | 50-85 ms |
| Short Circuit Close Time | 80 kA |
- Rated Operating Sequence
- O-0.3s-CO-180s-CO
