40.5KV Indoor Vacuum Interrupter
This 40.5KV vacuum interrupter is designed for indoor circuit breaker applications. It utilizes vacuum technology for efficient arc quenching, ensuring reliable interruption of high-voltage circuits.
Technical Specifications
Product Overview
High-Performance Vacuum Interrupter
This 40.5KV indoor vacuum interrupter serves as a critical component for high-voltage circuit breakers, designed to supply power reliably and interrupt currents effectively during overloads or short circuits. Featuring a corrugated ceramic insulation shell and copper-tungsten alloy contacts, it offers high insulating levels, low noise, and a long service lifetime. Its robust design ensures explosion-free operation and minimal maintenance, making it ideal for power transmission, distribution, metallurgy, and industrial heating systems.
- Typical Applications
- Power TransmissionDistribution ControlMetallurgyMiningPetroleumChemical IndustryRailwayIndustrial High Frequency Heating
Electrical Ratings
Core Electrical Metrics
40.5 KV
Rated Voltage
2,000 A
Max Rated Current
31.5 KA
Max Short-circuit Breaking Current
Electrical Specifications
| Specification | Value |
|---|---|
| Rated Frequency | 50/60 Hz |
| Rated Short-time Power Frequency Withstand Voltage (1min) | 95 KV |
| Rated Lightning Impulse Withstand Voltage | 185 KV |
| Rated Short-circuit Making Current (Peak) | 63/80 KA |
| Rated Duration of Short-circuit | 4 s |
| Circuit Resistance at Rated Contact Force | ≤20 μΩ |
Mechanical Requirements
Mechanical Performance
| Parameter | Value |
|---|---|
| Mechanical Life | 10,000 operations |
| Contact Stroke | 22 ± 2 mm |
| Opening Speed (average) | 1.6 ± 0.2 m/s |
| Closing Speed (average) | 0.75 ± 0.2 m/s |
| Rated Contact Compressive Force | 3100 ± 200 N |
| Moving Part Weight | ≤ 4 kg |
Durability & Maintenance
- Shelf Life: 20 Years
- Contact Erosion Limit: 3mm
- Maximum Contact Bounce Duration: ≤2ms
- Closing and Opening non-simultaneity: ≤2ms
