This document describes the ABB 40.5kV VD4 vacuum circuit breaker designed for 1680mm wide KYN61 switchgear, featuring German-made arc chambers and a spring…
The ABB 40.5kV VD4 vacuum circuit breaker is developed based on the standard ABB design to meet diverse customer needs. It features a phase spacing of P=440mm and an air clearance greater than 300mm, fully compatible with 1680mm wide KYN61 type switchgear. The unit utilizes original German ABB vacuum arc chambers for high reliability and safety. This manual is written in Chinese.
| Rated Voltage | 40.5 kV |
|---|---|
| Rated Frequency | 50 Hz |
| Withstand Voltage (Power Frequency) | 95 kV |
| Lightning Impulse Withstand Voltage | 185 kVp |
| Rated Current Range | 1250...2500 A |
| Short-time Withstand Current | 25...31.5 kA |
| Peak Withstand Current | 63...80 kAp |
| Rated Short-time Current Duration | 4 s |
| Operating Temperature Range | -15~+40 C |
It is fully compatible with 1680mm wide KYN61 type switchgear.
The phase spacing is P=440mm, and the air clearance is greater than 300mm.
It uses a classic spring operating mechanism (卷簧操动机构).