main product features:
1. the integrated isolation circuit breaker is mainly composed of isolation circuit breaker, grounding switch and mechanical interlocking system and can integrate electronic current transformers and intelligent modules. it is one of the most important equipment in the new generation of intelligent substations. it meets the requirements of iec 62271-1 and iec 62271-100.
2. the isolation circuit breaker conducts split-phase operation and is equipped with a spring operation mechanism. based on the development of the 252 kv self-energy circuit breaker and grounding switch, the product has reached classes e2 and c2, with high fracture insulation margin, excellent breaking performance and high reliability.
3. the isolation circuit breaker replaces the traditional open circuit breaker and isolation switch to realize functional combination, reduce the number of equipment, improve reliability, reduce failure rate and reduce maintenance. it can save about 50% more space than the traditional layout.
|
no. |
item |
unit |
data | |
|
1 |
rated voltage |
kv |
252 | |
|
2 |
rated current |
a |
4000 | |
|
3 |
rated frequency |
hz |
50/60 | |
|
4 |
rated short-time withstand current / time |
ka/s |
50/3 | |
|
5 |
rated peak withstand current |
ka |
125 | |
|
6 |
rated short-duration power-frequency withstand voltage |
phase-to-earth |
kv |
460 |
|
across isolating distance |
kv |
460 146 | ||
|
rated lightning impulse withstand voltage |
phase-to-earth |
kv |
1050 | |
|
across isolating distance |
kv |
1050 206 | ||