main product features:
lw35-72.5 live tank type sf6 circuit breaker is a new generation of high voltage sf6 circuit breakers developed by the company. its interrupter chamber adopts a self-energy interrupter structure, and three-phase operation adopts three-phase mechanical linkage. it is equipped with a ctb-i full spring operation mechanism to greatly reduce operating noise and realize remote electric control or local manual control, being beneficial to urban network construction and renovation. the circuit breaker is designed reasonably and its technical performance reaches the leading level in china. it has the characteristics of compact structure, beautiful appearance, high insulation level, good breaking performance, high reliability, convenient installation, transportation and maintenance, and low operating noise. it meets the requirements of iec 62271-1 and iec 62271-100.
|
no. |
item |
unit |
data | |
|
1 |
rated voltage |
kv |
72.5 | |
|
2 |
rated current |
a |
3150 | |
|
3 |
rated frequency |
hz |
50/60 | |
|
4 |
rated short-time withstand current /time |
ka/s |
31.5/3 | |
|
5 |
rated peak withstand current |
ka |
80 | |
|
6 |
rated short-duration power-frequency withstand voltage |
phase-to-earth |
kv |
160 |
|
across isolating distance |
kv |
200 | ||
|
rated lightning impulse withstand voltage |
phase-to-earth |
kv |
350 | |
|
across isolating distance |
kv |
410 | ||