main product features:
1. this product is a compact combination of circuit breaker, ct and bushing with low overall center of gravity and compact structure, and can adapt to low temperature environment of -40℃. it meets the requirements of iec 62271-1 and iec 62271-100.
2. the interrupter of the circuit breaker has a single break design and is double-acting, with advanced structure and high technology. the product has strong breaking ability and long contact life. the cumulative number of breaking under the rated short-circuit current is up to 20 times, and it has a long maintenance period.
3. except for the bushing unit which is packaged separately, the interrupter unit, hydraulic operation mechanism, current transformer and other components of the single-phase circuit breaker are packaged as a whole, and on-site docking and adjustment are not required for the product, which is convenient for installation.
4. it is equipped with a ct port - 2.6 ⅲ spring operation mechanism which has compact structure, simple appearance, simple operation and easy maintenance.
5. the spring mechanism is stable and reliable, with low operating noise and high energy storage efficiency (the energy storage time is not more than 15 seconds), and has no hidden dangers such as oil and gas leakage, compared with the traditional hydraulic mechanism.
|
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) | ||