The 0.4KV low-voltage cable branch box developed by Zhongfeiya Tech is mainly used in public power grids. It can be used in accordance with the requirements of the distribution network and users, according to a variety of wiring methods, box types, and installation methods, so that users can be flexible and easily choose among the changeable schemes.
0.4kv Low Voltage Cable Branch Box
The 0.4KV low-voltage cable branch box developed by Zhongfeiya Tech is mainly used in public power grids. It can be used in accordance with the requirements of the distribution network and users, according to a variety of wiring methods, box types, and installation methods, so that users can be flexible and easily choose among the changeable schemes. In the construction and transformation of the national urban network, it is a support product that replaces the overhead line. It is widely used in three-phase AC 380/220V, rated current below 1250A, low-voltage power transmission and distribution systems, such as substations, industrial and mining enterprises, both sides of streets, garden residential quarters, high-rise buildings, airports, and key construction and renovation projects. As a complete set of sizing equipment that uses cables to distribute electrical energy to other users or equipment.
| Tech Item | With a molded case circuit breaker | with a strip fuse-type load disconnect switch |
|---|---|---|
| Rated voltage (kV) | 0.4 | 0.4 |
| Maximum working voltage(kv) | 0.8 | 0.8 |
| Rated frequency(Hz) | 50/60 | 50/60 |
| Rated current(A) | 10~800 | 160/250/400/630 |
| 1min power frequency withstand voltage(kv) | 3 | 3 |
| Lightning impulse withstand voltage(kV) | 6 | 8 |
| Rated thermal stability current (kA/s) | 12ln/5kA | - |
| Rated active breaking current(A) | 10~800 | 160/250/400/630 |
| Rated short-circuit breaking current (A) | 25/35/50/65 | 50 |
| Rated short-circuit making current (A) | (1.5~2.2)lcu | - |
| Mechanical life (times) | 7000/5000/4000 | 3000/1000 |
| Enclosure protection grade | IP44 | IP44 |