LZZBJ9-10A4(C2)G,GIS12-t,LZZB8-10D7,4MA72RZI-10 parameter table(5A), this product has a rated primary current of 50A, a rated voltage of 7.2-24kV, and optional secondary currents of 5A, 10A, 15A, 20A, 25A, and 30A. The rated short circuit current is 25kA/1s or 45kA/2s, and the total core factor does not exceed the maximum coil number.
This manual describes the 8BK20 medium‑voltage switchgear equipped with withdrawable circuit‑breakers. It covers application areas, safety concepts, technical data, dimensions, installation, shipping, and the mechanical and electrical design of the equipment.
Key sections include features such as interlocking and IP protection, detailed electrical data (rated voltage, short‑circuit current, busbar current), mechanical dimensions, climate class suitability, and procedures for moving the withdrawable section with a central service truck. This manual is written in Chinese.
| Rated voltage | 7.2–12 kV |
|---|---|
| Rated short‑circuit breaking current | 50 kA |
| Width | 800 mm |
| Height | 2050 mm |
| Power‑frequency withstand voltage | 20–32 kV |
| Lightning impulse withstand voltage | 60 kV |
| Standard protection class | IP4X/IP40 |
The 8BK20 is rated for voltages from 7.2 kV up to 12 kV.
The standard protection class is IP4X/IP40.
The unit can break short‑circuit currents up to 50 kA.