Indoor AC high-voltage load switch

Indoor AC HV load break switch-fuse combination apparatus is developed and designed based on international technology and national power supply requirement, it passed all type tests and trial-operation inspections. The apparatus conforms to IEC420: AC LOAD BREAK SWITCH AND FUSE COMBINATION APPARATUS(1990EDITION) and GB3804: 3-63KV AC HV LOAD BREAK SWITCH VOLUME AND LIGHT WEIGHT. Compared to international product it keeps up with technical level with small volume and light weight.

General:

The product realizes three working positions: power making. power breaking and earth. It applies to power system of rated voltage 6-12kv, 50/60HZ breaking load current ober load current and short-circuit current.It is applicable in ring main unit and prefabricated substations as well as 12kv line and power distribution system.

Service Environment

The altitude: under 1000M.
The ambient temperature:-25℃-+40℃
The relative humidity of air: monthly≤90%, daily≤95%\
Ampitude: Earthquake degree 8
Application occasions should free from fire, inflammables, explosives,corrosives and severe vibration

Key Feature

Working principle based on electromagnetic principle
Remote control, remote switch function
Quick response to circuit failure in a short time, simple structure, easy installation, small size

Technical Data

Name	Unit	Data
Rated voltage	KV	12
1min frequency voltage	KV	42	48
Rated Current	A	400	630
4S thermal current	A	12.5	20
Dynamic current (peak)	KA	31.5	50
Rated breaking current	A	400	630
Short circuit close current	KA	31.5	50