Arc protection is a reasonable supplement to the traditional microcomputer protection, which can effectively protect the faults and dead zones that cannot be protected by the traditional microcomputer protection. It can be used as special busbar protection for medium and low voltage switchgear. Arc protection system can greatly improve the safety of personnel and reduce the damage of equipment in case of dangerous system failure, which can greatly shorten the outage time.

Electric equipment failure is accompanied by electric arc phenomenon. Arc light is the energy source that leads to serious damage of electrical equipment. Shortening the duration of arc light as far as possible will essentially avoid the damage of electrical equipment. The protection action criterion of arc protection device can be set according to the field application, which can be divided into arc light intensity criterion, arc light intensity and fault current double condition criterion.

It only takes 5-7ms for arc light protection system to detect the tripping output of arc relay, which is much faster than that of traditional relay protection. And it can accurately locate the fault point at the first time when the arc fault occurs.

The main control unit and arc collector of arc protection device can form a comprehensive arc protection system, or they can be used separately. They can be configured into an economical arc protection system. The main control unit, arc collector and arc sensor can be added at any time, and the system protection logic can be flexibly set to meet the actual needs of the site.