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VARC Circuit Breakers

Concept

About Circuit Breakers

Experimental Work

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Technology

VARC Circuit Breakers

Our circuit breaker technology is called the VSC Assisted Resonant Current (VARC) circuit breaker. It relies on a VSC (Voltage-Source Converter) which excites an oscillation in an LC-circuit. The time to achieve a sufficient gap between the mechanical contacts in the VI is at least one millisecond even if a very fast-acting actuator is utilized …

Concept

VARC Circuit-Breaker Technology, Electrical Part Scibreak’s concept, VSC Assisted Resonant Current (VARC) circuit-breaker (CB), uses a mechanical vacuum interrupter (VI) together with auxiliary circuitry that creates a current zero-crossing in the internal arc during contact separation. This is a known principle with the following characteristics: 1 …

About Circuit Breakers

All power transmission systems depend on secure and reliable protection systems. In case of short-circuit in any transmission facility like over-head line or cable or in the load, the faulty component must be immediately isolated to preserve the capability of the whole transmission system to operate.

Experimental Work

Experimental Results – Mechanical Parts The actuator arrangement with the vacuum interrupter has been tested in the laboratory. An illustration of this prototype is shown here. The total weight of the Thomson armature disk, the pulling rod, the over-travel mechanism and the moving contact in this case was 3.5 kg.

Contact

Visit and delivery:
Scibreak AB
Skarprättarvägen 7, lokal 14
176 77 Järfälla
Sweden

info@scibreak.com