CIRCUIT BREAKERS:ARC SPLITTER TYPE AND APPLICATION

ARC SPLITTER TYPE

The blowouts in these breakers consist of steel inserts in the arcing chutes. These inserts are arranged so that the magnetic field induced in them by the current in the arc helps move the arc upward. The steel plates divide the arc into a number of short arcs in series. Figure 19.6 illustrates an air-break arc splitter-type circuit breaker.

APPLICATION

In general, air-break circuit breakers are suitable for the control of power station auxiliaries and industrial plants. They combine a high degree of safety with minimum maintenance. They do not require any associated equipment such as compressors. Since they have no oil, they are recommended for locations where fire or explosion hazards are feared.

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