Electrical Engineering ⇒ Topic : Reactors

Reactors

The purpose of reactors incorporated in circuit breakers is to limit the short-circuit current flowing to a safe value thus providing protection of instrument. They consists of large coils of high self-inductance and very low resistance.

The reactors are of two types namely :

• Open type
• Oil immersed type ...... used for voltages above 33 kV.

Reactors in a power system can be located

(i) in series with generators

(ii) in series with feeders

(III) WO in bus-bars (in ring system or in tie bar system).