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Testing of Circuit Breakers

Indirect Testing of Circuit Breaker

Indirect Testing of Circuit Breaker: With the increase in the breaking capacity of the HV circuit breakers, it has become uneconomical and unpracticable to increase the short-circuit capacity of testing station. It is consequently necessary to utilize some form of Indirect Testing of Circuit Breaker. The important methods of Indirect Testing of Circuit Breaker are: …

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Circuit Breaker Testing Procedure

Circuit Breaker Testing Procedure: A preliminary check up of various equipment is made before the actual Circuit Breaker Testing Procedure commences. The correct values of resistance and reactance coils are inserted as per the magnitude of the short-circuit current. Proper settings of transformers are made. The measuring circuits are connected and oscillograph loops are calibrated. …

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Circuit Breaker Analyzer

Circuit Breaker Analyzer: Short Circuit Generator: This is of a special design having very low reactance in order to give the maximum short-circuit output of the Circuit Breaker Analyzer. The leakage reactance is reduced by reducing the depth of slots and the length of coil ends. The terminals are brought to a board where different …

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Simple Testing Station

Simple Testing Station: In these Testing Station the short-circuit power is supplied by specially designed short-circuit generators, driven by induction motors. A simplified diagram of such a testing station is shown in Fig. (18.1). The magnitude of the test voltage and the short-circuit current can be selected within wide limits by adjusting generator excitation and …

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