Answer / radhakrishnan

QDC CT is using to manage the AVR according to load change. SCM CT is using to manage the excitation energy requirement during short circuit.

Answer / r p pandey

SCM ct are connected in field exciter circuit through SCM bridge, when high current encrease in main circuit then it protect our generator by controling excitation.

Answer / hitesh gavaniya

SCM CT is a normal ct , which is connected with generator output terminal , and CT's Terminal are connected with AVR . Depending on the load on the generator , the current increases & Accordingly SCM CT gives the input to the AVR so as to develop the required field to generate the same load without any dip in the voltage.

sir, Is their any measuring unit of knoking? please explian?

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