asked by
Describe with neat circuit diagram the method of measurement of power in a High voltage, high current a.c circuit.

Your answer

Thanks for your contribution. Feel free to answer this question. Please avoid short answer. Your answer is most welcome. Be genuine.

Upload image or document:

Your name to display (optional):
Privacy: Your email address will only be used for sending these notifications.

1 Answer

0 votes
answered by

Circuit diagram: 



The primary winding of P.T is connected across high voltage side and secondary winding is connected to pressure coil of low range wattmeter. The high voltage is proportionally converted to low volt within the range of pressure coil of wattmeter. The primary winding of C.T is connected in series with load which carries high load current. And the secondary winding of C.T is connected to current coil of low range wattmeter. The high load current is proportionally converted to low current which within the range of current coil of wattmeter The real power consumed in the load can be calculated the following formula is used Real power consumed = reading of wattmeter x ratio of C.T x ratio of P.T

Welcome to Q&A site for electrical and electronics engineering discussion for diploma, B.E./B.Tech, M.E./M.Tech, & PhD study.
If you have a new question please ask in English.
If you want to help this community answer these questions.