440 V use hoti hain. This is confusing statement. In India, the secondary side of a distribution transformer is mostly 433V no load. But motors are mostly rated for 415 V and not 440V. This difference between 433V and 415 is supposed to take care of transformer internal voltage drop(from no load to operating load) and further voltage drop in the LV feeding cable from Transformer LT bushing till motor starter and then from motor starter to motor terminal.
@electricalpracticalfunda Жыл бұрын
Actually sir at motor name plate voltage rating is mentioned 415V +10% and -10 % .so the voltage is given in range not exactly 415 V.Practically also when we run a motor we do not get exact voltage . Somehow I agree with your statement that motors are mostly rated for 415 V but it is + - 10%. and it's a general statement and we speak the Trafo output Voltage i.e 440V .But actually it should be 415 V +-10%. Thank you sir 🙏 for your response.