What causes sudden fluctuations in current when starting a 10KV motor?
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Our company has set up a new dedicated line. On December 5, a separate commissioning of the 10KV high-voltage motor (1400KW) was carried out with the load disconnected; during startup, there were sudden fluctuations in current and abnormal noises from the motor, which led to an emergency shutdown. I’m asking fellow sailors: what could be the reason for this?
What kind of motor is it, and what is the starting method? ?
For asynchronous motors, check whether there are any broken bars in the rotor bars; for synchronous motors, check whether there are any open circuits in the rotor’s damping rings.