The water pump motor experiences excessive voltage drop during startup, making it difficult to start
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When the water pump motor starts, the voltage is only 220V (with a line voltage of 380V), resulting in an excessively high starting current that prevents the contactor from engaging. How to solve it?
What is the power? A high power level requires a starter
:) Agree with the person above – high-power motors need to be equipped with soft-start devices!
Our company has 2 refrigeration units, each with a capacity of 280 KW. During startup, the voltage drop reaches 20%, with the voltage dropping from 400 to 320 – this causes a significant strain on the power grid. Soft starters have been used, but even with the startup voltage and current set at lower levels, the units still fail to start. Last time, this even caused the overload protection device to get damaged due to low voltage. I’m not sure what to do; anyone with expertise please advise. The transformer has a capacity of 1600 KVA, and the total power output is around 3000 KW