Let’s discuss the issues with the water pump
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Model parameters of the pump: Flow rate Q = 210 M3/h, head = 50 meters, efficiency = 86%. Motor used: Model YKK5001-4; motor power = 500 KW, rated current = 35.71 A. Problem: The current exceeds the rated value as soon as the motor is started. Please analyze the reason
We have a pump with a flow rate of 500 cubic meters, a head of 80 meters, and a motor of 250 KW; the current consumption is around 15 A. It’s also 10 KV voltage, right? Theoretically, there’s no need to use such a large motor for this pump. Also, take a look at the no-load current of your motor. Check whether the pump itself vibrates excessively, has dead spots, or experiences axial movement and other issues.
Was the pump outlet valve opened too much at startup, causing the pump to start under overload?
It’s also related to the piping; please send over a piping diagram so that everyone can take a look at it
The original poster is amazing! With a flow rate of 210 M3/h, a head of 50 meters, and an efficiency of 86%, the shaft power required is only 33 KW. So why is a 500 KW motor used, resulting in overcurrent? :o
Has the poster provided incorrect data? Please verify it, as this will help everyone analyze the reasons
Could you describe the process of operation?
A 500kw motor is quite intimidating.
It should be around 50KW, I guess. But 50KW seems a bit low again; haha, I’m not sure
How can your pump use such a motor! Could the poster have incorrect data?
The motor selected is too large, causing overcurrent? It should be carefully checked
Based on the parameters provided by the poster, it should be possible to calculate the rated power of the pump.
Possible causes: 1. The opening degree of the pump outlet valve is too large or too small. 2. Whether the bearings of the pump and motor are in good condition. 3. Whether the coupling between the pump and motor is functioning properly. 4. Whether foreign objects have been drawn into the pump
There seems to be an issue with this parameter. How can the power be this high!