What are the main reasons for motor overheating during the individual testing of a pump?
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What is the maximum allowable temperature when testing a motor alone?
If the selection is fine, then it’s a problem with the equipment or installation.
Is the motor compatible?； Motor quality (including motor bearings ； Assembly clearance ； self-damage) ； Have the process parameters of the pump changed, etc.?
What temperature are you referring to? How is a single-unit trial run carried out?
What’s the temperature there? Bearing or stator~~
The high temperature at the bearing end cover is likely due to a problem with the internal bearings. . .
The temperature of the bearing end caps is high; the single-unit trial operation involves circulating the pump through the pipes for two hours.
It might be in a cycling mode; the head could be low while the flow rate is high, resulting in overload. You can check the performance curve.