Issues with motor stator temperature indication
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Recently, some compressors require two thermal resistors for temperature measurement in each phase of the motor stator. For pumps or motors, the circumstances in which temperature monitoring is necessary depend on the motor’s power and voltage levels as well as the type of compressor. For very large pumps, whether it is necessary to monitor the temperature of the motor shaft depends on certain standards The more detailed, the better. Thanks!
You can check the API standards; there are requirements. It’s not mandatory.
For motor temperature measurement, there is generally one measurement point for each phase winding, plus the bearings at the front and back, resulting in a total of 5 temperature measurement points. Generally, 160KW and above are available! The motor in question requires two temperature measurement points per phase; it seems to be a rather important motor!