The problem of low insulation resistance of stainless steel submersible pump
Low insulation resistance of stainless steel submersible pumps is a common problem. The possible causes and corresponding treatments are as follows:
1. Possible reasons
Power cable or signal cable problem:
The end of the power cable or signal cable may be submerged in water during installation, or may be damaged during use and allow water to enter.
This causes moisture inside the motor, which lowers the insulation resistance.
Seals are worn or aged:
Seals such as mechanical seals or O-rings may wear out due to long-term use, or lose their sealing effect due to material aging.
This can cause external moisture to seep into the interior of the motor, lowering the insulation resistance.
Moisture inside the motor:
In addition to the above reasons, the inside of the motor may also get damp due to other ways (such as loose sealing, humid use environment, etc.).
The insulation performance of motors affected by moisture will be significantly reduced.
2. Treatment method
Replace the cable or signal line:
Check whether the power cord or signal cable is damaged or soaked in water. If found, replace it with a new one in time.
After replacement, the motor should be dried to remove internal moisture.
Replacing seals:
Check whether seals such as mechanical seals and O-rings are worn or aged. If found, replace them with new ones in time.
When replacing the seal, make sure it is installed in place and the seal is tight.
Drying motor:
Motors with low insulation resistance due to moisture should be dried.
When drying, appropriate heating equipment should be used and the drying temperature and time should be controlled to avoid damage to the motor.
Strengthen sealing measures:
After replacing the seals and drying the motor, the sealing measures of the submersible pump should be checked and strengthened.
Make sure that all sealing parts are installed correctly and tightened reliably to prevent external moisture from penetrating into the motor again.
Regular inspection and maintenance:
Regularly conduct insulation resistance tests and other related inspections on submersible pumps to promptly discover and deal with problems such as low insulation resistance.
At the same time, strengthen the daily maintenance and upkeep of submersible pumps, such as cleaning the pump body, checking cables and seals, etc., to extend the service life of the submersible pump and ensure its normal operation.
In summary, the problem of low insulation resistance of stainless steel submersible pumps needs to be inspected and dealt with from many aspects. Through the implementation of correct measures, the problem of low insulation resistance can be effectively solved and the normal operation of the submersible pump can be ensured.
