Key inspection points for high-voltage motor insulation maintenance
Schedule insulation checks based on environmental humidity, operating temperature, and start-stop frequency to avoid rigid, fixed-interval mandates.
Insulation condition is highly sensitive to environmental factors and operating modes. High humidity, dust accumulation, and frequent start-stop cycles accelerate insulation aging, making fixed-interval inspections insufficient to cover actual risks.
Record insulation resistance, polarization index, and operating temperature trends in the maintenance plan; adjust intervals based on shutdown inspection results. For motors in long-term standby, also monitor moisture protection and perform periodic run tests.
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