Review on Supco M500 Insulation Tester: Reliable Megohmmeter for Accurate Measurements, Includes Soft Carrying Case, 0 to 1000 Megohms by Ranjit Ghosh
Works fine but read the manual
I am using this to help diagnose the refrigeration compressor. A low Megger value does not mean that the compressor is defective. This can be due to moisture or carbon contamination in the system. You should flush the system and change the coolant and oil to be sure. Read the included instructions to learn how to use this commonly abused tool. Let the system blow a fuse from time to time, this gauge will help.
- Weight
- Upgradable
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