How to check if a three-phase motor is short-circuited or has problems
One can use a multimeter to check the winding resistance of a three-phase motor where the normal value should fall between 0.5-10 ohms, and insulation resistance should be checked with a megohmmeter; a value below 1MΩ indicates an insulation problem. Current balance should be monitored: a difference of more than 15% is unacceptable. Measuring Winding […]
What safety precautions should you take when operating a 3 phase motor
Wear insulated gloves and protective goggles, and check the wiring for tightness. A multimeter can be used to measure the resistance, which should be less than 0.5 ohms. Cut off the power supply for at least 5 minutes before performing maintenance to avoid the risk of electric shock. Proper Wearing of Personal Protective Equipment Proper […]