12
Feb
How To Measure Motor Winding Resistance. 2 Circuits 3 Leads Each If the motor has 2 independent circuits of 3 leads each it is either a part-winding start or a 2-winding motor. Accurately measuring the resistance. Maximum insulation resistance should be measured with 500 V DC with the windings at a operating temperature of 80. Turn on the digital multimeter.
Could be a loose connection disconnect the links check all terminals measure the resistance of each individual winding preferred cold and they should be near enough the same on a cheapo meter. Resistance involving two winding and winding framework ought to be more than. So you can know the condition of yo. The resistance setting is designated by the capital Greek letter omega. Our 4-wire resistance measurement uses Kelvin clamps for improved accuracy. In this case the resistance measured will include the resistance of the leads from the measurement device to the DUT.
Resistances Of Three Phase Motor Winding needs to be the same - 5.
Maximum insulation resistance should be measured with 500 V DC with the windings at a operating temperature of 80. For a 15Kw you will be down in the less than 5 Ohms range. Transformer winding resistance measurements are obtained by passing a known DC current through the winding under test and measuring the voltage drop across each terminal. If the resistance is less than 5 ohms use a milli-ohm meter or bridge device. In this method of measurement of winding resistance the test current is injected to the winding and corresponding voltage drop across the winding is measured. Our 4-wire resistance measurement uses Kelvin clamps for improved accuracy.