Measure the resistance of the energy storage motor

Why do we measure resistance values?

Measuring resistance values allows you to confirm the quality of the motor windings, assess the thermistor's performance, and evaluate the connection quality between components.

What is a resistance meter used for?

A resistance meter is used to measure the resistance of the windings, thermistor, and welding quality of the parts. By measuring the winding inductance, it is possible to check the winding balance between the phases. Unbalanced phases will result in uneven motor rotation and cause the motor to lose consistency with the motor driving.

How do you calculate minimum resistance?

Minimum resistance is calculated as follows: Rm = kV + 1 where: (Rm is minimum resistance to ground in Meg--Ohms and kV is rated nameplate voltage defined as Kilovolts.) Example: For a 480VAC rated motor Rm =1.48 meg--ohms (use 5 M). For a 4160VAC rated motor Rm = 5.16 meg--ohms.

What is a thermistor resistance meter?

The resistance of the thermistor is measured to confirm that the correct parts are properly installed. A resistance meter is used to measure the resistance of the windings, thermistor, and welding quality of the parts. By measuring the winding inductance, it is possible to check the winding balance between the phases.

How to measure insulation resistance?

• Set the insulation tester to the low ohms range. • Measure the resistance across each set of contacts. The reading should be close to zero. If it is higher than 0.1 ohms, then that set of contacts needs to be replaced. 3.

What is the minimum resistance of motor winding insulation?

Minimum resistance of motor winding insulation is 5 Meg ohms or the calculated minimum, which ever is greater. Minimum resistance is calculated as follows: Rm = kV + 1 where: (Rm is minimum resistance to ground in Meg--Ohms and kV is rated nameplate voltage defined as Kilovolts.) Example: For a 480VAC rated motor Rm =1.48 meg--ohms (use 5 M).