What must be considered when measuring resistance of a winding on a High Voltage Delta or Low Voltage SEW Eurodrive Motor?

When measuring the resistance of a winding on a High Voltage Delta or Low Voltage SEW Eurodrive Motor, it's essential to consider the effect of temperature on resistance readings. As temperature increases, the resistance of the windings can also increase due to the properties of the conductive materials used. Therefore, the resistance value displayed by the ohmmeter may reflect the temperature at the time of measurement, which could differ from the resistance at the motor's nominal operating temperature.

The assertion that the actual resistance is 1.5 times the value displayed implies an adjustment for this temperature variance or possibly other compensating factors. This consideration allows for a more accurate assessment of the winding condition and performance, accounting for real-world operating scenarios.

Understanding this context emphasizes the need to be aware of temperature effects when interpreting resistance measurements in motor applications, which is crucial for maintenance and troubleshooting purposes in electric motor systems.