How to measure temperature rise during reduction

1) Thermometer method: This is the easiest way to measure temperature directly, and alcohol thermometers are usually used for measurement.During the measurement, a thermometer can be brought close to the bearing surface or stator core to be measured to read the temperature indication.When measuring the winding temperature, insert the thermometer into the lifting screw hole of the reducer.The measured temperature value is the winding surface temperature, and the hot spot temperature difference (grade 10 insulation) is the hottest spot temperature of the reducer winding.Subtract the ambient temperature from the reduction temperature to obtain the increase in reduction temperature.

2) Resistance method: The resistance value of the metal wire increases with the increase of temperature.Within a certain temperature range, there is a certain functional relationship between resistance value and temperature.Using this principle, the temperature can be measured by measuring the resistance value of the winding, which is called resistance measurement.When using the resistance method, first measure the cold DC resistance RI of the winding with a bridge, and record that the ambient temperature (room temperature) at that time is very small.When the reducer is running for a period of time, then measure the thermal DC resistance of the winding, which can be obtained by substituting the formula.