Both PTC and PT100 (temperature sensors PT100 for windings & Bearings)are two most-commonly utilized temperature-measuring elements in the context of motor product temperature testing. In contrast, PTC can be conceptualized as a temperature-activated switching element, whereas PT100 is a sophisticated temperature-monitoring device capable of displaying dynamic temperature readings and triggering a switch at a specified threshold. Given the close alignment between the characteristics of PT100 and the insulation level of the motor winding, it is employed in conjunction with the winding temperature measurement and bearing temperature measurement of the electric motor.
In the selection and installation of PT100, particular attention should be paid to the following key points in conjunction with the characteristics of the motor product.
In order to prevent the influence of motor voltage and other environmental factors on the temperature measurement accuracy, it is necessary to add a shielding layer and reliably ground the PT100 in order to prevent external factors from affecting the measurement results.
When installing a PT100 sensor, one of the main considerations is its placement. The sensor should be installed in the core slots of the motor windings. This positioning is critical as it ensures that the temperature measured closely matches the actual temperature of the motor. If the sensor is not placed correctly, it can result in inaccurate readings, which can cause the motor to fail prematurely or operate inefficiently.
Another important factor to consider is the wiring of the PT100 sensor. It is critical to maintain consistent wire lengths throughout the installation. Variations in wire length can cause changes in resistance, which can result in erroneous temperature readings. Therefore, careful attention should be paid to the wiring layout to ensure that the length remains consistent throughout the installation.
In addition, it is recommended to use high-quality insulated wires to prevent interference from external electromagnetic fields, as this may affect the performance of the sensor. Proper insulation also protects the wires from potential damage caused by heat or mechanical stress.
Finally, PT100 sensors require regular maintenance and calibration to ensure their long-term accuracy. Regular inspections can help identify any discrepancies in temperature readings so that adjustments or replacements can be made promptly.
To conclude, when installing PT100 sensors on three phase asynchronous ac motors, it is essential to adhere to the following guidelines: proper placement, consistent wiring lengths and regular maintenance. By following these instructions, you can guarantee that your PT100 sensors operate efficiently, provide reliable temperature monitoring and enhance the overall performance of your motor.
Post time: Nov-27-2024