This guide explains troubleshooting steps and causes for abnormal heating in Oriental Motor AC motors, covering voltage checks, capacitor connections, load…
This document serves as a troubleshooting guide specifically for the symptom of abnormal heating in Oriental Motor AC motors. It outlines potential causes such as incorrect voltage specifications, improper capacitor connection, overloading, or exceeding rated operating conditions.
The guide provides detailed instructions on how to verify these issues, including checking motor nameplates and using multimeters to measure input voltages at specific test points. It also discusses the impact of repeated start-stop cycles and environmental factors like high ambient temperatures on motor heating. This manual is written in Chinese.
The motor surface temperature should be below 90°C; exceeding this may degrade insulation and reduce bearing life.
Motors with built-in thermal protection devices may trigger the protector and stop operation if the temperature exceeds limits.
Repeated starting causes large currents to flow, which leads to increased heat generation.