To ensure the stable operation of production equipment, the low-voltage induction motor (hereinafter referred to as the “motor”) which is the power source of such equipment is subjected to important maintenance and inspection at maintenance sites. Introduction 1.1 Present situation and problems for maintenance and inspection of three-phase motor The method did not only make the measurement possible, but also succeeded in achieving sufficient accuracy.ġ. In conventional method, it is very difficult to realize. This article describes the method of measuring insulation resistance of an operating three-phase induction motor with inverter.
#HOW TO MEASURE MOTOR WINDING RESISTANCE SERIES#
The K6CM series makes it possible to identify common motor failure by using the parameters (vibration, temperature, current and insulation resistance) it’s able to monitor. To deal with its problems, we developed the “Motor Condition Monitoring equipment (K6CM series)”. We focus on the three-phase induction motor which is used in various machines as power source and normally treated as an inspection target. This fact urged us to change our style of maintenance to a preventive maintenance by monitoring machines’ condition.
As a result, the shortage of workers and engineers will accelerate. Additionally, risks of losing business chances due to the sudden stop of machines often force maintenance personnel to focus more on the corrective maintenance. However such action has become more and more difficult these days due to shortage of workers and engineers. In most maintenance scenes, maintenance personnel will visit factories for regular maintenance and inspection. In production lines, stable operation of machines is one of the most important factors so that it is required to have scheduled maintenance at the right timing.
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