Fluke 438-II uses algorithms to analyze three-phase power quality as well as torque, efficiency and speed to determine system performance and detect overloaded conditions. According to the manufacturer, the power quality and motor analyzer can eliminate the need for motor load sensors. The device simplifies the process of motor-performance diagnosis by providing analysis data for both the electrical and mechanical characteristics of the motor while it is in operation. The analyzer also provides measurements to determine a motor’s efficiency (i.e., the conversion of electrical energy to mechanical torque) and mechanical power under operating-load conditions. These measures allow maintenance engineers to determine the motors' in-service operating power compared to its rated power to determine if the motor is operating in overloaded condition.
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