The efficiency of the motor is the ratio of the active output power of the motor to the active input power. Efficiency is expressed as a percentage

　　(1) There are two methods for measuring efficiency:

　　a. Direct measurement method; measuring the output and input power of the motor under test to determine the efficiency

　　6. Indirect measurement; measurement and analysis of the loss of the motor under test to determine efficiency.

　　If there are no other regulations, the guaranteed value of efficiency should be understood as the efficiency measured by "indirect method".

　　(2) Conversion of temperature at the time of measurement efficiency. When the efficiency is measured by the direct method, the temperature of each part of the motor should reach the actual stable temperature, and the temperature of the cooling air is also converted to 25 °C.

　　Dezhou Ruige Motor Co., Ltd. is a three-phase asynchronous marine motor manufacturer integrating scientific research, manufacturing, sales and service. The company's main products are: YH marine motor, YH marine single-phase motor, YZ-H series marine lifting three-phase asynchronous motor, JZ2-H series marine lifting three-phase asynchronous motor, Y series three-phase asynchronous motor, Y2 series three-phase Asynchronous motor, YD variable pole multi-speed three-phase asynchronous motor, YT series dedicated fan motor, YVF frequency conversion series three-phase asynchronous motor.