An "energy efficient" motor produces the same shaft output power (hp) as a standard-efficiency motor while using less input power (kW).
The efficiency class codes (IE codes) have been introduced as classification codes that describe the power conversion efficiency of electrical motors.
According to the IEC 60034-30-1, the IE efficiency classes are:
IE1 = Standard Efficiency
IE2 = High Efficiency
IE3 = Premium Efficiency
IE4 = Super Premium Efficiency
No. Energy-efficient motors have the same maintenance requirements as standard motors.
Energy efficient motors are available for sizes ranging from 1 to 500 hp, speeds of 3600, 1800, 1200, and 900 rpm, and three-phase voltages of 208, 230, 460, 575, and higher.
An energy-efficient motor will result in lower energy costs when compared with a rewound standard-efficiency motor. Its cost-effectiveness will depend on the hours operated, motor efficiencies, utility rates, and the difference in cost between the rewind and the energy-efficient motor.
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Yes. The motor certification is to be renewed every year. It will appear on your account which motor's certificate are expired and need to be renewed.