UL Motor Efficiency Standard

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40 Years of NEMA Premium | IE3 | UL Motors Manufacturing | Kuo Shuay

Kuo Shuay, since 1988, is a professional foot and flange mounted AC Motor manufacturer based in Taiwan.

At KUO SHUAY, all cast iron and aluminum frame AC electric motors are manufactured with UL certifications, which include efficiency tests, torque-speed curve tests, temperature rise tests, circle diagram tests and more. And their motors are used in food machine, CNC, treadmill, blower, pump, stacker, electric carrier and gate operator industries.

Kuo Shuay has been offering customers UL certified AC motors, both with advanced technology and 40 years of experience, Kuo Shuay ensures each customer's demands are met.

UL Motor Efficiency Standard

Motor Efficiency Ratings
Motor Efficiency Ratings

The UL efficiency standard and the test method base on UL1004-1. The tested motor should meet both minimum efficiency requirements and the nominal efficiency. The other standard that is commonly used is the IEC standard. According to IEC 60034-30-1 Standard, the efficiency level of three-phase induction motor has been defined as IE1 (Standard), IE2 (High), IE3 (Premium) and IE4 (Super Premium). Compared to IE1 motor, the materials and design are both been upgraded in IE3 motor, which becomes more durable and energy-saving.

Energy Saving Example

10 pieces of IE3 motors with specification of 11kW 4P 220V 60HZ, run 12 hours a day for 5 years (each year run 365 days). The electric fee is NT$5/kWh (USD $0.17 /kWh)

Energy Saving Example

Change motor from IE1 to IE3, USD$1900 will be saved after five years
Reference:
Energy Saving Example

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