There are various Energy Standard to examine the motor efficiency worldwide. In Taiwan, we take CNS 14400 for examination. When speaking of High efficiency motor, we mean it is CNS 14400 low voltage, 3 phases, squirrel-cage induction motor.

Application:

• In order to increase the efficiency of HEV motors, not only the construction, magnets type, winding type, but also the material of Silicon Steel Lamination. Remember in the Development section, we list out 4 basic inner loss of motors. Among all loss, 35% IS FROM STATOR AND 25% IS FROM ROTOR. Motor core is a major reason for energy loss. How to decrease the loss and increase the efficiency? The easiest way is changing the material of stator rotor lamination. Most HEV motor cores adapt with material 50CS470, equal with M470-50AS in Europe and 47F280 in USA. Certainly, the price for 50CS470 is higher. But, please take consider with the long-term operation. You can image how much money you can save from the electric bill. By the way, the major type of HEV motor is PMM, Permanent Magnet Motor, and they are almost BLDC motors.

Features:

• The basic frame of high efficiency motors is exactly the same with standard motors. It’s easily to do the replacement. You can see enormous saving from the electric bill comparing the difference between them. Below is the formula to evaluate how much money you can save. The longer the motor working; the more money saving. By the way, the life time of motors is 15-20 years. High efficiency motor can keep its high efficiency for long term due to its high quality production under normal use.
• Cost = hrs x Pr x %FL x Pe x (1/ηstd – 1/ηhem)
• hrs: annual working hours
• Pr: output power (kW)
• %FL: output power (%)
• Pe: unit price of electricity
• ηstd: standard motor efficiency (%)
• ηhem: high efficiency motor efficiency (%)

Tolerance:

• We can control the tolerance to make stator smooth and accurate. Please understand the tolerance differs from different material of silicon steel lamination and design of mold. Usually, it is within 0.03mm-0.05mm.

IE3 / IE4 Efficiency:

• We are proud to claim that motors using our stator rotor passed the IE3/IE4 testing in UL laboratory. Our material is directly supplied from the top supplier, China Steel. With correct design and our rich experience on mold developing, we can guarantee the quality. We also have a subsidiary company for motor in Taiwan. We have the ability to develop new motor, and do the OEM/ODM business. As to the details, please contact us for further discussion. It would save time, if you could provide us with the electrical specification in advance.

• There are 24 types of high efficiency motors passed UL certification for customers’ options. Those motors are IE3 / GB2 / Premium grade. The Efficiency can reach 91.7% (Standard according to CNS 14400:2012) at highest. Among them, the biggest Horse Power is 10HP, 4P/2P depends on the application, 50-60Hz. Those motors are fit for IEC frame number. You can find the comparison table of IEC / NEMA / JEM frame number in our website.