The Siemens Drive Technologies Division is supplementing its energy-efficient IEC low-voltage motors with two new frame sizes for the aluminium range and is also increasing the power rating on the rugged cast iron range of motors. All motors are available in efficiency class IE2 and are thus claimed to meet the requirements of EC Commission Regulation 640/2009. The new cast iron motors are also offered in efficiency classes IE3 and NEMA Premium.
The company now offers the three-phase asynchronous motors of the 1LE1 series in frame sizes 80 and 90 as well as 100 to 160. The new motors with aluminium housing are available as 2 and 4pole versions. The rotatable terminal box can be set to any angle between 0° and 360°. This means that the motor can be connected from any direction, facilitating installation especially where space is limited, and saving time. The 1LE1 series is available from a rating of 550 watts in efficiency class IE2.
In the case of the rugged 1LG6 series of motors, the extension of the 315 frame increases the power rating to 315kW. The cast iron motors are available as 2, 4, 6 and 8 pole versions. With a service factor of 1.15, they offer sufficient thermal reserves for load fluctuations. As well as efficiency class IE2, the new motors can also be ordered in the energy efficiency classes IE3 and NEMA Premium. NEMA Premium corresponds to the efficiency requirements that will come into force in the U.S. from December 19, 2010.
Low-voltage motors from the company are offered universally in IE2 for the performance range 750W to 375kW, and they thus meet the requirements of EC Commission Regulation 640/2009.
