Motor Frame Sizes Provide Enhanced Energy Efficiency

Siemens Drive Technologies is supplementing its energy-efficient IEC lowvoltage motors with two new frame sizes for the aluminum line and has also increased power ratings on its cast-iron motors. Siemens now offers the threephase asynchronous motors of the 1LE1 series in frame sizes 80 and 90 as well as 100 to 160. These new motors with aluminum housings are available as 2- and 4-pole versions. Their rotatable terminal box can be set to any angle between 0° and 360°, allowing the motor to be connected from any direction and facilitating installation where space is limited. In the case of the cast-iron 1LG6 series, extension of the 315 frame increases the power rating to 315 kW. These motors are available as 2-, 4-, 6- and 8- pole versions. All motors are available in efficiency class IE2 and meet the requirements of EC Commission Regulation 640/2009. The new cast iron motors are also offered in efficiency classes IE3 and NEMA Premium.

As featured in Womp 2010 Vol 10 -