Siemens Automation and Drives (A&D) is introducing a new range of IEC low-voltage motors with aluminium housings. The new 1LE1 series motors are offered in the efficiency classes EFF1 and EFF2, with the EFF1 motors achieve their high efficiency through the use of copper rotors. The motors therefore have an extremely compact design and are especially suitable for applications with pumps and fans.
The new 1LE1 motors with aluminium housings are rated from 750W to 18.5kW and are available in frame sizes 100 to 160. The EFF1 motors have up to 40 per cent lower power losses compared with conventional motors.
Designed to be easy to install and modify in every frame size, the motors feature a terminal box is easy to access and a housing architecture that allows adaptation to the most varied applications. The terminal boxes can be rotated in 90-degree steps, and the motor feet can be flexibly mounted, depending on the motor version. An encoder, brake and external fan can be added with minimum effort. The flexible housing architecture results in a reduced variety of parts, simplifying inventory management.
Thanks to the use of copper rotors, the high-efficiency EFF1 motors are extremely compact and have the same housing dimensions as the EFF2 version of the same size. High-efficiency motors can therefore be retrofitted without changing the machine design.
In addition to the standard motors, models with increased power output are available. With the same shaft height, they offer a full performance class more than the comparable standard motor. The versions with increased output power are also offered in the efficiency classes EFF1 and EFF2.
Further information can be found at www.siemens.com/low-voltage-motors.