Inverter Duty Motors

Siemens Low Voltage IEC motors feature the future-oriented insulation system Durgnit IR 2000 (IR= Inverter Resistance). The Durgnit IR 2000 insulation system is made of high-quality enamel wires and insulating materials in conjuction with a resin impregnation that does not contain any solvents. The motors can withstand operation with all converters that have IGBT transistors. This allows all our standard IEC LV motors to be operated under variable speed drives with voltages below to 500V +5%. Our specially developed motors with special insulation for operation up to 690V +5% reduce the cost and space utilized with sinusoidal and dv/dt filters.

Standard Motors Overview

Variable Speed Motors
	1LA - 1LG		1LA - 1LG
	Standard Insulation < 500 V +5%		Special Insulation < 690V +5%
Frame Size	56 -450	Frame Size	56 - 450
No. Poles	2, 4, 6,8	No. Poles	2, 4, 6, 8
Power Range	50Hz: 0.09 - 1000 kW	Power Range	50Hz: 0.09 - 1000 kW
Voltage / Frequency	460V @ 60 Hertz 230/400 @ 50 Hertz	Voltage / Frequency	460V @ 60 Hertz 230/400 @ 50 Hertz
Insulation	Class F	Insulation	Class F
Bearings	Ball	Bearings	Ball
Protection	IP55	Protection	IP55
Terminal Box	Aluminum Cast Iron > 250 Frame	Terminal Box	Aluminum Cast Iron > 250 Frame
Paint	1LA  - "Worldwide" finish 1PQ,1LG,1LA8 "Standard" finish RAL 7030	Paint	1LA  - "Worldwide" finish 1PQ,1LG,1LA8 "Standard" finish RAL 7030