As a manufacturer of both variable speed drives and AC motors, Siemens has a superior understanding of their collective operation, application and performance. Siemens Inverter Duty Motors are the result of an extensive testing program to establish guidelines for their typical utilization. Siemens totally enclosed inverter duty motors are rated for continuous operation in a 40ºC ambient at altitudes up to 3300 feet above sea level. These rugged, high efficient motors exceed EPAct Efficiency standards and are manufactured for Severe Duty and Hazardous Duty adjustable speed drive applications such as centrifugal fans, pumps, blowers, mixers, machine tools, chemical processing, mining, foundry, pulp and paper, waste management and petrochemical. For specialized applications, such as non-standard ambient, intermittent or high duty cycles, high constant horsepower speed ranges or other special conditions, please consult Siemens.

RGZESDI		RGZZESDI
	Zero to Base Speed - VT		6:1 Variable Torque or
	10:1/6:1/4:1 - CT		6:1 Constant Torque
			Class I, Group D
			Class II, Groups F&G, Div 1
Enclosure	Severe Duty - TEFC	Enclosure	Hazardous Duty
Efficiency	High (EPAct)	Efficiency	High (EPAct)
HP Range	1-400	HP Range	1-200
Number of Poles	2/4/6/8	Number of Poles	2/4/6/8
Frame Size	140-440	Frame Size	140-440
Power	3-Phase	Power	3-Phase
Frequency	60 Hertz	Frequency	60 Hertz
Standard Voltage	460 & 575	Standard Voltage	460 & 575
Service Factor	1.15 (SW), 1.0 (VFD)	Service Factor	1.0
Electrical Design	NEMA B (except derates)	Electrical Design	NEMA B (except derates)
Insulation Class	F with B Rise @ 1.0SF	Insulation Class	F with B Rise @ 1.0SF
Frame Material	Cast Iron	Frame Material	Cast Iron
Catalog Page	Product Page	Catalog Page	Product Page

RGZESDI		RGZZESDI
	10:1 Constant Torque		6:1 Variable Torque or
			6:1 Constant Torque
			Class I, Groups C&D
			Class II, Groups F&G, Div 1
Enclosure	Severe Duty - TEFC	Enclosure	Hazardous Duty
Efficiency	High (EPAct)	Efficiency	High (EPAct)
HP Range	1-350	HP Range	1-200
Number of Poles	2/4/6/8	Number of Poles	2/4/6/8
Frame Size	140-440	Frame Sizet	140-440
Power	3-Phase	Power	3-Phase
Frequency	60 Hertz	Frequency	60 Hertz
Standard Voltage	460 & 575	Standard Voltage	460 & 575
Service Factor	1.15 (SW), 1.0 (VFD)	Service Factor	1.0
Electrical Design	NEMA B (except derates)	Electrical Design	NEMA B (except derates)
Insulation Class	F with B Rise @ 1.0SF	Insulation Class	F with B Rise @ 1.0SF
Frame Material	Cast Iron	Frame Material	Cast Iron
Catalog Page	Product Page	Catalog Page	Product Page

RGZESDI
	1000:1 Constant Torque
Enclosure	Severe Duty - TEFC/TEBC
Efficiency	High (EPAct)
HP Range	1-400
Number of Poles	2/4/6/8
Frame Size	140-440
Power	3-Phase
Frequency	60 Hertz
Standard Voltage	460 & 575
Service Factor	1.15 (SW), 1.0 (VFD)
Electrical Design	NEMA B (except derates)
Insulation Class	F with B Rise @ 1.0SF
Frame Material	Cast Iron
Catalog Page	Product Page