Special compressor drives

Focused power in the smallest space

1RA3 motors are extremely compact high-voltage motors - with a high power yield.

The two-pole motors have been especially designed to drive high-speed compressors.

Special compressor drives – customer benefits:

Features	Customer benefits
Optimized for the highest power density	Extremely small envelope dimensions and weight
MICALASTIC high-voltage insulation utilizing VPI technology and proven over many years; it ensures uniform temperature distribution in the winding (two-sided ventilation system)	High degree of reliability and long lifetime of the insulation system
Rugged and stiff mechanical components	Highest vibration quality
Uniform and low bearing temperatures	High degree of availability through a reliable bearing system

Special compressor drives - Technical data overview

Brief overview
Type series:	1RA3
Power range:	250 kW to 1200 kW
No. of poles:	2
Rated voltages:	2 - 6.6 kV
Frequencies:	50 Hz, 60 Hz
Shaft heights:	315, 355, 400 mm
Degree of protection:	IP 23
Cooling type:	IC 01
Type of construction:	IM B3, IM B5, IM B35
Rotor winding:	Die cast aluminum, optional copper bars
Regulations/Standards:	IEC, EN

Special compressor drives - typical applications

Compressor