Motor Series 1R.5

As a result of their modular design, the 1R.5 slipring rotor motors (US: wound-rotor motors) can be produced with various cooling systems. This means that the motors can be flexibly adapted to the customers's application.
The enclosed slipring compartment – located inside the NDE bearings – guarantees a high degree of protection for the complete motor, i.e. for the motor and slipring compartment.

Motor series 1R.5 - Customer benefits

Features	Customer benefits
Compact design as a result of a high power density and inboard slip ring compartment	Low envelope dimensions Low space requirement Low weight
Modular cooling system design	Can be integrated into every plant and system configuration
Low noise	High demands of safety at work legislation are fulfilled
Terminal box mounted to the motor enclosure The cover is de-coupled from the electrical connections	Service and installation friendly
Motors are either available in a version where the brushes are permanently in contact with the sliprings or a version with brush lifting device	Brush operating mode can be optimally adapted to the process conditions

Motor series 1R.5 - Technical data overview

Brief overview
Motor type:	Slipring rotor
Water-cooled motors:	1RU5 type series
Air-cooled motors:	1RR5 type series
Shaft heights:	400, 450, 500, 560, 630, 710, 800, 900 mm
Power range:	0.3 to 8 MW
Rated voltages:	3.3 - 11 kV
Degree of protection:	IP55
Cooling type:	IC 611, IC 81 W, IC 01
Type of construction:	IM B3 (IM 1001)
Bearings:	Roller bearings (up to SH 710), sleeve bearings (from SH 800)
Regulations/Standards:	IEC, EN

Motor series 1R.5 - typical applications

• Cement mills
• Pumps