Liquid cooled motor solutions

Randax® has developed new series of liquid-cooled electrical motors for power range of 45 – 500 kW. Liquid-cooled electrical machines offer a great option to air -cooled if cooling liquid is already available on the application site.  A liquid-cooled Randax® electrical machine can reach efficiency up to 50% higher than a corresponding air-cooled machine. This makes liquid-cooled Randax® electrical machines extremely compact and efficient.

Benefits of liquid cooling are high output-to-size ratio, dirt and dust cannot enter the closed cooling circuit and machine is not sensitive to surrounding air temperatures. Randax® motor technology enables the efficient cooling inside the entire machine frame and customized materials and coolants according to application and customer needs.

The liquid-cooled electrical motors can be tailored for example to pump liquids, to be used as a drive motor for vehicles and construction machinery or in demanding process industry applications.

Technical specifications:

Type

RXA 45LC RXA 60LC RXA 125LC RXA 200LC RXA 300LC RXA 500LC

Nominal power

45 kW 60 kW 125 kW 200 kW 300 kW 500 kW

Nominal voltage

400 VAC 400 VAC 400 VAC 400 VAC 400 VAC 400 VAC

Rotation speed

1 000 RPM 1 000 RPM 2 000 RPM 2 000 RPM 1 000 RPM 1 000 RPM

Nominal torque

429 Nm 573 Nm 600 Nm 955 Nm 2 865 Nm 4 775 Nm

Efficiency

> 96% > 96% > 96% > 96% > 96% > 96%

Diameter*

500 mm 500 mm 500 mm 500 mm 620 mm 620 mm

Length*

377 mm 377 mm 377 mm 500 mm 480 mm 680 mm

Frame material

RST / HST RST / HST RST / HST RST / HST RST / HST RST / HST

* Diameter, length and weight may vary depending on application where motor is integrated