LOHER VARIO PLUS series have a modular cooling design featuring double-flow inner cooling for a high power density and a homogeneous temperature distribution.
2 versions are available:
(type JNWA–...for roller bearings / JNXA-... for sleeve bearings):
Optimum cooling is guaranteed specifically for these series due to the harmonized and coordinated heat exchanger. The motor power loss is dissipated through the cooling water and is therefore de-coupled from the ambient temperature. The heat exchangers are available in a wide variety of versions with single and double pipe types. The high quality heat exchanger materials used are adapted to the specific requirements.
(type JNRA–... for roller bearings / JNQA-... for sleeve bearings):
The motors are equipped with air-air heat exchangers. The cooling pipes are manufactured out of galvanized steel; stainless steel versions are available for especially aggressive atmospheres.
JN.A / MLFB: 1PS0
355, 400, 450, 500, 560, 710
200 kW - 5600 kW
Number of poles:
2 - 16 poles, higher pole numbers on request
380 V - 950 V
380 V / 400 V / 415 V / 500 V / 660 V / 690 V
Line and converter operation
Degree of protection:
IP23, IP55, IP56
IC 611, IC 616, IC 666, IC 81W, IC 86W, IC 01
Type of construction:
IM B3, IM B35, IM V1
Roller bearings, sleeve bearings
IEC, EN, DIN, VDE
Type of protection:
max. 85 dB(A) (load, 50 Hz), lower noise versions are available