Used in Ex-Zone 2 for
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 JNWK–... for roller bearings / JNXK-... 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 JNRK–... for roller bearings / JNQK-... 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.
Motors: | JN.K / MLFB: 1PS1 |
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Shaft heights: | 500, 560, 710 |
Power range: | 200 kW - 5600 kW |
Number of poles: | 2 - 16 poles, |
Voltage range: | 380 V - 950 V |
Rated voltage: | 380 V / 400 V / 415 V / 500 V / 660 V / 690 V |
Frequency converter: | Line and converter operation |
Degree of protection: | IP23, IP55, IP56 |
Cooling type: | IC 611, IC 616, IC 666, IC 81W, IC 86W, IC 01 |
Type of construction: | IM B3, IM B35, IM V1, IM V10 |
Enclosure: | Welded steel |
Bearings: | Roller bearings, sleeve bearings |
Standards: | IEC, EN, DIN, VDE |
Explosion protection: | II3G Ex nA II T3 |
Type of protection: | N.A. |
Noise level: | max. 85 dB(A) (load, 50 Hz), lower noise versions are available |