Used in Ex-Zone 1 for
The motors in the "increased safety" version offer a high degree of explosion protection but at the same time have a low weight and are complex.
The copper bar rotors used as standard allow starting and operating parameters to be optimized for each and every specific application. The steel version allows various bearing concepts, dimensions can be adapted and a wide range of instruments can be mounted.
3 versions are available:
The LOHER VARIO Ex e series is surface cooled with flat ribs combined with a defined inner cooling circuit with internal shaft-mounted fans.
The LOHER VARIO PLUS Ex e series from Loher have a modular cooling design featuring double flow inner cooling for a high power density and a homogeneous temperature distribution in the following versions:
The heat exchangers are available in a wide range of versions with single and double pipe versions.
The cooling pipes are manufactured out of galvanized steel; stainless steel versions are available for especially aggressive atmospheres.
EN.U (Vario-T2), EN.V (Vario-T3), JN.U (T2), JN.V(T3) / MLFB: 1PS2
355, 400, 450, 500, 560, 630, 710, 800
90 kW - 4500 kW
Number of poles:
2 - 16 poles,
380 V - 950 V
380 V / 400 V / 415 V / 500 V / 660 V / 690 V
Line and converter operation
Degree of protection:
IC 411, IC 416, IC 511, IC 516, IC 611, IC 616, IC 666, IC 71W, IC 81W, IC 86W
Type of construction:
IM B3, IM B35, IM V1
Roller bearings, sleeve bearings
IEC, EN, DIN, VDE
II2G Ex e II T2 , II2G Ex e II T3
Type of protection:
max. 85 dB(A) (load, 50 Hz), lower noise versions are available