Used in Ex-Zone 2 for
The LOHER VARIO Ex nA series has a welded steel enclosure for the highest degree of variability and versatility. Flange rings at the ends of the enclosure increase the torsional stiffness and ensure a vibration-proof mechanical design. The steel version allows various bearing concepts, dimensions can be adapted and a wide range of instruments can be mounted. The surface cooling using flat ribs combined with a defined inner cooling circuit with shaft-mounted fan inside the motor ensure optimum motor utilization.
The copper bar rotors used as standard allow the starting and operating parameters to be optimized for each and every application.
Motors: | AN.K / MLFB: 1PS1 |
---|---|
Shaft heights: | 355, 400, 450, 500, 560 |
Power range: | 90 kW - 2100 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: | IP55, IP56, IP65, IP67 |
Cooling type: | IC 411, IC 416, IC 71W |
Type of construction: | IM B3, IM B35, IM V1 |
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 |