Rugged and compact high voltage motors in fin, water jacket and tube cooling. Designed for applications in extreme environments and hazardous zones, especially in oil, gas and petrochemical industry. Available in all of the usual types of explosion protection – also double protection, degrees of protection up to IP66 (special designs up to IP68), special paint finishes, high and low temperature versions and cooling types tailored to the application – make them predestined for sectors such as oil, gas and petrochemical.
Well suited to Zone 1 and highly explosive environments, including those containing hydrogen.
Also certified for low temperatures, suitable for use in arctic environments
Extremely rugged due to torsional stiff steel frame
On request also available in double protection Ex d and Ex e
Double certified motors for use in hazardous zones with gas or dust
Compact design to reduce space required and transport costs
Very low maintenance water jacket cooling system
Long service life as a result of the uniform cooling
Seawater/saltwater can be directly used as coolant
Extremely quiet as they have no outer fan – even when converter operated
Extremely high overload capability
Very rugged with stainless steel cooling pipes
Special inner cooling system with X ventilation, axial and radial cooling slots for a uniform temperature distribution
Flameproof enclosure (Ex d) up to 7 MW
Safe operation also in exceedingly hazardous areas, e.g., LNG tankers
Predestinated for extreme locations, e.g. offshore rigs
Increased stiffness, low vibration levels, maximum reliability
Outstanding suitability for deserts and arctic regions
Highly modifiable for individual customer demands retrofit applications
355 – 1000 mm
0.15 – 7 MW
No. of poles:
2 – 16 poles (higher on request)
3 – 11kV (higher on request)
Degree of protection:
IP55, IP56, IP65, IP66 (special designs up to IP68)
IC 411, IC 416, IC 511, IC 516, IC 71 W
- Non sparking, Zone 2, II 3 G Ex nA IIC T3 Gc - Increased safety, Zone 1, II 2 G Ex e IIC T3 Gb - Flameproof, Zone 1, II 2 G Ex de IIB T4 Gb - Flameproof, Zone 1, II 2 G Ex de IIC T4 Gb - Pressurized, Zone 1, II 2 G Ex px IIC T3 Gb
Covering all of the applicable types of ex-protection
Degree of protection up to IP66 (special designs up to IP68)
Engineered based on international standards (ATEX, NEPSI, EAC (Gost), CCOE certified)
Available in high and low temperature design
Tailored to requirements of pumps, fans and compressors in the Oil & Gas industry, LOHER VARIO motors offer features including all types of explosion protection (as well as double protection) required in the Oil & Gas industry, special coating systems to protect against very humid, salty marine environment (in compliance with Norsok specification), special designs for oil and gas fields in arctic or desert regions, and water-jacket cooled versions for offshore applications such as purging pumps, hoisting gears and rotary tables. Also important to note that also available in designs that fully comply with the API standard and the associated high requirements regarding vibration quality frequently specified in the oil and gas industry.
Tailored to requirements of agitators, centrifuges and extruders in the petrochemical industry, LOHER VARIO motors offer all types of explosion protection (as well as double protection), special coating systems to protect against chemically aggressive ambient atmospheres and special designs for oil and gas fields in arctic or desert regions. Also important to note that also available in designs that fully comply with the API standard and the associated high requirements regarding vibration quality frequently specified in the petrochemical industry.
For onboard use on liquid gas (LNG) tankers, LOHER VARIO is available in double protection Ex d and Ex e. To address this requirement LOHER VARIO motors have a mechanical design with type of protection “flameproof enclosure”. They also have type of protection “increased safety”, which ensures that specific temperatures of the active parts – both inside the motor as well as on the surfaces – are not exceeded.
Cell-based MV drive featuring a separate transformer
Cell-based MV drive featuring an integrated transformer
Customized MV drive system for special requirements
Single motor MV drive with 3-level voltage source
Single/multi motor MV drive with 3-level voltage source