In our LOHER CHEMSTAR product segment (frame sizes 071 - 355), 50 % of all of the motors we produce have a flameproof enclosure Ex d, certified acc. to ATEX.
Ex d motors for this area have type of protection II 2G Ex de IIC T4 Standard. They are optimally suited for use in hazardous Zone 1.
Also Ex d motors are always designed and constructed to address particular applications, i.e. they can be precisely adapted to the specific project with the highest degree of flexibility - exactly as the customer specifies or the project demands.
This means that individual drives are created that are tailored to the particular plant, application or project specification.
All gray cast iron motors have optimized parameters, i.e. the winding and rotor are optimally adapted to the environmental conditions (electrically and mechanically). Only then can the optimum values for efficiency and power factor be achieved (without derating) for extremely low starting currents. The result is reflected in the energy saving with the lowest load on the line supply and highest efficiency.
These motors are available either surface cooled (t.e.f.c.), water cooled and as braking motor. In addition to the usual types of construction (where the shaft and flange is also in conformance with NEMA), non-standard numbers of poles, pole-changing versions, high-speed designs as well as special cooling types are available.
Our strengths also include special voltages / special frequencies / special insulation / converter operation.
Noteworthy:
Heavy-duty starting design (e.g. separators, centrifuges)
Ships' motors according to ABS, BV, CCS, DNV, GL, LRoS, RINA, RS Classification Societies