• Hindustan Motor Mfg Co

Flame proof motors

Hindustan Motor Mfg Co offers a range of flame proof motors manufactured to serve industries such as coal mines, refineries, petrochemical industries, etc, where flammable gases, vapours, fumes and coal dust are natural atmospheric hazards. The motors comply with IS: 2148:1981 for gas groups I, IIA and IIB. These motors can be used in all division I and certain division II areas as laid down in guide for selection of electrical equipments in hazardous areas as per IS: 5571:1979. Design features: the flameproof enclosure consists of sturdy cast iron parts, which are mechanically robust annd very liberally designed. The cast iron enclosure of the motors is built to withstand any internal explosion. The gaps of joints and where the shaft passes through the frame are so dimensioned as to prevent transmission of igniting flame to the surrounding atmosphere. The motors are so designed that the frame temperature will remain below the ignition temperature of the gas air mixture involved. All cast iron parts forming the flameproof enclosure are tested at 14 kg/cm? (required 10 kg/cm?) hydraulic pressure. All the seats of joints are carefully machined to strict tolerances and rigidly inspected to ensure that the permissible gaps are not exceeded.