• JSL Industries Limited

Squirrel Cage Drip Proof Motors

Jyoti screen protected drip proof squirrel cage motors are specially designed to provide years of continuous trouble free service. These motors are suitable for all normal industrial drives, pumps, etc., providing adequate protection against dripping liquids and falling objects. Performance features: CD Series motors continuously rated for S1 duty as per IS: 325; suitable for a 3-phase supply of 415V ±10% and frequency of 50 Hz ±5%; combined voltage and frequency variation allowed is ±10%; and performance in general conforms to IS: 325 and other equivalent standards like IEC-34, VDE 0530 and BS 5000/4999. These motors are available in ratings of 15 kW to 55 kW. The motor enclosure offers IP-22 degree of protection as per IS: 4691. The mounting dimensions of these motors are in accordance with IS: 1231, which are also conforming to IEC-72. Stator stack is made up of low-loss silicon stampings to minimise iron loss. The stack is held in position on body stacking ribs. The stack is subjected to compression of pre-determined value to make a compact and rigid assembly. Rotor stack is made up of low-loss silicon steel stampings. They are aluminium die cast and shrink fitted on precision machined, 40C8 carbon steel shaft. Rotors are dynamically balanced on a highly sensitive electronic machine. This limits vibrations within the tolerance as per IS-12075. The insulation in these motors is of class `F' with temperature rise limited to `B'. Materials are so used as to suit electrical, mechanical, thermal and environmental conditions. Modified polyester enamelled winding wires as per IS: 13730 (part-III) are used for adequate electrical insulation and good thermal properties. All the motors are tested in the course of manufacture and before despatch in accordance with IS-325.