Bharat Bijlee Motors

Standard Squirrel Cage TEFC Motors

Safe Area Motors (Motors For General Application CGA1/D)

Standard Squirrel Cage TEFC Motors
Type MA -0.12kW-315kW,
Frame 63-355M

Conformance to Standards :
All motors comply with the following Indian and international standards:

IS 325 Three phase Induction motors-specification
IS:900 Code of practice for installation and maintenance of induction motors
IS 1231 Dimension of three-phase foot mounted A.C. Induction motors
IS 2223 Dimensions of flange mounted A.C. induction motors
IS:4029 Guide for testing three phase induction motors
IS:4691 Degree of protection provided by Enclosures for Rotating Electrical Machinery
IS:6362 Designation of methods of cooling for rotating electrical machines
IS 12065 Permissible limits of noise level for rotating electrical machines
IS 12075 Mechanical vibration of rotating electrical machines
IEC 60045-1, 5 Rotating electrical machines - Rating and performance, degrees of protection
IEC 60072 Dimension and output ratings of rotating electrical machines

Salient features of TEFC Standard Motors:
❖ BBL motors can be continuously overloaded by 10% or can be used up to ambient temperature of 55°C. Temperature rise will be as per Class F limits.
❖ All motors are with degree of protection IP55
❖ All motors up to 280M frame are designed for 50°C ambient
❖ 2Z Bearings are standard up to 180L frame which are filled with high temperature grease suitable up to 140°C
❖ On line re greasing provided from frame 225 onwards
❖ SKF or equivalent make bearings are used and directly procured from the bearing manufacturers
❖ Terminal boxes are large and can be rotated in steps of 90
❖ Terminal Box location can be changed from RHS to LHS at site
❖ Rotors are dynamically balanced with half key
❖ All foot mounted motors are with integral cast feet
❖ Outer bearing covers are integral with end shield / flange
❖ V Rings are used in IP55 motors and no reduction in efficiencies as compared to IP44 motors
❖ Additional anti tracking protective coating of air drying varnish is applied on the winding overhangs
❖ Cooling fans are of aerodynamic design resulting in low noise and are bi-directional
❖ Standard Motors are suitable for mounting with any shaft orientation