ELECTRIC MOTORS
Electric Motors Range
The range (1LAO) is available from frame sizes 160M to 355L in 2, 4, 6 & 8 pole design.
Standards
Performance conforms to IS:325, IEC 34, Part 1 and dimensions according to IS:12321, IEC 72.
Ratings
Motors are rated for continuous duty at an ambient of 400 C and site altitudes of up to 1000m above mean sea level.
Voltage and Frequency
Motors are designed for 415V + 3%, supply. Any other voltage/frequency available on request
Protection  
Motors have IP55 degree of protection as a standard feature. This degree of protection conforms to IS : 4691 and IEC 34, Part 5.
Winding Protection
Embedding of PTC thermistors in the stator winding is feasible and can be provided on request.
Motor frame  
Motors are supplied in a robust, rugged cast iron frame with integral feet.
Terminal Box
Standard location of the terminal box is on the top of the housing terminal box on right or left hand side of housing available on request. the terminal boxes can be rotated in steps of 90 deg in each position. The terminal box also has IP 55 degree of protection.
Insulation System  
Motors are provided with Class 'F' insulation system. In the case of utilization to Class 'F' temperature limits, either the amblent temperature can go upto 55 deg C for the same rated output or the rated output may be increased by 10%.
Noise Level
Motors are designed for low noise levels in accordance with IS:12065
Cooling and Ventilation
Type of cooling is IC 0141 as per IS-6362. All motors have an external bi-directional centrifugal fan.
Paint
Standard motor(RAL 7030) is provided and is suitable for tropical conditions
Earthing Terminals
All motors are provided with 4 earthing terminals, two in the terminal box and one on each foot.
Bearing System
Frames upto 225M have pre-lubricated bearings as a standard feature but regreasing facility can be provided on request. Frames 250 and above are equipped with regreasable bearings as a standard feature.