Crompton Greaves has now developed a
complete family of high efficiency motors confirming
to Eff level 1 standards of IEEMA : 19-2000 and
other applicable standards in Europe and rest of the
These motors are available in TEFC construction for
use in safe areas and also in flameproof enclosure
for use in Hazardous areas.
Higher efficiencies are achieved by
following special features:
* Low loss special grade of thinner laminations.
This reduces the Iron loss even at partial loads.
* Thicker conductors and more copper contents reduce
copper loss due to lower resistance.
* Longer core length, reduced and uniform air gap
between stator and rotor to reduce stray losses.
* Special design of fan and fan cover to reduce
Improved efficiency is available
from 60 % to 100 % load. The eff curve is almost
flat resulting in higher energy savings as in most
of the cases the motor is not always fully loaded.
The special design features also result in lower
operating temperatures, which enhance the life of
motor and reduce the maintenance costs.
These motors have inherently low noise and vibration
and help in conservation of environment.
Crompton Greaves energy efficient motors offer an
additional feature, which no other manufacturer
These motors are with highest power factor in the
industry due the special exclusive designs available
with Crompton Greaves.
The higher power factor reduces the currents in the
cables supplying power to motor and this reduces
cable loss, improving the system efficiency
sometimes by even 2 %. Sometimes this allows even a
lower cable size saving tremendously on capital
costs. Reducing capacitors required improving power
factor also makes saving.
Efficiency Level 1
* 0.37 kW to 450 kW, (2 pole to 8 pole)
* Frame sizes: 71 to 400 for TEFC 80 to 315 for
* The entire range is available in IEC frames sizes
(Metric range) and also in NEMA frames
Conform to following standards:
* IEEMA: 19-2000
* IS 12615
* IS 325-1996 & IEC 34
* NEMA EPACT EFFICIENCY VALUES (for NEMA motors)
IEEMA 19-2000 standard covers kW ratings only up to
160kW. However we are offering energy efficient
motors up to 450 kW.