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FEATURES
1. Energy
Saving:
SD series motors are energy efficient and ideally
suited for power intensive, process and other industries.
2. High
Torque:
SD series cage motors have high staring and pullout
torques and accelerate the load quickly. Wound
rotor motors have high pullout torques.
3. Low
Noise Levels:
SD series motors have noise levels with 85dB(A) at 1
meter and conform to IS:12065.
4. Low
Vibration Levels:
SD series motors conform to IS:12075 for vibration
level.
5. Stator:
The
cast iron stator body is robust and shock resistant. Ribs on
body are of variable pitch heights so as to
have more cooling surface area. The stator is
generally wound with enamelled copper wire / strip with class
"F" insulation and windings are braced to prevent coil deformation due to stress caused by surges.
6. Rotor:
The rotor is wound, generally with enamelled copper wire or
strip with class "F" insulation. End windings are
banded with non-magnetic steel wire to
withstand electro-magnetic forces. For special applications high tensile
epoxy tape is employed for
banding.
7.
Core:
The
core is made from low loss, high permeability, varnish insulated
electrical grade sheet steel. Stampings
are hydraulically pressed, then clamped to form a
rigid structure.
8. Treatment:
Wound
stators and rotors are impregnated using polyester resin varnish
having class "F" thermal
-capability. Polyurethene paint is made as a standard
in a conveyorised painting plant. Other possible on request.
9. Shaft:
Shafts
are made from high carbon steel of cross section adequate enough to
provide strength and rigidity
to minimise the deflection and vibrations.
10.
Bearings:
Grease
lubricated antifriction bearings of same size are used at DE and NDE
and can be interchanged if called
for. Bearings have 90% survival life of a
minimum of 40,000 working hours for drive transmission direct
through flexible coupling.
11.End-Shields:
End-shields on
DE and NDE are
identical and can be interchanged, if called for, minimizing the users inventory.
12.Terminal
Box:
Terminal
box with improved aesthetics is offered as standard execution. Cable
terminations are
housed in a terminal box of adequate proportion having sufficient
electrical clearances. The terminal
box is effectively boxes are provided with conduit entry as a
standard practice. Compression glands
can be provided upon request at extra cost. Terminal boxes for frame
sizes 250 and above are tested
for through fault level of 43.7 kA for 0.25
secs.
13.Brush Gear and Sliprings:
The
brush gear is rated for continuous duty and is of constant pressure
type. The slipring unit comprises
of phosphor bronze rings shrunk fitted on to fibre glass insulated
hub.
APPLICATIONS:
SD motors are ideal for various industrial applications like
Pumps, Compressors, Fans, Crushers Mills. Conveyors
and are best
suited for industrial environment conditions.
SPECIFICATION:
SD motors are rated for continuous
duty (S1), Altitudes up to 1000m and ambient temperature up to
50°C.
Motors are suitable for 415 V ± 10%, 50 Hz ± 5% and
combined variation of ± 10%, 3 phase supply with
IC411/IP55 protection, Insulation class "F" and
temperature rise to class "B". We can also supply
motors
with IC01/IP23 protection, voltage 220/380,440/460/660V
and frequency 25/50/60/ Hz.
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