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AC Motors

Low Voltage Motors: Wound Close Type Series

Operating & Supply Conditions

FEATURES VALUES/ STANDARDS
Ambient Temperature -10 to +50°C
Altitude Not exceeding 1000mtrs above mean sea level.
Atmosphere Non Corrosive & non Hazardous
Relative Humidity Up to 100%
Voltage 415V ±10%, 3 ph.
Frequency 50Hz ±5%
Combined Variation 10%
Duty S1 (continuous)
Service factor 1.0

Execution & Features

FEATURES VALUES/ STANDARDS
Starting Resistive start
Permissible starts/hr Cold successive – 4 , Hot successive - 3, Equally spread - 6
Loading at reduced volts 75% Rated volts for 5 minutes
Insulation ST / RT Class `F' / 'F'
Temp. Rise ST / RT Class `B' / 'F'
Direction of rotation Bi-directional
No. Of leads, ST/RT 3 / 3
Degree of protection IP 55
Method of cooling IC 411
T.box position RHS looking from DE
Bearing life
(90 % survival basis)
40,000 working hrs. For direct drive
20,000 working hrs. For belt drive
Vibration Normal class as per IS 12075.
Noise As per IS 12065
Construction Foot mounted
Frame sizes SD 180L, SD200L , SD225M , SD250S & M, SD280S & M, SD315, SD315LX & SDX355X
Shaft extension Single cylindrical extension as per IS 1231
Body material Cast iron
T.box material Cast iron up to 225 Frames, mild steel for 250 to 355 Frames
Fan material Cast iron up to 225 Frames, mild steel for 250 to 355 Frames
Accessories
Nil
Paint & shade NC base RAL5012 shade up to 225, Epoxy base RAL5012 above 225
Bearing type
Greasing facility
Open type ball bearings for all frames
Online greasing facility is for all frames

Dimension Drawings

FRAME FOOT MAX. CABLE SIZE, STATOR
180L 32217797 1x3.5Cx70sqmm
200L
225M
250M 31108697 1x3Cx120sqmm
280S & M 1x3Cx185sqmm
315 31100897 MMD-02-150
315LX 31111103
355X 31102906

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