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AC Motors

Low Voltage Motors: Wound Open 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 21 for SB/VSB series up to 225 Frame, IP 23 for SB/VSB series 250 & 355 frames
Method of cooling IC 01
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 / 'B' flange mounted.
Frame sizes SB / VSB 180 to 355. (for 'B' flange mounting ratings covered in SB180M to be offered in VSB180L, & ratings covered in SB200M to be offered in VSB200L)
Shaft extension Single cylindrical extension as per IS: 1231
Body material Cast iron.
T.box material Cast iron , mild steel for 250 & 355 Frames
Fan material Aluminium for all frames up to 225 frames, mild steel for ;250 & 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/roller bearings for 180 to 355
Online greasing facility for 180 to 355

Dimension Drawings

FRAME FOOT 'B' FLG MAX.CABLE SIZE, STATOR
180M 32239298 ---- 1x3Cx70sqmm
180L 32243098
200M ----
200L ----
225M
250S 31103797 31112996 1x3Cx120
250M
280S 1x3Cx240
280M
315 31101206 ---- MMD-02-145
315LX 41101007 ----
355      

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