Low Voltage Motors: Flame Proof Series

FEATURES	VALUES/ STANDARDS
Ambient Temperature	-10 to +50°C
Altitude	Not exceeding 1000mtrs above mean sea level.
Atmosphere	Corrosive & Hazardous , Zone-I , DIV; I ,II , IGN TEMP – T3
Relative Humidity	Up to 100%
Voltage	415V±10%, 3 pH.
Frequency	50Hz ±5%
Combined Variation	10%
Duty	S1 (continuous)
Service factor	1.0

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