Low Voltage Motors: Spectrum Series

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

FEATURES	VALUES/ STANDARDS
Starting	Star Delta/DOL (with shorting links but with 2 entries)
Permissible starts/hr.	Cold successive – 4 hot successive – 3 equally spread – 6
Loading at reduced volts	75% Rated volts for 5 minutes
Insulation / temp.rise	Class `F’ / 70 deg. C
Direction of rotation	Bi-directional
No. Of leads	6
Connection.	Delta
Degree of protection	IP 55
Method of cooling	IC 411
T.box position	RHS looking from driving end
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, ‘B’ flange, Foot cum ‘B’ flange
Frame sizes	SC 180 to 355 (For ‘B’ flange mounting, ratings covered in SC180M to be offered in VSC180L, & ratings covered in SC225S to be offered in VSC225M)
Shaft extension	Single cylindrical extension as per IS: 1231
Body material	Cast iron
T.box material	Cast iron up to 225 frame, mild steel for 250 to 355 frame
Fan material	Polypropelene for 4, 6, & 8 pole & cast iron for 2 pole up to 225 frames. Mild steel for 250 to 355 frames for all polarities
Accessories	Nil
Paint & shade	NC base RAL5012 shade up to 225, Epoxy base RAL5012 above 225 frame
Bearing type and Greasing facility	Open type bearings for SC180 to 355 Online greasing facility for SC180 to 355