Low Voltage Motors: Crane Duty Motor(Slipring)

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	S3,S4 & S5 (Refer KHD-50-33R2)
Service factor	1.0

FEATURES	VALUES/ STANDARDS
Starting	DOL up to 100 & Star Delta for 112 above frames
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°C
Direction of rotation	Bi-directional
No. Of leads	3 up to 100 & 6 for frame 112 & above
Connection	Star Up to 90 frame, 6, & 8 pole ratings of 100 Frames
Connection	Delta 2 & 4 pole ratings of 100 frame & 112 and above all ratings
Degree of protection	IP 55
Method of cooling	IC 411
T.box position	RHS looking from DE (towards DE up to 160).
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
Frame sizes	‘ePM80 to 160’, ‘eSC180 to 355’.(For ‘B’ flange mounting ratings covered in ‘eSC180M’ to be offered in ‘eVSC180L’, & ratings covered in ‘eSC225S’ to be offered in ‘eVSC225M’)
Shaft extension	Single cylindrical extension as per IS: 1231
Body material	Cast iron
T.box material	Cast iron
Fan material	Aluminium up to 160, Cast iron for 180 – 225, mild steel for 250 to 355 Frames
Accessories	Nil
Paint & shade	Epoxy base RAL5012
Bearing type Greasing facility	Prelubricated sealed bearing from 80-160. Open type Bearing from 180. Online greasing facility is for 180 to 355 only