Low Voltage Motors: Open Type Series

October 21, 2016 By admin No comments yet AC Motors, Low Voltage Motors, Motor

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	Star Delta
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	6
Connection	Delta for all frames
Degree of protection	IP 22 for SA/VSA series up to 225 Frames, IP 23 for SA/VSA series – 250 to 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	SA / VSA 180 to 355. (for ‘B’ flange mounting ratings covered in SA180M to be offered in VSA180L, & ratings covered in SA200M to be offered in VSA200L)
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	Aluminium for all 2 pole ratings of SA frame & all ratings of VSA frame, Polypropelene for 4, 6, & 8 pole ratings of SA180 to 225 frame, mild steel for 250 to 355 – 2pole, Mild steel / Aluminium for 250 to 355 frames – 4, 6, and 8 poles.
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 Online greasing facility for all

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