| 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 |
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 and
Greasing facility |
Open type ball/roller bearings
Online greasing facility for all |
