| 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 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 |
SB / VSB 180 to 355. (for 'B' flange mounting ratings covered in SB180M to be offered in VSB180L, & ratings covered in SB200M to be offered in VSB200L) |
| Shaft extension |
Single cylindrical extension as per IS: 1231 |
| Body material |
Cast iron. |
| T.box material |
Cast iron , mild steel for 250 & 355 Frames |
| Fan material |
Aluminium for all frames up to 225 frames, mild steel for ;250 & 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/roller bearings for 180 to 355
Online greasing facility for 180 to 355 |
