Wound Open Type Series
Product Description
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 | 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 |