Crane Duty Motor(Slipring)
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 |
S3,S4 & S5 (Refer KHD-50-33R2) |
| Service factor |
1.0 |
Execution & Features
| 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 |
| 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 |
