Project Information
Overview
Kirloskar Electric manufactures a wide range of AC motors. These motors are specially for crane applications and other arduous duties of auxiliary steel mill drives such as transfer cars, titers, pushers, coilers, winchers etc. Both wound rotor (slip ring) motors and cage motors are used depending on the application and controls.
Kirloskar Crane Duty Slip Ring Motor Brochure
Technical Specification
Features
Technical Specification
| 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 |
Features
- High pull out Torque and low rotor inertia
- Suitable for various intermittent duties S3,S4,S5
- Impregnation with Class F thermosetting varnish
- Large slip ring unit
- Ample size terminal box
- Dynamic balancing to ensure lower vibration
- Metallic fans for wound rotor motors