Product Attributes
| Attribute | Details | Attribute | Details |
|---|
| Model NO. | NMK710L4A | Species | Nmk Series |
| Application | Industrial | Customization | Available |
| Operating Speed | Constant Speed | Number of Stator | Three-Phase |
| Rotor Structure | Winding Type | Casing Protection | Closed Type |
| Number of Poles | 4p-16p | Starting Mode | Direct on-line Starting |
| Certification | ISO9001, CCC, CE | Rated Power | Up to 10000kW |
| Frequency | 50Hz, 60Hz | Voltage | 3kV, 6kV, 10kV, 13.8kV |
| Frame Size | 400-710mm | Cooling Method | IC611 / IC81W |
| Mounting Arrangement | IMB3 / IMV1 | Rotation Direction | CW / CCW |
| Duty Type | S1 | Insulation Class | F |
| Temperature Rise | B | Ambient Temperature | -20°C up to 50°C |
| Installation Site | Indoor / Outdoor | Protection | IP55 |
| Space Heater | Yes | Temperature Sensor | Yes |
| Transport Package | Standard Seaworthy Packing | Origin | China |
| HS Code | 8501530090 | Production Capacity | 8000 Units |
Product Description
1. Product Overview
The NMK series modular slip-ring motors are specifically engineered for heavy load inertia applications. They are the ideal solution for operations requiring high starting torque and low starting current, making them highly suitable for mill drives or environments with weak network conditions. By minimizing mechanical stress during startup, NMK slip-ring motors significantly increase the lifetime of driven equipment while providing maximized availability and high torque across the entire speed range.
These motors are widely utilized in mills, crushers, fans, and conveyors within the mining, cement, and metal industries. Furthermore, they offer a reliable solution for pumps in the water industry, as well as safe area pumps, compressors, and mixers in the petrochemical sector.
NMK slip-ring motors are available in shaft heights ranging from 400 to 710 mm, with standard cooling and protection combinations of IC611/IP55 and IC81W/IP55. The motors are rated up to 10,000 kW and feature a welded steel frame. The slip ring unit can be supplied with permanent contact brushes or brush lifting gear, enclosed in a housing at the N-end, completely separated from the main motor frame. A Liquid Resistance Starter (LRS) is also available upon request.
Note: While this catalog typically displays technical data for 6kV and 11kV at 50Hz for 4, 6, and 8-pole motors, the complete product scope covers motors up to 60Hz, 16 poles, and voltage ratings up to 13.8kV. For detailed technical data and custom configurations, please contact us.
2. Mounting Arrangements
Standard mounting arrangements for NMK motors include:
- Code I: IM B3
- Code II: IM 1001 (Horizontal foot mounted)
- Other mounting arrangements, such as IM1002, are available upon request.
3. Enclosure and Cooling
Standard combinations for NMK motors are IC611/IP55 and IC81W/IP55. Other cooling methods, including IC616 and IC86W, are available on request.
- IC611/IP55: This design features an air-to-air heat exchanger mounted on the fully enclosed motor. Shaft-mounted fans are fitted both inside the motor frame and inside the slip ring housing, as well as outside the casing, to supply the internal and external cooling circuits. The motor is fully protected against dust and splashing water from any direction.
- IC81W/IP55: This totally enclosed machine is equipped with machine-mounted and SRU housing-mounted air-to-water heat exchangers. A shaft-mounted fan inside the casing supplies the internal cooling circuit, ensuring protection against dust and splashing water from any direction.
4. Packaging
We provide standard seaworthy packaging for export, including plywood or wooden fumigation packages. These are fully suitable for long-distance transportation by sea or land.
5. Warranty Period
- Standard Warranty: 12 months after commissioning, or 18 months after delivery, whichever comes first.
- Extended Warranty: Warranty period extensions are available. Please contact us for further details.
