Both mechanical and electrical standard versions of Rotor NL® electric motors can perform in marine and offshore applications.
Rotor has adapted and produces electric motors for lower and upper deck use. If necessary, these motors can use a fitted break or an encoder. Depending on the requirements of the application, motors can use IC410, IC411, IC416 or IP23 enclosures. We specialize in special coating systems and elevated IP class designs improving the reliability of the motors even under the harshest conditions.
Specifications
- kW: 0.18-2500
- IEC frame size: 63-355
- Protection class: IP23-IP66
- Insulation class: F
The Marine Solution
The basic mechanical and electrical design of Rotor NL® electric motors is tailored to marine and offshore applications. Given the often aggressive saline environment, the RN series is available with cast iron motor housings and motor shields.
Rotor produces electric motors that can be installed lower and upper deck use. These motors may be fitted with an attached disc brake. Motor windings are based on ambient temperatures up to 50°C and have a moisture and mold resistant treatment, giving them the ability to withstand relative humidity up to 96 percent. These electric motors meet the various requirements of ship classification societies and are supplied with a purchase certificate for essential service.
A marine motor's environmental temperature and maximum temperature increase because of the winding.
The following list will provide an overall guideline
Classification | Ambient temperature | Maximum DT winding ºK at insulation class | |
|---|---|---|---|
℃ | F | H | |
IEC 34-1 | 40 | 105 | 135 |
IEC 92.301 | 50 | 90 | 115 |
American Bureau of Shipping | 45 | 100 | 120 |
Bureau Veritas | 45 | 100 | 120 |
China Classification Society | 45 | 100 | 120 |
China Cooperation Register | 45 | 95 | 110 |
DNV / GL | 45 | 100 | 120 |
Korean Register of Shipping | 45 | 100 | 120 |
LLoyd’s Register of Shipping | 45 | 95 | 110 |
Nippon Kaji Kyokai | 45 | 100 | 120 |
Registro Italiano Navale | 45 | 100 | 120 |
Russian Maritime Register of Shipping | 45 | 95 | 120 |
Russian River Register | 45 | 95 | 110 |
The resistance method determines the winding’s temperature increase.
Specific regulations apply to marine motors regarding the mechanical model.
Please contact us with your specific requirement.