Open Drip Proof Motors (ODP Motors) is a design of asynchronous electric motors in a splash–proof housing with a degree of protection IP23 or IP44. In the production program Marelli Motori electric motors with these characteristics, they are designated by the C3 – C4 series, low-voltage electric motors are manufactured at a voltage of 400V /690V, high-voltage electric motors at 3300V /6600V /11000V.
Feature of operation: cooling occurs through the passage of outside air inside the electric motor and in direct contact with the electromagnetic system. This cooling method increases the cooling efficiency, reduces the weight and size parameters, but at the same time increases the requirements for environmental quality. To reduce the environmental impact on the engine's electrical system, a "ducted type" of cooling is recommended – air intake occurs from a non-industrial environment and is supplied through air ducts to the electric motor.
Information about Marelli Motori high-voltage electric motors in splash-proof design presented in this section.
Technical parameters of splash–proof Marelli Motori engines of the C3 - C4 series
- Type of housing construction: welded steel frame with stiffeners, resistant to vibration loads.
- Rated power: up to 10,000 kW (up to 10mW);
- Operating speed range: 500 /750 /1000 /1500 /3000 rpm;
- Operating voltage range: from 380 V to 11 kV;
- Overall height: 250 – 1000 mm;
- Mounting design: IN 1001, IN 3011;
- Degree of protection housing: IP23, IP44 (optional input and output filter);
- Degree of protection: IC01, IC06;
- Insulation class: F;
- Temperature class: B;
Standard sizes
C3M 355 LX 4, C3M 355 LW 4, C3M 355 LY 4, C3M 355 LZ 4, C3M 400 LX 4, C3M 400 LW 4, C3M 400 LY 4;
C4M 450 LA 4, C4M 450 LB 4, C4M 450 LC 4, C4M 500 LA 4, C4M 500 LB 4, C4M 500 LC 4.
1000 rpm version:
C3M 355 LX 6, C3M 355 LW 6, C3M 355 LY 6, C3M 400 LX 6, C3M 400 LW 6, C3M 400 LY 6;
C4M 450 LA 6, C4M 450 LB 6, C4M 450 LC 6, C4M 500 LA 6, C4M 500 LB 6, C4M 500 LC 6, C4M 630 LA 6, C4M 630 LB 6, C4M 630 LC 6, C4M 710 LA 6, C4M 710 LB 6, C4M 710 LC 6, C4M 800 LA 6, C4M 800 LB 6, C4M 800 LC 6.
750 rpm version:
C3M 400 LA 8, C3M 400 LB 8, C3M 400 LC 8;
C4M 450 LA 8, C4M 450 LB 8, C4M 450 LC 8, C4M 500 LA 8, C4M 500 LB 8, C4M 500 LC 8, C4M 630 LA 8, C4M 630 LB 8, C4M 630 LC 8, C4M 710 LA 8, C4M 710 LB 8, C4M 710 LC 8, C4M 800 LA 8, C4M 800 LB 8, C4M 800 LC 8.
Version 600 rpm:
C4M 630 LA 10, C4M 630 LB 10, C4M 630 LC 10, C4M 710 LA 10, C4M 710 LB 10, C4M 710 LC 10, C4M 800 LA 10, C4M 800 LB 10, C4M 800 LC 10.
