AMZ propulsion motors are synchronous motors designed for demanding VSD (variable speed drive) propulsion applications in different types of vessels. Special attention is paid to the requirements of the classification societies as well as customer needs. These include special bearing requirements resulting from the inclination of the vessel, and requirements with regard to structure-borne noise and vibration (especially on cruise vessels). The motors are designed for the most demanding conditions found in engine rooms (high ambient temperature). They are totally enclosed with air-to-water heat exchangers incorporating cooling motors with fans. This ensures safe operation throughout the speed range. The internal cabling is halogen-free and flame-retardant. The motors have also been designed with ample space for maintenance.
The AMZ series are synchronous marine propulsion motors designed for demanding VSD applications on vessels such as cruisers, ferries and ice‑breakers. They feature totally enclosed construction with air‑to‑water heat exchangers, halogen‑free flame‑retardant cabling, and ample space for maintenance, meeting classification society requirements for noise, vibration and bearing loads.
Key features include brushless excitation (with brush‑and‑slipring option), compatibility with ABB ACS converters, optional cyclo‑converter and LCI drives, and a patented vibration‑dampening system for frame sizes 1250‑2500. The motors are available up to 50 MW, with rated speeds from 0‑1800 rpm, and carry certifications from major classification societies.
| Power range | up to 50 MW |
|---|---|
| Rated speeds | 0 - 1800 rpm |
| Poles | 4‑20 |
| Frame size | up to 2500 (IEC) |
| Temperature/insulation class | F/F |
| Protection class | IP44 (std) up to IP56 |
| Redundancy options | double winding, double armature or tandem |
| Converter compatibility | ABB ACS converter family |
| Excitation type | brushless (brush‑and‑slipring optional) |
It uses brushless excitation, with an optional version that uses brushes and sliprings.
The motor is rated IP44 as standard and can be supplied up to IP56.
They are supplied for cruisers, car and train ferries, ice‑breakers, multi‑purpose tankers, LNG tankers, ice‑going vessels and supply vessels.