EVERYTHING YOU NEED, WHEREVER YOU NEED IT

MARINE ALTERNATORS

EVERYTHING YOU NEED, WHEREVER YOU NEED IT

Whatever you want, you can have it with Mecc Alte. As a world leading alternator manufacturer we offer a diverse range of marine alternators from small water-cooled specialised products through to a fully advanced marine product; supplied into both essential and non-essential duties, from the very small to the very large vessels.

There is a wide range of requirements in marine applications. It is important to have a standard product that suits the vast majority of these – either by standard features or simple additions. The 12 wire reconnectable, multi-purpose winding accommodates a wide range of voltage and Hz requirements.

Outside of this there are many dedicated windings if required – such as 690V 50/60Hz for windfarm support vessels.

The IACS IP23 mandatory requirement is a standard feature. Enhancements can be supplied extending ingress protection in IP43 to IP45 levels. It is recognised that certain installations require higher levels of protection due to engine room fire protection systems. Derates will apply.

While the standard build fulfills the mandatory requirements of most installations – including 300% SCC for up to 10 seconds, there are build options available if required to satisfy a given specification.

MARINE SURVEY SOCIETY OPERATIONAL CLASSIFICATIONS

	Temperature Rise
	Ambient Temperature	Class H	Class F	Class B
RINA	40°C	125°C	105°C	80°C
RINA	45°C	120°C	100°C	75°C
Lloyd’s Register	40°C	115°C	100°C	75°C
Lloyd’s Register	45°C	110°C	95°C	70°C
Det Norske Veritas	40°C	125°C	105°C	80°C
Det Norske Veritas	45°C	120°C	100°C	75°C
Bureau Veritas	40°C	125°C	105°C	80°C
Bureau Veritas	45°C	120°C	100°C	75°C
American Bureau of Shipping	40°C	125°C	105°C	80°C
	45°C	120°C	100°C	75°C
	50°C	115°C	95°C	70°C
Korean Register	40°C	125°C	100°C	80°C
	45°C	120°C	95°C	75°C
	50°C	115°C	90°C	70°C

BUILT TO HANDLE ANY SITUATION

PROVEN CAPABILITY

Mecc Alte alternators are fitted with innovative features, as standard, to ensure high levels of performance and reliability. All standard products are extremely versatile and can be adapted to suit even the most demanding applications. This product is supported by an experienced, professional team who are able to ensure exceptional support globally - both pre and post order. In addition, unique special and customised machines are available to suit specific applications, such as stainless steel framed, low magnetism machines for naval mine-sweeper vessels or vertical-mounted shaft drive machines.

STANDARDS AND CERTIFICATION

The BV, DNV and BKI batch type and line approval highlights the company’s competence in this market sector. Additional testing and certification can be provided through all major classification societies such as ABS, BV, CCS, DNV, GL, KR, LR, NK, RINA, or others where design approvals are already in place.

EXCEPTIONAL EXCITATION

The ‘MAUX’ (Mecc Alte Auxiliary Winding) is used throughout the range and has been a proven standard for Mecc Alte in all market sectors. MAUX is a brushless excitation system deriving power from a dedicated auxiliary winding within the main stator. This winding is protected by four layers of polyester in addition to the clear varnish and EG43 severe environment protection used in marine applications.

Fitted within the main stator, it minimises overall dimensions of the alternator and ensures a compact machine.

The MAUX system ensures high levels of performance within compact dimensions and surpasses industry requirements giving >300% forced current (short circuit maintenance) for 20 seconds.

PMG excitation is an option on all frames, if needed, to satisfy more traditional specification
requirements.

CONSTRUCTION

Rigid steel frames (FeP12).
Rotors are dynamically balanced with ½ key (ISO 8821), conforms to class G.2.5 (ISO 1940).
Squirrel damper ‘cage’ windings in the rotor for parallel operation.
Digital AVRs (Automatic Voltage Regulators) are used throughout the range, ensuring ease of replacement and maximum performance.

BEARINGS

Sealed for life high quality bearings up to the ECO38 frame.
Regreasable bearings for ECO40 (drive end only on 2 bearing machines), ECO43 and ECO46.

PROTECTION

Standard protection is IP23 but for marine applications we also offer additional protection. We can also offer inlet filters, IP43, IP45 and IP54 protection levels if required. On larger machines, we can offer CACA or CACW cooling by special order on request.

Insulation materials used provide a system insulated to Class H level. Superior processes are employed to add an EG43 compound after insulation over the main and exciter windings to give marine standards of protection. Mecc Alte offers a range of insulation systems from GREY to VT Total+ protection for operating in the harshest of environments.