Mastervolt
Mastervolt Alpha Compact Alternator 28/80 for Volvo (24V / Pulley)
Pickup available at Mercury Yacht Harbour
Usually ready in 2-4 days
Description
The Mastervolt Alpha Compact 28/80 VP is a compact 24 volt automotive-style alternator built to fit Volvo Penta engines, delivering a nominal 85 amps and supplied with a multigroove pulley as standard. Optimised for continuous high power output, it pairs with the optional Alpha Pro III charge regulator to create a MasterBus-enabled three-step charging solution suitable for all battery types, including lithium ion.
Its open construction with double internal fans and an integrated temperature sensor makes it up to 40 percent lighter and 25 percent more compact than a conventional alternator, with up to 30 percent lower fuel consumption. It can be added as a second (Power Take Off) alternator or fitted in place of the stock unit. Please note that the Alpha Pro III charge regulator is not included and is ordered separately (part 45513000).
PRODUCT DETAILS
- 24 V output with a nominal current of 85 A
- Designed to fit Volvo Penta engines (VP)
- Multigroove pulley fitted as standard (part 48420170)
- Alpha Pro III charge regulator not included; ordered separately (part 45513000)
- Up to 40 percent lighter and 25 percent more compact than conventional alternators
- Up to 30 percent lower fuel consumption
- Integrated dual fan cooling with built-in temperature sensor
- Suitable for high ambient temperatures and all battery types including lithium ion
- Cable and electronics protected against oil, moisture and dirt
- Alpha Compact 28/80 VP alternator (24 V, nominal 85 A)
- Multigroove pulley (part 48420170)
No compatible transducers listed for this product.
General specifications
| Charge regulation | via optional Alpha Pro III charge regulator (art.no. 45513000) |
| Isolated operation | yes, with optional isolation bushings |
| Rotational direction | clockwise |
| Galvanic isolation | non-isolated |
| Cooling | integrated dual fan |
| Mounting | swivel arm |
| Pulley included | yes (product code 48420170) |
| Weight | 6.9 kg (15.2 lb) |
Technical specifications
| System voltage | 24 V |
| Nominal current (at 6000 rpm, 25 C) | 85 A |
| Charge current (at 1800 rpm, 25 C) | 45 A |
| Cut-in speed | 1400 rpm |
| Max. rotational speed | 15000 rpm |
| Power Take Off (kW / hp) | 4.8 / 6.4 |
| Max. operating temperature | 120 C (248 F) |
| Connections | positive output stud = 2x M8; W (rpm) signal connection = isolated fast-on; field current connection = Mastervolt plug |
| Temperature sensor | integrated, RJ12 connection |
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