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Mastervolt

46228112

Alternator Alpha Compact 28/110 VP

The Mastervolt Alpha Compact 28/110 VP alternator (24 V / 110 A), from the current ultra-compact range, delivers high power even at low engine idle (40 A at 1800 rpm) for rapid charging of lead-acid and lithium battery banks. Specifically designed to mount directly on Volvo Penta engines (D4 to D13 series), it requires the addition of the external Alpha Pro III regulator to manage the three-stage charging cycle and ensure integration with the MasterBus network.

Includes: 28/110 VP alternator, multi-groove pulley (supplied without Alpha Pro III charge regulator or mounting bracket).

Public priceGet pro pricing

1.986,85€

1.986,85€ ~~2.329,20€~~

DDV vključen Dostava se izračuna ob plačilu.

Na zalogi

Free pickup point from €150 in France
Pickup at Skysat possible

Custom installation

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Installers near you

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Support service

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Technical specifications

Serija	Alpha Compact
Nazivna napetost	24.0
Nazivni tok	110.0
Moč	3.1
Maksimalna hitrost vrtenja	15000.0
Vklopna hitrost	1400 RPM
Način montaže	Gimbal arm
Smer vrtenja	Clockwise
Galvanska izolacija	Non-insulated
Tip kontrole vzbujanja	External (via Alpha Pro regulator)
Podpora senzorja temperature v ohišju	Oui
Minimalni premer vlečnega kolesa	53.3
Maksimalni premer vlečnega kolesa	71.1
Minimalno razmerje škripca	2.25
Maksimalno razmerje vretenc	3.0
Način hlajenja	Dual integrated fans
Število hlajilnih ventilatorjev	2.0
Maksimalna delovna temperatura	120.0
Teža	7.4
Načrtovan za morsko okolje	Oui
Velikost izhodnega terminala (mm)	M8

Detailed description

Mastervoltov alternator Alpha Compact 28/110 VP je visoko zmogljiva rešitev za polnjenje, ki je posebej zasnovana za zahtevna morska okolja. Deluje na 24V omrežju, pri čemer zagotavlja nazivni tok 110 A z impresivno močjo 6,2 kW (8,3 KM). Zasnovan tako, da se popolnoma prilega motorjem Volvo Penta z nameščenim vrvnim okvirjem, zagotavlja ta alternator hitro in učinkovito polnjenje vašega baterijskega sistema že od 1400 vrtljajev na minuto (tr/min) do največje hitrosti 15000 tr/min. Opomba: ta model se dobavlja brez regulatorja Alpha Pro III, ki je nujen za optimalno upravljanje napetosti.

Termična zasnova in kompaktna izvedba

V nasprotju z alternatorji iz klasične serije Alpha, ki so težji in večji, se serija Alpha Compact odlikuje z patentirano magnetno zasnovo, ki omogoča ohranjanje majhnih dimenzij hkrati z odpornostjo proti visokim temperaturam. Z maso 7,4 kg vključuje ta model dvojni ventilator za hlajenje, ki omogoča varno delovanje do največje temperature 120 °C. Ta napredna termična upravljava zagotavlja kontinuirano proizvodnjo energije, tudi v najbolj omejenih in slabo prezračevanih motornih prostorih.

Povezljivost in integracija sistema

Električna namestitev alternatorja Alpha Compact 28/110 VP je olajšana z robustnimi priključki, prilagojenimi morskim standardom. Ima dve pozitivni izhodni priključki M8, priključek za signal W prek izolirane leme in namensko vtičnico Mastervolt za inducirani tok. Spremljanje temperature zagotavlja vgrajen senzor z vtičnico RJ12, ki omogoča gladko komunikacijo z električnim omrežjem, ko je povezan z ustreznim regulatorjem. Čeprav ni galvanizirano izoliran in se vrtijo v smeri urinega kazalca, je njegova mehanska zasnova idealna za nadgradnjo sistemov pogona, ki zahtevajo visoko zmogljivost polnjenja.

Documentation

Type	Nom
	FR - Manuel d'installation et d'utilisation - Alternateur Alpha Compact 28/110 VP
	EN - Manuel d'utilisation et d'installation - Alternateur Alpha Compact 28/110 VP
	FR - Manuel d'installation et d'utilisation - Alternateur Alpha Compact 28/110 VP
	EN - Manuel d'utilisation et d'installation - Alternateur Alpha Compact 28/110 VP

Expert review

Pol CONIN

Odgovorni digitalni vodja

« Optimal power and compactness for Volvo Penta 24V propulsion systems »

This Alpha Compact 28/110 VP alternator from Mastervolt is a key component for vessels equipped with Volvo Penta engines requiring high 24V power demand. Its true advantage lies in its compactness-to-power ratio: weighing only 7.4 kg, it delivers 110 A thanks to its dual integrated fans and patented magnetic design, which push the operating temperature limit to 120 °C. During installation, the gimbal arm mount fits perfectly on compatible engine blocks. Note, however, that this model is supplied without the Alpha Pro III regulator, which is absolutely essential for configuring the network and protecting the battery bank from overcharging. Its integration with an RJ12 temperature probe ensures intelligent thermal regulation, critical for modern service battery banks.

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Alternator Alpha Compact 28/110 VP

1.986,85€

1.986,85€ ~~2.329,20€~~

Frequently asked questions

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What is the role of the Alpha Compact 28/110 VP alternator?

The Mastervolt Alpha Compact 28/110 VP alternator is designed to quickly and efficiently recharge your marine battery bank. It delivers a nominal current of 110 A, making it ideal for demanding marine environments.

Is the Alpha Pro III charge regulator supplied with the alternator?

No, this alternator is supplied without the Alpha Pro III charge regulator. However, this regulator is essential for optimal voltage management and secure battery charging.

What system voltage does this alternator operate at?

This model is specifically designed for electrical systems operating on a 24V DC network.

Which marine engine brand is this alternator compatible with?

The Alpha Compact 28/110 VP alternator is specifically designed to fit Volvo Penta marine engines perfectly, thanks to its mounting system on the stern drive.

What is the maximum power output of this equipment?

It delivers a current of 110 A at 24 V (approximately 3 kW) and requires a drive power of 6.2 kW (8.3 HP), enabling very fast charging of high-capacity battery banks.

Can the alternator withstand high temperatures in a poorly ventilated engine compartment?

Yes, the Alpha Compact series features a patented magnetic design and dual cooling fans. It can operate safely up to a maximum temperature of 120 °C.

What is the weight of the Alpha Compact 28/110 VP alternator?

Despite its high performance, this alternator remains very compact and has a contained weight of 7.4 kg.

From what engine RPM does the alternator start charging?

The generation (or activation) speed for this model is 1400 RPM. From this RPM, it starts producing power to recharge your batteries.

What is the maximum tolerated rotation speed for the alternator?

The Alpha Compact 28/110 VP alternator can support a maximum rotation speed of up to 15,000 RPM.

How is the device cooled?

Cooling is provided actively by an integrated dual-fan system, ensuring optimal heat dissipation even in confined spaces.

How to connect the alternator temperature sensor?

The temperature sensor is built into the alternator. It connects simply via an RJ12 connector, linking it to the charge regulator for smooth communication with the electrical system.

What are the available connection terminals for the positive output?

To ensure safe power transfer compliant with marine standards, the alternator is equipped with two M8-format positive output terminals.

Does this alternator have galvanic isolation?

No, this alternator model is not galvanically isolated. This must be taken into account when designing your marine electrical system.

How to retrieve the tachometer signal (W signal)?

The W signal, used for the tachometer, is easily retrieved via a quick connection using an insulated terminal designed for this purpose on the alternator.

What is the intended rotation direction for this alternator?

The Alpha Compact 28/110 VP alternator is designed to rotate clockwise (CW).

What type of mounting is used for engine installation?

This specific model for Volvo Penta engines uses a gimbal arm mounting (saddle mount), ensuring robust and vibration-resistant installation suitable for marine conditions.

How to connect the field current (excitation)?

The connection of the induced current (field current) is made via a dedicated Mastervolt connector, ensuring a reliable connection with the regulator.

What to do if my installation requires an isolated mounting?

If an isolated mounting is required, you must use insulating bushings (reference kit 48420242) to insert on each side of the mounting holes, and add a terminal lug for the ground cable between one of the bushings and the alternator.

What to do if the belt makes abnormal noise or slips?

An abnormal noise often comes from a mechanical issue with the belt. It is recommended to:

Check the alignment of the pulleys.Check the belt tension.Inspect the condition of the idler pulley.

Why does the alternator not charge at its maximum capacity when hot?

It is normal for the charging current to decrease slightly when hot (up to 15% less) to protect internal components. Conversely, when cold, charging can be up to 20% higher than the nominal value.