Alternateur Alpha Compact 28/150, régulateur Alpha Pro III inclus

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Prihranek 12%

Mastervolt

46628150

Alternator Alpha Compact 28/150, vključuje regulator Alpha Pro III

The Mastervolt Alpha Compact 28/150 alternator (24 V / 150 A), part of the current high-performance range, delivers optimal charging current even at low RPMs for demanding battery banks, including Lithium-ion. Its control via the Alpha Pro III regulator ensures a three-stage charging cycle and native integration into the MasterBus monitoring network.

Includes: Alpha Compact 28/150 alternator, Alpha Pro III charge regulator, battery temperature sensor (supplied without pulley).

Public priceGet pro pricing

2.746,32€

2.746,32€ ~~3.130,80€~~

DDV vključen Dostava se izračuna ob plačilu.

Na zalogi

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

Custom installation

Trust Skysat to install the equipment on board

Request a quote

Installers near you

thanks to our network of certified installers

Find an installer

Support service

Choose complementary installation support

Technical specifications

Serija	Alpha Compact
Nazivna napetost	24.0
Nazivni tok	150.0
Moč	4.2
Maksimalna hitrost vrtenja	16000.0
Vklopna hitrost	1700 RPM
Tok v mirovanju	28.0
Način montaže	Gimbal arm
Smer vrtenja	Clockwise
Galvanska izolacija	Non-insulated
Tip kontrole vzbujanja	Negative (N-type)
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
Temperatura zaustavitve polnjenja	130.0
Teža	7.9
Načrtovan za morsko okolje	Oui
Velikost izhodnega terminala (mm)	M8

Detailed description

Alternator Mastervolt Alpha Compact 28/150 (referenca 46628150) je sistem za polnjenje 24 V z visoko zmogljivostjo, namenjen morskim in industrijskim električnim napravam. Ta model se dobavlja brez kolesa, uporablja pa specifično magnetno zasnovo, ki zmanjšuje njegov volumen za 25 % in težo za 40 % v primerjavi s konvencionalnimi alternatorji. Vključen je zunanji regulator polnjenja Alpha Pro III za zagotovitev natančnega nadzora polnilskega cikla vseh vrst baterij.

Elektromehanske in toplotne zmogljivosti

Ta model zagotavlja nazivni tok 150 A pri 6000 vrtljajih na minuto (pri 25 °C) in zagotavlja proizvodnjo 28 A že pri vrtljajih motorja 1800 vrtljaji na minuto. Hitrost vrtljajev za vžig je nastavljena na 1700 vrtljajev na minuto, z največjo toleranco 16000 vrtljajev na minuto. Mehanska moč, ki jo zahteva odjemna gred (PTO), je 8,4 kW (11,4 KM). Hlajen z dvojnim notranjim ventilatorjem v odprti strukturi, alternator vzdrži delovno temperaturo do 120 °C. Vgrajen senzor temperature s priključkom RJ12 zagotavlja aktivno toplotno regulacijo. Priključki vključujejo dve pozitivni izhodni priključki M8, izolirano signalno povezavo W za merjenje vrtljajev in lastniško vtičnico Mastervolt za tok vzbujanja. Neto teža alternatorja je 7,9 kg, skupna teža z embalažo pa 11,4 kg.

Regulacija z Alpha Pro III in integracija MasterBus

Regulator Alpha Pro III nadzoruje izhodno napetost prek algoritma polnjenja v treh stopnjah (Bulk, Absorption, Float). Ta naprava kompenzira temperaturo in optimira polnjenje baterij iz svinca, gel, AGM in litij-ionskih. Faza absorpcije je avtomatsko časovno omejena (približno 30 minut za litij-ionsko tehnologijo) pred prehodom v vzdrževalno napetost. Ta regulator ima vgrajeno podporo protokolu MasterBus, kar omogoča nastavljanje napetostnih pragov, spremljanje podatkov o polnjenju v realnem času in upravljanje alarmov neposredno iz omrežja na ladji.

Položaj v razponu in primerjava

V katalogu Mastervolt se serija Alpha Compact odlikuje od klasične serije Alpha z optimiranim razmerjem moč/obseg in zmanjšano porabo goriva, ocenjeno na 30 %. V primerjavi z konkurenčnimi napravami, kot je serija Balmar XT v 24 V, ponuja Mastervolt Alpha Compact 28/150 prednost neposredne programske integracije zaradi vgrajenega omrežja MasterBus regulatorja, brez potrebe po dodatnem pretvorniku podatkov. Njegova lahka zasnova je namenjena predvsem tesnim motornim prostorom, kjer je potrebna visoka kontinuirana moč polnjenja, kjer bi tradicionalni alternator 150 A bil pretehtan ali prevelik.

Expert review

Pol CONIN

Odgovorni digitalni delavec

« Compact power and intelligent MasterBus regulation for 24V systems »

The Mastervolt Alpha Compact 28/150 alternator represents a major evolution for embedded power architectures requiring high-capacity 24V charging. Delivering a nominal current of 150 amperes, its true operational advantage lies in its ability to provide very high power even at low RPM or idle speed—a critical requirement for modern marine applications. Thanks to a patented magnetic design, it is up to 40% lighter (7.9 kg net for the alternator alone) and 25% more compact than a conventional model of equivalent power. Its reduced footprint greatly facilitates integration as a secondary alternator (PTO). Note that this specific reference (46628150) is supplied without a pulley, allowing the installer to select the multi-groove interface best suited to the marine engine belt.

The strategic value of this system lies in the included Alpha Pro III regulator, which transforms this power block into a true 3-stage+ smart charger (Bulk, Absorption, Float). In practice, this regulator makes all the difference: paired with the supplied temperature probe, it dynamically adjusts voltage to protect battery banks from overheating and optimize charge cycles. Fully configurable and natively compatible with the MasterBus protocol, it integrates seamlessly into onboard networks and efficiently manages high-acceptance chemistries, particularly Lithium-Ion (Li-ion), AGM, or Gel. By pairing it with a MasterShunt on the network, centralized monitoring and surgical-precision energy management are guaranteed.

Designed for the harsh conditions of engine rooms, the Alpha Compact features heavily protected internal electronics and wiring against oil, moisture, and dirt. Cooling is provided by a dual internal fan, supported by active thermal protection that modulates performance to preserve the equipment in environments with very high ambient temperatures. This alternator-regulator pair is the solution of choice for yachts and professional vessels requiring maximum electrical autonomy and ultra-fast charging. It delivers OEM-level reliability while optimizing mechanical efficiency, enabling up to a 30% reduction in fuel consumption related to power generation.

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Alternator Alpha Compact 28/150, vključuje regulator Alpha Pro III

2.746,32€

2.746,32€ ~~3.130,80€~~

Frequently asked questions

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What does the box contain when purchasing this alternator?

The packaging includes:

The Alpha Compact 28/150 alternator (delivered without pulley)The Alpha Pro III smart charge regulatorAn oil-resistant cable harness (1.5 m)A battery temperature sensor

What is the charging power of the Alpha Compact 28/150 alternator?

This high-performance alternator delivers a nominal current of 150 A at 24V (at 6000 RPM), corresponding to an electrical power output of 3.6 kW (with a required mechanical power of 8.4 kW). It can provide 28 A as early as 1800 RPM.

Is this alternator compatible with lithium batteries?

Yes, it is. With the included Alpha Pro III regulator, charging is perfectly suited to all battery types, including lithium-ion batteries, as well as open lead, Gel, and AGM models.

Is the alternator supplied with its mounting pulley?

No, this alternator is supplied without a pulley. The pulley must be selected based on your engine's specifications (power, crankshaft pulley diameter, and desired gear ratio).

What is the role of the Alpha Pro III regulator supplied with the alternator?

The Alpha Pro III regulator converts the alternator into a smart charger. It provides a 3-stage+ charging process (Bulk, Absorption, Float), compensates voltage based on battery temperature, and protects the system by reducing power in case of overheating.

How is the alternator protected against extreme temperatures in the engine compartment?

Unlike standard models, the Alpha Compact series features a dual internal fan system for highly efficient cooling. This allows it to maintain optimal performance with an operating temperature up to 120 °C.

What is the maximum permissible rotational speed for this model?

The alternator requires a starting speed of 1700 RPM to begin charging and can withstand a maximum rotational speed of up to 16,000 RPM.

Can I integrate this alternator into my existing MasterBus network?

Yes, the Alpha Pro III regulator is natively compatible with the MasterBus network. It is equipped with two RJ-45 data ports, enabling seamless communication with other devices in your electrical installation.

What is the weight of the Alpha Compact alternator?

The alternator stands out for its exceptional power-to-weight ratio, weighing only 7.9 kg.

How does the system react in case of alternator overheating?

The regulator continuously monitors the temperature. If the alternator reaches 85 °C, the regulator linearly reduces the charging power. If the temperature rises to 120 °C, it cuts off the charge completely to prevent any damage.

Should I install a temperature sensor on my batteries?

Yes, for lead-acid batteries (Gel, AGM, flooded), it is highly recommended to install the included temperature sensor. It adjusts the charging voltage and prevents thermal overcharging. Note that this sensor is not required for lithium-ion batteries.

Can I use this model to charge a 12V battery bank?

No, the Alpha Compact 28/150 model is exclusively designed for 24V DC service battery banks. For a 12V system, you must select a model from the 14V range.

What type of mechanical mounting is used on this alternator?

This specific model is designed for mounting on a stern drive arm, which is a very common standard on many marine engines.

Does the Alpha Compact 28/150 alternator have galvanic isolation?

By default, this model is not galvanically isolated. However, if your installation requires an isolated mounting (for example on an aluminum hull), insulating bushes (optional kit) can be used during installation.

What are the direct connections on the alternator?

The alternator is equipped with:

Two M8 positive output terminalsA connection for the W signal (tachometer)A Mastervolt plug for the field currentAn RJ12 port to connect the temperature probe

Is it possible to connect the regulator to a MasterShunt?

Yes. By connecting the regulator and the MasterShunt to the same MasterBus network, the regulator will adjust its charging voltage based on the actual voltage measured at the battery terminals, compensating for voltage losses in the cables.

How to prevent the alternator belt from slipping under heavy load?

If the alternator demands too much torque and causes the belt to slip, you can activate the Power Curve function via the MasterAdjust interface. This reduces the charging current and minimizes the mechanical load on the engine.

Which direction must this alternator rotate?

The Alpha Compact 28/150 alternator is designed to operate with a clockwise rotation direction (clockwise rotation).

What to do if the Alpha Pro III regulator flashes?

The LED indicator flashes on the regulator serve as alarm signals. For example, 3 short flashes every 2 seconds indicate that the field current is too high, while 2 flashes indicate an overvoltage condition on the battery.

How does temperature compensation work for a 24V system?

The controller automatically adjusts the charging voltage based on battery temperature. For a 24V bank, compensation is -60 mV per degree Celsius (calculated from -30 mV/°C for 12V), ensuring safe charging and extending battery life.