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

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Mastervolt

46628150

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

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

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

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2.746,32€

2.746,32€ ~~3.130,80€~~

UK Isporuke izračunate u trenutku plaćanja.

Na zalihi

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

Custom installation

Trust Skysat for onboard equipment installation

Request a quote

Installers near you

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Support service

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Technical specifications

Serija	Alpha Compact
Nazivni napon	24.0
Nazivna struja	150.0
Snaga	4.2
Maksimalna brzina vrtnje	16000.0
Brzina uključivanja	1700 tr/min
Struja u mirovanju	28.0
Stil montaže	Bras à cardan
Smjer rotacije	Sens horaire
Galvanska izolacija	Non isolé
Tip kontrole polja uzbude	Négatif (N-type)
Podrška za senzor temperature kućišta	Oui
Minimalni promjer zamašnjaka	53.3
Maksimalni promjer zamašnjaka	71.1
Minimalni omjer koloture	2.25
Maksimalni omjer remenice	3.0
Metoda hlađenja	Double ventilateur intégré
Broj ventilatora hlađenja	2.0
Maksimalna radna temperatura	120.0
Temperatura prekida punjenja	130.0
Težina	7.9
Namijenjeno za morsku okolinu	Oui
Veličina izlaznog priključka (mm)	M8

Detailed description

Alternator Mastervolt Alpha Compact 28/150 (šifra 46628150) je sustav za punjenje 24 V visokog kapaciteta namijenjen morskim i industrijskim električnim instalacijama. Isporučuje se bez remenice, a ovaj model koristi specifičnu magnetske konstrukciju koja smanjuje njegov volumen za 25 % i težinu za 40 % u odnosu na konvencionalne alternatore. Isporučuje se s vanjskim regulatorom punjenja Alpha Pro III za osiguranje precizne kontrole punjenja svih vrsta baterijskih parkova.

Elektromehaničke i termičke performanse

Ovaj model isporučuje nazivnu struju od 150 A pri 6000 o/min (na 25 °C) i osigurava proizvodnju od 28 A već pri minimalnim okretajima motora od 1800 o/min. Brzina okretanja pri pokretanju postavljena je na 1700 o/min, s maksimalnom tolerancijom od 16000 o/min. Mehanička snaga potrebna na uzimanju snage (PTO) iznosi 8,4 kW (11,4 KS). Hlađenje se obavlja dvostrukim unutarnjim ventilatorom unutar otvorene konstrukcije, a alternator podržava radnu temperaturu do 120 °C. Ugrađena temperaturna sonda s RJ12 priključkom osigurava aktivnu termičku regulaciju. Priključnica uključuje dvije izlazne pozitivne stezaljke M8, izoliranu W signalnu vezu za brojač okretaja i vlasnički Mastervolt priključak za struju uzbude. Neto težina alternatora iznosi 7,9 kg, dok ukupna težina s pakiranjem iznosi 11,4 kg.

Regulacija Alpha Pro III i integracija MasterBus

Regulator Alpha Pro III kontrolira izlazni napon putem algoritma punjenja u tri faze (Bulk, Absorption, Float). Ovaj uređaj kompenzira temperaturu i optimizira punjenje olovnih, Gel, AGM i litij-ionskih baterija. Faza apsorpcije automatski je vremenski ograničena (oko 30 minuta za litij-ionsku tehnologiju) prije prelaska na održavanje napona. Regulator ima ugrađen protokol MasterBus, omogućavajući konfiguraciju naponskih pragova, praćenje podataka punjenja u realnom vremenu i upravljanje alarmima izravno s brodskog mrežnog sustava.

Pozicioniranje u asortimanu i usporedba

U katalogu Mastervolt serija Alpha Compact se razlikuje od klasične serije Alpha optimiziranim omjerom snaga/zauzeće i procijenjenom uštedom goriva od 30 %. U usporedbi s konkurentskim uređajima poput serije Balmar XT u 24 V, Mastervolt Alpha Compact 28/150 nudi prednost izravne softverske integracije zahvaljujući ugrađenom MasterBus mrežnom protokolu regulatora, bez potrebe za dodatnim konvertorima podataka. Njegova lagana konstrukcija posebno je namijenjena uskim motornim odjeljcima koji zahtijevaju kontinuirano visoku snagu punjenja, gdje bi tradicionalni alternator od 150 A bio pretežak ili prevelik.

Expert review

Pol CONIN

Digitalni odgovorni

« 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 charging capacity under 24V. Delivering a nominal current of 150 amperes, its true operational asset 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). It should be noted that this specific reference (46628150) is supplied without a pulley, allowing the installer to select the multi-groove interface perfectly 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 genuine 3-stage+ smart charger (Bulk, Absorption, Float). In real-world use, 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 manages high-acceptance chemistries with outstanding efficiency, particularly Lithium-Ion (Li-ion), AGM, or Gel. By pairing it with a MasterShunt on the network, centralized supervision 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 high-ambient-temperature environments. 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, regulator Alpha Pro III uključen

2.746,32€

2.746,32€ ~~3.130,80€~~

Frequently Asked Questions

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What is included in the box 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 (the required mechanical power being 8.4 kW). It can provide 28 A as early as 1800 RPM.

Is this alternator compatible with lithium batteries?

Yes, absolutely. Thanks to 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+ charge (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 is equipped with a highly efficient internal dual-fan system. This allows it to maintain optimal performance with an operating temperature up to 120 °C.

What is the maximum tolerated rotation speed for this model?

The alternator requires a starting speed of 1700 RPM to begin charging, and it can withstand a maximum rotation 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 temperature. If the alternator reaches 85 °C, the regulator linearly reduces charging power. If the temperature climbs to 120 °C, it cuts off charging completely to prevent any damage.

Do I need to 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, 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 gimbal 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 sleeves can be used (optional kit) 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 on 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 enable the Power Curve function via the MasterAdjust interface. This reduces the charging current and minimizes the mechanical load on the engine.

Which direction should 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 is flashing?

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

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.