Alternátor Alpha Compact 28/150 Volvo Penta

This alternator delivers a massive charging current of 150 A at 24 V, requiring mechanical power (PTO) of 8.4 kW (11.4 HP).

No, this alternator is supplied bare. Adding the external Alpha Pro III charge regulator is strictly required to control the field current and enable the three-stage smart charging.

Yes, the Alpha Compact series offers an excellent power-to-size ratio enabling ultra-fast charging of high-capacity service battery banks, including Lithium, AGM, and Gel technologies.

This specific model (reference 46228152) is specially calibrated and designed to integrate directly with Volvo Penta engine mounts.

The Alpha Compact 28/150 alternator weighs 7.9 kg.

The charge starts at low engine speeds. The cut-in speed (generation speed) is 1700 rpm (alternator rotation speed).

The Alpha Compact 28/150 alternator can tolerate a maximum rotational speed of up to 16,000 RPM.

It is equipped with a dual integrated fan and features a patented magnetic design, allowing it to maintain optimal performance even in confined environments with high temperatures.

This model is designed for harsh environments and can withstand up to 120 °C in continuous use.

No, this specific model of Alpha Compact alternator is not galvanically isolated.

The connectivity is designed for high power with a dual positive M8 output terminal. It is imperative to use cables of appropriate cross-section to handle the 150 A.

The alternator has a dedicated insulated terminal for the W (RPM) signal to simplify connection and tachometer reading.

Yes, a temperature sensor is directly integrated into the alternator. It communicates with the charge regulator via an RJ12 port.

When configuring your system via MasterAdjust, go to the System section and set the Temp. sensor parameter to Dynamo (specific to Alpha Compact models).

If an isolated mounting is required for your installation, you must use insulating sleeves. The recommended insulation kit for Alpha Compact 28/150 and 28/110 models is part number 48420242.

No, this model is a 24 V DC alternator. It is exclusively designed to charge battery banks operating at 24 volts.

The field current (induced) is controlled by the external Alpha Pro III regulator, which connects easily to the alternator via a dedicated Mastervolt plug.

If the belt slips, it reduces the load capacity and generates noise. You must check the alignment of the pulleys and ensure the belt tension is correct. Using an automatic tensioner is highly recommended for these power levels.

The alternator itself is controlled by the Alpha Pro III charge regulator. This external regulator is fully MasterBus compatible, enabling monitoring and configuration of the charge on your marine network.

Several causes are possible: check that the Alpha Pro III regulator is properly connected and functional, inspect the condition and tension of the drive belt, and ensure that the battery terminals are clean and securely tightened.