High power inverter/charger

Mastervolt, the Dutch specialist in autonomous power systems, has announced a new 48 Volt combined inverter and battery charger, the Mass Combi Ultra 48/3500-50.

The new model provides up to 3,500W of AC power and 50A of DC charging current. This latest addition means that the Ultra range now covers all three main voltages commonly found in leisure and professional vessels and vehicles as well as specialist installations that need to operate away from mains power.

The Mass Combi Ultra marries together a powerful and intelligent battery charger with a silent and efficient inverter, working through a versatile and seamless transfer system. In addition, the Ultra series also carries a secondary battery charger for dedicated starter batteries. Unlike the 12V and 24V models, the new 48V model is not equipped with an internal solar charger. Powerful external 48V solar charge regulators are available from Mastervolt.

The new 48/3500-50 model is aimed at high power applications, such as commercial vessels and large vehicles, yet also at installations where a 48-Volt system is being used for electric propulsion, a sector in which Mastervolt has long been a pioneer.

Mass Combis have been carefully designed for users who want dependable off grid AC power, which automatically switches from one source to another as AC loads vary. Many years of research and feedback has led to an advanced, three-step battery charger, which uses an algorithm to maximise the service life of the batteries whilst recharging. The charger is compatible with every type of modern battery, including Mastervolt’s own cutting-edge Lithium Ion Ultra range.

The inverter runs silently thanks to its proprietary high frequency V6 technology, and can handle peak loads of 200% as heavy-draw items such as air-con pumps start up. The AC output is a clean sine wave, with no spikes or troughs, so the most sensitive equipment can run without any fear of glitches or dropouts. During the night, the inverter can run at 50% load without the need for fan cooling, adding to a quiet night’s sleep.

Robustly built from top quality components, and in a case that can operate efficiently even in a hot engine room, Mastervolt claims the new 48/3500-50 is the dependable heart of a modern 48-Volt system.

Mastervolt designers consider the initial installer as much as the end user, so the Mass Combi Ultra is in a single, compact case with professional-grade and durable connections. There are two AC inputs, and two AC outputs, making it possible to supply heavy loads directly from the grid or generator without inadvertently draining the batteries. There is also a power assist function, which modifies the input when the link to shore power is poor, or has a low fuse rating.

Visit Mastervolt at Seawork International 2016 on stand PB59.