Mastervolt Powerbook 2023 EN

n Ohm Unit for electrical resistance, indicated by the symbol Ω. The electrical resistance of an electrical conductor is the opposition to the passage of an electric current through that conductor. n Ohm’s law Gives the relationship between voltage (U), current (I) and resistance (R). In formula terms this is expressed as U= I x R . If two of the three values are known, the third can be calculated. n Overload A concept related to the safety of an inverter, generator or power connection. A fuse, for instance, ensures against overload. All Mastervolt inverters have electronic protection against overload. n Parallel connection In a parallel connection the current can flow through multiple circuits. By parallel connecting batteries (positive to positive, negative to negative), the capacity of the battery set is increased, while voltage stays the same. For example, while two 12V/55Ah batteries connected in parallel have a voltage of 12 volt, the capacity is 55 + 55 = 110 Ah. n Peak power The maximum current that can be supplied by an inverter for short periods of time. This is often necessary, as electric motors can consume up to ten times their nominal power when starting up. Mastervolt inverters can deliver a high peak current, often reaching two to three times their nominal capacity. n Peukert The name of a German scientist who in 1897 observed that a battery supplies progressively less power as the discharge current increases. Peukert created a formula that gives the number of amp- hours a battery can supply at a given discharge current and time. Mastervolt battery monitors all take Peukert’s law into account, ensuring that you always have a correct overview of your battery’s status. P O TECHNICAL TERMS n Inverter Converts 12, 24 or 48 volt battery power to alternating current at 230 V/50 Hz (or 120 V/60 Hz). This allows appliances such as computers, microwave ovens and TVs to be powered without the need for a grid connection or generator. n Isolation transformer Converts shore power voltage to a higher, lower or equal value to ensure that there is galvanic isolation between the shore power connection and the onboard electrical system. This prevents corrosion and increases safety. n Kilowatt (kW) Unit for electrical power equivalent to 1000 watt. Ten 100-watt light bulbs consume one kilowatt. n Kilowatt-hour (kWh) One kW of electricity used in one hour. This is the most common measurement of power consumption. n LED (light emitting diode) Electronic light with very low power consumption. LEDs are generally available in many different colours and sizes. Mastervolt uses them as signal lights on battery chargers and inverters. The latest generation of LEDs can be used as lights as well and are very low in use of energy. n Lithium Ion battery Lithium Ion batteries have a high energy density and are perfect for cyclic applications. Compared to traditional lead-acid batteries, Lithium Ion batteries offer savings of up to 70 % in volume and weight, while the number of charging cycles is three times as large. Another major benefit of the Mastervolt Lithium Ion battery is that it is equipped with an integrated Battery Management System. The system keeps all the individual cells perfectly balanced, and ensures a long battery lifespan. n Lloyd’s approval Lloyd’s Register of Shipping is a British classification society for yachts, professional shipping, drilling platforms, etcetera. Numerous insurance companies require large vessels to be approved by Lloyd’s. This means that the vessel and the onboard equipment have to satisfy stringent requirements. n MasterBus MasterBus is Mastervolt’s advanced standard for data communication and integration of Mastervolt components within your electric system. Advantages include complete system integration, easy operation and monitoring, and simple installation with fewer cables. A MasterBus network can be easily extended in a later stage. n NiCad batteries Containing nickel and cadmium, this type of battery is unsuitable for use on boats due to the high charge voltage required. NiCad batteries will soon be banned because of their cadmium content. N.B. All NiCad batteries are considered to be chemical waste. n NMEA 2000 NMEA 2000 is a plug & play communications standard used for connecting marine equipment and displays within boats. Communi- cation runs at 250 kb-per-second and allows any device to talk to any display, or other device compatible with NMEA 2000 protocols. NMEA 2000 is compatible with the J1939 CANbus network, used on road vehicles and fuel engines. n No-load consumption Power consumed by an inverter when it is not powering any equipment. This is just a few watts with modern Mastervolt inverters and Combis. The lower the no- load consumption, the less power is used by the inverter. K M N L 149