Powerbook Systems
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Complete comfort on theYour ship: 30-40 ft motor Longer weekend trips, at night in a harbour Details: Comfortable onboard facilities Your sailing profile Generally sailing for a weekend or midweek, sometimes anchored without access to shore power so you need enough power to cruise for two days. You also desire a range of comforts onboard, including a large refrigerator, microwave/oven combination and high-end coffee/espresso machine. Internet and email facilities are on your wish list as is (partial) navigation using your laptop, a good sound system and occasionally watching your favourite TV show. Your onboard consumers include: DC consumers: description total x capacity x hour daily consumption Navigation and deck lighting Navigation and communication equipment 3 x 40 Watt x 12 hour Interior lighting 15x15 Watt x 4 hour = 0.96 kWh = 1,44 kWh = 0.90 kWh Water, shower, toilet and bilge pumps Several small consumers 2 x 20 Watt x 4 hour Microwave/oven combination Coffee/espresso machine I x 1500 Watt x 0.2 hour = 0.30 kWh

WEEKENDS AWAYDAY TRIPS • WEEKENDS AWAY • FAR-OFF DESTINATIONS • CIRCUMNAVIGATION You do not want to have to think about what to use or when. Simultaneous power is best. Your navigation station includes a GPS, plotter, speedometer and depth gauge. Your yacht has several pumps for water, shower, toilet and bilges. You require optimum ease of operation; not only centrally located but also next to your bed or in the engine room.

Batteries: 4 x Mastervolt MVG 12/200 Ah • The total of DC and AC consumers requires around 5.4 kWh. Totally discharging the batteries is not advisable so opt for a maximum of 50% discharge, i.e. 10.9 kWh. * Taking into account the various appliances and required peak loads we suggest a 24 V system. • The required battery capacity is therefore 10.900 Wh/24 V = ± 450 Ah. • Four 12 V MVG batteries of 200 Ah ensure you have 400 Ah onboard. Battery charger and converter: I x Mastervolt Mass Combi 24/4000-120 * 450 Ah needs at least 25% of the battery capacity for charging power, so in this case...

Phone changer Laptop charger Hair drier O MasterView System Q MasterView Easy Q Switch Input 4 PCB Q Shore power connection Q Earth leakage shore power Q Mass Gl isolation transformer Q Mass Combi Q Service battery 24 V Q MasterShunt, DC Distribution, Digital DC © Digital DC Saloon lights Marine telephone Radio Refrigerator Phone charger Laptop changer