Engine start inrush current measurements.The scope is at 50mV/div. The shunt is 50mV for 500A. On the time axis we have 200ms/div. We see around 60mV so 600A inrush, quickly reducing to 300A after 200ms and the engine is running after 800ms.This is a large 5.7 liter Hemi V8 engine with a 1.4kW starter. In the graph you can see bumps upwards that repeat at similar intervals. I think this is the compression in the cylinders?
I previously called these gadgets a scam or at least a barely allowed trick and I did receive some feedback on that, asking if a company like Victron really is selling a scam product so let me put this into context with this post: I call these gadgets scams or
You can buy a LIM for $1000-$2000, which is a great deal for a hospital operating room but a bit stiff for a sailboat where nobody dies when AC power is disrupted. A couple remarks before diving in: the diagram above is conceptual, not an actual schematic, which requires
In part one we arrived at the input bus where incoming AC power, if any, is present. This incoming power is used to charge the batteries and/or to feed the distribution panels for use throughout the boat. Multiplus inverter/chargers I recommend two identical units that are special-ordered from
For these posts I am using a diagram that closely follows our actual installation aboard Jedi. In this post I discuss the input side: the shore power and generator inputs, the transfer switch, the input bus and the P conductor busbar. I present a detailed description of an installation that