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The ARCO Zeus A8000-48V alternator turns on at lower RPMs, runs cooler and provides more power than other 48V alternators that are larger and heavier. This alternator continuously generates over 3kW (55 Amps) 2,500 RPM, and almost 6kW (111 Amps) at 4,000 Alternator RPM. Put in real world terms, a marine diesel engine charging at 1,200 RPM with a 3.13:1 pulley ratio is generating just over 5kW (97 Amps), and a Mercedes Sprinter at 750 RPM with a 3.21:1 ratio is generating over 3kW (55 Amps)!
Instead of using rotors designed for 48 volts, many competitor’s alternators simply use their 12V rotors which is less efficient and limits output at all RPMs. In this scenario, your external smart regulator must drastically reduce field, by as much as 78%. If this is not done correctly, you run the risk of destroying the unit and damaging other components in your system. ARCO utilizes a native 48V rotor and field current. This results in our 48V alternator running cooler than competitor’s 48V alternators, having a direct impact on the alternator’s lifespan.
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No issues with install and regulator installation.
At first has some rpm reading issue but it was easily fixed by tweaking min duty setting thanks to the support team at yacht rigger.
Installed with an APS alternator.
While the review is for lugs, its actually for a lot more than that. I upgraded from AMGs to new lithium batteries. I bought these 4/0 lugs but also the 4/0 cables, fuses, cable shrink wrap and more. Basically everything I needed for the project. A huge shout out to the Yacht Rigger as being a DYI'er there were bits and pieces I needed last minute that got shipped right away and then a few items that I swapped out. They made this super easy.
After a lot of research, bought two of these units to go along with new Balmer XT-CR-170 alternators. Installation was a challenge but only due to having to run wires from one side of boat to the other but the support from Yacht Rigger electrical department was stellar. I had a couple of calls with Mike and he walked me through setup and configuration.
Using this for a Starlink install. Looks to be easy to use and effective in keeping water out of the hole for the cable.
Super high quality products! Easy to install with the easy-to-follow instructions and expert guidance from The Yacht Rigger. (Be sure to turn the shore power off and unplug the cord!)