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JiminDenver's avatar
JiminDenver
Explorer II
May 11, 2015

Eco worthy 20a MPPT vs TS-MPPT-60 and series test

So I was able to run quick test comparing the Eco-w vs the MS today. I spent quite a bit of time trying to get the netbook and MSView to see the TS-MPPT-60, it did connect but didn't display more than the controller info, no voltages or anything yet. Luckily the Eco-w has it's display and I bought the remote display for the MS.

Both controllers went above 18a once I drew the bank down near 12v. That wasn't hard since the 8-D is on its last legs. I did notice that the eco-w was only showing 210w while the MS was showing 220w but the amps stayed the same. Even when there was two Eco-ws they swapped high and low controller on the same bank under load. I'll rerun the test to get any numbers needed.

It was a quick test and I didn't get a lot of measurements because I also wanted to run a series test with all three panels on the MS. All I can say is WOW. I used the 5000 BTU air conditioner as a load again and the biggest issue I had was keeping the controller in MPPT mode. It takes 3 minutes before the compressor will start and by the time it did the controller was in absorb. I had to turn on a heater to get back into the MPPT just to see max amps.

The three panels were pointed well but not pitched back far enough to be really lined up with the mid day sun. Even so I saw 48 amps in MPPT and 45a in absorb. 660 watts was the highest I saw out of the three 250w panels and may have seen more had the panels been leaned back farther. Once I turned off the heater the voltage of the battery started coming back up and the controller switched back in to absorb. While the AC ran there was a panels worth of power going to the bank, raising the voltage. the voltage climbed even faster when the compressor shut down. The voltage was up into the 14's when the compressor turned back on and it did so easy that I had to check the kill a watt to make sure it was on.

Being able to run the air conditioner and charge the battery at the same time was what I was hoping for. Right now I am running a equalization on the 8-D not that I expect much. Now to figure out the MSView.
  • scrubjaysnest wrote:
    @ JiminDenver use caution with MSview; was over on the solar-electric forums and spotted a post about a minor issue. The battery voltage column headers for max and min were reversed. I had noticed the same thing and didn't think much of it; but this minor issue has been around since it was reported to MS tech support in 2010. Makes you wonder about other things firmware updates that are included with MSview.
    I looked at my 12/14 MSView data and the values were correct. So apparently it got corrected.

    While I haven't had any issues with MSView the software could be much more usable and user friendly. The documentation could also be improved. Perhaps the firmware could also be improved.
  • I haven't had much of a chance to play lately. They reported one sunny day this month and I can confirm it. They say it will get better but the pattern will continue till fall. It's a good thing the system has the punch to push the bank around when the sun does shine and the ability to keep us off the generator when it doesn't. Seeing 12a during a afternoon rain made me as happy as when the A/C ran.
  • When you are camping above the clouds, how can it rain? :)

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