question

Csaba Köböl avatar image
Csaba Köböl asked

RS450/100 too low numbers?

Hi,


I just extended my install with Victron MPPT 450/100 but getting very low numbers and doesn't seem to be right, my solar panels are JA 540MR in 5S oriented to the east, so from 8am-12pm I anticipate at least 500W (1100W/m2 installed x 0.1 sunny winter coefficient ) but getting 0-30W . Any idea why this is happening?

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mppt chargingmppt rs
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2 Answers
Matthias Lange - DE avatar image
Matthias Lange - DE answered ·

It is not easy to guess with only one screenshot.

Check the connection between the MPPT and the battery.

Is the remote on/off jumper plugged in correctly?

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Csaba Köböl avatar image Csaba Köböl commented ·
I will do the check when I'll be back there. Thanks.
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Csaba Köböl avatar image Csaba Köböl commented ·

Problem solved :) Thank you.1641119975492.png

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1641119975492.png (93.9 KiB)
klim8skeptic avatar image klim8skeptic ♦ Csaba Köböl commented ·
1 mppt reads a voltage of 0.9 v.

Bad kama.

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Matthias Lange - DE avatar image Matthias Lange - DE ♦ klim8skeptic ♦ commented ·
I guess there is nothing connected.
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Matthias Lange - DE avatar image Matthias Lange - DE ♦ Csaba Köböl commented ·
It would be good to know what the problem was. This will help others in the same situation.
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Alexandra avatar image
Alexandra answered ·

@Csaba Köböl

You seem to have a double instance of the mppt there (or at least the serial number is very similar), or do you have two in the system? If it is s doube instance then that may be the issue.

If you do have two, then the one is not registering panel voltage. So check those connections.

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Matthias Lange - DE avatar image Matthias Lange - DE ♦ commented ·

@Alexandra

The RS 450/100 has two MPP tracker inside and both are shown on the VRM portal.

(the RS 450/200 has 4 trackers)

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