Solar output more than rated Voc or I'm testing wrong? (1 Viewer)

[Mr Drizz]

So the solar panel I have has a Voc of 23.36v

But when I test it I'm getting 31-32v and I'm worried the Ctek will blow as that's only rated at 23v

I'm very aware I could be testing wrong.

 

[cyberyacht]

Stupid question, but you haven't got two panels wired in series, have you?

 

[Lenny HB]

Battery symbol is showing on your meter probably means battery is flat. Multimeters read high when the battery is flat.

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[Mr Drizz]

Stupid question, but you haven't got two panels wired in series, have you?

No just a single 130w panel.

 

[Richard n Ann]

In the last photo looks like the meter is on the 20ma scale but the socket you're using is the 10A one

 

[Mr Drizz]

Battery symbol is showing on your meter probably means battery is flat. Multimeters read high when the battery is flat.

I never knew that. That could well be the issue.

Thank you.

I will get back to you

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[tonyidle]

In the last photo looks like the meter is on the 20ma scale but the socket you're using is the 10A one

It is. Bit of a miracle the meter survived.

 

[Mr Drizz]

Well turns out it was the meters battery.

 

[tonyidle]

Well turns out it was the meters battery.

What about the switch selection & leads position?

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[Mr Drizz]

What about the switch selection & leads position?

I think this is correct?

 

[tonyidle]

Spot on.

 

[autorouter]

Standard test conditions for a solar panel are 1kW/m2, 25 degrees C, no wind. If it's colder and/or it's windy then the voltage is higher. The worst conditions for possible high voltage are a cold sunny winter day, which you might not expect.

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[Mr Drizz]

Welp, it seems the controller has died
It's just not taking solar input. Still works from the alternator. Totally user error for sure, an expensive one at that.