question

karl avatar image
karl asked

MultiPlus 24/3000/70-50 Inverter Configuration Type

What type of inverter configuration is incorporated in the MultiPlus 24/3000/70-50?
Does it incorporate an isolating transformer?

or is it transformerless?

If it incorporates a transformer can you please let me know the impedance of the load side winding?

I am attempting to calculate the external part of the fault loop impedance (equivalent grid side impedance) for an installation (house load) that is connected to an EasySolar 24/3000/70-50 (which incorporates a MultiPlus 24/3000/70-50) as its sole source of supply?

Thank you for your time and help with this.

Multiplus-IIEasySolar All-in-One
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2 Answers
Rob Duthie avatar image
Rob Duthie answered ·

Hi Karl

Yes all Victron inverter chargers have an toroid isolating transformer. The impedance i don't know.

I just use a Fluke power multi tester for earth line impedance testing, as there is so many variables, any connections add to the impedance etc.

I had installation of a easy solar 12/ 1600/70 watt unit which had a loop line test of 18-20Ampsat the the end of circuit, or furthest socket outlet.

Measure with a meter to get a ball park figure Current = Voltage / Resistance = Amps


Regards

Rob D

NZ

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Matthias Lange - DE avatar image
Matthias Lange - DE answered ·

The transformer is only used in inverter mode. If grid is available it will be pass-through directly to the loads via relays:

(This picture is in the manual and on the backside of the front panel.)


multi123000.png (141.3 KiB)
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