question

Lars Lindegaard Mikkelsen avatar image
Lars Lindegaard Mikkelsen asked

MultiPlus 48/3000/35 overload and high temperature?

We are testing a 3 phase offline MultiPlus 48/3000/35 system.

Issue: With a 3 * 2800 W load (heater - power factor ~ 1) we see overload and high temperature alarms? The system also eventually shuts down?

Conditions:
- Room temperature: 21 C
- Grid: Off
- PV: Off



Best regards,
Lars Lindegaard Mikkelsen



MultiPlus Quattro Inverter Charger
1559904831146.png (1.8 MiB)
2 |3000

Up to 8 attachments (including images) can be used with a maximum of 190.8 MiB each and 286.6 MiB total.

1 Answer
mihair avatar image
mihair answered ·

The Multiplus 3000 is indeed overloaded because max RMS power is 2400W.

2 comments
2 |3000

Up to 8 attachments (including images) can be used with a maximum of 190.8 MiB each and 286.6 MiB total.

Lars Lindegaard Mikkelsen avatar image Lars Lindegaard Mikkelsen commented ·

Thanks -> Non-linear load, crest factor 3:1 :-)

0 Likes 0 ·
mihair avatar image mihair Lars Lindegaard Mikkelsen commented ·

There is nothing special here because you have loaded the Multi with pure resistor loads, hence crest factor 1.414

I do not know form where it comes your 3:1 number ...

0 Likes 0 ·