question

phtr avatar image
phtr asked

3-phase load shedding on AC-Out-2

Hi there,

I'm trying to configure load shedding using relay assistants for AC-Out-2 on a 3-phase Quattro-II system. AC-Out-2 shall be dropped on all three phases/Quattros as soon as a device goes into an overload alarm or when a pre-alarm exists for several seconds.

For this I configured the wizards shown in the screenshot. However, a test with Overload Pre-Alarm on one phase did not drop AC-Out-2 of all or even the affected phase.

What am I doing wrong?

Many thanks in advance!

quattro-ac-out-2-config.jpg


MultiPlus Quattro Inverter ChargerRelayAssistantsbalanced ac-load
2 |3000

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1 Answer
Alexandra avatar image
Alexandra answered ·

@phtr

On conditions are prioritized over off conditions. You have given it two on conditions - one condition was met, so it remained on.

https://www.victronenergy.com/live/assistants:start#combining_multiple_assistants


2 comments
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phtr avatar image phtr commented ·
Now I get it, thanks!
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phtr avatar image phtr commented ·
@Alexandra I'm still a bit unsure how to solve this, thinking about the following situations:
  • Alarm and Pre-Alarm rules => how to turn relays back on?
  • Only using rules for Pre-Alarm => What if inverter directly goes into alarm, skipping pre-alarm?
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