question

janvi avatar image
janvi asked

LOM Detection

Some Multiplus advertising claims, that UPS transfer switching gap is below 20mS:

https://www.victronenergy.de/inverters-chargers/multiplus-12v-24v-48v-800va-3kva

How can I use the internal LOM signal to switch off big optional loads by using external contactors ?

Is there a more detailed description on what the Multiplus Type A and Type B LOM Algorithms exactly do ?

https://www.victronenergy.com/live/ve.bus:grid-codes-and-loss-of-mains-detection


Multiplus-IIMultiPlus Quattro Inverter Chargerswitch
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2 Answers
janieronen avatar image
janieronen answered ·

Often that have been done by using AC-OUT2 signal for controlling larger relays. They drop out instantaneously when grid is not available.

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Alexandra avatar image
Alexandra answered ·

@Janvi

LOM detection is for the inverter to disconnect from grid.

You can use the assistants and program the K1 or other relays that are available for controlling contactors based on AC availability or loads or battery SOC.

https://www.victronenergy.com/live/assistants:overview_of_available_assistants#advanced_assistants

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