Phoenix Inverter VE.Direct 12/800 120V – DC input inrush current specification?

DIY
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1

I’m trying to find the DC-side inrush current specification for the Phoenix Inverter VE.Direct 12/800 120V (article number PIN121800500), but I can’t find it anywhere in the datasheet or product manual. https://www.victronenergy.com/inverters/phoenix-inverter-vedirect-250va-800va

Specifically, I’m looking for the current spike that occurs on the DC input when the inverter is first connected to a DC source (e.g. a battery), under the following conditions:

  • Inverter is in the OFF state
  • No AC load connected
  • This is relevant for sizing pre-charge circuits and fusing. I’ve checked the 120V datasheet and the full product manual without success – the spec doesn’t appear to be published.

Has anyone measured this, or does Victron publish this information somewhere I may have missed?

2

The inrush current is more dependent on the source impedance of the connected supply than the device itself. As there will be quite a wide range of supply impedance, there is no single value for the inrush current that can be given.

3

In that case, can you tell us how large the capacitors are that need to be pre-charged? This will allow us to estimate inrush current based on input impedance, and total energy.

I’m trying to understand whether I need to build a pre-charged circuit.