Genset draws current while running ????

Question

question

bivaccamper asked Dec 28, '18

Yesterday I went to help a guy with a Victron installation:

- 3x Multiplus 48 5000 in 3-phase configuration

- 1x Color Control

- 1x Smart Solar 250 / 100

- 1x 13.8 BYD battery

- 1x 9 KVA 3-phase genset

I've set up the system (multi, mppt and color control and autostart for the genset by low SOC)

First I've found a problem that whith the genset on, the multis read voltage at the input but not charging, just inverting.

We found that rotating 1 input phase solve the problem.

The funny thing is that when the genset is charging, the color control shows it as a AC INPUT, but also as an AC LOAD.

If I stop the genset the loads disappear (also the input)

Is like the genset draws current.

Can someone explain that? It's fixable?

Thanks

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Answer 1 · 2019-01-04T09:16:13Z

Johannes Boonstra (Victron Energy Staff) answered · Jan 04, 2019 at 09:16 AM

In a Multi /Quattro the AC out is not measured but calculated using AC in and the the DC current.

So it can be due to a measure error/power factor or such that this value is incorrect, resulting in these ghost values on the CCGX display.

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