Navitron Renewable Energy and Sustainability Forum

Energy/Electricity Storage and Use/Grid Connection => Off-Grid, Batteries & Inverters => Topic started by: Scruff on April 16, 2017, 04:32:51 PM



Title: Inverter Combi Isolation
Post by: Scruff on April 16, 2017, 04:32:51 PM
Heyas,

I'm in the process of designing an E-disconnect system for my power plant.
Does anyone know...do I have to isolate the mains input as well as the ELV input of an inverter combi or can I just isolate the 48VDC feeders?

How do combis behave with mains present at the mains input and no battery connected?


Title: Re: Inverter Combi Isolation
Post by: rogeriko on April 16, 2017, 05:01:27 PM
All the instructions I have ever read for different models say connect battery first then mains.


Title: Re: Inverter Combi Isolation
Post by: Scruff on April 16, 2017, 05:05:17 PM
Yurp.
Any idea why?

You can run many a battery charger or transfer relay without batteries.
Most of them also have LVD but I suspect that's load disconnect not control.

What happens if your main battery fuse pops?