Rewiring to use the inverter

[Googlebot]

All that work and you didn't bother to fit one of these.
First thing I fitted to my van .

AVS30 - Max 30amps Voltage Protection - Sollatek

AVS30 - Complete power protection device combining over voltage, under voltage, powerback surges/spikes protection.

www.sollatek.com

Multiflex

I thought that

Not more toys!

It‘s only a 3500kg chassis.

 

[sallylillian]

Multiflex

I thought that

The Victron Multi provides under and over voltage protection set through the VE config?

 

[Googlebot]

The Victron Multi provides under and over voltage protection set through the VE config?

Nnnnnooooooooooooo.

 

[Raul]

The Victron Multi provides under and over voltage protection set through the VE config?

Sort of, it can be set to accept certain parameters. If grid is not within setting values, then it will disconnect from grid. Initially it will not synchronise to grid if out of parameters, also, it will not protect you from a surge, it does not have the hardware to react that quick. Even power assist takes a blip before kicks in.

 

[sallylillian]

Sort of, it can be set to accept certain parameters. If grid is not within setting values, then it will disconnect from grid. Initially it will not synchronise to grid if out of parameters, also, it will not protect you from a surge, it does not have the hardware to react that quick. Even power assist takes a blip before kicks in.

Thanks, that's why I put a question mark. From memory I have it set at 185v & 250v to cut out and it protected us on Mikies excuse for electrics. But I will consider further.

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[Googlebot]

Victron inverter has been replaced.

Changed the neutral over inside which was really easy and installed it. Have a latching RCD plug connected and all is well.

Socket tester is showing an earth now where it wasn’t before.

One thing I did do was swap the relay over so that the NC contacts are on hook up. My rationale is that the inverter is used in short blasts so better suited to the other side of the relay.

There was a slight hum from it when hookup was plugged in, I don’t tend to have the inverter on overnight so problem solved.

Eco mode however is a no go. That relay clunks like a heavy duty mains switch when it blips on and off! Not a problem as it’s either off or on but worth thinking about if you do use it in eco mode.

 

[Raul]

Is the inverter totally isolated when ehu is live?

 

[Googlebot]

Is the inverter totally isolated when ehu is live?

The changeover relay has an adequate contact gap and theoretically if I energise the inverter the contacts shift over so it shouldn’t be possible to have both connected at once.

Obviously if this is wrong I can change it back?

 

[Raul]

The inverter should not hum at all when on ehu if is isolated or turned off. Maybe there is a leakage from mains ehu, then a hum is out of phase or reverse current into inverter transformer. Inverter has its own frequency, and ehu it’s own. This two should never meet on your inverter model, as it has no ability to synchronise. Also no reverse current allowed as it’s not a bi modal like inverter chargers.

 

[Googlebot]

The inverter should not hum at all when on ehu if is isolated or turned off. Maybe there is a leakage from mains ehu, then a hum is out of phase or reverse current into inverter transformer. Inverter has its own frequency, and ehu it’s own. This two should never meet on your inverter model, as it has no ability to synchronise. Also no reverse current allowed as it’s not a bi modal like inverter chargers.

Ah, sorry, I meant the relay hums. The inverter is silent.

There is no way they can meet as they are on opposite contacts on the relay.

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[eddie]

Swap it back it won’t hum

 

[Googlebot]

Swap it back it won’t hum

I might have confused things here.

There was a very slight hum from the relay when on the hook up and I used the switched side.

I have changed the hookup to the NC side and it switches when I turn on the inverter instead. The hum is exactly the same on mains or inverter, it’s just that the inverter should be on less than the mains so using the NC side for the mains made more sense.

 

[roger d]

If you already have the inverter (without prioriity switch), then you ccan buy just a priority switch.

Alternatively, you can just plug the EHU into the inverter if you only need it occaisionally.

Hi renorgy have a built-in change over.