Renewables

[JulianC]

Mine's the HD.

 

[SolarCity]

I think I'll have to install one on my own home and monitor it.

I'd love to see some more real world data to back up manufacturers' claims though. (perhaps from someone that doesn't immediately lose their chin when you ask them for it....)

 

[sedgy34]

Mine's the HD.

Do you have rcd protected circuits in the distribution board

 

[sedgy34]

I think I'll have to install one on my own home and monitor it.

I'd love to see some more real world data to back up manufacturers' claims though. (perhaps from someone that doesn't immediately lose their chin when you ask them for it....)

we didnt get as far as monitoring to prove 18% as the tripping problems occured our customers didnt want the nuissance tripping so we took them out i have a spare was going to put in my house but just havnt got round to doing it yet.

 

[Earthstore]

I can not see why you had any tripping issues, as they are fitted upstream and just drop the incoming voltage down from (in the case of the one I have fitted) from 245v to 220v.
It is running a GSHP and garage block and is working fine.
Maybe there was a fault in the house and the voltage change caused the RCD to trip?

 

[sedgy34]

I can not see why you had any tripping issues, as they are fitted upstream and just drop the incoming voltage down from (in the case of the one I have fitted) from 245v to 220v.
It is running a GSHP and garage block and is working fine.
Maybe there was a fault in the house and the voltage change caused the RCD to trip?

A FAULT!!! how could that be when the rcd didnt trip previously, the solar circuit didnt go on the rcd side either you can call marshall tuflex they may be able to shed some light on why there units are tripping rcds

 

[JulianC]

Do you have rcd protected circuits in the distribution board

Yes. Otherwise they wouldn't be able to not trip.

Can't see the Voltis being the cause of any tripping. It is installed upstream of any RCDs so I do not see how it is possible to influence their operation.

 

[Earthstore]

A FAULT!!! how could that be when the rcd didnt trip previously, the solar circuit didnt go on the rcd side either you can call marshall tuflex they may be able to shed some light on why there units are tripping rcds

Where was your PV connected? Before or after the Voltis.
I am just trying to help.

 

[sedgy34]

The Pv was connected same day as the Voltis unit was fitted then re occurance of tripping throughout different days through the following week we disconnected the Voltis unit and left the Pv in situe the tripping hasn't happened since hence the Voltis being taken out.

 

[sedgy34]

I put it down to the imbalance of voltage the rcd didn't like when it changed to its 220v cycle causing the rcd to pick it up and it's cycle changeover is 24 ms same as the tripping time on the rcd

 

[Earthstore]

Sorry, where was PV connected, before or after voltis unit, not when?

 

[sedgy34]

The Voltis is installed after the meter and before the distribution board it's got a 63a breaker on it
Connection is Feed in from meter load out to db
Pv was in a spare way in db 20a circuit

 

[Earthstore]

I think that we may have found the problem, the PV must be connected in before the Voltis unit, as your PV was on a spare way it was connected after the Voltis unit.
That would trip the RCD as the PV would be trying to export back through the transformer in the Voltis unit.
It should be Incoming meter>PV system>Voltis unit>CU.

I hope that makes sense and helps also.

 

[sedgy34]

I think that we may have found the problem, the PV must be connected in before the Voltis unit, as your PV was on a spare way it was connected after the Voltis unit.
That would trip the RCD as the PV would be trying to export back through the transformer in the Voltis unit.
It should be Incoming meter>PV system>Voltis unit>CU.

I hope that makes sense and helps also.

thanks that makes perfect sense!!!! but why would you fit a small 2way consumer unit if there are 2/3 spare ways in the DB not knowing the rcd will trip when its all installed with the voltis unit

 

[sedgy34]

JULIAN C just wondered is your voltis wired this way as above