Timeline for Generator RCD trips after startup
Current License: CC BY-SA 3.0
12 events
| when toggle format | what | by | license | comment | |
|---|---|---|---|---|---|
| Jan 4, 2017 at 0:19 | comment | added | xirt | We removed the Live-Neutral at the inverter (switchable) and shut down the load a second inverter (tied to the same neutral) and it is now working correctly using the generator's live-neutral connection. | |
| Jan 4, 2017 at 0:15 | vote | accept | xirt | ||
| Nov 19, 2016 at 10:38 | comment | added | KalleMP | When the generator is running into no load there is no current. When the synchronisation has occurred and the generator picks up the load current will flow out of the live and return via the neutral AND THE GROUND which are connected at two points before and after the generators RCD. The RCD will detect less neutral current than live current and trip. | |
| Nov 19, 2016 at 10:36 | comment | added | KalleMP | There is no formal way to test for a ground reference on the neutral without introducing unwanted voltages/currents into the system. | |
| Nov 19, 2016 at 10:34 | comment | added | KalleMP | If you have a portable/pluggable generator I would float the generator output and remove the Neutral-ground link and remove the RCD (replace with overcurrent protection) and place the neutral-ground link permanently at the inverter. Having a switchable link is trouble. | |
| Nov 19, 2016 at 1:45 | comment | added | xirt | Would a programmatic solution work: Leave the internal Ground-Neutral connection (label K) closed, except when connected to the generator (and using its Ground-Neutral connection)? This way the Ground-Neutral connection is always upstream, and all the available protection devices are working. One would have to ensure that always a Ground-Neutral source is connected to the input (or the software can detect that, before opening K). | |
| Nov 19, 2016 at 1:41 | comment | added | xirt | If the inverter has synchronised and connects the load to the generator, how does this create a current? What causes the potential? | |
| Nov 17, 2016 at 22:25 | comment | added | KalleMP | A pretty nice range of inverters. Incidentally both RCDs will still function as long as you have only the one neutral to ground connection. I am amazed that there are no clearer guidelines available. | |
| Nov 17, 2016 at 22:20 | history | edited | KalleMP | CC BY-SA 3.0 |
Added information available after OP supplied device model number, minor fixes
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| Nov 16, 2016 at 14:29 | comment | added | xirt | The Inverter is a Studer XTH-6000, a fairly sophisticated inverter/charge controller. The inverter has a single input that can either be connected to a generator or the grid. When the generator is started, the display on the inverter says 'synchronising' before it transfers the load to the generator. I presume that is so that the disruption to the load is minimised during the transfer. | |
| Nov 15, 2016 at 19:42 | review | First posts | |||
| Nov 15, 2016 at 19:52 | |||||
| Nov 15, 2016 at 19:39 | history | answered | KalleMP | CC BY-SA 3.0 |