Zs and R1+R2 testing Multiplus 2 ESS

Q&A and troubleshooting
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1

I need to check the Ze with the ESS I have. It is a typical ESS with Multiplus 2 10kVA on the incomer, supplied by batteries.

Does anyone have the correct testing proceedure for Ze and R1+R2. I think that the best way to do it will be to fully isolate the Multiplus 2 from circuit and test as normal without Multiplus 2 in circuit. The reason is that even with low ohm testing can cause problems with the ground relay.

For testing the fault current this can be done with the Multiplus 2 isolated from the incomer, expecting a slightly higher resistance and lower fault current than the PME grid, due to smaller transformer size.

Are there any critical don’t does, that will damage the invertor?

Thanks

2

After much searching I have found an EICR testing document (may save others time in future).

Anyone with other knowledge or experience, I would greatly appreciate any info you can share.

victron_multiplus_ii_10kva_eicr_testing_guide.pdf (5.2 KB)

3

Are you able to share the source of your test guide?

4

Energiean.co.uk

Like everything I will be thoroughly checking through the procedure until I am happy, before using it.