Circuit breaker trip after grid failure

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khaem asked Dec 10, '21

Circuit breaker trip after grid failure

Hello,

In this case, the installation works correctly with :

- Victron MPPT Solar Charger

- Fronius PV Inverter on AC Output

- Quattro with its CCGX (ESS Mode)

- Pylontech Battery

I have observed that when grid failed, Quatro began inverting.

BUT in the same time some house circuit breaker (with differential) tripped (2 on a total of 5 main circuit breaker of 30mA).

I don't know why ? i didn't find wrong connection ...

When i turn them on again every things go well.

When grid reconnect, nothing bad happened.

So, i don't understand why beginning inverting trip the breaker ? ? ?

a relation witch ground relay ?

Thanks for your help.

Best regards,

Emmanuel

ESS Grounding

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Modifications Space

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Answer 1 · 2022-01-05T19:24:26Z

Alexandra answered · Jan 05, 2022 at 07:24 PM

@khaem

In the manual in the appendix you will see the diagram. When grid disconnects theinternal ground relay should engage. If it does not then the option has been unchecked in the settings on the quattro. The internal ground relay needs to be enabled for RCDs to work.

3952-screenshot-2019-06-25-18-27-54-1.png (349.3 KiB)

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