Insulation resistance test

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    • Autor

    Hi,

    In Europe it's a standard to test insulation resistance for electrical installations with 500 V DC for live conductors. I didn't find in the manual, can Shelly devices handle that or do they need to be remove before the test?

    Welcome to the forum!

    IIRC, the insulation test will be executed between live wire and protective ground and between neutral wire and protective ground. Due to the fact, Shelly devices do not have a connector for protective ground, this test will do no harm to the Shelly.

    „Habt Geduld. Alle Dinge sind schwierig, bevor sie einfach werden!“ (aus Frankreich)

    „Nothing in life is to be feared, it is only to be understood.“ (Marie Curie, 1867-1934)

    „Comment is free, but facts are sacred“ (C.P. Scott, britischer Verleger)

    • Autor

    So I assume, if it can't handle it, it's covered under warranty?

    Usually this kind of information is mensioned in datasheet and manual, but that's not the case with Shelly for some reason.

    The reason ist that no Shelly device has a connection for protective ground. Thus, the withstand voltage cannot reach the Shelly.

    „Habt Geduld. Alle Dinge sind schwierig, bevor sie einfach werden!“ (aus Frankreich)

    „Nothing in life is to be feared, it is only to be understood.“ (Marie Curie, 1867-1934)

    „Comment is free, but facts are sacred“ (C.P. Scott, britischer Verleger)

    • Autor

    I mean that's highly theoretical. If you measure it against N, it is in earth potential as they are linked. So in practice you could break it, even if in theory you can't.

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