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Type-A RCD failing 180 degree ramp test

Former Community Member
Former Community Member
Hi


We are testing a type-A RCD (see image: "ABB") with a METREL MI 3152 (see image: "MI 3152 test").

As the image shows, the ramp test (I delta) is failing to trip the RCD for the negative half wave.


Have oneone seen this before?


Br Sebastian
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  • Former Community Member
    0 Former Community Member
    Yes, all loads are disconnected by turning off Q1/Q2 (see attached image: "Schematics.PNG")


    The RCD tester is also show in this image together with the "F3" RCD

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  • Former Community Member
    0 Former Community Member
    Yes, all loads are disconnected by turning off Q1/Q2 (see attached image: "Schematics.PNG")


    The RCD tester is also show in this image together with the "F3" RCD

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