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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

    seko:

    Does anyone know if the ramp test is even "required" for European/Danish standards?




    Hi Seko, if it's any help it's not a BS7671 certification requirement. From what I can gather the ramp test is most often used to identify a device that has become over sensitive in an existing installation rather than the commisioning of a new device.

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  • Former Community Member
    0 Former Community Member

    seko:

    Does anyone know if the ramp test is even "required" for European/Danish standards?




    Hi Seko, if it's any help it's not a BS7671 certification requirement. From what I can gather the ramp test is most often used to identify a device that has become over sensitive in an existing installation rather than the commisioning of a new device.

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