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Type-A RCD failing 180 degree ramp test

Former Community Member over 5 years ago

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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0 Former Community Member over 5 years ago

sparkiemike:

Sparkingchip:

Is it actually doing a ramp test?

Don't think so, I think is the RCD tripping time because in the image the results on the instrument are in milliseconds

It is failing the test that is shown as ">1500 mA" on the display. This is a "trip-out current test" (see: Metrel 3152 manual, page 108) The "trip-out test" is described as: "The instrument increases the test current in small steps through appropriate range as follows" see page: 107.

The test stops at 1500 mA, and the test fails
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0 Former Community Member over 5 years ago

sparkiemike:

Sparkingchip:

Is it actually doing a ramp test?

Don't think so, I think is the RCD tripping time because in the image the results on the instrument are in milliseconds

It is failing the test that is shown as ">1500 mA" on the display. This is a "trip-out current test" (see: Metrel 3152 manual, page 108) The "trip-out test" is described as: "The instrument increases the test current in small steps through appropriate range as follows" see page: 107.

The test stops at 1500 mA, and the test fails
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Type-A RCD failing 180 degree ramp test

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