WEBVTT

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Electricians like to test the relay by pressing!

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Avoid ! It is dangerous: slow closing, risk of cct and fire!

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Builders added a window!

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We remove it because we are off and want to test the contacts

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On the left the tester is connected to the NO: open since the coil is not powered

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Right it sounds because I am on the NF normally closed / NC closed

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Mounting triangle for example the following is very important

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I have to perform it slowly, hence my manual use

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The NF / NC has just opened, the continuity tester on the right no longer sounds

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There is thus between the opening of the NF / NC and the closing of the NO as here a dead time

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And it is only at the end that the NO closes and makes sound to the left

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And it is only at the end that the NO closes and makes sound to the left

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On the other hand, we see how dangerous it is to press the hand: we are too slow!