Testing a newly installed Crabtree RCD today, and it passed all tests except the 5x at 0 Deg (12ms at 180DEG).
It did trip at 0 Deg, but not within 40ms. (it is performing supplementary protection so test is required)
Apart from a duff RCD, am I missing anything obvious that could also cause this?
Is it rare to find a defective RCD or are they more common that I realise?
Gavin
It did trip at 0 Deg, but not within 40ms. (it is performing supplementary protection so test is required)
Apart from a duff RCD, am I missing anything obvious that could also cause this?
Is it rare to find a defective RCD or are they more common that I realise?
Gavin