“The manufacturers say that they are 100% tested before they leave the factory, but it is not hugely reassuring to the installer whose insurance take on liability once they supply and install the SPD.”
“Metrel multi-function testers have for more than 10 years offered a ramp facility on the insulation test which gives the ability to test varistors and some SPDs in the field.”
“Maybe it is time that the powers that be recommend a test protocol which could be incorporated in all multi-function testers”.
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t: 01924 245000
e: Brendan.beaver@metrel.co.uk
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