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Old 29th May 2019, 13:29
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Varley Varley is offline   SN Supporter
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Organisation: Merchant Navy
Active: 1971 - 2011
Join Date: Oct 2006
Posts: 10,092
That's one I had not thought of but I suggest that fibre would have been more suitable for that too.

Not a great believer in spikes and surges. Thyristor 'Crowbars' and varistors were standard defences. I have to say that a phase to neutral fault fried quite a lot of my kit at home on the other two phases but not the sort of kit that would have been approvable seawise. We did go for some cheapo Italian radars that could not survive the overvoltage WRT earth that a network earth subtended - varistors vapourised as arranged to clip each pole against the earth and not across the supply - provided isolating trasnformers (as we did for some domestic kit with switched mode supplies which 'put' a 'phantom' earth on the domestic supply.
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