I spotted one of these out in the wild today. Still in service and working perfectly switching a bank of night storage heaters. Don’t see very many of them these days.
Would that be a similar thing to a Nevitron mercury arc rectifier?I got involved with one of these three phase to DC rectifiers at a hospital laundry. ( not this actual beast ) when I learnt the hazard of working with mercury.
Would that be a similar thing to a Nevitron mercury arc rectifier?
Thank you.Yes, being pedantic they are mercury vapour rectifiers as there was no arc once they had been started. The arc was created by an springy electrode that was pulled down to dip into the pool of mercury to create a spark to vapourise some of the mercury. A plasma discharge then continued to maintain the vapour.
They were used to provide the 660 volt DC traction supply for London Underground,
rather than seeing blue sparks
When my dipper dips into the pool, there's a sharp intake of breath.Very often the "dipper" would continue to dip into the pool
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