Collins 820E-1/F-1 Screen Transformer

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Dale H. Cook
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Collins 820E-1/F-1 Screen Transformer

Post by Dale H. Cook » Mon Sep 23, 2019 1:05 pm

I have a client with a Collins 820E-1 with an open winding in the screen transformer modulator secondary. Would any of you have a scrapped-out 820E-1/F-1 screen transformer whose windings all ohm out with continuity? Collins used the same transformer in the 820E-1 (5 kW) and 820F-1 (10 kW).

Failing that can you suggest any good rewinders? It has a 240v Y primary and two 875v Y secondaries so it is not a simple rewind job.
Dale H. Cook, Contract Engineer, Roanoke/Lynchburg, VA
http://plymouthcolony.net/starcityeng/index.html

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