> I have recently been given a Triad HV transformer, marked 70400 and
> 721C.
The transformer in my Henry 3KA is a Triad transformer marked 70400 FDN
7442.
Obviously this could be the same transformer as yours IF we assume the
second number is irrelevant (maybe a serial or inventory/date number), and
only the first number is important.
Peter Dahl has an "exact replacement" listing for the 70400 Triad part and
here is a cut and paste:
HENRY 3K ER PLATE
EXACT REPLACEMENT, TRIAD P/N 70400
CORE) EI-250 X 5" 29GM6XRH STYLE #) 04 E-I LAMINATED CORE
PR) 230 VAC 60 HZ HI-LO TAP
S1) 3800/2800 VAC @ 600MA CCS
DM) HT = 8.250 WT = 6.250 DT = 8.150 MD = 7.000 MW = 5.000
PRICE) $495.00 Plus S&H FOB El Paso, TX WEIGHT) 65 LBS
I personally suspect this may slightly under rate the transformer. Because
in my 3KA with this transformer the amp makes power in excess of what you
would expect for a 600ma CCS transformer.
Gary Chase
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