Hammond PWDP13084 4000/3000 VAC Plate Transformer for Henry 3K-A

The PWDP13084 is a Peter W. Dahl Hipersil plate replacement transformer for the Henry 3K-A amplifier. The part page tagline reads "COLLINS 3K- A PLATE TRANS", while the ordering table and drawing identify it as the Henry 3K-A plate transformer (drawing titled HENRY 3K/3K-A).

The secondary is rated 4000/3000 VAC @ 600MA CCS, and the primary is 230 VAC 60 Hz with a HI-LO tap. The drawing schematic shows primary terminals HI (1), LO (2) and (0) and secondary terminals (3) and (4), with primary-side terminals 0, 1, 2 and secondary-side terminals 3, 4 on the unit.

It is wound on an A-0518 C-core in Style 9, weighs approximately 38 lbs, and the drawing shows a 0.312 x 0.500 mounting slot, a date-code label and a Made in Canada marking. Some Hipersil C-core models in Styles 8, 9 and 10 need a quote from the manufacturer's office.

The part is listed as RoHS compliant and REACH compliant, with UNSPSC 39121301 and UPC 623980186191. Shipping weight is 38 lbs (17.24 kg).

The PWDP13084 is listed in the PWDAHL Series of transformers and chokes taken directly from the Peter W. Dahl files, a range described as magnetics for amateur radio products. These transformers are usually built to order one at a time, and because many of the designs are decades old it is always best to confirm availability by phone or e-mail before planning a repair around it. Units that have already been built are shown with Hammond part numbers, as this one is, and stock units can usually be shipped the next business day.