Hammond PWDP13256 Collins 30K C-Core Plate Transformer

The PWDP13256 is the plate transformer for the Collins 30K, supplying the 4-125A RF power amplifier and the push-pull 75T modulators. It is part of the PWDAHL series of Peter W Dahl Transformers, magnetics for amateur radio products, and is intended for collectors and restorers of the Collins 30K.

The primary is 115/230 VAC, 60 Hz, single phase. The secondary is a tapped 2950-2365-0-2365-2950 VAC winding rated 750 mA CCS.

Unlike the E-I lamination units in the series, the PWDP13256 uses an A-0480 C-core and is listed as Style 10 on the transformer style sheet. The series notes that Hipersil C-core models in Styles 8, 9 and 10 need to be quoted by Hammond's office because of changing costs and minimum charges from C-core suppliers, so request a quote for this part. Approximate weight is 46 lbs, and the shipping weight is 46 lbs (20.87 kg).

The PWDP13256 is identified by UNSPSC 39121301 and its part page short description "COLLINS 30K PLATE TX.". Its 2950-2365-0-2365-2950 VAC winding is center-tapped with 2365 V and 2950 V points on each side.

The part is marked RoHS compliant and REACH compliant, with UPC 623980398150. It is a 60 Hz design; the series advises 50 Hz users to choose parts marked 50/60 Hz.