405A662601 Power supply for WDPF Q Crates

[gmheath]

I have recently been asked to modufy WDPF system Currently it utilizes 110 to 240 transformers to power the 13Volt DC Q crate power suppies. Due to lack of space we need to remove these is it possible to change the required input power of the 405A662601 units from 240 to 120Volts?

 

[ScottyUK]

Your part number is incorrect: the last 6 is actually a letter G which denotes the 'Group' of the part.

405A662G01, 13 VDC I/O Power Supply - 115V
405A662G02, 13 VDC I/O Power Supply - 230V

List price on these is about US$4300. Ouch. There are plenty of modern commercial power supplies which equal or surpass the performance of these big old switchers.

I did something similar a year or two ago when we replaced the 110V/24V and 110V/13V DC-DC converters with AC-DC supplies after major changes on our Westinghouse WDPF-DEH systems. The replacements I used were from Astec, specifically the MP1-3L-3L-30 which is 12V 1000W nominal. The 12V models have enough adjustment to deliver the 13V output you need. Physically they are fairly compatible with the original mounting rails other than a couple of fixing screw locations on the case.

http://www.astec.com/products/datasheets/mp/MP Series.pdf

Curiously enough Astec is now an Emerson company.



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