A friend has sent me the attached request. He has some OEKO telecommunication power supplies that he has no information for. Can anyone help? Details below but brief summary is - >240VAC input >outputs of 36V @ 27A and 12V @ 250mA (total of 900W max). >manufactured by the OECO Corporation >in the form of a plug-in module with a connector on the back TIA Russell McMahon _____________________________ >From other worlds - www.easttimor.com www.sudan.com What can one man* do? Help the hungry at no cost to yourself! at http://www.thehungersite.com/ (* - or woman, child or internet enabled intelligent entity :-)) -----Original Message----- From: Ken Mardle To: Russell McMahon Date: Monday, 6 March 2000 11:13 Subject: grunty power supplies >Russell, > >I have recently acquired two switchmode power supply modules with 240VAC >input and outputs of 36V @ 27A and 12V @ 250mA (total of 900W max). > >They are manufactured by the OECO Corporation and are in the form of a >plug-in module with a connector on the back and a green LED, D-handle, and >locking/withdrawal lever on the front. Details on the nameplate are as >follows: > >AT&T part # P007-6005993 >AT&T rev D >Serial # 0667 and 1202 >Datecode 9345 and 9513 >Vendor part # 080-20612-40 >Vendor ID 95266 > >As you can see, the units probably come from an AT&T telecom system (I also >have a pair of matching regulator modules which take the 36V input and spit >out 5V @ 155A - also manufactured by OECO but similarly labelled as NCR >units). > >I am eager to fire these up but the connector pinning is not documented on >the units, and given the power levels I am reluctant to just go poking mains >voltages into them and see what happens. > >The modular connector is manufactured by AMP and comprises a stack of eight >rows of pins of varying sizes and configurations. > >The top three rows each have a single large flat pin (about 10x1.5mm) which >some brief circuit tracing suggests carry the AC input and chassis ground. >The top pin connects directly to a bridge rectifier. The 2nd pin connects >to the chassis. The 3rd pin connects to the bridge rectifier via a ceramic >fuse. > >The next four rows all can carry up to five small round pins (about 1.5mm >dia) but not all pin sites in each row are populated (numbering below is >from left to right along each row). > >The 4th row has four pins in positions 2 thru 5. The pin functions are >unknown but probably carry control/status signals relating to the >high-voltage input side. > >The 5th row is unpopulated (probably to provide isolation between the high >and low voltage sides). > >The 6th row has three pins in positions 1, 2, and 5. Pin 5 is connected to >the ground pin of an LM2940CT-12 regulator (so is probably the -ve side of >the +12V output). The functions of pins 1 and 2 are unknown. > >The 7th row has all five pins present. Pin 5 is connected to the output pin >of an LM2940CT-12 regulator (so is probably the +ve side of the +12V >output). The functions of pins 1 thru 4 are unknown. > >The 8th row has two large round pins (about 3.6mm dia). By elimination >these must be the 36V output with capacitor polarites suggesting pin 1 >is -ve and pin 2 +ve. These pins are galvanically isolated from the 12V >regulator connceted to pins in the 6th and 7th rows). > >Any suggestions how I might find relevant info on these units ? The OECO >Corporation do not seem to have a web presence themselves although they >appear to be a major supplier of power components for US-based telecom, >computer, and military organisations. AT&T also have no obvious point of >contact (and I wouldn't expect them to respond to enquiries anyway). Is >there anyone out there who has info on these units ? I can supply JPEG >images if that would help. > > >Regards, > >Ken Mardle > >Applied Digital Research Ltd. Tel : +64 9 415-2514 >P.O. Box 6480 Fax : +64 9 415-3514 >Wellesley St Mobile : +64 25 879-648 >Auckland E-mail : kenmar@adr.co.nz >NEW ZEALAND WWW : http://www.he.net/~adr/ > http://www.acqura.com > >