Fluke AC DC Differential Voltmeter 893A ? Main plug old style ?? - Page 1
Forum section: electronics / general

author: Overspeed
author_rank: Frequent Contributor
timestamp: January 23, 2025, 03:10:24 pm
content: Helloon my Differential Voltmeter 893A I have a ''old style'' main plugWhere is possible to purchase one new ? as that look oldorI convert it with a new style main AC socket as on the second picture ??RegardsOS

author: Dr. Frank
author_rank: Super Contributor
timestamp: January 23, 2025, 04:42:58 pm
content: Afaik, it's unobtainium, new.I really vote for replacement by actual plug.Frank

author: Overspeed
author_rank: Frequent Contributor
timestamp: January 23, 2025, 05:48:01 pm
content: Quote from: Dr. Frank on January 23, 2025, 04:42:58 pmHelloThanks as some old plastic go brittle not include most o the time a quite high price , I can cut a new shape in the metal enclosure and install a good Schaffner socket i there is room behind .Goal is not to make quick and dirty setup but some thing in the original spirit o the equipmentRegardsOS

author: floobydust
author_rank: Super Contributor
timestamp: January 23, 2025, 07:36:33 pm
content: Maybe consider upgrading to modern IEC 320 C6 (laptop) like Schurter6160.0001or2561or the snap-in versions.This would require less cutting. There is the C5 as well. You'd have to compare what cutout you have now.A problem with EMI filtering power entry modules is they dump all the powerline hash and RF to chassis ground. It's better to use a medical grade one, these have Y-caps after the input inductors.

author: Overspeed
author_rank: Frequent Contributor
timestamp: January 24, 2025, 09:04:59 am
content: Quote from: floobydust on January 23, 2025, 07:36:33 pm

author: factory
author_rank: Super Contributor
timestamp: January 24, 2025, 07:08:34 pm
content: The leads for the PH163 type connector are only really available as new-old-stock or used, Sphere still have one in stock under the HP tab as "HP old style power cord"https://www.sphere.bc.ca/type/hp/, they turn up on feeBay occasionally, but easier to find over in the US.There is also some 3DP thing on the web too, I don't like the connector sockets chosen for that.I'm not a fan of the IEC C5, C6 connectors either, they are often very poor quality and current rating is only 2.5A, which could be an issue for those in the US.David

author: floobydust
author_rank: Super Contributor
timestamp: January 24, 2025, 07:31:01 pm
content: You don't need an EMI filter, the 893A power transformer has (triple) extra shielding to cover that.The original mains connector (Fluke 2109-222612) is a Switchcraft AC3G.It mates with PH-163. Belden/Volex #17280 power cord but no longer available.I don't know how you can rework the rear panel cutout without a lot of vibration and metal shavings and risk trashing the instrument. A sheet metal nibbler can work really well instead.

author: Overspeed
author_rank: Frequent Contributor
timestamp: January 24, 2025, 07:44:18 pm
content: Quote from: factory on January 24, 2025, 07:08:34 pmHellothanks for the link interesting source of old HP equipmentas that now 50 years plastic I prefer to go with a safe solution and also be able to use cheap available AC leadregardsOS

author: factory
author_rank: Super Contributor
timestamp: January 24, 2025, 07:46:55 pm
content: There are plenty out there at high prices, often advertised for ancient jukeboxes & synths, this one looks so new I'm convinced they must be making them somewhere, or someone hoarded them to sell for profit.https://reverb.com/uk/item/77906412-wurlitzer-200-arp-2600-oberheim-fvc-1-4-voice-ac-power-cord-ph163Cable is labelled "Tai Wire & Cable Co." I don't recognise the logo on the NEMA plug, wonder if anyone in Japan knows the source of these new power leads? It's not Volex (aka Belden) or Alpha who made them before.P.S. they are not all 50 years old, the last Volex pdf I found was dated 2007, Alpha one is from 2005.Attached below are the various pdf datasheets I've found over the years.David

author: floobydust
author_rank: Super Contributor
timestamp: January 24, 2025, 08:03:30 pm
content: Tiantai Cable (Ningbo) Co., Ltd.

author: factory
author_rank: Super Contributor
timestamp: January 24, 2025, 08:23:46 pm
content: Thanks, someone must have got Tiantai to make a batch of custom cables then, as they haven't got it listed on their webshop, well I can't see it under the US leads.David