MIL-DTL-5015 Connector with 230V AV Voltage

[batteksystem]

Anyone has tried using these old military spec connector with AC voltage 230V before? I don't think they have issue with American 110V. However, I am not sure if we can use 230V on them as they are probably not designed for such voltage for their purpose.

We actually want to use them to delivery AC 230V power to a air-sealed enclosure. We planned to use the exact one at the bottom, but of course not china made. Thanks.

[rstofer]

It can handle 3000V RMS if is has an MS Service Rating of 'I' - pins spaced 5/16" apart
It can handle 500V RMS if it has an MS Service Rating of 'A' - pins spaced 1/16" apart

Page 26 here:

https://www.peigenesis.com/images/content/pei_tabs/amphenol/ait-ms-series/new-thumbs/tech-specs1.pdf

You need to find the contact arrangement where the pins have at least 1/16" spacing:

http://www.amphenol-aerospace.com/pdf/catalogs/5015_Catalog.pdf

Somewhere in that catalog there will be a way to configure the connector.  If not, give them a call.

[SeanB]

29/17 is not recommended for use above 200VDC peak, because of creepage in the connector backshell. If you can use a version with a lot fewer pins, and preferably use a separate 3 pin version in a 14 backshell, which has larger pins and bigger separation.  Yes you can have 400VDC ( or 250VAC) between pins at STP, but not over the full environmental range of the connector. In high altitude, high humidity  or high vibration you can get flashover or leakage between the pins or the shell. 

You will also want to have the plug side ( or whatever is going to be exposed to the elements) be potted, which does make the cable rather non repairable, as you will have to fill the rear with a flexible potting compound, after crimping the socket pins and mounting them, and the same for the backshell inside the enclosure.

[batteksystem]

We actually used the 20-29 17-pin version from hirose. It is a solder only version, so we solder and pot them for both plug and socket. I think as long as there is no air gap in the connector backshell (potted with epoxy), then at least theoretically it fulfill the creepage requirement?

[helius]

It is outside my direct experience, but I think epoxy potting does not qualify as flexible*. You would be looking at acrylic, silicone, or urethane resin for that.

* and also is not the best for dielectric isolation

See
https://www.lightingglobal.org/wp-content/uploads/2013/09/63_issue14_part-iii_corrosion_technote_final.pdf
https://blog.paryleneconformalcoating.com/best-conformal-coating-for-moisture-and-chemical-protection