Re: [PSES] Multiple electrical power sources

Hello Steve, Following up on Kevin’s message about IEC 62368-1, there are some requirements in Annex L (Disconnect Devices) L.8 Multiple power sources Where a unit receives power from more than one source (for example, different voltages/frequencies or as redundant power), there shall

Re: [PSES] How to Measure Surface Conductivity?

Try a conductive elastomer on the DMM probes. Intent is to not scratch the surface. However from your description, new coating appears functionally equivalent especially if bonding mechanisms use any type of sharp edge (BeCu gasket, screw, etc)Sent from my mobilePlease excuse brevity & grammar On

[PSES] How to Measure Surface Conductivity?

I have been given two samples of metal plates; one plated in our current material and the other with a new plating material we want to switch to in production. I have been tasked to compare the electrical surface conductivity. What is the best way to do this? How is this done in the industry?

Re: [PSES] How to Measure Surface Conductivity?

I would measure ohms per square using a milliohm meter. Also, another critical parameter is how hard the coating is. If the new coating is much harder than the original, it will likely make for poorer conductivity at any seams, resulting in lower shielding effectiveness even if the material

[PSES] Fw: Re: [PSES] How to Measure Surface Conductivity?

Conductive epoxy bonding the probe to the surface?Calibrate with a current shunt. "Colorado" Brian 720-450-4933 -- Forwarded Message -- From: Marko Radojicic <052300254e41-dmarc-requ...@listserv.ieee.org> To: EMC-PSTC@LISTSERV.IEEE.ORG Subject: Re: [PSES] How to Measure