Shielded interface cables for devices with high PE current

[Leonelf]

Hi!
I'm currently working on adding a communications interface to a power device. The problem is, that the power device has a very high PE current, as it's an industrial device with different standards than consumer equipment. When using shielded cables (shield grounded to chassis), a share of this PE current is transmitted over the shield, making it fail conducted emissions tests on these interfaces, as they PE current originates from the input filtering of the device.
Are there certain best practices or measures that enable using shielded cables on such high-PE-current devices? Industrial Ethernet and ProfiNET etc. all use shielded cable, but they often control such high power devices; How do they do that? My fallback idea would be total isolation and a floating non-shielded cable...

[moffy]

To avoid this issue the shield should only be connected at one end and left open at the other.

[Leonelf]

I've read of this approach, but found an article multiple times, countering this:
https://www.emcstandards.co.uk/cable-shield-grounded-at-one-end-only

Has this practice been deprecated?

[moffy]

Try just a single ended ground and see what the result is, it will certainly stop the current flow while still providing electrostatic shielding, magnetic shielding/protection is best done by twisted pairs as in CAT5 cable etc.