How can measuring current transformers work when the concerned cables are shielded?

And the shields tied to ground. I assume the magnetic field from the cables cannot escape an earthed shield?How can measuring current transformers work when the concerned cables are shielded?The shielding reduces the electrical noise generated by the cable. If the cable wasn't shielded, there would be a large 60 Hz signal generated by a cable carrying that much current. However, the shielding doesn't do anything to stop the magnetic fields; they strictly work on the electrical part. So measuring shielded cables works exactly the same way as measuring unshielded ones.How can measuring current transformers work when the concerned cables are shielded?Yopu can measure them at the hookup point or measure them in a series circuit.The wires should be exposed at the point of contact.

tess gerritsen

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