The Rogowski Coil

I am trying to gain a better understanding of the principles of the Rogowski coil. I understand that an AC current carrying conductor running through this coil induces a voltage in the coil proportional to the rate of change of current in the conductor which can be measured with a DVM. What I'm having a problem with is the integrator associated with its use. Is this necessary for frequencies above 60HZ or any range? Can this coil be calibrated to read say 1vac at 1amp AC 60HZ as a basis and then be used over a wider range?

Wondering

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Randy Gross
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or for some rogowski specs

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Joe
http://www.fcctests.com
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Joe

Spec8000.pdf contains a definitive explanation of the Rogowski Coil except for one ambiguous area: the flexible coil was defined as having an electrical connection at only one end, which is a bit confusing because of traditional circuit paths: "Input" and "Output". Have I misread?

Randy

Reply to
Randy Gross

Randy,

From the other website, it describes the rogowski as ...

The Rogowski coil is an electrical device for measuring alternating current (AC). It consists of a helical coil of wire with the lead from one end returning through the centre of the coil to the other end, so that both terminals are at the same end of the coil. The whole assembly is then wrapped around a straight conductor. A voltage is induced in the coil proportional to the rate of change of current in the straight conductor.

The Rogowski has an output ... which in the case of the spec8000, it's permanently attached to the integrator. The input is the electromagnetic field generated by the current down the conductor which has the rogowski wrapped around it.

Joe

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Joe

Thanks Joe,

I understand the "Rogowski Coil". I ran across its mention on a site that was using a light-gas gun in an attempt to compress hydrogen gas into hydrogen metal. The results of the test were instantaneous and I could not determine wether the attempt succeeded. The "Rogowski Coil" was used in the test circuitry.

Randy

Reply to
Randy Gross

Randy,

No problem. The applications I saw and used Rogowski's were in the VLF band and the bandwidth required was alot smaller than the application you described.

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Joe
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Joe

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