Inductor devices – With electric and/or magnetic shielding means
Patent
1994-08-08
1996-12-24
Thomas, Laura
Inductor devices
With electric and/or magnetic shielding means
336192, 336223, 336195, H01F 2728
Patent
active
055876951
ABSTRACT:
The present invention relates to a measuring transformer which contains a primary conductor which carries current to be measured, and a secondary coil which is magnetically coupled thereto. The primary conductor is shaped helically and forms a body, like a helical spring, which surrounds the secondary coil with at least one turn. The primary conductor is preferably formed by a tube having a spiral groove which passes through its wall. The primary conductor has inherent stability which is very high such that no special holding means are required for the secondary coil. The secondary coil is extremely easy to install in the primary conductor and there are no problems with installation tolerances and the like.
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Thomas Laura
Zellweger Luwa AG
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