Tube-insulated shell-core current transformer

Details Tube-insulated shell-core current transformer Tube-insulated shell-core current transformer

1975-10-06

1977-11-29

Kozma, Thomas J.

Electricity: power supply or regulation systems

Remote sensing

336 83, 336178, 336182, 336212, H01F 4006

Patent

active

040607593

ABSTRACT:
A shell-core current transformer comprising a tubular main insulator, a measuring core arranged at least substantially coaxially with the main insulator and comprising a primary winding and a secondary winding, and a protecting core, likewise arranged at least substantially coaxially with the main insulator and comprising a primary winding and a secondary winding. The measuring core and the protecting core have a common primary winding, arranged outside the main insulator, and a common outer core part functioning as magnetic return circuit. The inner part of the measuring core, with the exception of the inner yoke portions, and the secondary winding of the measuring core are within the main insulator placed inside the inner part of the protecting core and inside the secondary winding of the protecting core, and the measuring core and the protecting core have common inner yoke portions.

REFERENCES:
patent: 3792396 (1974-02-01), Panu

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