FIELD: electrical engineering.
SUBSTANCE: proposed current transformer designed for installation in oil-switch has at least one toroidal core attached to oil switch case. Dry-type toroidal-core transformer is disposed outside on high-voltage bushing of switch and attached to base of the latter.
EFFECT: facilitated maintenance, enhanced accuracy class affording reliable information about commercial-frequency alternating-current installations.
1 cl, 4 dwg
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