Core balance transformers

The installation of protection or signalling resources such as earth leakage protection relays involves the use of core balance transformers. These enclose active conductors, providing the differential summation of vector currents and revealing leakage current. The core balance transformers (toroids) proposed by SOCOMEC meet requirements in terms of measurement sensitivity and are suitable for differential relays RESYS M20/M40/P40 and DIRIS A80. Closed (series ?IC, WR and TFR) or split core (series WS) types, suit all wiring configurations.

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