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Is it possible to provide electrical interlock only (using IVE) without mechanical interlock?

Published date: 15 March 2021

Mechanical interlocking system must be added to electrical interlocking to protect against electrical malfunctions or incorrect manual operations. Electrical interlocking is used with a mechanical interlocking system. Morover, the relays controlling the closing order to the “N” and “R” circuit breakers must be mechanically and/or electrically interlocked to prevent them from giving simultaneous closing commands.
 

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