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SPAJ 115 C Restricted Earth-Fault and Residual Earth-Fault Relay Manual

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This document is a user manual and technical description for the ABB SPAJ 115 C combined restricted earth-fault and residual earth-fault relay, part of the SPACOM product family. It details the relay's application for protecting power generators, motors, and transformers, including its principle of operation, configuration, technical data, and secondary injection testing procedures.

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