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Westinghouse MPR Motor Protection Relay Manual

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This document provides detailed technical information on the Westinghouse MPR microprocessor-based programmable relay, which offers comprehensive protection for 3-phase AC induction motors. It covers the relay's construction, internal modules (Power Supply/Input-Output, Microprocessor, RTD, Differential/Restart), theory of operation, and setup instructions for protective functions including overload, locked rotor, and ground fault detection.

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