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RET620 ANSI Transformer Protection and Control Product Guide

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This document is a product guide for the RET620 ANSI, a dedicated transformer protection and control IED from ABB's Relion 620 series. It details the device's features for protecting, controlling, measuring, and supervising two- or three-winding power transformers and generator-transformer blocks, including differential protection, arc flash detection, and IEC 61850 communication.

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