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GE
Grid Solutions
3 SERIES RETROFIT – INSTRUCTION MANUAL
3 Series Retrofit
Chapter 1: Overview
Overview
1.1
Introduction
As the Multilin MII Family, Multilin 239, and Multilin 735/737 digital relays age, the Multilin
3 Series (SR3) family of protection relays provide updated functional and economical
protection solutions for feeders, motors and transformers. The 3 Series family, including
the 350, 345, and 339, provide extensive diagnostic information allowing users to
troubleshoot and minimize downtime. 3 Series relays streamline work flow processes and
simplify engineering tasks such as configuration, wiring, testing, commissioning, and
maintenance.
TM
The Multilin
3 Series Retrofit Instruction Manual offers a solution to upgrade previously
installed Multilin relays, providing detailed order code equivalencies, mechanical details,
and wiring diagrams. For common MII Family Digital relays a software conversion tool
provides conversion of existing settings files and Modbus Maps. This manual also provides
retrofit suggestions for Multilin M Family, MLJ, and TOV relays in less detail.
1
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