850 FEEDER PROTECTION SYSTEM – INSTRUCTION MANUAL 1–1
850 Feeder Protection System
Chapter 1: Introduction
GE
Grid Solutions
Introduction
The Multilin™ 850 relay is a member of the Multilin 8 Series protective relay platform
designed for the management, protection and control of feeder applications. The Multilin
850-D variant is used to provide primary (main) or backup protection for underground and
overhead feeders for utility and industrial power networks.
The 850-D variant, with support for up to eight CT inputs and two sets of four traditional VT
inputs, provides effective protection, control and monitoring of two distribution feeders.
This feature also offer redundancy with the same number of devices.
The 850-P variant, with support for up to twelve CT inputs and six Low voltage Analog(LEA)
(or four traditional VT inputs) provides multi-feeder protection, control and monitoring
support for three-way or four-way Pad mount switchgear or RMUs, using single box.
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