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Multilin 850

Multilin 850
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Feeder and Bay Controller Solutions for Industrial and Utility Applications The Multilin™ 850 relay is a member of the Multilin 8 Series protective relay platform and has been designed for the management, protection and control of feeder applications. The Multilin 850 is used to provide primary (main) or backup protection for underground and overhead single or dual feeders for utility and industrial power networks. With 11 Switchgear control elements, fully configurable Single Line Diagram on a large color graphical display, 36 alarm integrated annunciator panel and 20 push buttons makes the 850 the ideal choice for bay control and protection as a “One Box Solution”. Designed with advanced communications options and detailed asset monitoring capabilities, the Multilin 850 provides advanced functionality, including high-performance protection, extensive programmable logic and flexible configuration capabilities. With support for industry leading communications protocols and technologies, the 850 provides easy integration into new or existing SCADA or DCS for enhanced situational awareness. Key Benefits • One Box Solution with advanced logic and configuration flexibility, providing primary or backup protection for up to 2 feeders or feeders with 2 sets of voltage inputs • User configurable Single Line Diagram on color display for local control, system status, and metering Innovative Technology & Design • Advanced feeder One Box Solution for protection, control monitoring and diagnostics of single/dual feeder applications • Patented environmental monitoring and diagnostics • Advanced, flexible and embedded communications: IEC® 61850 Ed2, IEC 62439/PRP, Modbus® RTU & TCP/IP, DNP3.0, IEC 60870-5-104, IEC 60870-5-103 • Single setup and configuration software across the 8 Series platform • Field swappable power supply • Enhanced relay draw-out construction • Elimination of electrolytic capacitors • Integrated arc flash detection using light sensors supervised by overcurrent to reduce incident energy and equipment damage Exceptional Quality & Reliability • Advanced cyber security features including AAA, Radius, RBAC, and Syslog enabling NERC® CIP requirements • IPC A-610-E Class 3 manufacturing standards • Draw-out design simplifies testing, commissioning and maintenance, increasing process uptime • Highest reliability standards for electronics testing • Advanced breaker diagnostics with comprehensive fault and disturbance recording • Patented environmental monitoring, providing visibility to changes in environmental conditions that can affect relay life • 100% Environmental Stress Screening and full functional testing • Rated for IP54 (front) applications • Single/dual feeder applications for utility, oil & gas, mining & metals, process industry, commercial, and waste water segments • Harsh Environment Coating • Fast protection pass enabling load shedding schemes • Bay controller for wide range of switchgear applications Uncompromising Service & Support • High speed fault detection for arc flash mitigation • Covered under GE’s 10 year warranty plan • Reliable automatic bus transfer & autoreclose schemes

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850 Feeder Protection System Distribution Feeder The Multilin 850 is an advanced feeder protection device designed for high performance, protection, control and monitoring of incoming and outgoing feeders. With support for up to 8 CT inputs & 2 sets of 4 traditional VT inputs, the 850 can be used for 2 feeders or feeders with 2 sets of voltage inputs, simplifying system architectures and operational costs. With up to 57 digital inputs and 22 digital outputs in a compact box, the 850 provides a versatile and cost effective control, protection, measurement & monitoring solution. Flexelements...

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850 Feeder Protection System Protection & Control As part of the 8 Series family, the Multilin 850 provides superior protection and control. The 850 offers comprehensive protection and control solutions for incoming, outgoing bus-tie/bus-coupler feeders. It contains a full range of selectively enabled, self-contained protection and control elements. In medium voltage (MV) networks, the compensating reactor is used to compensate the capacitive fault current ideally to zero at the fault point. However, detection of low earth-fault current in such networks is challenging when using the...

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Voltage Disturbance Cyber Security The Voltage disturbance function of Voltage Swell and Voltage Sag, as described in IEEE 1159-2009. When the voltage on any phase drops below this level a voltage sag condition occurs. Voltage sags are usually associated with system faults but can also be caused by switching heavy loads or starting large motors. Short duration voltage sag may cause process disruptions. Voltage swells are usually associated with system fault conditions, but they are much less common than voltage sags. An SLG fault on the system can cause a swell to occur, resulting in a...

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Multilin 850
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