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GE Multilin 850 Leads the Way in Feeder Protection Innovation, Building a Robust Defense for Industrial Power Systems Jan 15, 2026
In today's increasingly demanding industrial and distribution networks with stringent requirements for power continuity and asset reliability, the advent of GE's new generation Multilin 850 feeder protection system marks a new height in medium-voltage feeder protection and control technology. As a core member of the Multilin 8 series platform, this device is specifically designed for primary and backup protection of underground and overhead high-voltage feeders. Its mission transcends traditional fault isolation functions, aiming to provide users with comprehensive solutions encompassing management, protection, and control. The Multilin 850 integrates high-performance protection algorithms, high-density input/output interfaces, and powerful programmable logic, enabling flexible adaptation to complex application scenarios ranging from petrochemical and oil refinery applications to distributed generation integration. Whether in radial or ring network distribution lines, it ensures optimal protection and control strategies. Its design philosophy is rooted in GE's deep heritage in power protection and incorporates state-of-the-art design practices and manufacturing standards, aiming to comprehensively improve system performance, quality, and operational lifespan, setting a new reliability benchmark for modern power infrastructure.

Ensuring Critical Operational Continuity Through Superior Quality and Innovative Design

Superior quality and reliability are the cornerstones of the Multilin 850 feeder protection system. GE ensures robust performance by investing heavily in advanced type testing facilities that simulate a full range of operating environments and adhering strictly to the highest reliability standard, IPC-A-610 Class 3. Each Multilin 850 undergoes 100% electrical stress screening before leaving the factory, and its manufacturing process takes place in a lead-free facility compliant with ISO 9001:2008 standards, guaranteeing product consistency from the outset. In terms of innovative design, the device completely eliminates electrolytic capacitors, significantly improving long-term stability and lifespan. Its unique environmental sensing module monitors environmental factors affecting product lifespan in real time, and all printed circuit boards undergo reinforced conformal coating treatment, enabling it to withstand extreme industrial environmental challenges and effectively extending the relay's service life.


The GE Multilin 850 simplifies systems and enhances network security through advanced technology integration

The Multilin 850 redefines the protective relay as an intelligent system hub, seamlessly merging sophisticated communication with deep diagnostic insight. It offers a comprehensive suite of communication interfaces—including optional point-to-point Wi-Fi—enabling engineers to perform secure, local programming and diagnostic access. This capability significantly streamlines system configuration and maintenance, reducing both setup complexity and operational downtime. Driven by an innovative Protection Integrity Engine with custom algorithms, the relay delivers advanced diagnostics to ensure unwavering protective performance. In the realm of cybersecurity, the Multilin 850 incorporates robust safeguards such as configurable password policies, RADIUS authentication, and role-based access control. These integrated features empower users to confidently comply with stringent infrastructure security standards, including NERC CIP requirements. For common configurations like main-distributor-main wiring, it provides a more economical and reliable solution, reducing hardware requirements and simplifying system integration. Its configurable logic eliminates the need for complex programming by users, reducing implementation costs and potential points of failure.


GE Multilin 850 empowers customers' full lifecycle asset management with comprehensive service support

GE's confidence in the Multilin 850 extends beyond its cutting-edge technology and manufacturing standards to an unprecedented commitment to service and support. The equipment comes with a ten-year warranty from GE, a testament to its superior quality and enduring reliability. The Multilin 850 is designed to address the unique challenges of customers' daily operations: maximizing system and process uptime through reliable automatic bus switching, high-speed fault detection to mitigate arc flash hazards, and advanced control features such as automatic reclosing. Its drawer-style plug-in design, combined with low insertion and extraction force, simplifies testing and maintenance procedures. Through detailed asset condition monitoring and preventative maintenance diagnostics, it helps users anticipate potential problems, reduce unexpected downtime, effectively extend the lifespan of critical electrical assets, and ensure the continuous, safe, and efficient supply of power—the heart of industry—ultimately creating immeasurable long-term value for customers.


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