GE Multilin 859

The GE Multilin 859 Motor Protection System, a member of the Multilin 8 Series protective relay platform, is designed for the protection, control, and management of medium and large power rating induction motors. It has also been purpose-built as a direct replacement for GE’s existing range of Multilin motor protection relays including the 169, 269, 269Plus, and 369 devices.

Based on the same field-proven hardware and protection and control algorithms of the Multilin 8 Series, the 859 delivers advanced features including high-speed protection, customizable programmable logic, and advanced motor monitoring and diagnostics – all in a fixed mount, slim design.

With extensive communication capabilities, the GE Multilin 859 easily integrates into new or existing process control systems, enabling operationally focused motor management and control

To simplify the migration and upgrade from existing Multilin 169, 269/269Plus, and 369 protection relays, the 859 has the same cutout and depth. In the case of replacing a 369 relay, the 859 has the same terminal arrangement, eliminating the need to change field wiring. In the case of other relays, detailed one-to-one wire maps and setting file conversion tools are provided to significantly simplify the upgrade process.

Over-View Of GE Multilin 859:-

The Multilin 859 Motor Protection System is a protection device for managing, protecting, and controlling medium to large horsepower motors. With a fast protection pass, running every 1/8th of a cycle, the 859 relay provides fast current, voltage, power, and frequency protection elements; reducing stress on the motor. The Multilin 859 supports the latest standard communications protocols, including IEC 62439/PRP and IEC 61850 Ed. 2; facilitating easy integration into new and existing SCADA/DCS networks.

GE Multilin 859 Key Benefits:-

• Utilizing GE’s proven Thermal Model for reliable protection of AC induction motors
• With a depth of 3.5″, the 859 is ideal for MCCs with shallow depths or space constraints
• A detachable display can be mounted up to 15 feet away from the device, allowing for greater installation flexibility
• Large graphical color LCD display enhanced operability, with user-configurable single line diagrams for local control, system status, and metering
• Integrated condition monitoring based on Electrical Signature Analysis, delivering detailed monitoring & analytics for extended motor life
• CyberSentry™ Advanced Security includes features such as AAA, Radius, RBAC, and Syslog. helping to enable NERC® CIP compliance
• Safe and reliable motor re-start on ‘down hole’ pump applications. The unique backspin detection feature detects flow reversal on a pump motor, enabling timely and safe motor restarting
• Single setup & configuration software, reducing training & commissioning time
• Customer Support is available 24/7, available in multiple languages

The GE Multilin 859 is the only relay that offers a seamless, direct replacement for existing Multilin protection relays. Designed to fit the same mechanical cut and accept the same wiring connectors (applicable to 369 relays), the 859 provides a simplified replacement strategy – eliminating the need for drawing changes, re-wiring, and door modifications. While also significantly reducing any staff training requirements. Additional one-to-one wiring maps are available for other legacies Multilin motor protection relays, and automated setting file conversion and analysis tools ensure reduced configuration time and effort.