GE Multilin 859 | Comprehensive and Compact Motor Protection
The 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 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
With extensive communication capabilities the 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
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
- Detachable display can be mounted up to 15 feet away from the device, allowing for greaterinstallation flexibility
- Large graphical color LCD display for enhanced operability, with user-configurable single linediagrams for local control, system status and metering
- Integrated condition monitoring based on Electrical Signature Analysis to deliver detailed motorhealth monitoring and Predictive analytics to increase motor life
- CyberSentry™ Advanced Security including 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. Unique back spin detectionfeature detects flow reversal on a pump motor, enabling timely and safe motor restarting
- Single setup & configuration software, reducing training & commissioning time
- Customer Support available 24/7, available in multiple languages
Applications
- Suitable for Medium to Large HP Induction Motors (typically; 500kW-1MW, 650-1300 HP) foundin oil & gas, mining & metals, cement, and wastewater applications
- Medium to large two-speed, VFD-driven and cyclic loading motors
- For high inertia loads and reduced-voltage starting motors
- Retrofit solution as a direct replacement (same mechanical form factor) for Multilin 169, 269,269Plus and 369 series relays