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.
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 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 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 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 available 24/7, available in multiple languages
High-Inertia Load Applications
VFD-Driven Motor Applications
Cyclic Load Motor Applications
Multilin 859 motor protection relay functional block diagram