GE Multilin 859 Comprehensive and Compact Motor Protection

MULTILIN 859 Comprehensive, Compact Motor Protection & Management for Medium

and Large Motors

The Multilin 859 relay is a member of the Multilin 8 Series protective relay platform,

designed for the protection, control and management of medium and large power rating

induction motors. It has been designed for space constrained applications, where

a shallow depth is required, or as a direct replacement for existing Multilin 169. 269.

269Plus and 369 motor protection relays.

Utilizing 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.

Key Benefits

• Utilizing GE Vernova’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 for enhanced operability, with user-configurable

single line diagrams for local control, system status and metering

• Integrated condition monitoring based on Electrical Signature Analysis to deliver

detailed motor health 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

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

Applications

• Suitable for Medium to Large HP Induction Motors (typically; 500kW-1MW,

650-1300 HP) found in 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

Retrofit Solutions

The Multilin 859 has been designed as a direct replacement and upgrade, matching the

height, width depth, to older Multilin 169. 269. 269Plus and 369 protection and control

devices.

The 859 fits the same mechanical cutout and uses the same terminal blocks as existing

369 relays, eliminating the need to rewire the device. For other relays, one-to-one wire

maps are provided to reduce installation and commission times.

The 859 eliminates the need to modify existing cut-outs or wiring, and does not require

re-engineering or drawing changes. The unified 8 Series setup and configuration tool

further simplifies the upgrade process with automated setting file conversion, minimizing

system downtime and commissioning time.

New Build Installations

The 859 is equally as powerful in new installations as it is for retrofits. The shallow depth

behind the panel facilitates ease of mounting, plus the graphical HMI, control and

annunciation capabilities serve to reduce the need for peripheral equipment mounted in

the panel.

The protection and control features carry the strong Multilin design heritage, reducing training

requirements for personnel.

Advanced Motor Monitoring & Diagnostics

Integrated, cost effective monitoring and diagnostic features that leverage existing relay data

without the need for additional devices or sensors to detect electrical, thermal or mechanical

abnormalities before they become critical motor failures.