Transformer Protection

Multilin 845

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The Multilin™ 845 Transformer Protection System is a member of the Multilin 8 Series protective relay platform and has been designed for the protection, control and management of 2- and 3-winding power and distribution transformers in both utility and industrial applications.

The Multilin 845 provides advanced functionality for a wide range of transformer applications delivering high-speed protection, customizable programmable logic, advanced transformer monitoring and diagnostics, and support for the latest communications protocols for easy integration into new or existing power systems.

The Multilin 845 delivers comprehensive transformer health monitoring, diagnostics, and reporting with integrated connectivity to composite and multiple gas transformer DGA solutions such as, GE’s Kelman Transformer Monitoring devices, delivering actionable analytics for asset optimization and transformer life extension.

Key Benefits
  • Comprehensive transformer protection including fast operating differential protection, unique CT saturation and directional detection

  • Advanced transformer monitoring, diagnostics and disturbance recording extending asset life

  • Integrated protection & DGA for continuous transformer monitoring

  • Integrated arc flash detection using light sensors to reduce incident energy and equipment damage

  • High-end cyber security tools such as AAA, Radius, RBAC, and Syslog enabling NERC CIP requirements

  • Draw-out design simplifies testing, commissioning and maintenance

  • Optional Wi-Fi minimizes system configuration and facilitates safe relay programming and diagnostic retrieval

  • Monitored environmental conditions helps reduce system downtime

  • High flexibility for customized protection and control logic

What's New

Full Color Graphical HMI Front Display

A large, full color Graphic Control Panel (GCP) ensures clear representation of critical status and measurements. The 8 Series offers two options for front panels:

  • 10 Programmable Push buttons with 12 programmable LEDs
  • 3 Programmable Push buttons and 12 programmable LEDs

Switchgear Control and Configurable SLD

The Multilin 8 Series provides a configurable dynamic SLD up to six (6) pages for comprehensive switchgear control of up to 3 breakers and 9 disconnect switches; including interlocks. Up to 15 digital and metering status elements can be configured per SLD page.

Platform Overview

The Multilin 8 Series platform delivers the highest level of quality, reliability and performance with…

Innovative Technology & Design

  • Patented environmental monitoring and diagnostics helps visibility on change in environmental parameters
  • Advanced, flexible and embedded communications: IEC® 61850 Ed2, IEC 62439/PRP, Modbus® RTU & TCP/IP, DNP3.0, IEC 60870-5-104, IEC 60870-5-103
  • Single setup and configuration across the platform
  • Field swappable power supply
  • Draw-out design simplifies testing, commissioning and maintenance, thereby increasing process uptime
  • Optional Wi-Fi connectivity minimizes system configuration and provides safe relay programming and diagnostic retrieval
  • Elimination of electrolytic capacitors

Exceptional Quality & Reliability

  • IPC A-610-E Class 3 Manufacturing standards – highest industry standards for electronic manufacturing
  • Highest reliability standards for electronics testing
  • Environmental Stress Screening and full functional testing
  • Rated for IP54 applications
  • Standard Harsh Conformal Coating

Uncompromising Service & Support

  • Covered under GE’s 10 year warranty plan
  • Fully designed, tested and assembled at GE facilities