State-of-the-Art Protection & Control Platforms
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MID Digital Distribution System Family
The DDS family of devices provide economical protection, control, metering and monitoring functionality to electrical utilities and industrial customers.
The DDS family substitute with one box a complete set of discrete devices such as electromechanical relays, meters, annunciator panels, pushbuttons, transducer, auxiliary relays, and mimic drawings.
MID Digital Distribution System Family
The DDS family of devices provide economical protection, control, metering and monitoring functionality to electrical utilities and industrial customers.
The DDS family substitute with one box a complete set of discrete devices such as electromechanical relays, meters, annunciator panels, pushbuttons, transducer, auxiliary relays, and mimic drawings.
Recommended Products & services
Multilin 3 Series
The 3 Series family of protection relays are functional and economical protection...
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Multilin 8 Series
The Multilin⢠8 Series platform of advanced protection and control relays delivers high...
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Multilin UR Family
The Universal Relay family of protection and control products are built on a common...
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Multilin 3 Series
Intuitive industrial and utility protective relays for feeders, motors and transformers
The 3 Series family of protection relays are functional and economical protection solutions for feeders, motors and transformers. By providing protection, control, monitoring and metering, and both local and remote user interfaces in one assembly, the 3 Series family effectively eliminates the need for expensive discrete components. The 3 Series family provide extensive diagnostic information allowing users to troubleshoot and minimize downtime.
Multilin 3 Series
Intuitive industrial and utility protective relays for feeders, motors and transformers
The 3 Series family of protection relays are functional and economical protection solutions for feeders, motors and transformers. By providing protection, control, monitoring and metering, and both local and remote user interfaces in one assembly, the 3 Series family effectively eliminates the need for expensive discrete components. The 3 Series family provide extensive diagnostic information allowing users to troubleshoot and minimize downtime.
Key Features
- Event Recorder: 256 events with 1ms time stamping
- Oscillography with 32 samples per cycle and digital states
- IRIG-B clock synchronization
- Motor health diagnostics
- Security audit trail
Monitoring & Metering
Preventative Maintenance:
The 3 Series allows users to track relay exposure to extreme environmental conditions by monitoring and alarming at high temperatures. This data allows user to proactively schedule regular maintenance work and upgrade activities.
Failure Alarm
The 3 Series detects and alarms on communication port and IRIG-B failures. The 3 Series also enables users to analyze system performance via diagnostics information such as event records, oscillography, etc.
Statistical Data
The 3 Series records statistical data in order to assist in diagnosing common motor faults, as well as assisting in planning preventative maintenance.
Advanced Device Health Diagnostics
The 3 Series performs comprehensive device health diagnostic tests during startup and continuously at runtime to test its own major functions and critical hardware. These diagnostic tests monitor for conditions that could impact and present device status.
Key Features
- 4 X20 character LCD display
- Control panel with up to 12 LED indicator
- Front USB and rear serial, Ethernet and Fiber ports
- Multiple protocols - IEC 61850, ModBus™ RTU, ModBus™ TCP/IP, DNP 3.0, IEC60870-5-104, IEC60870-5-103
Advanced Communications
Easy integration into new or existing infrastructure
With several Ethernet and serial port options, and a variety of communication protocols, the 3 Series provides advanced and flexible communication selections for new and existing applications.
The 3 Series supports various industry standard protocols such as, IEC 61850, Modbus RTU, Modbus TCP/IP, DNP3.0, IEC 60870-5-103 and IEC 60870-5-104 providing simplified and easy integration into new and existing applications.
Drawout Construction
The 3 Series offers a complete drawout feature eliminating the need for rewiring after testing has been concluded. With our advanced draw-out construction, the 3 series can be drawn-out without having to disconnect any communication cables. e.g. fiber, copper, RJ45, etc and helps retain communication status even after a relay has been withdrawn from its case.
The 3 Series’s advanced draw-out construction allows removal without disconnecting rear communications cables.
Front Panel
Display
A 4 line liquid crystal display (LCD) allows visibility under varied lighting conditions. When the keypad and display are not being used, system information is displayed by scrolling through a maximum of 30 user-defined default messages. These default messages appear only after a user-defined period of inactivity. The metering summary page is displayed to show original metered values.
EnerVista™ software
The EnerVista suite is an industry leading set of software programs that simplifies every aspect of using a 3 Series Relay. The EnerVista suite provides all the tools to monitor the status of the protected asset, maintain the relay, and integrate the information measured into DCS or SCADA monitoring systems. Convenient COMTRADE and sequence of event viewers are an integral part of the set up software and are included to ensure proper protection and system operation. Learn More
Security - enabling NERC CIP compliance
Access Control
Multilin devices and relays are designed with simple but powerful security to enable reliability and compliance for virtually any project or implementation. With support for multi-level permissions and multi-factor supervisory controls, Multilin devices can help you manage the integrity of your system during commissioning, testing, implementation, and beyond. The 3 Series family provides separate authentication for settings and commands to the system. In addition, as discrete authentications for local and remote access, it also provides a supervisory control factor that can lock or unlock a device for configuration changes and other modifications.
Intrusion Detection
Multilin’s family of protection and control products can also help enable your security perimeter and intrusion detection programs. By providing essential alarming and logging of critical events, Multilin devices can help you detect potential breaches within your system and allow you to respond quickly and effectively. Specifically, unsuccessful access attempts are logged, alarmed, and lead to potential attackers being locked out. This ensures the reliability of your system during questionable activity control factor that can lock or unlock a device for configuration changes and other modifications.
Auditing and Reporting
With the Security Audit Trail reporting feature and support for Event logging of key activities such as configuration changes, Multilin devices can help ensure device and protection system integrity, and perform forensic auditing of activities and changes for compliance.
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Multilin 3 Series
The 3 Series family of protection relays are functional and economical protection...
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Multilin 8 Series
The Multilin⢠8 Series platform of advanced protection and control relays delivers high...
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Multilin UR Family
The Universal Relay family of protection and control products are built on a common...
View More
Multilin UR Family
Proven, State-of-the-Art Protection & Control Systems
The Universal Relay family of protection and control products are built on a common modular platform. All UR products feature high performance protection, expandable I/O, integrated monitoring and metering, high-speed communications, and extensive programming and configuration capabilities. The UR is the basis of simplified power management for the protection of critical assets.
Multilin UR Family
Proven, State-of-the-Art Protection & Control Systems
The Universal Relay family of protection and control products are built on a common modular platform. All UR products feature high performance protection, expandable I/O, integrated monitoring and metering, high-speed communications, and extensive programming and configuration capabilities. The UR is the basis of simplified power management for the protection of critical assets.
New and Enhanced Communication Capabilities
- New UR with process bus module supports IEC 61869 sample values, PTP master capabilities and SV switching (FW 7.9x)
- New UR process bus modules supporting IEC 61850-9-2LE/IEC 61869 Merging Units and IEC 61850-9-2 Hardfiber (FW 7.8x) Module Training available here
- Support switchable IEC 61850 Ed. 1 and Ed. 2 and redundant SNTP (FW 7.7x)
- New UR front panel with integrated 7” color, graphical display - providing operators with enhanced situational awareness (FW 7.6x)
- High density I/O module supporting up to 120 inputs or up to 72 contact outputs – eliminating the need for additional discrete devices (FW 7.6x)
Cyber Security - CyberSentry UR (FW v7.xx)
CyberSentryTM enables UR devices to deliver full cyber security features that help customers to comply with cyber security requirements (NERC CIP, IEEE 1686, IEC 62443, etc):
- Secured firmware upgrade: FW file includes hash code that enables authentication prior to being used for upgrading UR Relay (FW 7.9x)
Fully Compatible with IEC 61850-9-2LE or IEC61869 process bus schemes:
- Can connect to up to 8 merging units over -9-2LE or 61869
- Supports PRP, HSR, dual HSR and point-to-point process bus topology
- Provides support for GE Vernova’s IEC 61850 HardFiber Process Bus Solution
Extended Oscillography Records (FW v7.xx)
- Increased number of digital and analog channels (FW 7.90)
- Supports IEEE C37.111-1999/2013, IEC 60255-24 Ed 2.0 COMTRADE 2013 standard (FW v7.40)
- Configurable events allow for records of up to 45s at 64 samples per cycle
Protection and Control Functionality
- 6-distance zones and sub-cycle performance SW options (FW 8.0)
- New TGFD elements (FW 8.0)
- Inter-turn transformer and dedicated Harmonic/Inrush detection elements (FW 8.0)
- B30 supports up to sixteen feeders and six differential bus zones when equipped with -9-2LE process bus module, end-fault protection, partial P&C blocking due to SV status (FW7.9x)
- CT exclusion setting (FW 7.8)
- B30 supports up to sixteen feeders and six differential bus zones when equipped with -9-2LE process bus module, end-fault protection, partial P&C blocking due to SV status.
- Expanded Bay Controller Capabilities – providing a one box solution (FW 7.6x)
Key Features
- Synchrophasor measurement devices (PMU) that meet IEEE c37.118 (2014) across all protection applications
- Synchrophasor capabilities on generator, transformer, line distance, line differential and feeder applications
- Multiple configurable PMU elements (up to 6 on selected products)
- Extended Oscillography – captures extended events at 64 samples per cycle
- Event Recorder - 1024 time tagged events, with 0.5ms scan of digital inputs
- Data Logger - up to 16 channels with user selectable sampling rate
- Fault locator and user-programmable fault reports
- Breaker condition monitoring including breaker arcing current (I2t)
- Metering - current, voltage, power, power factor, frequency
- Broken Rotor Bar Detection and motor temperature via RTD inputs
Monitoring & Diagnostics
The UR includes high accuracy metering and recording for all AC signals. Voltage, current, and power metering are built into the relay as a standard feature. Current and voltage parameters are available as total RMS magnitude, and as fundamental frequency magnitude and angle.
Digital fault recorder summary with the latest information on the events, faults, transients and disturbances.
Control screen for the preconfigured bay with breaker & disconnect control in multiple pages using dedicated pushbuttons in the front panel.
Advanced Automation
The UR incorporates advanced automation features including powerful FlexLogic™ programmable logic, communication, and SCADA capabilities that far surpass what is found in the average protection relay. Each UR can be seamlessly integrated with other UR relays for complete system protection and control.
FlexLogic allows for the creation of customized logic schemes to fit most protection and control applications.
Key Features
- Complete IEC 61850 Process Bus solution providing resource optimization and minimizing total P&C life cycle costs
- Three independent 100Mbps Ethernet ports enable purpose specific LAN support that reduces latency effect of heavy traffic protocols on mission critical communication services
- Embedded IEEE 1588 time synch protocol support eliminates dedicated IRIG-B wiring requirements for IEDs
- Direct I/O secures high-speed exchange of binary data between URs
- Increase network availability by reducing failover time to zero through IEC62439-3 “PRP” support
Advanced Communications
The UR provides advanced communications technologies for remote data and engineering access, making it easy and flexible to use and integrate into new and existing infrastructures. Direct support for fiber optic Ethernet provides high-bandwidth communications allowing for low-latency controls and high-speed file transfers of relay fault and event record information. The available three independent and redundant Ethernet options provide the means to create fault tolerant communication architectures in an easy, cost-effective manner. The UR supports the most popular industry standard protocols enabling easy, direct integration into DCS and SCADA systems.
- IEC 61850-9-2LE 2LE or IEC 61869 point-to-point or networked or IEC61850-9-2 Hardfiber process bus support
- DNP 3.0 (serial & TCP/IP)
- Ethernet Global Data (EGD)
- IEC 60870-5-103 and IEC 60870-5-104
- Modbus RTU, Modbus TCP/IP
- HTTP, TFTP, SFTP and MMS file transfer
- Redundant SNTP and IEEE 1588 for time synchronization
- PRP as per IEC 62439-3
- IRC module that combines C37.92 multimode and direct connection singlemode
- Supports Routable GOOSE (R-GOOSE)
Interoperability with Embedded IEC 61850
Process Bus System represents a true breakthrough in the installation and ownership of protection and control systems, by reducing the overall labor required for substation design, construction, and testing. This innovative solution addresses the three key issues driving the labor required for protection and control design, construction and testing:
- Every substation is unique making design and drafting a one-off solution for every station
- Miles of copper wires needs to be pulled, spliced and terminated
- Time consuming testing and troubleshooting of thousands of connections must be performed by skilled personnel
The HardFiber System was designed to address these challenges and reduce the overall labor associated with the tasks of designing, documenting, installing and testing protection and control systems. By specifically targeting copper wiring and all of the labor it requires.UR delivers process bus through the HardFiber System or 61850-9-2LE/61869 process bus module. They allow for greater utilization and optimization of resources with the ultimate goal of reducing the Total Life Cost (TLC) for protection & control.
Learn More
The UR connects to GE Vernova MU320 or third-party merging units using standard IEC 61869 or IEC 61850-9-2LE communication protocols.
Cyber Secutrity - CyberSentry™ UR (FW v7.4xx)
CyberSentry enables UR devices to deliver full cyber security features that help customers to comply with NERC CIP and NITIR 7628 cyber security requirements through supporting the following core features:
Secure FW upgrade
UR FW files v7.9 and up now include a hash code that allows for authentication prior to being used for upgrading UR devices
Password Complexity
Supporting up to 20 alpha- numeric or special characters, UR passwords exceed NERC CIP requirements for password complexity. Individual passwords per role are available.
AAA Server Support (Radius)
Enables integration with centrally managed authentication and accounting of all user activities and uses modern industry best practices and standards that meet and exceed NERC CIP requirements for authentication and password management.
Role Based Access Control (RBAC)
Efficiently administrate users and roles within UR devices. The new and advanced access functions allow users to configure up to five roles for up to eight configurable users with independent passwords. The standard “Remote Authentication Dial In User Service” (Radius) is used for authentication.
Event Recorder (Syslog for SEM)
Capture all cyber security related events within a SOE element (login, logout, invalid password attempts, remote/local access, user in session, settings change, FW update, etc), and then serve and classify data by security level using standard Syslog data format. This enables UR devices integration with established SEM (Security Event Management) systems.
EnerVista™ Software
The EnerVista™ suite is an industry-leading set of software programs that simplifies every aspect of using the UR. The EnerVista™ suite provides all the tools to monitor the status of the protected asset, maintain the relay, and integrate information measured by the UR into DCS or SCADA monitoring systems. Convenient COMTRADE and Sequence of Events viewers are an integral part of the UR setup software included with every UR relay, to carry out postmortem event analysis and ensure proper protection system operation.
Learn More
Bus
B90 - Multiple Sections Low Impedance Busbar Protection
Intended for large substations having complex-split busbar schemes, the B90 is an advanced low-impedance differential protection system.
B30 - Multiple Sections Low Impedance Busbar Protection
The B30 is a cost effective-advanced protection system that fits busbars with up to 06 circuits and two protection zones. The B30 provides advanced elements that make the B30 and extremely fast and secure protection system.
B95Plus – Legacy
Manufacturing for this product has been discontinued. As an alternative, please refer to the B30,and P74x relays.
Generation
G60 - Medium to Large Generators
Provides comprehensive primary and backup protection for medium and large generators. Including/covering 100% stator and rotor (field) ground fault detection.
G30 - Combined Generator & Transformer Protection
G30 relays are under last-time buy. Orders may be placed until 19th August 2025, and will be fulfilled based upon availability.
Transformer
T60 - Medium to Large Transformers
A fully featured transformer protection system suitable for power transformers of any size that require current differential function.
T35 - Basic Transformer Protection, Multiple CTs
Basic transformer protection system capable of protecting combined main power transformers and up to five feeders downstream.
Transmission Line & Capacitor Bank
D60 - Fully Featured Distance Protection
The ideal solution for providing reliable and secure primary and backup protection of transmission lines.
D30 - Backup Distance Protection
The cost-effective choice for the primary protection of sub-transmission systems or backup protection of transmission systems.
L90 – Complete Line Protection System
Line protection system with segregated line current differential and complete distance protection.
L60 - Line Phase Comparison Protection
Extremely fast line phase comparison system, suitable for two or three-terminal transmission lines.
L30 - Sub-Transmission Line Current Differential Protection
A cost-effective phase segregated line current differential system, intended to provide primary protection for MV cables and two-three terminal sub-transmission lines or backup protection to transmission lines.
C70 - Capacitor Bank Protection
An integrated protection, control, and monitoring device for shunt capacitor banks.
C90Plus - Legacy
Manufacturing for C90Plus Bay Controller has been discontinued. As an alternative, please refer to the C60 with Firmware 7.7 or newer and User Interface Option E: 7” Graphical Front Panel Display.
D90Plus – Legacy
Manufacturing for this product has been discontinued. As an alternative, please refer to the D60 with Firmware 7.7 or newer and User Interface Option E: 7” Graphical Front Panel Display.
Substation and Breaker Controller
C60 - Breaker Controller
The C60 is a substation hardened controller that provides a complete integrated package for the protection, control, and monitoring of circuit breakers, supporting dual-breaker busbar configurations, such as breaker-and-half or ring bus schemes.
C30 - I/O Logic Controller
The C30 is designed to perform substation control logic that can also expand the I/O capability of protection devices and replace existing Sequence of Events (SOE) recorders.
C90Plus – Legacy
Manufacturing for C90Plus Fast Load Shed has been discontinued.
Distribution Feeder
F60 - Feeder Protection with Hi-Z Fault Detection
Comprehensive feeder protection, control, advanced communications, monitoring and metering in an integrated, economical, compact package and more.
F35 - Multiple Feeder Protection
A cost-effective device for feeders primary protection
Industrial & Network
M60 - Motor Protection
Comprehensive protection and control solutions for medium to large-sized three-phase motors.
N60 - Network Stability and Synchrophasor Measurement
This network stability and synchrophasor measurement system is intended to be used on load shedding, remedial action, special protection and wide area monitoring and control schemes.
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Multilin 8 Series
Innovative protection and control relay platform
The Multilin™ 8 Series platform of advanced protection and control relays delivers high quality and performance management, protection and control for transformer, generator, motor and feeder applications.
Comprised of the 845 transformer protection relays, 889 generator protection relays, 869 motor protection relays and 850 feeder protection relays, the 8 Series platform features innovative technology and design, as well as uncompromising service and support.
Multilin 8 Series
Innovative protection and control relay platform
The Multilin™ 8 Series platform of advanced protection and control relays delivers high quality and performance management, protection and control for transformer, generator, motor and feeder applications.
Comprised of the 845 transformer protection relays, 889 generator protection relays, 869 motor protection relays and 850 feeder protection relays, the 8 Series platform features innovative technology and design, as well as uncompromising service and support.
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 Vernova’s 10 year warranty plan
- Fully designed, tested and assembled at GE Vernova facilities
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Monitoring & Diagnostics
The Multilin 8 Series platform features a number of robust capabilities for motor, transformer, generator and feeder monitoring and diagnostics.
Motor Monitoring & Diagnostics
Integrated, cost effective motor monitoring and diagnostics are available in the Multilin 869 motor protection relay. Existing relay data is leveraged to detect electrical, thermal or mechanical abnormalities before they become critical motor failures. Motor monitoring and diagnostic capabilities include:
- Advanced monitoring and trending for condition-based status of electrical conditions that can affect motor performance
- Continuous, proactive monitoring of thermal capacity used for early identification of thermal stresses
- Electrical signal analysis and motor current signature analysis to identify common mechanical abnormalities
Transformer Monitoring & Diagnostics
Integrated electrical and dissolved gas analysis (DGA) for comprehensive transformer monitoring and diagnostics is available with the Multilin 845 transformer protection relay. The 845 provides advanced notification of potential issues before they become critical, and features detailed learned data, summarized pre/post-fault records, and integration with GE Vernova’s DGA devices to collect, trend, and analyze a transformer’s fault gases. This enables operators to minimize costly unplanned outages and equipment failures.
Generator Monitoring & Diagnostics
The Multilin 889 generator protection relay provides comprehensive generator monitoring and diagnostics, including a generator health report that provides an easy-to-read snapshot of a generator's health and operating condition. Based on graphical representation and trend values of the generator historical data, the 889 enables operators and asset managers to identify process issues and maintenance requirements before damage occurs and costly repairs are required.
Feeder Monitoring & Diagnostics
Feeder and breaker health monitoring and diagnostics are available in the Multilin 850 feeder protection relay. The 850 provides high accuracy metering and recording for all AC signals. Voltage, current, and power metering are built into the relay as a standard feature. Current and voltage parameters are available as total RMS magnitude, and as fundamental frequency magnitude and angle. The 850 also delivers comprehensive data logging, trip and close circuit monitoring elements, and a breaker arcing current element.
Communications
The 8 Series provides advanced communications technologies for remote data and engineering access, making it easy and flexible to use and integrate into new and existing infrastructures. Direct support for copper/fiber optic Ethernet provides high-bandwidth communications allowing for low-latency controls and high-speed file transfers of relay fault and event record information. The 8 Series also supports two independent IP addresses providing high flexibility for the most challenging of communication networks.
Providing several Ethernet and serial port options and supporting the widest range of industry standard protocols, the 8 Series enables easy, direct integration into DCS and SCADA systems. The 8 Series supports the following protocols:
- IEC 61850 (8 Clients, 4 Logical Devices, Tx & Rx expansion, Analog GOOSE), IEC 62439 / PRP
- DNP 3.0 serial, DNP 3.0 TCP/IP, IEC 60870-5-103, IEC 60870-5-104
- Modbus RTU, Modbus TCP/IP
The 8 Series has two interfaces as USB front port and Wi-Fi for ease of access to the relay.
- Simplify set-up and configuration
- Simplify diagnostic retrieval
- Eliminate personnel in front of switchgear
- WPA-2 security
Cyber Security
The Multilin 8 Series platform relays feature cyber security capabilities that enable the devices to deliver full cyber security data classification by security level using statures that help operators to comply with NERC CIP guidelines and regulations.
AAA Server Support (Radius/LDAP)
Enables integration with centrally managed authentication and accounting of all user activities and uses modern industry best practices and standards that meet and exceed NERC CIP requirements for authentication and password management.
Role Based Access Control (RBAC)
Efficiently administrate users and roles within UR devices. The new and advanced access functions allow users to configure up to five roles for up to eight configurable users with independent passwords. The standard “Remote Authentication Dial In User Service” (Radius) is used for authentication.
Event Recorder (Syslog for SEM)
Capture all cyber security related events within a SOE element (login, logout, invalid password attempts, remote/local access, user in session, settings change, FW update, etc), in standard Syslog data format. This will enable integration with established SEM (Security Event Management) systems.
Software & Configuration
The EnerVista™ suite is an industry-leading set of software programs that simplifies every aspect of using the Multilin 8 Series relays. EnerVista provides all the tools to monitor the status of the protected asset, maintain the device and integrate the information measured by the Multilin 8 Series, into SCADA or DCS process control systems. The ability to easily view sequence of events is an integral part of the setup software, as postmortem event analysis is critical to proper system management.
The setup tools within EnerVista Launchpad allow for the configuration of devices in real-time, by communicating via serial, Ethernet or modem connections, or offline by creating device setting files to be sent to devices at a later time.
Learn more about EnerVista Software.
8 Series Setup Software
8 Series Setup Software is single setup and configuration tool across the platform and can reduce device setup and configuration time.
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Multilin 3 Series
The 3 Series family of protection relays are functional and economical protection...
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Multilin 8 Series
The Multilin⢠8 Series platform of advanced protection and control relays delivers high...
View More
Multilin UR Family
The Universal Relay family of protection and control products are built on a common...
View More