English
简体中文
News
Get to know our latest news
Multilin UR & UR Plus Proven, State-of-the-Art Protection & Control Systems
Source: | Author:kongjiang | Published time: 2026-09-20 | 25 Views | 🔊 Click to read aloud ❚❚ ▶ | Share:
The Universal Relay (UR) is a family of leading-edge protection and control products built on a common modular platform. All UR products feature high-performance protection, expandable I/O options, integrated monitoring and metering, high-speed communications, and extensive programming and configuration capabilities. The UR forms the basis of simplified power management for the protection of critical assets, either as a stand-alone device or within an overall power automation system.

Multilin UR & UR Plus  Proven, State-of-the-Art Protection  & Control Systems

KEY BENEFITS
• Modular construction: common hardware, reduced stock of spare parts, plug-and-play modules for maintenance cost savings and simplification
• Proven flexibility and customization capabilities make UR/URPlus devices suitable to retrofit almost any kind of legacy P&C scheme
• Large HMI and annunciator panels provide local monitoring & control capabilities, and back up the substation HMI
• Phasor Measurement Unit (synchrophasor) according to IIEEE® C37.118 (2011) and IEC 61850-90-5 directly streamed from your protective device
• Three Ethernet ports enable purpose-specific LAN support that eliminates the latency effect of heavy traffic protocols on mission-critical communication services.
• Embedded IEEE 1588 time synchronization protocol support eliminates dedicated IRIG-B wiring requirements for P&C devices
• Complete IEC 61850 Process Bus solution provides resource optimization and minimizes total P&C life cycle costs
• Increase network availability by reducing failover time to zero through IEC 62439-3 “PRP” support
• CyberSentry provides high-end cyber security aligned to industry standards and services (NERC CIP-based, AAA, RADIUS, RBAC, Syslog)
• Enhanced CT/VT module diagnostics verify analog signal integrity using an advanced algorithm, ensuring reliability

• Reduces system event analysis effort with the support of embedded high-end and extended recording functionality.

UR1HH

UR6AV

UR6CH

UR6DH

UR6EV

UR6PH

UR6TH

UR8AH

UR8FH

UR8FV

UR9CH

UR9EH

UR9KH

URRHH

APPLICATIONS
• Protection, control, monitoring and supervision of power assets across generation, transmission, distribution, substation and industrial systems
• Utility substation and industrial plant automation
• Digital fault recording and Sequence of Event (SOE) recording
• Predictive maintenance through data analysis and trending
• Synchrophasor-based monitoring and control systems with specialized PMU devices that support multiple feeders
• Complex protection & control and wide area monitoring solutions with complete diagnostic and automation capabilities (URPlus).
FEATURES
Protection and Control
• Fast and segregated line current differential and distance protection functionality in a single device
• Phase-segregated line current differential with adaptive restraint and ground differential, stub bus protection
• Phase distance (five zones) with independent settings for compensation
• Single-pole tripping, breaker-and-half with independent current source support
• Complete generator protection with 100% stator ground fault detection with sub-harmonic injection and field ground protection
Communications
• Networking interfaces: 10 or 100MB copper or fiber optic Ethernet, RS485, RS232, RS422, G.703, C37.94, up to three independent Ethernet ports
• Multiple protocols: IEC 61850, DNP 3.0 and Modbus serial/TCP, IEEE 1588, IEC 60870-5-104 and 103, PRP, SNTP, HTTP, TFTP, EGD
• Direct I/O: secure, high-speed exchange of data between URs for direct transfer trip and I/O extension applications
IEC 61850 Process Bus Interface
• Robust communications with up to 8 HardFiber Bricks
• Redundant architecture for dependability and security
Monitoring and Metering
• Synchrophasors in select products with IEEE C37.118 (2011) and IEC 61850-90-5 support
• Advanced recording capabilities deliver a 1024-event recorder, configurable and extended waveform capture, and data logger
• Fault locator and user-programmable fault reports
• Breaker condition monitoring, including breaker arcing current (I2t), breaker re-strike, and breaker flashover • Metering: current, voltage, power, power factor, frequency, voltage & current harmonics, energy, demand, phasors, etc
EnerVista™ Software
• Graphical Logic Designer and Logic Monitor to simplify configuration and testing procedures via EnerVista UR Engineer
• Service and update notification toolset ensures device documents and software are up-to-date via EnerVista Launchpad

• EnerVista Integrator provides easy integration of data in the UR Family into new or existing monitoring and control systems.

Overview
The Universal Relay (UR) is a family of leading-edge protection and control products built on a common modular platform. All UR products feature high-performance protection, expandable I/O options, integrated monitoring and metering, high-speed communications, and extensive programming and configuration capabilities. The UR forms the basis of simplified power management for the protection of critical assets, either as a stand-alone device or within an overall power automation system.
The UR is managed and programmed through EnerVista Launchpad. This powerful software package, which is included with each relay, not only allows the setpoints of the relay to be programmed, but also provides the capability to manage setpoint files, automatically access the latest versions of firmware/ documentation, and provide a window into the substation automation system.
The UR can be supplied in a variety of configurations and is available as a 19-inch rack horizontal mount unit or a reduced size (¾) vertical mount unit. The UR consists of the following modules: power supply, CPU, CT/VT input, digital input/output, transducer input/output, inter-relay communications, communication switch, and IEC Process Bus. All hardware modules and software options can be specified at the time of ordering.
Protection and Control
The UR incorporates the most complete and unique protection algorithms to provide unparalleled security and system uptime. The UR selector guide (in the following pages) lists all the protection elements found in each relay. To support the protection and control functions of the UR, various types and forms of I/O are available (specific capabilities are model-dependent). Supported I/Os include:
CTs and VTs
Up to 24 analog current transformer (CT) and voltage transformer (VT) signals can be configured to monitor AC power lines. Both 1 A and 5 A CTs are supported. Special function modules are available, including: a CT module with sensitive ground input to provide ground fault protection on high-impedance grounded systems, and a high-impedance fault detection module that provides fast and reliable detection of faults caused by downed conductors.
Digital I/O
Up to 96 contact inputs (with utility voltage rating up to 250V), and up to 64 contact outputs, are available and can be used to monitor and control a wide range of auxiliary equipment found within a substation or other protection application. Types of digital I/O cards include trip-rated Form-A, Form-C, Fast Form-C, latching, and Solid State Relay (SSR), with or without DC voltage, current monitoring, and isolated inputs (with auto burnish feature). Mechanically latching outputs can be used to develop secure interlocking applications and replace mechanical switches and lockout relays. Form-A digital outputs have activation speeds of less than 4 ms, and both wet and dry contacts are supported.
Solid-state output modules with high current-breaking capability, fast tripping and reset time are ideal for direct tripping applications.
Transducer I/O
RTDs and DCmA cards are available to monitor system parameters, such as temperature, vibration, pressure, wind speed, and flow. Analog outputs can be used for hardwired connections from the controller to a SCADA system, to a programmable logic controller (PLC), or to other user interface devices (eg. panel display).
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
FlexLogic is the powerful UR-platform programming logic engine that provides the ability to create customized protection and control schemes, minimizing the need and associated costs of, auxiliary components and wiring. Using FlexLogic, the UR can be programmed to provide the required tripping logic along with custom scheme logic for breaker control (including interlocking with external synchronizers), transfer tripping schemes for remote breakers, and dynamic setting group changes.
Scalable Hardware
The UR is available with a multitude of I/O configurations to suit the most demanding application needs. The expandable modular design allows for easy configuration and future upgrades.
• Multiple CT/VT configurations allow for the implementation of many different schemes, including concurrent split-phase and differential protection.
• Flexible, modular I/O covering a broad range of input signals and tripping schemes with trip-rated Form-A, SSR, Form-C, and mechanically latched relays.
• Inter-relay communications module that enables the sharing of digital status and analog values between UR relays for control, fast tripping, or teleprotection applications
• Types of digital outputs include trip-rated Form-A and SSR mechanically latching, and Form-C outputs
• Form-A and SSR outputs available with optional circuit continuity monitoring and current detection to verify continuity and health of the associated circuitry
• IEC 61850 Process Bus delivering advanced protection and control capabilities while providing significant savings on the total life cost of electrical substations
• RTDs and DCmA inputs are available to monitor equipment parameters such as temperature and pressure
Monitoring and Metering
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.
Fault and Disturbance Recording
The advanced disturbance and event recording features within the UR can significantly reduce the time needed for postmortem analysis of power system events and the creation of regulatory reports. Recording functions include.
• Sequence of Event (SOE) - 1024 time-stamped events (UR Relays)- 8192 time-stamped events (URPlus)
• Oscillography- 64 digital & up to 40 analog channels - Events with up to 45s length
• Data Logger and Disturbance Recording - 16 channels, up to 1 sample/cycle/ channel
• Fault Reports - Powerful summary report of pre-fault and fault values
The very high sampling rate and large amounts of storage space available for data recording in the UR allow for the capture of complex events and can eliminate the need for installing costly stand-alone recording equipment.
Advanced Device Health Diagnostics
The UR performs comprehensive device health diagnostic tests at startup and continuously during run-time to test its own major functions and critical hardware. These diagnostic tests monitor for conditions that could impact security and availability of protection, and present device status via SCADA communications and front panel display. Providing continuous monitoring and early detection of possible issues helps improve system uptime.
• Comprehensive device health diagnostic performed at startup
• Monitors the CT/VT input circuitry to validate the integrity of all signals

• Monitors internal DC voltage levels that allow for proactive maintenance and increased uptime.