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Protection Relays
Line Protection

Home > Grid Automation > Protection Relays > Line Protection > D60


Multilin D60
Line Distance Protection System

The D60 is suitable for protecting transmission lines and cables including lines equipped with series compensation. The D60 supports dual-breaker applications and can be applied in single-pole or three-pole tripping applications. The D60 is applicable to different teleprotection schemes and includes inter-relay protection communications via direct fiber as well as different interfaces. The D60 also provides synchrophasor measurement over Ethernet per IEEE C37.118.

Key Benefits

  • Five zone quad or mho, phase and ground distance protection with optional 6-zones and sub-cycle distance performance
  • Advanced IEC 61850 Ed. 1 and Ed. 2 certified implementation, complete settings via SCL files and flexible process bus support (IEC 61850-9-2LE, IEC 61869 or IEC 61850-9-2 Hardfiber) ensures interoperability, device managing optimization and reduced cost of ownership
  • Routable GOOSE (R-GOOSE) enables GOOSE messages going beyond the substation, which enables wide area protection and control applications
  • Reliable and secure protection on series-compensated lines
  • Flexible programmable logic for building customized schemes
  • Simplified teleprotection interfaces with direct I/O communications
  • Advance Cyber security features “CyberSentryTM” that helps meet modern industry requirements
  • Phasor Measurement Unit (synchrophasor) according to IEEE® C37.118 (2014) and IEC® 61850-90-5 support
  • Application flexibility with multiple I/O options including high density I/O, programmable logic, modularity, and specific customization
  • An integrated large, full color display, provides real-time visualization and control of the protected bay, via a bay mimic as well as annunciator functionality and graphical visualization of phasors

Applications

  • Overhead lines including series-compensated lines and underground cables
  • Single and dual-breaker circuits requiring single pole/three-pole autoreclosing
  • Circuits with in-zone power transformers
  • Secure application with CCVTs backup protection for generators, transformers and reactors
  • Ground isolated and Peterson-coil systems
What's New
Protection & Control
Monitoring & Diagnostics
Communications
Software & Security
UR 1 integrated Platform across all 18 applications
Communications icon

New and Enhanced Communication Capabilities

  • New UR process bus modules supporting IEC61850-9-2LE Merging Units and IEC61850-9-2 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 icon

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)
HardFiber icon

Fully Compatible with GE's Multlilin HardFiber System - Provides support for GE's IEC 61850 HardFiber Process Bus Solution:

Complete IEC 61850 Process Bus Solution providing resource optimization and minimizing total P&C life cycle costs. Learn more

Oscillography icon

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
Shield icon

New and Enhanced Protection and Control Functionality (FW version 5.90)

  • Expanded Bay Controller Capabilities – providing a one box solution (FW 7.6x)
  • Added backup protection functions with sensitive reverse power element "32S" 
  • Added over/under/rate of change of frequency elements 
  • New thermal overload element 
  • New broken conductor element 
  • Customizable version of the POTT and DCB schemes "POTT1 and DCB1" (FW v7.20)
  • Neutral directional overcurrent with dual polarity criteria "67N" (FW v 7.20)
Protection & control icon

Protection and Control Functionality

  • 6-distance zones and sub-cycle performance SW options (FW 8.0)
  • New TGFD and Inrush detection elements (FW 8.0)
  • Expanded Bay Controller Capabilities – providing a one box solution (FW 7.6x)

Key Features

  • Up to six phase distance with independent compensation settings for in-zone power transformers
  • Up to six ground distance with independent self and mutual zero-sequence compensation
  • Sub-cycle distance performance available
  • Out-of-step tripping and power swing blocking
  • Synchronism check for dual-breaker applications
  • Four-shot dual-breaker autorecloser
  • VT fuse failure detector, compensated overvoltage
  • Phase and negative sequence directional overcurrent, neutral directional with dual polarity criteria, broken conductor, TGFD thermal overload and more.

Protection & Control

The D60 is a high-end, cost-effective distance protection relay intended for protecting transmission lines and cables, providing reliable and secure operation even under the worst case power system conditions. Part of the Universal Relay family, the D60 comes with a variety of versatile features, truly integrating protection, monitoring, metering, communication and control in one easy-to-use device. The Universal Relay family offers a high degree of modularity in its design and functionality, providing superior performance in protection and control, while meeting the toughest requirements of the marketplace.

Functional Block Diagram

D60 Block Diagram

ANSI® Device Numbers & Functions

Device Number Function
21G Ground Distance
21P Phase Distance
25 Synchrocheck
27P Phase Undervoltage
27X Auxiliary Undervoltage
32 Sensitive Directional Power
49 Thermal Overload
50BF Breaker Failure
50DD Current Disturbance Detector
50G Ground Instantaneous Overcurrent
50N Neutral Instantaneous Overcurrent
Device Number Function
50P Phase Instantaneous Overcurrent
50_2 Negative Sequence Instantaneous Overcurrent
51G Ground Time Overcurrent
51N Neutral Time Overcurrent
51P Phase Time Overcurrent
51_2 Negative Sequence Time Overcurrent
52 AC Circuit Breaker
59C Compensated Overvoltage
59N Neutral Overvoltage
59P Phase Overvoltage
Device Number Function
59X Auxiliary Overvoltage
59_2 Negative Sequence Overvoltage
67N Neutral Directional Overcurrent
67P Phase Directional Overcurrent
67_2 Negative Sequence Directional Overcurrent
68 Power Swing Blocking
78 Out-of-Step Tripping
79 Automatic Recloser
81U/O Under/Over Frequency, df/dt
ROCOF Rate of Change of Frequency

Key Features

  • P & M class synchrophasors of voltage, current and sequence components – 1 to 120 frames/sec
  • Metering - current, voltage, power, energy, frequency
  • Oscillography – analog and digital parameters at 64 samples/cycle
  • Event Recorder - 1024 time tagged events with 0.5ms scan of digital inputs
  • Setting for security audit trails for tracking changes to D60 configurations

Monitoring & Diagnostics

Monitoring & Diagnostics

The D60 is the single point for protection, control, metering, and monitoring in one integrated device that can be easily connected directly to HMI or SCADA monitoring and control systems.

Advanced Automation

The D60 incorporates advanced automation features including powerful FlexLogic™ programmable logic, communication, and SCADA capabilities that far surpass what is found in the average line protection relay. The D60 integrates seamlessly with other UR relays for complete system protection, including unit and auxiliary transformers, and balance of plant protection.

FlexLogic™ diagram

FlexLogic™ allows for the customization of D60 for custom protection, control and automation, allowing users to build line protection schemes and applications for their equipment.

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 eliminates 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, HSR or dual HSR support

Advanced Communications

The D60 provides for secure remote data and engineering access, making it easy and flexible to use and integrate into new and existing infrastructures. 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 D60 supports the most popular industry standard protocols enabling easy, direct integration into monitoring and SCADA systems.

  • • IEC 61850-9-2LE or IEC 61869 point-to-point or networked networked or IEC61850-9-2 Hardfiber process bus support
  • DNP 3.0 (serial & TCP/IP)
  • 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 Enbedded IEC 61850

Use the D60 with integrated IEC 61850 to lower costs associated with line distance protection, control and automation. GE’s leadership in IEC 61850 comes from thousands of installed devices and follows on years of development experience with UCA 2.0.

HardFiber system

The D60’s IEC 61850 Process Bus module is designed to interface with the Multilin HardFiber System, allowing bi-directional IEC 61850 fiber optic communications. The HardFiber System is designed to integrate seamlessly with existing Universal Relay applications, including protection functions, FlexLogic, metering and communications. Learn more

The D60 can also connect to GE MU320 or third-party merging units using standard IEC 61869 or IEC 61850-9-2LE communication protocols.

Cyber Security - 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 D60 relay. The EnerVista™ suite provides all the tools to monitor the status of the protected asset, maintain the relay, and integrate information measured by the D60 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

EnerVista Software