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Multilin T60
Transformer Protection System

The T60 is designed for various power applications, including autotransformers, generator step-up transformers, split-phase, angle regulating transformers and reactors. It uses multiple current and voltage inputs to provide primary protection and backup protection of transformers, including differential, ground differential, five distance zones, phase, neutral, and ground overcurrent, under and overvoltage, under and overfrequency, over-fluxing, and breaker failure.

Key Benefits

  • Secure high-speed protection for transformers, compliant with IEEE C37.91
  • Advanced IEC61850 Ed. 2 certified implementation, complete settings via SCL files and IEC 61850-9-2 process bus solution enable resource and platform managing optimization and reduce cost of ownership
  • Routable GOOSE (R-GOOSE) enables GOOSE messages going beyond the substation, which enables wide area protection and control applications
  • Improved security for transformer energization and inrush provided through a superior adaptive 2nd harmonic restraint algorithm
  • Three independent fiber or copper Ethernet ports for simultaneous/dedicated network connections with advanced 1 microsecond time synchronization via LAN with IEEE 1588 support
  • Integrated transformer thermal monitoring for asset management and maintenance optimization
  • Sensitive ground fault protection provides low- impedance differential protection down to 5% of the winding to limit transformer damage
  • Phasor Measurement Unit (synchrophasor) according to IEEE C37.118 (2011) and IEC 61850-90-5 support
  • CyberSentry™ provides high-end cyber security aligned to industry standards and services (NERC CIP, AAA, Radius, RBAC, Syslog)
  • Advanced fault and disturbance recording, including internal relay operating signals, eliminating the need for redundant recording devices
  • Reduced relay-to-relay wiring and associated installation costs through high-speed inter-relay communications
  • Supports English, French, Russian, Chinese, Turkish and German languages on the front panel, software and manuals
  • Supports latest edition of waveform capture (COMTRADE 2013) simplifying fault records management

Applications

  • Transformer asset monitoring using loss-of-life, aging factor, hottest spot
  • Applicable for transformers with up to six windings in a ring bus or breaker-and-a-half configuration
  • Reliable and secure protection for three-phase transformers, autotransformers, reactors, split-phase and phase angle regulating transformers
  • Stand-alone or component in automated substation control system
Protection & Control
Monitoring & Diagnostic
Communications
Software & Secutrity
What's New

Key Benefits

  • Dual-slope, dual-breakpoint differential restraint characteristic, restrained and unrestrained differential
  • 2nd harmonic inrush and overexcitation inhibit
  • Transformer overexcitation protection
  • Restricted ground fault
  • Loss-of-life, aging factor, hottest spot
  • Five zones backup distance protection with power swing detection and load encroachment function
  • Synchrocheck, ROCOF, over and under frequency

Protection & Control

The T60 transformer protection system is a comprehensive three-phase transformer relay designed to protect medium and large power transformers. The T60 provides automatic or user-definable magnitude reference winding selections for CT ratio matching, and performs automatic phase shift compensation for all types of transformer winding connections. The T60 algorithm allows the user to enable removal of the zero-sequence current even for delta-connected transformer windings, facilitating transformers with a variety of grounding configurations. As part of the Universal Relay (UR) Family, the T60 provides superior protection and control.

Functional Block Diagram

T60 Block Diagram

ANSI Divice Numbers & Functions

Device Number Function
21P Phase Distance
21G Ground Distance
24 Volts Per Hertz
25 Synchrocheck
27P Phase Undervoltage
27X Auxiliary Undervoltage
49 Thermal Overload
50BF Breaker Failure
50G Ground Instantaneous Overcurrent
50N Neutral Instantaneous Overcurrent
Device Number Function
50P Phase Instantaneous Overcurrent
50/87 Instantaneous Differential Overcurrent
51G Ground Time Overcurrent
51N Neutral Time Overcurrent
51P Phase Time Overcurrent
59N Neutral Overvoltage
59P Phase Overvoltage
59X Auxiliary Overvoltage
Device Number Function
67N Neutral Directional Overcurrent
67P Phase Directional Overcurrent
68 Power Swing Blocking
78 Out-of-Step Tripping
81O Overfrequency
81U Underfrequency
81R Rate of Change of Frequency (ROCOF)
87G Restricted Ground Fault
87T Transformer Differential

Key Features

  • Metering - current, voltage, power, energy, frequency, temperature, transformer monitoring
  • P & M class synchrophasors of voltage, current and sequence components – 1 to 120 frames/sec
  • Oscillography – analog and digital parameters at 64 samples/cycle
  • Event Recorder - 1024 time tagged events with 0.5ms scan of digital inputs
  • Data Logger - 16 channels with sampling rate up to 1 sample / cycle
  • Setting for security audit trails for tracking changes to T60 configurations

Monitoring & Diagnostic

The T60 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. For power quality applcations, harmonic measurements (up to the 25th) for voltage and current are available. T60 can monitor, calculate and log hottest-spot temperature, aging factor and loss-of-life data over a long period. This data, combined with economic analysis, allows criteria to be developed regarding the best time at which to replace a power transformer due to load growth, i.e. to minimize the cost without significantly increasing the risk.

Monitoring & Diagnostic

The B30 is the single point for protection, control, metering, and monitoring in one integrated device that can easily be connected directly into DCS or SCADA monitoring and control systems like Viewpoint Monitoring.

Advanced Automation

The T60 incorporates advanced automation features including powerful FlexLogic™ programmable logic, communication, and SCADA capabilities that far surpass what is found in the average transformer relay. The T60 integrates seamlessly with other UR relays for complete system protection.

Advanced Automation

FlexLogic™ allows for the customization of the T60 to operate and control the breakers and other auxiliary devices needed to fit most generator protection schemes and 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 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” support

Advanced Communications

The T60 provides advanced communications technologies for remote data and engineering access, making it the most advanced and flexible transformer protection relay 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 T60 supports the most popular industry standard protocols enabling easy, direct integration into DCS and SCADA systems.

  • IEC 61850 Ed. 2 with 61850-9-2 (Process Bus) and 61850-90-5 (synchrophasors) 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
  • SNTP and IEEE 1588 for time synchronization
  • PRP as per IEC 62439-3
  • Supports Routable GOOSE (R-GOOSE)

UR Switch Module

UR Switch Module

In addition to providing high-speed connectivity directly to your Universal Relay, the UR Switch Module provides an additional 4 fiber Ethernet ports, for connection to other relays in the system as well as upstream connectivity. It also provides 2 RJ45 copper Ethernet ports which can be used to connect local devices such as PCs, meters, or virtually anything else in the system.

The UR Switch Module provides a simple way to add fully-managed Ethernet networking to your relays and devices without the need for additional hardware or a dedicated communications cabinet.

The UR Switch Module includes all of the management and features that come with all MultiLink managed switches, and can be easily integrated into a network that has other Ethernet switches.

When used in a ring topology with other UR Switch Modules or MultiLink Switches, the UR Switch Module can be configured to use MultiLink’s Smart RSTP feature to provide industry-leading network recovery for ring topologies, at a speed of less than 5ms per switch. Learn More

Interoperability with Enbedded IEC 61850

Use the T60 with integrated IEC 61850 to lower costs associated with generator 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.

The T60’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

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:

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 T60 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 T60 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

New and Enhanced Communication Capabilities

  • Routable GOOSE (R-GOOSE) enables GOOSE messages going beyond the substation, which enables wide area protection and control applications (FW v7.40)
  • Increases GOOSE message reception up to 64 remote devices (FW v7.40)
  • IEC 61850 in line with Edition 2, IEC 61850 SCL file for all relay's setting (FW 7.30)
  • Three independent Ethernet ports
  • Time synchronization via IEEE 1588 (FW v7.00)
  • PRP as per IEC 62439-3 (FW 7.10)
  • IEC 60870-5-103 (FW v7.20)
  • New IRC module that combines C37.92 multimode and direct connection singlemode (FW v7.20)

Cyber Security - CyberSentry UR (FW v7.xx)

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:

  • Password Complexity
  • AAA Server Support (Radius)
  • Role Based Access Control (RBAC)
  • Event Recorder (Syslog for SEM)

Fully Compatible with the Multilin 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

Extended Oscillography Records (FW v7.xx)

  • 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

T60 Protection System to Deliver Synchrophasor Capabilities (FW version 5.90)

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

  • New thermal overload element
  • New CT failure element for increased current differential selectivity (FW version 7.00)
  • Rate of Change of Frequency "ROCOF" (FW v7.20)

New RRTD and RTD Alarm and Trip Settings

The T60 offers RTD alarm and trip settings to provide advanced monitoring of power transformers’ temperature. In addition, the RRTD module enables remote monitoring and metering of up to 12 programmable RTDs which reduces the number of RTD cables and provides temperature backup protection (firmware version 5.70). Learn More