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T60 Transformer Management Relay


T60 Transformer Management Relay

 

The T60, a member of the UR family of protection relays, is a 3-phase, multiple winding, transformer relay intended for the primary protection and management of small, medium and large power transformers.

The T60 combines percent and instantaneous differential with Overcurrent protection along with a whole suite of current, voltage and frequency protection elements, and multiple settings groups in one easily configured, economical package. An innovative improvement to the traditional harmonic inrush inhibit of the percent differential element increases security while maintaining fault response performance.

What's New in the T60:

New Software options allow the T60 to protect Power Transformers with up to 5 windings / current sources
The Multilin T60 Transformer Protection relay can now include a third CT/VT module (DSP) to protect power transformers with up to 5 current sources, making the T60 the right choice for complicated power transformer protection schemes, i.e. breaker and a half in the HV winding and multiple feeders in the LV winding (firmware version 5.70).
New RRTD and RTD alarm and trip settings
The Multilin 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).
Fully Compatible with GE's Multlilin HardFiber System - Provides support for GE's IEC 61850 HardFiber Process Bus Solution:
- Complete IEC61850 Process Bus Solution providing resource optimization and minimizing total P&C lifecycle costs
Security Enhancements - Enabling NERC CIP compliance:
- Dual Permission access requiring live permission from both the user and from SCADA operators before settings can be changed or commands can be given to the relay
- Logging of user commands in the security audit trail relay - creates a record and sequence of events for troubleshooting and security auditing
Ambient Temperature Monitoring:
- Provides alarms when the ambient temperature exceeds hot extreme

Features and Benefits
  • FlexLogic™ programmable logic
  • Virtual I/O (reduce hardware cost)
  • Expandable I/O
  • Flash memory for field upgrades
  • Optional user programmable pushbuttons
  • User programmable LEDs, fault reports, display messages, and self tests
  • Drawout modules for serviceability
  • Common modules (reduce spares cost)
  • Test mode for I/Os
  • IRIG-B time synchronization and repeater
  • Stepped Distance protection - 3 zones of stepped transformer backup distance protection
Applications
  • Small, medium, and large power transformers
  • Up to 5 restraint windings
Protection and Control
  • Percent differential
  • Instantaneous Differential
  • Dynamic Inrush Inhibit
  • Overexcitation Inhibit
  • Low impedance biased restricted ground fault
  • Phase, ground and neutral O/C
  • Phase overvoltage
  • Underfrequency
  • Multiple setting groups
  • Tripping without Logic for direct tripping without the need for configuring Flexlogic Equations
  • Double Point Breaker/Switch Status
  • Support RTD inputs and RRTD module for temperature protection
Monitoring and Metering
  • Current, voltage, power metering
  • Current, voltage phasors
  • 64 samples/cycle oscillography
  • 1024 Sequence of Events recorder
  • Self diagnostics
  • Advanced monitoring with Hot spot, Transformer Aging and Loss of Life elements
User Interface
  • 2 x 20 character front panel display and keypad for local access
  • 48 programmable LED indicators
  • User-programmable pushbuttons providing local control
  • Multi-language support - French, Chinese, Russian options
  • EnerVista™ UR Setup software for configuration, monitoring and troubleshooting
Communications
  • Front Panel RS232 port
  • Up to two RS485 ports (up to 115 kbps)
  • Ethernet port: Redundant 10BaseFL or 100BaseFX fiber optics
  • Embedded Ethernet Switch for direct networking of UR devices
  • Inter-relay communications interfaces, RS422, G.703, IEEE C37.94
  • Direct I/O - Exchange inputs and outputs between relays with reduced wiring
  • Modbus RTU and TCP/IP
  • IEC61850
  • DNP 3.0 RTU and TCP/IP
  • IEC60870-5-104
  • Ethernet Global Data (EGD)
Security
  • Remote and Local Setting and Control passwords
  • Configurable lockout responses to unsuccessful password access attempts
  • Successful password access logged in Event Record