Brand: GE Multilin™

Model: T60 Transformer Protection System

Product Type: Transformer Protection System

Performance and Features: The T60 is a comprehensive, high-speed protection system designed for medium and large power transformers. It ensures secure transformer differential protection and is compliant with IEEE® C37.91. The system includes improved security features for transformer energization and inrush, utilizing a superior adaptive 2nd harmonic restraint algorithm. Sensitive ground fault protection is provided to limit transformer damage, and integrated transformer thermal monitoring aids in asset management and maintenance optimization.

Technical Specifications:

• Protection and Control:

  • Dual-slope, dual-breakpoint differential restraint characteristic, including restrained and unrestrained differential
  • 2nd harmonic inrush inhibit and overexcitation inhibit
  • Thermal overload and time overcurrent protection for backup
  • Restricted ground fault protection
  • Loss-of-life, aging factor, and hottest spot monitoring
  • Five-zone backup distance protection with power swing detection and load encroachment function
  • Synchrocheck, ROCOF (Rate of Change of Frequency), over and under frequency elements

• Communications:

  • Up to three Ethernet ports (100Mb fiber or copper), RS485, RS232, RS422, G.703, C37.94
  • Multiple protocols: IEC 61850, DNP 3.0, Modbus® serial/TCP, IEEE 1588, IEC 60870-5-104 and 103, PRP, SNTP, HTTP, TFTP, EGD
  • Direct I/O for secure, high-speed data exchange between URs
  • Embedded managed Ethernet switch with four 100 Mbit fiber optic ports and two copper ports

• IEC 61850 Process Bus Interface:

  • Robust communications with up to 8 HardFiber Bricks
  • Redundant architecture for dependability and security

• Monitoring and Metering:

  • Current, voltage, power, energy, frequency, and temperature metering
  • Transformer monitoring including hottest spot, loss-of-life, and aging factor
  • Synchrophasors of voltage, current, and sequence components with a reporting rate of 1 to 120 frames/s
  • Advanced recording capabilities: 1024 event recorder, configurable waveform capture, and data logger

• Cyber Security:

  • CyberSentry™ provides high-end cyber security aligned with industry standards (NERC® CIP, AAA, Radius, RBAC, Syslog)

• Advanced Automation:

  • FlexLogic programmable logic for customized protection and control schemes
  • Seamless integration with other UR relays for complete system protection

• User-Definable Protection Functions:

  • Sixteen user-definable protection functions (FlexElements) for various applications including overvoltage, overpower, low power factor, temperature differential, and more