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 IEC 61850 Ed. 1 and Ed. 2 certified implementation, complete settings via SCL files and flexible process bus support (IEC 61850-9-2LE 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
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
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)
Reduced relay-to-relay wiring and associated installation costs through high-speed inter-relay communications
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
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
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
