Line Distance Protection System

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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.

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Key Benefits

• Five zone quad or mho, phase and ground distance protection

• Advanced IEC 61850 Ed. 1 and Ed. 2 certified implementation, complete settings via SCL files and IEC 61850-9-2 process bus solution 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

• Superior phase selection algorithm

• Supports multiple standard pilot schemes

• Flexible programmable logic for building customized schemes

• Simplified teleprotection interfaces with direct I/O communications

• Robust network security enabling Critical Infrastructure Protection

• Phasor Measurement Unit (synchrophasor) according to IEEE® C37.118 (2011) 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 colour 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

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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

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