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D90Plus—Sub-cycle Distance Protection
KEY BENEFITS
>Secure sub-cycle distance protection to improve system stability and increase line loading True Capacitively Coupled Voltage Transformers (CCVT) filter improves
>Distance protection performance without intentional delays or reduced fault coverage
>Superior phase selection algorithm ensures secure high-speed single-pole tripping
>Reliable and secure protection on lines equipped with series compensation
>Large color HMI with metering, event records and control
>Fault and disturbance recording, including internal relay operating signals at up to 128 samples/cycle
>Built-in phasor measurement unit streaming synchrophasors as per IEEE® C7.118
>Increase network availability by reducing failover time to zero through IEC® 62439-3 “PRP” support
>Configurable alarm annunciator eliminates the need for separate annunciator panel
APPLICATIONS
>Overhead lines including series compensated lines and underground cables of various voltage levels
>Single and dual-breaker circuits requiring single/three-pole autoreclosing and independent synchrocheck supervision
>Backup protection for generators, transformers and reactors
>True sub-cycle tripping with CCVT
>Circuits with in-zone power transformers and tapped transformer feeders
>Wide area system monitoring and control using integrated protection and synchrophasor measurement
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