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L90—Line Current Differential System

 
         

KEY BENEFITS

>Phase segregated differential protection ensures secure highspeed single-pole tripping

>High-speed cost-effective five zones quad or mho, phase and ground distance protection with multiple standard and customizable pilot schemes support

>Reliable and secure protection on lines equipped with series compensation

>In-zone power transformer enables savings on CTs and protection device requirements

>Increased sensitivity through dynamic charging current compensation and communication channel asymmetry compensation

APPLICATIONS

>Overhead lines including series compensated lines and underground cables of different voltage levels

>Circuits with tapped transformer feeders
>Suitable for three-terminal line configurations, with channel redundancy and direct transfer tripping (DTT)

>Wide area system monitoring and control, using integrated protection and synchrophasor measurement

>Single and dual-breaker circuits requiring single/three-pole autoreclosing and independent synchrocheck supervision

>Secure application with Capacitively-Coupled Voltage Transformers (CCVTs)
 

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