GE L90A00HCHF8AH6UL6UN6CS6UU6CW2A Relay System

GE L90A00HCHF8AH6UL6UN6CS6UU6CW2A Line Current Differential Relay System

Description:

• The L90 provides high-speed current differential protection suitable for transmission lines and cables of various voltage levels.
• It supports complete distance protection and dual-breaker applications, making it suitable for single and three-pole tripping scenarios.

Features:

• Phase-segregated differential protection: Ensures secure high-speed single-pole tripping.
• High-speed phase and ground distance protection: 5 zones with independent compensation settings and customizable pilot schemes.
• Reliable protection for series-compensated lines: Increased sensitivity through dynamic charging current compensation and communication channel asymmetry compensation.
• Phasor Measurement Unit (PMU): Supports synchrophasor measurement according to IEEE C37.118 (2011) and IEC 61850-90-5.
• Advanced Cybersecurity: Features “CyberSentryTM” to meet modern industry requirements.
• IEC 61850 Certified: Ed. 1 and Ed. 2 implementation with complete settings via SCL files.
• Routable GOOSE (R-GOOSE): For wide area protection and control applications.
• Multiple I/O Options: Includes high-density I/O, programmable logic, and modularity.
• Integrated Display: Large, full-color display for real-time visualization and control.

Applications:

• Overhead lines and underground cables: Suitable for different voltage levels, including series-compensated lines.
• Tapped transformer feeders: Ideal for circuits with tapped transformer feeders.
• Three-terminal line configurations: With channel redundancy and direct transfer tripping (DTT).
• Wide area system monitoring: Integrated protection and synchrophasor measurement for wide area monitoring and control.
• Single and dual-breaker circuits: Requires single/three-pole autoreclosing and independent synchrocheck supervision.
• Capacitively-Coupled Voltage Transformers (CCVTs): Ensures secure application with CCVTs.

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