Schneider Electric Easergy MiCOM P443 Numerical High Performance Distance Protection Rela

Schneider Electric Easergy MiCOM P443 Numerical High Performance Distance Protection Relay is designed to provide fast, selective and reliable protection for transmission and sub-transmission power networks. It combines advanced distance protection, control, monitoring and communication functions in a single device, making it suitable for high-voltage and extra-high-voltage overhead lines and underground cable systems.

The MiCOM P443 uses proven numerical protection algorithms to detect and isolate faults quickly while maintaining system stability during abnormal operating conditions. It supports advanced functions such as power swing detection, power swing blocking and out-of-step protection, helping prevent unnecessary tripping during network disturbances. Built-in fault location, auto-reclose and check synchronism functions also assist in reducing outage time and improving network reliability.

The relay integrates easily with modern digital substations through IEC 61850 communication and programmable scheme logic. Its flexible configuration, comprehensive event recording and multiple communication options make the MiCOM P443 suitable for both new transmission projects and the modernization of existing protection systems.

Specifications

• Manufacturer: Schneider Electric
• Product Family: Easergy MiCOM
• Model: MiCOM P443
• Relay Type: Numerical High Performance Distance Protection Relay
• Protection Application: Transmission and sub-transmission line protection
• Suitable For: High-voltage and extra-high-voltage overhead lines and underground cables
• Distance Protection: Multi-zone numerical distance protection
• Directional Earth Fault Protection: Supported
• Power Swing Detection: Supported
• Power Swing Blocking: Supported
• Out-of-Step Protection: Supported
• Auto-Reclose: Supported
• Check Synchronism: Supported
• Fault Locator: Integrated
• Programmable Scheme Logic: Supported
• Event Recording: Supported
• Disturbance Recording: Supported
• Communication Interfaces: Serial and Ethernet
• Communication Protocols: IEC 61850, Modbus, DNP3 and IEC 60870-5-103
• Teleprotection: InterMiCOM supported
• Ethernet Redundancy: Supported
• Mounting: Standard modular case

Features

• Numerical relay for high-performance distance protection.
• Multi-zone distance protection for transmission and sub-transmission systems.
• Power swing detection and power swing blocking improve system stability.
• Out-of-step protection for interconnected power networks.
• Integrated fault locator speeds up fault identification and restoration.
• Auto-reclose and check synchronism functions reduce outage time.
• Programmable scheme logic allows customised protection schemes.
• Supports IEC 61850 communication for digital substations.
• InterMiCOM teleprotection enables secure communication between relays.
• Comprehensive event and disturbance recording supports fault analysis.

Applications

• Transmission line protection
• Sub-transmission line protection
• High-voltage substations
• Extra-high-voltage transmission systems
• Overhead transmission lines
• Underground cable protection
• Utility power networks
• Digital substations

Schneider Electric Easergy MiCOM P443 Numerical High Performance Distance Protection Relay combines fast fault clearance, advanced power system protection and modern communication features, making it suitable for critical transmission networks where reliability and system stability are essential.