Schneider Electric PowerLogic™ MiCOM P123 Feeder Protection Relay

Schneider Electric PowerLogic™ MiCOM P123 Feeder Protection Relay supports medium-voltage distribution networks that require dependable protection together with enhanced fault discrimination. In distribution systems where power can flow through multiple paths, identifying the direction of a fault becomes just as important as detecting the fault itself. The MiCOM P123 addresses this requirement through directional protection functions that help improve network selectivity.

The relay monitors feeder currents continuously and reacts to overloads, phase faults, and earth faults before they affect larger sections of the electrical system. Directional protection helps operators isolate the faulted section while keeping healthy parts of the network in service, reducing unnecessary interruptions.

Beyond protection functions, the MiCOM P123 records operational events and fault information that assist with maintenance planning and system analysis. Its compact design allows installation in utility substations, industrial facilities, renewable energy projects, and medium-voltage switchgear applications.

Specifications

• Manufacturer: Schneider Electric
• Product Family: PowerLogic™ MiCOM
• Model: P123
• Relay Type: Numerical Feeder Protection Relay
• Protection Application: Feeder Protection
• Protection Functions: Overcurrent Protection, Earth Fault Protection, Directional Overcurrent Protection and Directional Earth Fault Protection
• Technology: Digital / Numerical Relay
• Event Recording: Yes
• Fault Recording: Yes
• Monitoring Functions: Current Measurement and Fault Analysis
• Installation: Medium Voltage Switchgear and Protection Panels
• Communication: Available depending on configuration

Features

• Overcurrent protection for feeder circuits.
• Earth fault protection for distribution systems.
• Directional overcurrent protection for improved selectivity.
• Directional earth fault protection for accurate fault location.
• Event and fault recording capabilities.
• Continuous feeder monitoring functions.
• Supports protection coordination in interconnected networks.
• Compact design suitable for switchgear installations.

Applications

• Distribution Feeders
• Utility Substations
• Ring Main Networks
• Medium Voltage Switchgear
• Industrial Power Distribution Systems
• Renewable Energy Projects
• Infrastructure Developments
• Electrical Protection Panels

Schneider Electric PowerLogic™ MiCOM P123 Feeder Protection Relay helps improve feeder reliability by combining fault detection, directional protection, and monitoring functions within a compact numerical relay platform.