Schneider Electric PowerLogic™ P3U20 Universal Protection Relay

The Schneider Electric PowerLogic™ P3U20 Universal Protection Relay is a versatile numerical relay designed to protect medium-voltage power distribution systems across a wide range of applications. Suitable for feeders, motors, transformers and generators, the relay combines advanced protection, monitoring, control and communication functions in one compact unit.

Designed for modern electrical networks, the PowerLogic P3U20 provides fast fault detection and dependable protection against electrical abnormalities, helping reduce equipment damage and unnecessary outages. It offers flexible configuration options, making it suitable for both new installations and retrofit projects in industrial plants, commercial facilities and utility substations.

The relay supports modern communication protocols over both serial and Ethernet networks, allowing seamless integration with SCADA, DCS and digital substation automation systems. Its multilingual interface, programmable logic and event recording capabilities simplify commissioning, operation and maintenance while providing operators with valuable system information.

Specifications

• Manufacturer: Schneider Electric
• Product Family: PowerLogic™ P3
• Model: P3U20
• Relay Type: Universal Numerical Protection Relay
• Protection Applications: Feeders, Motors, Transformers and Generators
• Protection Functions: Phase Overcurrent, Earth Fault, Directional Earth Fault, Thermal Overload, Negative Sequence Overcurrent, Undercurrent, Breaker Failure, Auto Reclosing, Lockout Relay, Voltage Protection and Motor Protection Functions
• Communication Protocols: IEC 61850 Edition 1 & Edition 2, Modbus, DNP3 and IEC 60870-5-103
• Communication Interfaces: Serial and Ethernet
• Human Machine Interface: LCD Display with Programmable Function Keys, Push Buttons and LED Indications
• Circuit Breaker Control: Integrated
• Event Recording: Supported
• Fault Recording: Supported
• Disturbance Recording: Supported
• Programmable Logic: Supported
• Relay Management Software: Supported
• Mounting: Flush Panel Mounting

Features

• Universal relay suitable for feeder, motor, transformer and generator protection.
• Complete protection package for medium-voltage power systems.
• Phase and earth fault protection with directional earth fault functionality.
• Thermal overload and negative sequence protection improve equipment safety.
• Built-in breaker failure protection and auto reclosing functions.
• Integrated circuit breaker control with single-line diagram display.
• Supports programmable protection stages and user-defined curves.
• Multilingual HMI with programmable LEDs and function keys.
• Event, disturbance and fault recording for simplified diagnostics.
• Supports IEC 61850 Edition 1 & 2, Modbus, DNP3 and IEC 60870-5-103 communication.
• Easy integration with SCADA, DCS and substation automation systems.
• Simple configuration using Schneider Electric relay management software.

Applications

• Medium-voltage feeder protection
• Motor protection systems
• Distribution transformer protection
• Generator protection
• Utility substations
• Industrial power distribution
• Manufacturing facilities
• Mining and mineral processing plants
• Oil and gas installations
• Water and wastewater treatment plants
• Commercial infrastructure projects

The Schneider Electric PowerLogic™ P3U20 Universal Protection Relay delivers dependable protection, intelligent monitoring and flexible communication for modern medium-voltage power systems. Its broad range of protection functions and user-friendly operation make it an ideal solution for utilities and industries looking to improve the reliability and availability of their electrical networks.