Schneider REL52002 Easergy P3U Protection Relay

The Schneider REL52002 Easergy P3U Protection Relay is a numerical protection relay designed for feeder and distribution network protection in medium-voltage electrical systems. It combines protection, monitoring, control, and communication functions in a single unit, helping operators monitor network conditions and respond quickly to electrical faults.

This relay is equipped with 3 current transformer inputs, 1 residual current input, and 4 voltage transformer inputs for measuring and monitoring key electrical parameters. With 16 digital inputs and 8 digital outputs, it can be integrated into various protection and automation schemes used in substations, industrial plants, and power distribution networks.

The relay supports RS485 communication for connection to SCADA and remote monitoring systems. Its wide auxiliary supply range of 48–230 V AC/DC allows installation in a variety of switchgear and control panel applications.

Specifications

• Manufacturer: Schneider Electric
• Product Series: Easergy P3
• Model: P3U
• Part Number: REL52002
• Relay Type: Numerical Protection Relay
• Auxiliary Supply Voltage: 48–230 V AC/DC
• Current Inputs: 3 CT (3CT)
• Residual Current Input: 1 Io
• Voltage Inputs: 4 VT (4VT)
• Digital Inputs: 16 DI
• Digital Outputs: 8 DO
• Digital Input Voltage: DI220
• Communication Interface: RS485
• Suitable for: Medium Voltage Distribution Systems

Features

• Numerical protection relay for feeder applications.
• Monitors current, voltage, and residual current values.
• Supports protection against overload, earth fault, and abnormal network conditions.
• 16 digital inputs and 8 digital outputs for control and signalling functions.
• RS485 communication for SCADA and automation system integration.
• Event and fault recording for system diagnostics.
• Compact design suitable for switchgear and protection panels.
• Wide auxiliary supply range for installation flexibility.

Applications

• Feeder Protection
• Distribution Substations
• Medium Voltage Switchgear
• Industrial Power Distribution Systems
• Utility Power Networks
• Infrastructure Projects
• Electrical Control and Protection Panels
• SCADA Integrated Power Systems

The Easergy P3U REL52002 is commonly used in applications where dependable feeder protection, fault monitoring, and communication capabilities are required for safe and reliable operation of electrical distribution systems.