Schneider REL52016 Easergy P3U Numerical Protection Relay

The Schneider REL52016 Easergy P3U Numerical Protection Relay is a numerical protection relay designed for feeder protection and monitoring in medium-voltage power distribution systems. It combines protection, measurement, control, and communication functions in a single unit, making it suitable for substations, industrial plants, utility networks, and infrastructure projects.

This relay is equipped with three ring lug current transformer inputs, one residual current input, and four voltage transformer inputs for monitoring key electrical parameters and fault conditions. It helps identify issues such as overloads, earth faults, phase faults, and voltage disturbances, supporting reliable operation of electrical networks.

With 16 digital inputs and 8 digital outputs, the relay can be integrated into a wide range of protection and automation schemes. The RS485 communication interface enables connection to SCADA and remote monitoring systems for data collection, event recording, and operational control.

Specifications

• Manufacturer: Schneider Electric
• Product Series: Easergy P3
• Model: P3U
• Part Number: REL52016
• Relay Type: Numerical Protection Relay
• Current Inputs: 3 CT Ring Lug
• Residual Current Input: 1 Io
• Voltage Inputs: 4 VT
• Digital Inputs: 16 DI
• Digital Outputs: 8 DO
• Auxiliary Supply Voltage: 48–230 V AC/DC
• Digital Input Voltage: 110 V
• Communication Interface: RS485
• Mounting Application: Protection and Control Panels
• Suitable for: Medium Voltage Distribution Systems

Features

• Numerical relay for feeder and distribution protection.
• Three ring lug current transformer inputs for current measurement.
• Residual current monitoring for earth fault detection.
• Four voltage inputs for system monitoring and protection functions.
• 16 digital inputs and 8 digital outputs for control and signalling.
• RS485 communication for SCADA and automation system integration.
• Event logging and fault recording capabilities.
• Wide auxiliary supply range for flexible installation.

Applications

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

The Schneider REL52016 Easergy P3U relay is commonly used in power distribution applications where dependable protection, monitoring, and communication functions are required to maintain network reliability and system safety.