Schneider REL52047 Easergy P3U30 Numerical Protection Relay

The Schneider REL52047 Easergy P3U30 Numerical Protection Relay offers a higher I/O capacity for feeder protection applications that require additional monitoring and control points. With 16 digital inputs and 8 digital outputs, the relay gives operators more flexibility when handling breaker status signals, protection interlocks, alarms, and control functions within medium-voltage distribution systems.

This configuration includes four ring lug current inputs and four voltage inputs, allowing the relay to monitor both current and voltage conditions across the feeder. The additional voltage measurement capability helps support protection functions that rely on accurate voltage supervision, phase monitoring, and fault detection.

A wide digital input range of 24 V to 230 V makes integration easier across different substations and industrial installations where control voltages may vary. RS485 communication provides a reliable link to SCADA and automation systems, enabling remote access to measurements, fault records, event logs, and relay status information.

 Specifications

• Manufacturer: Schneider Electric
• Product Series: Easergy P3
• Model: P3U30
• Part Number: REL52047
• Relay Type: Numerical Protection Relay
• Protection Application: Feeder Protection
• Current Inputs: 4L Ring Lug
• Voltage Inputs: 4U
• Digital Inputs: 16 DI
• Digital Outputs: 8 DO
• Auxiliary Supply Voltage (Uaux): 48–230 V AC/DC
• Digital Input Voltage Range: 24–230 V
• Communication Interface: RS485
• Mounting Application: Protection and Control Panels

Features

• Four current inputs and four voltage inputs for comprehensive feeder monitoring.
• 16 digital inputs and 8 digital outputs for advanced control functions.
• Supports digital input voltages from 24 V to 230 V.
• Ring lug terminals for secure current transformer connections.
• RS485 communication for SCADA and automation integration.
• Event logging and fault recording functions.
• Suitable for protection, monitoring, and control applications.
• Compact design for medium-voltage switchgear panels.

Applications

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

The Schneider REL52047 Easergy P3U30 combines feeder protection, voltage supervision, and expanded I/O capability, making it suitable for installations that require greater control and monitoring flexibility.