Schneider REL52008 Easergy P3U30 Protection Relay

The Schneider REL52008 Easergy P3U30 Protection Relay is a numerical protection relay developed for medium-voltage feeder and distribution network applications. It provides protection, measurement, monitoring, and control functions in a compact unit, helping operators maintain the reliability and safety of electrical systems.

The relay is equipped with four current inputs using ring lug connections and four voltage inputs for continuous monitoring of network conditions. It supports a range of protection functions commonly required in substations, industrial facilities, utility networks, and infrastructure projects. With 16 digital inputs and 8 digital outputs, the relay can be easily integrated into protection and automation schemes.

For communication and system integration, the relay features two RJ45 Ethernet ports, allowing connection to SCADA, substation automation, and remote monitoring systems. The wide auxiliary supply range of 48–230 V AC/DC makes it suitable for various installation environments.

Specifications

• Manufacturer: Schneider Electric
• Product Series: Easergy P3
• Model: P3U30
• Part Number: REL52008
• Relay Type: Numerical Protection Relay
• 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: 110–230 V AC
• Communication Ports: 2 × RJ45 Ethernet

Features

• Numerical relay for medium-voltage protection applications.
• Four current inputs and four voltage inputs for system monitoring.
• 16 digital inputs and 8 digital outputs for control and signalling functions.
• Dual RJ45 Ethernet ports for communication and network integration.
• Supports remote monitoring through SCADA and automation systems.
• Event and fault recording for analysis and troubleshooting.
• Suitable for feeder, transformer, and distribution protection schemes.
• Wide auxiliary supply range for installation flexibility.

Applications

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

The Schneider REL52008 Easergy P3U30 relay is commonly used where reliable protection, operational monitoring, and communication capabilities are required for medium-voltage electrical distribution networks.