Schneider REL52022 Easergy P3U Numerical Protection Relay
The Schneider REL52022 Easergy P3U Numerical Protection Relay combines feeder protection, monitoring, and Ethernet communication in a single relay. This configuration brings together 3 ring lug CT inputs, 1 residual current input, 4 voltage inputs, 16 digital inputs, and 8 digital outputs for medium-voltage distribution applications.
Many substations and industrial facilities use 24 V control circuits for signalling and automation. The REL52022 matches these requirements with 24 V digital inputs, allowing direct connection to existing control systems without additional interface equipment.
Dual RJ45 Ethernet ports connect the relay directly to SCADA and automation networks. Operators can access fault records, event logs, measurements, and relay status across the network while maintaining communication with other protection and control devices.
Ring lug CT terminals provide secure field connections and simplify installation during panel upgrades and retrofit projects. The relay monitors feeder conditions continuously and responds to overloads, earth faults, and other abnormal network conditions before they affect downstream equipment.
Specifications
- Manufacturer: Schneider Electric
- Product Series: Easergy P3
- Model: P3U
- Part Number: REL52022
- Relay Type: Numerical Protection Relay
- Protection Application: Feeder Protection
- 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: 24 V
- Communication Ports: 2 × RJ45 Ethernet
- Mounting Application: Protection and Control Panels
Features
- Numerical relay for feeder protection applications.
- 24 V digital inputs for low-voltage control and signalling circuits.
- Dual RJ45 Ethernet ports for communication and network integration.
- Ring lug CT terminals for secure field wiring.
- Residual current monitoring for earth fault detection.
- Supports Ethernet-based SCADA and automation systems.
- Event logging and fault recording capabilities.
- Wide auxiliary supply range for installation flexibility.
Applications
- Feeder Protection
- Distribution Substations
- Industrial Power Distribution Systems
- Renewable Energy Projects
- Solar Power Plants
- Utility Networks
- Protection and Control Panels
- SCADA and Automation Systems
The Schneider REL52022 Easergy P3U is commonly used in applications that require Ethernet communication together with 24 V control circuits, while providing dependable feeder protection and system monitoring.
