Schneider REL52040 Easergy P3U20 Protection Relay Unit

Feature & Principle

It samples current and voltage signals from CT and VT, executes overcurrent, earth fault, negative sequence and undercurrent protection functions. It supports fault recording, event logging and multiple communication protocols for remote monitoring, setting and interlocking with SCADA system.

Specifications

Model: REL52040 Brand: Schneider Electric Type: P3U20-6AAA2ADAA Power supply: 48~230V AC/DC DI: 10 channels DO: 6 channels Communication: IEC61850, Modbus TCP, DNP3, IEC101 Mounting: Panel cutout mounting Certification: IEC, CE, UL

Components & Diagnostics

Main processing board, signal acquisition board, LCD display, operation keypad, communication module and terminal block. Common faults: CT wiring error, communication interruption, setting mismatch, power supply failure, no fault record.

Product Brief

REL52040 protection relay, Schneider power automation spare widely used for substation feeder, transformer and motor protection.