GE 745‑W2‑P5‑G5‑HI‑RE Multilin Transformer Protection Relay

745‑W2‑P5‑G5‑HI‑RE is a Multilin 745 series transformer protection relay developed by GE. It integrates protection, measurement and monitoring functions, and provides comprehensive protection for power transformers against over‑current, over‑voltage, differential and other typical electrical faults.

This numerical relay supports multiple communication protocols for data uploading to SCADA and monitoring systems. Equipped with rich I/O terminals and human‑machine display interface, it is widely applied in power substations, power plants and industrial power distribution automation cabinets.

Main Specifications

• Brand: GE Multilin; Model: 745‑W2‑P5‑G5‑HI‑RE; Type: Transformer Protection Relay
• Core Protection: Transformer differential protection, over‑current, over‑voltage, under‑voltage, over‑load protection
• Measurement Function: Voltage, current, power, energy and other electrical parameter acquisition
• Communication Interface: Supports Modbus‑RTU, DNP3 and other industrial communication protocols
• I/O Configuration: Multi‑channel digital input and relay output for interlock and trip control
• Installation: Standard panel‑mount installation for substation control cabinet
• Power Supply: Wide range DC/AC auxiliary power supply
• Operating Environment: ‑20℃ ~ +60℃ working temperature, 5%‑95% RH non‑condensing
• Human‑Machine: Local LCD display, parameter setting and fault event recording
• Certifications: CE, UL, complies with power‑system relay protection industry standards

Core Functions

• Implement complete protection logic for power transformers, trigger trip or alarm when internal and external electrical faults occur.
• Real‑time collect various electrical parameters of transformer, record fault events, fault waveform and historical operation data.
• Realize data interaction with upper‑level SCADA system through communication interface for remote monitoring and remote parameter setting.
• Local LCD panel supports on‑site parameter configuration, status checking and fault query without extra configuration tools.
• Multiple groups of digital input and relay output realize external signal acquisition and protection trip interlock control function.
• Industrial‑grade hardware design adapts to long‑term stable operation in harsh substation electromagnetic interference environment.

Application Scenarios

• Spare‑part replacement for transformer protection cabinets in power substations, thermal power plants and industrial power distribution rooms.
• Main protection device for power transformers in power grid, metallurgy, petrochemical and large‑industrial‑enterprise power supply systems.
• Maintenance backup inventory for renovation and after‑sales maintenance projects of old‑generation transformer protection systems.
• Matching protection relay cooperating with transformer measurement‑transformer, control cabinet and upper‑level monitoring system.
• Retrofit replacement for old protection devices with protection failure, measurement deviation and abnormal communication faults.
• Global aftermarket spare supply for automation maintenance teams maintaining GE Multilin power‑protection equipment worldwide.