Product Details:

The GE SR745-W2-P1-G1-HI-E-H transformer management relay is a high-performance microprocessor-based protection and monitoring device from GE Multilin 745 series, designed for comprehensive protection of two-winding power transformers in power generation and substation systems. This transformer management relay integrates percentage differential protection, restricted earth fault, overcurrent, thermal overload, overexcitation, over and under voltage, over and under frequency functions. It continuously measures voltage, current and temperature parameters, calculates transformer loss of life and monitors on-load tap changer operating status. As a reliable multilin transformer protection relay, it supports high-speed fault waveform capture and time-stamped event recording, storing fault data for technicians to carry out post-fault analysis. Equipped with backlit LCD display and operation keypad on the front panel, users can quickly check real-time electrical parameters, alarm status and configure protection settings locally. Multiple communication interfaces including Ethernet and serial ports support Modbus and DNP3 protocols for data exchange with SCADA and DCS systems. The relay adopts draw-out hot-swappable structure, which allows technicians to replace the unit without shutting down the whole system, greatly reducing maintenance downtime. The internal circuit board can be coated with conformal coating to resist dust, moisture and mechanical vibration in harsh substation environments. As an essential ge power protection relay, it is widely used in thermal power plants, hydro power stations, industrial power distribution systems and oil & gas power substation projects. When the original relay has protection misoperation, measurement deviation or component aging, this replacement spare part can be installed to restore full transformer protection and monitoring functions, prevent transformer damage caused by electrical faults and guarantee stable operation of power grid. Every relay undergoes complete protection characteristic testing and communication verification before shipment to ensure stable performance.

Specifications:

Brand: GE

Model: SR745-W2-P1-G1-HI-E-H

Product Type: Transformer Management Relay

Series: Multilin 745 Series

Core Protection: Percentage differential, restricted earth fault, overcurrent, thermal overload, overexcitation

Data Recording: Fault waveform capture, event log storage

Communication: Ethernet, serial ports, Modbus, DNP3 protocol

Display: Backlit LCD display and operation keypad

Structure: Draw-out hot-swappable design

Mounting: Panel mounting

PCB Feature: Conformal coated multi-layer PCB

Operating Temperature: -40℃ ~ +70℃

Environmental Feature: Anti-vibration, dust and moisture resistant

Weight: Approx 4.7kg