Core Features
Full dimensional transformer protection: covering differential protection, overcurrent/ground fault, overvoltage/undervoltage, overexcitation/underexcitation, frequency abnormality, inrush current lockout, overload protection, etc. The microprocessor drives fast action (about 10ms) to ensure the safety of the transformer.
Flexible Programming and Extension: FlexLogic ™ Technical support for custom protection logic, adapted to transformers of different wiring groups; Six programmable relays can be associated with control circuits such as tripping and alarm, and analog output is connected to DCS/PLC.
Enhanced human-computer interaction: 40 character LCD large screen+LED indicator lights+numeric keypad, supporting local parameter settings, fault diagnosis, and event record tracing, with a pull-out structure for easy maintenance and replacement.
Accurate state monitoring: Real time collection of parameters such as current, voltage, power, frequency, temperature, etc., supporting waveform recording, trend analysis, and pre fault data tracing for easy maintenance and analysis.
Adaptation to harsh working conditions: H-shaped coating design, suitable for harsh industrial environments such as high humidity and mild corrosion, to enhance equipment reliability.
Application scenarios
Main or backup protection for power/distribution transformers in power systems, industrial power grids, renewable energy, etc.
Transformers in industries such as chemical, metallurgical, and mining are used for comprehensive protection of transformer windings, iron cores, and electrical circuits.
Systems with high reliability requirements for transformers in harsh industrial environments require conformal coatings.

GE SR745-W2-P1-G1-HI-E-H｜Transformer Protection Relay｜