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GE SR745-W2-P1-G1-HI-A-L-R Multilin Transformer Relay in stock

GE SR745-W2-P1-G1-HI-A-L-R is GE Multilin SR745 two-winding transformer management relay.
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Products Description

GE SR745-W2-P1-G1-HI-A-L-R Multilin Transformer Relay in stock

GE SR745-W2-P1-G1-HI-A-L-R is GE Multilin SR745 two-winding transformer management relay. It is equipped with 1A CT secondary, high impedance control power, integrated multi-protection functions including percentage differential protection with harmonic restraint to avoid false operation caused by magnetizing inrush.


GE SR745-W2-P1-G1-HI-A-L-R(2).jpeg

This relay adopts multi-processor architecture and FlexLogic programmable logic, supporting fault waveform recording, sequence of event logs and high-precision electrical metering. Widely used in power, chemical and pulp & paper substation transformer protection maintenance, spare replacement and control system retrofit projects.


GE SR745-W2-P1-G1-HI-A-L-R(4).jpeg

GE SR745-W2-P1-G1-HI-A-L-R(6).jpeg

Data Parameters

  • 1. Brand: GE Multilin (GE Vernova).

  • 2. Model: SR745-W2-P1-G1-HI-A-L-R.

  • 3. Product Type: Transformer Management Protection Relay.

  • 4. Application: Two-winding power transformer protection & control, 1A CT.

  • 5. Feature: W2=2 winding, P1=1A CT, HI=high control power supply.

  • 6. Characteristic: FlexLogic custom logic, COMTRADE fault oscillography.

  • 7. Control Power: 90~300VDC /70~265VAC high voltage power.

  • 8. Package: Drawout panel mount protection relay unit.

  • 9. Mounting: Installed inside substation transformer protection cabinet.

  • 10. Operating Temperature: -40℃ ~ +85℃.

Core Functions

  • 1. Dual-slope percentage differential protection with 2nd/5th harmonic restraint for transformer main protection.

  • 2. Phase/ground overcurrent, restricted earth fault, overexcitation, over/under frequency backup protection.

  • 3. Measure voltage, current, active/reactive power, power factor and harmonic components of transformer.

  • 4. Record event sequence logs and COMTRADE fault oscillography for post-fault analysis and troubleshooting.

  • 5. FlexLogic™ custom logic function, Modbus & Ethernet communication for SCADA and DCS system connection.

Application Scenarios

  • 1. Power plant two-winding main transformer protection relay spare replacement.

  • 2. Petrochemical plant substation power transformer protection cabinet maintenance project.

  • 3. Pulp and paper mill factory power distribution transformer automation upgrade.

  • 4. Heavy industry power substation transformer protection spare parts inventory backup.

  • 5. Old multifunction transformer protection relay renewal and retrofit project.

FAQ

  • 1. Q: What is GE SR745-W2-P1-G1-HI-A-L-R?
        A: It is GE Multilin SR745 two-winding transformer management relay with 1A CT input and high control power supply.

  • 2. Q: What is the core protection function?
        A: Dual-slope percentage differential protection with harmonic restraint, preventing mal-operation during transformer magnetizing inrush.

  • 3. Q: Can it be hot swapped?
        A: Disconnect CT, PT secondary circuits and cut off power supply before pulling out the drawout relay; hot swap is not allowed.


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