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

GE SR745-W2-P1-G1-HI-A-L-R-E is GE Multilin SR745 two-winding transformer management relay with English firmware version. It features 1A CT secondary input, high impedance control power, and harmonic restrained percentage differential protection to prevent misoperation caused by transformer magnetizing inrush current.

This relay adopts FlexLogic programmable logic, equipped with COMTRADE fault oscillography and sequence of event recording. The suffix E represents English language firmware. Widely used in power, chemical and pulp & paper substation transformer protection maintenance, spare replacement and control system retrofit projects.

Data Parameters

• 1. Brand: GE Multilin (GE Vernova).

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

• 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, E=English firmware.

• 6. Characteristic: FlexLogic custom logic, COMTRADE fault waveform recording.

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

• 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 as main transformer 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, 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-E?
      A: It is GE Multilin SR745 two-winding transformer management relay with 1A CT and English firmware version.

• 2. Q: What does suffix E mean?
      A: The suffix E stands for English language firmware for relay display and interface menus.

• 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.