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GE SR745-W2-P5-G5-HI Transformer Protection Relay
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GE SR489-P5-HI-A20-E Generator Management Relay
GE SR489-P5-HI-A20-E Generator Management Relay
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GE SR750-P1-G1-S1-HI-A20-R-E-H Multilin Feeder Management Relay
GE SR750-P1-G1-S1-HI-A20-R-E-H Multilin Feeder Management Relay

GE SR745-W2-P5-G5-HI Transformer Protection Relay

Product Introduction

The GE SR745-W2-P5-G5-HI is a transformer protection relay designed to provide comprehensive protection and management for transformers. It belongs to GE’s Multilin 745 series, which is known for its high-speed operation and reliability. This relay is capable of managing both dual and triple-winding transformers, ensuring their safe operation under various conditions.

Technical Specifications

  • Control Power Supply: 90 to 300 V DC or 70 to 265 V AC, 48 to 62 Hz
  • Operating Temperature: -40°C to +60°C (-40°F to +140°F)
  • Storage Temperature: -40°C to +80°C (-40°F to +176°F)
Category:
Description
  • Relative Humidity: Up to 90% non-condensing
  • Frequency: Nominal 50 or 60 Hz
  • Phase CT Secondary: 5 A
  • Analog Output: 4-20 mA
  • Display: Enhanced large LCD display for improved visibility
  • Communication Interface: Supports multiple communication protocols such as RS-232, RS-485, and Ethernet (depending on configuration)
  • Software: EnerVista 745 for configuration and monitoring

Functional Characteristics

  • Comprehensive Protection Functions:
    • Overload Protection: Prevents damage due to excessive load.
    • Short Circuit Protection: Rapidly isolates faults to protect the transformer.
    • Overcurrent Protection: Monitors and responds to abnormal current levels.
    • Thermal Overload Protection: Predicts and prevents overheating based on thermal models.
    • Differential Protection: Provides phase and ground differential protection to detect internal faults.
    • Harmonic Monitoring: Monitors single harmonics and Total Harmonic Distortion (THD).
  • Advanced Monitoring and Diagnostics:
    • Real-Time Monitoring: Continuously monitors transformer parameters such as voltage, current, and temperature.
    • Event Logging: Records operating events for post-fault analysis and troubleshooting.
    • Waveform Capture: Captures waveforms for detailed analysis of fault conditions.
  • User-Friendly Interface and Configuration:
    • Enhanced LCD Display: Provides clear visibility of operating parameters and diagnostic messages.
    • Intuitive Front Panel: Features a digital keyboard and dedicated control keys for easy local configuration and monitoring.
    • Programmable Settings: Allows users to customize protection parameters and logic according to specific application requirements.
  • High Reliability and Durability:
    • Robust Construction: Built to withstand harsh industrial environments and ensure long-term reliable operation.
    • High-Quality Components: Uses premium materials and advanced manufacturing processes for enhanced durability.
  • Communication and Integration:
    • Multiple Communication Protocols: Supports various protocols for seamless integration into automation systems.
    • Remote Monitoring and Control: Enables remote monitoring and control via communication ports.

Application Scenarios

The GE SR745-W2-P5-G5-HI transformer protection relay is widely used in various industrial sectors where transformer protection is essential, including:

  • Power Generation: Protects transformers in power plants, ensuring reliable operation of generation equipment.
  • Utilities: Safeguards transformers in substations and distribution networks.
  • Oil and Gas: Protects transformers in upstream, midstream, and downstream operations, preventing costly downtime and repairs.
  • Chemical Processing: Monitors and protects transformers in chemical plants, where process reliability and safety are paramount.
  • Water Treatment: Ensures the continuous operation of transformers in water treatment facilities, maintaining water quality and supply.
  • Manufacturing: Protects transformers in manufacturing plants, optimizing production efficiency and reducing maintenance costs.
  • Industrial Automation: Integrates seamlessly into industrial automation systems, providing comprehensive transformer protection and control.
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