GE 745-W2-P5-G5-HI-A-E

GE 745-W2-P5-G5-HI-A-E

Product Introduction
The 745-W2-P5-G5-HI-A-E is a highly advanced, multi-processor transformer protection and management relay manufactured by GE Multilin. It is specifically engineered to safeguard and manage two-winding transformers, autotransformers, and reactors, extending equipment life expectancy while optimizing overall system performance.

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Description

GE 745-W2-P5-G5-HI-A-E

Technical Specifications

  • Control Power Range: 90 to 300 VDC; 70 to 265 VAC at 48 to 62 Hz (denoted by “HI”).
  • Display: 40-character Enhanced LCD screen.
  • Software: Compatible with EnerVista 745 setup and monitoring software.
  • RTD Type: Supports 3-wire 100 Ω Platinum, 100 Ω Nickel, and 120 Ω Nickel.
  • Analog Output: Maximum load of 10 kΩ at 0-1 mA, or 600 Ω at 4-20 mA.

Functional Features

  • Features adaptive harmonic restraint and adaptive time overcurrent technologies to seamlessly adapt to system fluctuations.
  • Provides comprehensive protection including dynamic CT ratio mismatch correction, overexcitation protection, and system overload protection.
  • Includes built-in metering capabilities to eliminate the need for extraneous auxiliary metering equipment.
  • Equipped with numeric passcode security to prevent unauthorized setpoint changes.

Application Scenarios
Extensively utilized in power generation plants, industrial substations, and heavy manufacturing facilities for primary or emergency backup transformer protection.

Performance Parameters

  • Operating Temperature: -40°C to +60°C.
  • Overload Withstand: 1 second at 80x rated current, continuous at 3x rated current.
  • Ground Current Input: 5 A.

Material Composition
Housed in a ruggedized industrial enclosure with a precision multi-layer printed circuit board (PCB) and high-reliability microprocessors.

Structural Characteristics
Features an enhanced front-panel display and keypad, alongside multiple rear communication ports including RS232, RS485/RS422, and an optional Ethernet port.

Working Principle
Continuously monitors electrical parameters such as temperature, current demand, frequency, and total harmonic distortion, executing automated protective trips or transmitting data via communication networks when anomalies are detected.

Installation Requirements

  • Mount using standard DIN rail or panel mounting hardware.
  • Connect communication interfaces properly to integrate with the plant’s SCADA or DCS system.

Usage Precautions

  • Ensure the control power voltage strictly matches the “HI” specification to prevent internal damage.
  • Utilize the EnerVista 745 software for efficient configuration rather than relying solely on the front keypad.

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