489-P5-HI-A20-E-H

The 489-P5-HI-A20-E-H is a specialized protection relay designed by GE Multilin for demanding industrial environments, combining an enhanced display, harsh environmental coating, and 5A phase CT secondaries. Below is a breakdown of its technical parameters and key features:

1. Core Technical Parameters

• Phase Current Transformers (CTs):
  • Secondary Current Rating: 5A (standard for most protection relays, ensuring compatibility with common CT ratios).
  • Accuracy & Burden: Likely meets IEC/IEEE standards for protection-class CTs (e.g., Class 5P or 10P accuracy).
• Voltage Inputs:
  • Control Power: 90–300 VDC and 70–265 VAC (48–62 Hz), enabling flexible power supply options.
  • Voltage Transformers (VTs): Built-in monitoring for VT fuse failure, ensuring reliable voltage sensing.
• Analog Output:
  • 4–20 mA Signal: Standard for transmitting process variables (e.g., current, voltage) to SCADA or PLC systems.
• Environmental Rating:
  • Harsh Environmental Coating: Protects against corrosion, moisture, dust, and extreme temperatures (e.g., NEMA 4X/IP66 or higher).
  • Operating Temperature Range: Typically -40°C to +70°C (extended range for harsh environments).

2. Protection & Monitoring Functions

• Trip & Alarm Protection:
  • Configurable protection logic for overcurrent, underfrequency, overvoltage, etc.
  • Multiple trip stages (e.g., instantaneous, time-delayed) with adjustable settings.
• Breaker Failure Detection:
  • Monitors circuit breaker status to detect failed trips and initiate backup protection.
• Metering & Monitoring:
  • Real-time measurement of RMS current, voltage, power, and energy.
  • Event logging and fault recording for post-mortem analysis.
• Flash Memory & Data Storage:
  • Non-volatile memory for storing configuration, settings, and event logs.
• Trip Coil Monitoring:
  • Verifies proper operation of trip coils to prevent misoperation.

3. Display & User Interface

• Enhanced LCD Display:
  • Larger screen compared to the base 489-P5-HI-A20 model, improving readability and navigation.
  • Multi-language support, status indicators, and configurable menus.
• Front-Panel Controls:
  • Buttons for local configuration, testing, and resetting alarms.

4. Communication & Integration

• Modbus/DNP3 Protocols:
  • Enables remote monitoring and control via SCADA/HMI systems.
• Enervista 489PC Software:
  • PC-based tool for configuration, firmware updates, and real-time data visualization.

5. Mechanical & Electrical Specifications

• Enclosure:
  • Draw-out design (SR489-CASE) for easy maintenance and replacement.
  • Ruggedized construction for shock/vibration resistance (e.g., MIL-STD-810 compliance).
• Power Consumption:
  • Low power operation (e.g., <10 W at full load) for energy efficiency.
• Insulation & Dielectric Strength:
  • High voltage withstand (e.g., 2.5 kV AC for 1 minute) between terminals and ground.

6. Certifications & Compliance

• Approvals:
  • UL, CE, IEC 61850, IEEE C37.90 (for protection relays).
  • Compliance with marine/offshore standards (e.g., DNV GL, ABS) if used in those sectors.

Applications

• Industries:
  • Oil & gas, mining, renewable energy (wind/solar farms), marine, and utilities.
• Use Cases:
  • Generator protection, motor control centers (MCCs), substation automation, and critical infrastructure.

Summary

The 489-P5-HI-A20-E-H stands out as a ruggedized, feature-rich protection relay with:
✅ 5A phase CT secondaries for accurate current sensing.
✅ Harsh environmental coating for reliability in extreme conditions.
✅ Advanced protection, metering, and communication capabilities.
✅ Enhanced display for easier operation.

This model is ideal for applications where reliability, durability, and precise control are critical. For exact specifications, refer to GE Multilin’s official datasheet or contact their technical support.