Product Description

Overview

The ABB G4AC (HENF209544R1) is a high-performance DSP-based RF-Converter Control Board built for the ABB ETL600 Digital Power Line Carrier System (Release 1.0). It serves as the communication engine for high-voltage utility networks, converting low-frequency (LF) signals into radio-frequency (RF) signals for secure and reliable data transmission over power lines.

The module integrates a DPLC modem (MOD600), a Digital Signal Processor (DSP), and a Human-Machine Interface (HMI), offering streamlined configuration, real-time monitoring, and diagnostics in one compact unit. Compared to the G4AA, the G4AC includes enhanced signal processing and filtering, optimized for high-density or interference-heavy environments.

Technical Specifications

Key Features

Advanced Digital Signal Processing
The onboard DSP filters noise and electrical interference, ensuring that critical protection and trip signals are delivered accurately even on 400kV+ lines.

Integrated Communication Suite
Combines voice, low-speed RS-232 data, and high-speed Ethernet traffic on a single carrier frequency, simplifying cabinet wiring and reducing equipment footprint.

Fault Detection & Diagnostics
LED indicators and alarm outputs provide immediate status feedback for both module-level and system-level issues, allowing rapid troubleshooting.

High-Voltage and EMC Protection
Designed to withstand lightning strikes, switching surges, and extreme electrical noise while maintaining operational integrity in high-voltage substations.

Compatibility & Upgrade Path
Fits standard 19-inch ETL600 racks and maintains backward compatibility with earlier ETL modules, allowing incremental upgrades for utility networks.

Comparison with G4AA
The G4AC uses updated processing chips and optimized filtering to support higher-density data transmission, making it preferable for regions or applications requiring enhanced frequency handling or interference resilience.

Applications

• High-voltage power line monitoring and protection

• Utility network communication

• Substation automation and telemetry

• ETL600 system upgrades and retrofits

FAQ

Q: Can the G4AC HENF209544R1 module handle high-voltage line interference?
A: Yes, the advanced DSP and filtering algorithms isolate valid signals from corona noise and high-voltage electrical interference.

Q: Does this module support voice and data simultaneously?
A: Yes, it can multiplex voice, low-speed serial data, and high-speed Ethernet traffic over the same carrier.

Q: Is the board backward compatible with previous ETL series?
A: Yes, through specific configuration modes, allowing gradual network upgrades.