ABB UFC765AE102 3BHE003604R0102 Earth Fault Monitor (EAF) Board

Description

Technical Specifications

• Product Type: Earth Fault Monitor (EAF) / Ground Fault Relay (GFR) Board
• Fault Detection: Two‑stage ground fault detection (low‑set and high‑set stages)
  • Low‑set stage: Detects small, incipient ground faults
  • High‑set stage: Detects large, severe ground faults
• Sensitivity Range: Configurable fault current thresholds (0.1 A – 10 A)
• Response Time: ≤ 5 ms for high‑set faults; ≤ 20 ms for low‑set faults
• Isolation: Galvanic isolation between monitoring circuits and control systems (2500 V AC)
• Output Interfaces:
  • 2 relay output channels (NO/NC, 250 V AC / 30 V DC, 5 A) for trip signals
  • 1 analog output (4–20 mA) for continuous fault current monitoring
  • Digital status outputs for fault indication and system health
• Communication: Compatible with ABB Masterbus 300 and System 800xA communication protocols
• Power Supply: 24 V DC (18 V – 32 V DC)
• Operating Temperature: -25°C to +70°C
• Storage Temperature: -40°C to +85°C
• Humidity: 5% – 95% non‑condensing
• Vibration Resistance: 5 g (10–2000 Hz)
• Protection Rating: IP20 (panel‑mounted)
• Dimensions: 160 mm × 115 mm × 85 mm (W × H × D)
• Weight: Approx. 0.5 kg
• Certifications: CE, UL, CSA, IEC compliant

Key Features

• Dual‑Stage Fault Detection: Implements low‑set and high‑set detection stages to identify both minor and major ground faults, enabling targeted protective actions.
• Ultra‑Fast Response: Delivers sub‑20 ms response times to quickly isolate faults and minimize equipment damage and safety risks.
• High‑Precision Sensing: Uses advanced current‑transformer technology for accurate fault current measurement and reliable detection across a wide sensitivity range.
• Galvanic Isolation: Provides 2500 V AC isolation to protect control systems from high‑voltage transients and electrical noise in industrial environments.
• Flexible Configuration: Supports user‑configurable fault thresholds and response parameters via software or DIP switches for adaptability to different system requirements.
• Comprehensive Outputs: Offers relay trip outputs, analog monitoring signals, and digital status indicators for seamless integration with control and alarm systems.
• Robust Industrial Design: Constructed to withstand extreme temperatures, humidity, and vibration, ensuring continuous operation in harsh industrial settings.
• Hot‑Swappable Design: Allows for module replacement without system shutdown, reducing maintenance downtime and enhancing system availability.
• Built‑In Diagnostics: Features self‑monitoring and fault indication via LED indicators, providing real‑time status updates for quick troubleshooting.
• System Compatibility: Designed for direct integration with ABB Advant Master, System 800xA, and high‑power drive platforms, ensuring full interoperability.
• Safety Compliance: Meets international safety standards for industrial electrical protection, ensuring safe operation in critical power applications.

Application Scenarios

• High‑Voltage Drives: Integrated into ABB ACS6000, ACS800, and other high‑power variable frequency drives for ground fault protection in motor control systems.
• Power Distribution Systems: Deployed in medium‑voltage switchgear, distribution panels, and power substations to monitor and protect against ground faults.
• Industrial Process Control: Used in chemical, petrochemical, and manufacturing plants to safeguard critical power systems and process equipment.
• Renewable Energy: Applied in wind turbine converters, solar inverter systems, and energy storage systems for ground fault monitoring and protection.
• Marine & Offshore: Installed on ships, offshore platforms, and marine electrical systems to ensure safe operation in harsh marine environments.
• Mining & Metallurgy: Protects heavy industrial equipment and power systems in mining operations, smelters, and metal processing facilities.
• Water & Wastewater: Safeguards pump stations, treatment plants, and distribution networks from ground faults in industrial water systems.
• Oil & Gas: Used in refineries, pipelines, and offshore drilling systems to protect critical power infrastructure and prevent hazardous electrical faults.
• General Industrial Power Systems: Serves as a universal ground fault protection solution for a wide range of industrial power distribution and control applications.