The PDF-3000B DC System Ground Fault Tester is an advanced diagnostic tool designed to address grounding faults in DC power systems across substations, power plants, and industrial facilities. Combining portability with online monitoring-grade performance, the device integrates phase lead processing technology and data transfer algorithms to deliver high sensitivity, anti-interference capability, and operational safety. It enables non-invasive fault detection and precise localization without disconnecting power sources, making it indispensable for maintaining grid reliability.
Key Features
1.Dual-Mode Operation
Analyzer: Directly powered by the DC bus (30–280V range), eliminating external AC/battery dependencies.
Locator: Battery-powered (12V Li-ion) for field portability.
2.Comprehensive Fault Detection
Detects and locates all grounding types:
High-resistance, virtual, direct, or capacitive grounding.
AC interference (0–280V), diode-isolated circuits, and mixed AC/DC faults.
Battery bank grounding and busbar capacitance (1–200μF).
3.Intelligent Signal Processing
Directional Leakage Current Analysis: Measures phase and amplitude (0–100mA range, ±0.1mA resolution) to identify fault direction.
Ripple Analysis & Digital Oscilloscope: Filters noise via spectral analysis and visualizes waveforms.
4.Safety & Compatibility
Low output power (<0.15W) with current-limiting protection to avoid disrupting relays or control circuits
Compatible with DC systems up to 300V.
5.User-Centric Design
Auto-sensing current clamps (supports multiple sizes).
Voice-guided alerts and graphical localization.
Rugged, lightweight (1kg per unit) with IP-rated housing (-10°C to 50°C operation).
Technical Specifications
Transmitter
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Parameter
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Specification
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Voltage Range
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0–300V (±1% accuracy)
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Bus Resistance Range
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0–999.9kΩ (±10% ±2kΩ)
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Capacitance Range
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1–200μF (±15% ±2μF)
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AC Interference Detection
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0–280V (±1%)
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Signal Frequency
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0.5Hz, 0–10mA output
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Power Consumption
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<10W
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Dimensions
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163×215×66mm
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Analyzer
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Parameter
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Specification
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Ground Resistance Range
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0–300kΩ (0–100kΩ: ±10% ±2kΩ)
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Leakage Current Range
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0–100mA (0.1mA resolution)
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Power Source
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12V Li-ion (3100mAh, 9.6–12.6V)
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Operating Temperature
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-10°C to 50°C
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Applications
1.Rapid Fault Localization: Identifies faults in ring-topology networks, multi-branch systems, and interconnected DC circuits.
Preventive Maintenance: Measures busbar insulation resistance and capacitance to predict degradation.
2.Troubleshooting: Resolves AC/DC cross-interference, battery grounding, and polarity reversal issues.
The PDF-3000B redefines efficiency in DC system maintenance by merging laboratory-grade accuracy with field practicality. Its ability to diagnose complex grounding scenarios—without line disconnection or insulation testing—reduces downtime and enhances safety. For engineers seeking a reliable, all-in-one solution for DC fault management, the PDF-3000B sets a new benchmark in precision and adaptability.
GDZX is a manufacturer of power testing equipment, offering a wide range of product categories with comprehensive models and providing professional technical support. Contact: +86-17396104357.Website: https://www.highvoltage-testequipment.com/
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