Portable Ultra-Low Frequency Dielectric Loss Tester

II. Performance Breakthroughs and Equivalence Advantages
Ultra-Low Capacity Requirements
Through 0.1Hz ultra-low frequency output, the power supply capacity requirement is reduced to 1/500th of that at power frequency, significantly decreasing equipment size and weight (typical units weigh only 45kg) for convenient outdoor mobile operations.
High-Voltage Output Capability
Peak voltage reaches 90kV, supporting multi-frequency selection at 0.1Hz/0.05Hz/0.02Hz. Load capacity spans the 50nF to 5μF capacitance range, accommodating large test specimens such as power cables, capacitors, and generators.
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III. Safety and Reliability Enhancements
Triple Protection Mechanism
Overvoltage Protection
: Shuts down within 20ms when exceeding the set value by 10%.
Overcurrent Protection
: Dual protection on high and low voltage sides; triggers immediately upon low-side current exceeding limits.
Capacitive Rise Suppression
: Closed-loop negative feedback circuits on both sides eliminate capacitive rise effects, ensuring output stability.

IV. Intelligent Operation and Data Analysis

Human-Machine Interface
7-inch touchscreen display supports real-time waveform visualization and test report printing.
Data Management and Transfer
USB interface enables exporting test data to PCs for historical comparison.

V. Environmental Adaptability and Standard Compliance
Wide Temperature and Humidity Range
Operates in -10°C to +40°C environments with ≤85% RH humidity, meeting demanding indoor/outdoor conditions.

VI. Application Scenario Expansion
Multi-Domain Adaptability
Suitable for insulation withstand voltage testing of 6kV–35kV cables, power capacitors, and large/medium generators/motors. Supports integrated AC withstand voltage and dielectric loss testing.
Non-Destructive Testing Advantages
Compared to DC withstand voltage, ultra-low-frequency AC output avoids residual charge issues and causes minimal insulation damage. Particularly effective for detecting end-section defects in semiconductor anti-corona layer equipment.