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VLF SMT-30kV AC/DC
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The VLF-30kV SMT AC/DC Very Low Frequency Tester is a compact insulation withstand voltage test system designed for testing medium-voltage cables and electrical equipment.
Using 0.1Hz very low frequency testing technology, the system provides a reliable alternative to traditional power frequency testing while significantly reducing equipment size and power requirements. The SMT series integrates advanced protection features, accurate high-voltage sampling, and optional Tan-Delta diagnostics for improved cable condition analysis.
Key Features
• Very low frequency 0.1Hz cable testing technology
• Intelligent over-voltage and over-current protection
• Automatic protection calculation based on cable capacitance
• High-voltage side sampling for improved accuracy
• Closed-loop negative feedback control system
• 150kV high-voltage output line for safe operation
• Optional Tan-Delta dielectric loss testing
• Compact integrated controller design
• Automatic frequency conversion 0.1Hz – 0.01Hz
Applications
• Medium voltage cable insulation testing
• Electrical commissioning tests
• Power utility maintenance
• Motor insulation testing
• Industrial electrical system diagnostics
Technical Specifications
Rated Output Voltage
30kV (peak)
Output Frequency
0.1Hz – 0.01Hz automatic conversion
Load Capacity
≤10 µF
Voltage Resolution
0.1 kV
Voltage Accuracy
3%
AC Current Resolution
0.1 mA
AC Current Accuracy
3%
Voltage Waveform Distortion
3%
Operating Conditions
Temperature
-10°C to +40°C
Humidity
≤85% RH
Weight
Controller approx. 45 kg
Application Range
Cable and motor testing up to 10kV