High Voltage Insulation Equipment
LVLF Hipot Test Set: Advanced 0.1Hz Ultra-Low Frequency Voltage Testing
The LVLF Hipot Test Set revolutionizes insulation testing for high-capacitance equipment like power cables and generators. Utilizing 0.1Hz ultra-low frequency (ULF) technology compliant with DL/T 849.4-2004, it replaces bulky power frequency testers with a portable, intelligent solution.
Product Parameters
Technical parameter
| Power supply | AC220V±5%, 50/60Hz. If using a generator, it must be a digital inverter generator with 220V output and power >8kW. Ordinary generators or UPS power supplies are prohibited. |
| Output Voltage | 30kV, 40kV, 50kV, 60kV, 70kV, 80kV, 80kV, 90kV |
| Output frequency | 0.1Hz, 0.05Hz, 0.02Hz,0.01Hz |
| Load Capacity | 0.1Hz-0.5μF, 0.05Hz-1.0μF,0.02Hz-2.5μF,0.01Hz-5μF |
| Measurement accuracy | 3% |
| Voltage positive,negative peak error | ≤3% |
| Voltage waveform distortion | ≤5% |
| Operating Environment | Temperature: -10℃~+40℃ |
| Humidity | ≤85%RH |
Ultra-low frequency series products
| Model number | Rated voltage | Carrying capacity | Power supply fuse | Generator power | Product structure, weight |
| 30/1.1 | 30kV(peak) | 0.1Hz, ≤1.1μF | 10A | >3kW | Controller: 4kg, booster: 25kg |
| 0.05Hz,≤2.2μF | |||||
| 0.02Hz,≤5.5μF | |||||
| 0.01Hz,≤11μF | |||||
| VLF-40kV | 40kV(peak) | 0.1Hz,≤0.8μF | 15A | >4kW | Controller: 4kg, booster: 25kg |
| 0.05Hz,≤1.6μF | |||||
| 0.02Hz,≤4μF | |||||
| 0.01Hz,≤8μF | |||||
| VLF-50kV | 50kV(peak) | 0.1Hz，≤0.7μF | 20A | >5kW | Controller: 4kg, booster: 35kg |
| 0.05Hz，≤1.4μF | |||||
| 0.02Hz，≤3.5μF | |||||
| 0.01Hz,≤7μF | |||||
| VLF-60kV | 60kV(peak) | 0.1Hz,≤0.6μF | 20A | >6kW | Controller: 4kg, booster: 45kg |
| 0.05Hz,≤1.2μF | |||||
| 0.02Hz,≤3μF | |||||
| 0.01Hz,≤6μF | |||||
| VLF-80kV | 80kV(peak) | 0.1Hz,≤0.5μF | 30A | >8kW | Controller: 4kg, booster: 50kg |
| 0.05Hz,≤1.0μF | |||||
| 0.02Hz,≤2.5μF | |||||
| 0.01Hz,≤5μF | |||||
| VLF-90kV | 90kV(peak) | 0.1Hz,≤0.4μF | 30A | >9kW | Controller: 4kg, booster: 55kg |
| 0.05Hz,≤.0.8μF | |||||
| 0.02Hz,≤2.0μF | |||||
| 0.01Hz,≤4μF |
Comparison of mechanical and electronic performance of 0.1Hz voltage test equipment
| 0.1Hz Voltage resistant device type | High pressure control system | High voltage waveform | Energy saving | noise | Mechanical life | Electrical life |
| Mechanical type | High voltage mechanical switch toggles polarity | Square wave | No energy saving: the excess energy is consumed with high-power resistance | high | short | short |
| Electronic type | High voltage electronic switches switch polarity | Sinusoidal wave | Energy conservation: Excess power is fed back into the grid | slight | There is no | long |
Performance comparison of various pressure test equipment
| Comparative content | Power frequency withstand voltage | Variable frequency voltage resistance | Withstand voltage 0.1Hz | Dc voltage resistance |
| equivalence | good | good | good | In general |
| Insulation destructiveness | small | small | small | larger |
| Operational safety | lower | lower | high | lower |
| Test connection | complex | complex | simple | simple |
| Equipment volume | maximum | larger | small | small |
Why Choose 0.1Hz ULF Technology?
500% Capacity Reduction vs. power frequency tests (per IEC recommendations)
Equivalent Accuracy: Matches 50Hz test results with 90% smaller equipment
Ideal for High-Capacitance Loads: Cables, generators, and transformers
Key Features
| Feature | Advantage |
|---|---|
| 7" Touchscreen Control | Fully automated tests with one-touch operation |
| Closed-Loop Feedback | Eliminates capacitive lift effect (±0.5% stability) |
| Multi-Frequency Selection | 0.01Hz, 0.02Hz, 0.05Hz, and 0.1Hz modes |
| Nanosecond Protection | Overvoltage/overcurrent protection (≤10ms response) |
Applications
XLPE Power Cables: 35kV and below (per DL/T 849.4-2004)
Generators & Motors: Insulation tests without massive resonant transformers
Field Testing: 50% lighter than conventional testers
Technical Specifications
Frequency Range: 0.01Hz–0.1Hz
Voltage Accuracy: ±(1% reading + 1V)
Data Sampling: High-voltage side direct measurement
Safety Standards: IEC 61010, DL/T 849.4-2004
Competitive Advantages
Imported Components: High-speed AD circuits for precise measurements
User-Friendly Design:
Bilingual interface (Chinese/English)
Automatic report generation
Reliability: 30% lower failure rate vs. mechanical boosters
Contact us for OEM services or bulk procurement discounts.
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