RDVLF-Z80Y 80kV VLF AC Withstand Voltage Tester for Cable Testing
- Wrindu
- Shanghai, China
- about 10 working days
- 1000 set/month
- RDVLF-Z80Y
The withstand voltage test includes AC and DC methods. Among AC testing technologies, 0.1Hz Very Low Frequency (VLF) testing is an advanced solution recommended by IEC due to its high efficiency and suitability for field applications.
The RDVLF-Z80Y VLF AC Withstand Voltage Tester adopts true sine wave output with automatic frequency adjustment from 0.1Hz to 0.01Hz. It features a color touchscreen for real-time display of voltage and current waveforms, ensuring easy operation and accurate monitoring. With optical isolation, closed-loop control, and multiple protection functions, the tester provides safe and reliable performance.
Product Features
1. AC Withstand voltage testing, Voltage & current curve display.
2. Safe Optical isolation technology.
3. Easiest to use Fully automatic microcontroller.
4. H/L voltage closed loop negative feedback control circuit, output no capacity rise effect.
5. Built-in printer.
6. Built-in protective resistors.
7. Color Touch LCD (154*86mm) operation, True sine wave output.
8. Real-time display of actual output waveform.
9. Ergonomic, menu guided, large color touch screen
10. Storage of test results for later retrieval and print.
11. Over voltage and current protected.
12. Auto variable frequency 0.1Hz, 0.05Hz, 0.02 Hz, 0.01 Hz.
13. 60 mins continuous working;
14. Data of current, voltage and waveform directly sampled at HV side.
15. Portable rugged and reliable trunk design (box material is special mixed resin, made in USA).
16. RS232/USB for buyer’s option (Default configuration of USB interface).
Product Specifications and Technical Parameters
| Parameter | Specification |
|---|---|
| Power Supply | 220V ±10% AC (110V optional), 50/60Hz, single phase |
| AC Output Voltage (Peak) | 80 kV |
| Output Frequency | 0.1Hz, 0.05Hz, 0.02Hz, 0.01Hz (Auto variable frequency) |
| Load Capacity | 0.5μF @ 0.1Hz; 1.0μF @ 0.05Hz; 2.0μF @ 0.02Hz; 4.0μF @ 0.01Hz |
| Frequency Stability | Frequency fluctuation < 0.5% |
| AC Voltage Measurement Accuracy | ±3% |
| AC Voltage Resolution | 0.1kV |
| AC Current Measurement Accuracy | ±3% |
| AC Current Range / Resolution | 0–20mA / 0.1mA |
| Positive & Negative Voltage Peak Error | ≤3% |
| Voltage Waveform Distortion | ≤3% |
| System Configuration | 1 × 40kV integrated unit + 1 × 40kV external booster |
| DC Leakage Current Measurement (Optional) | Available |
| DC Output Voltage | +80kV |
| DC Voltage Accuracy | 3% |
| DC Leakage Current Range | 0–2000μA |
| DC Leakage Current Resolution | 1μA |
| DC Leakage Current Accuracy | 3% |
| Operating Temperature | -10°C to +50°C (Indoor & outdoor use) |
| Operating Humidity | ≤85% RH |
FAQs
Q1: What is the RDVLF-Z80Y VLF AC Withstand Voltage Tester used for?
The RDVLF-Z80Y is designed for AC withstand voltage testing of medium voltage cables and electrical equipment. It is widely used for insulation testing, preventive maintenance, and fault detection in power systems.
Q2: Why is VLF testing better than traditional AC withstand voltage testing?
VLF (Very Low Frequency) testing uses a 0.1Hz low-frequency AC voltage, which reduces the power supply requirements and equipment size while providing effective insulation testing. It is especially suitable for on-site testing of long cables.
Q3: What is the maximum output voltage of the RDVLF-Z80Y tester?
The RDVLF-Z80Y provides an AC peak output voltage of up to 80kV, making it suitable for high-voltage cable withstand tests and electrical equipment insulation evaluation.
Q4: What frequency ranges are supported by the RDVLF-Z80Y?
The tester supports automatic variable frequency output at 0.1Hz, 0.05Hz, 0.02Hz, and 0.01Hz, allowing users to select different test frequencies according to cable capacitance and testing requirements.
Q5: Can the RDVLF-Z80Y display voltage and current waveforms during testing?
Yes. The device is equipped with a color touchscreen that displays voltage and current waveforms in real time, helping operators monitor test conditions and improve testing accuracy.
Q6: What safety features does the VLF AC Hipot Tester have?
The RDVLF-Z80Y includes optical isolation technology, closed-loop control, and overvoltage/overcurrent protection functions to ensure safe and reliable operation during high-voltage testing.
Q7: Can the RDVLF-Z80Y measure DC leakage current?
Yes. An optional DC leakage current measurement function is available. It supports up to 80kV DC output voltage and a leakage current measurement range of 0–2000μA.
Q8: What types of cables can be tested with an 80kV VLF tester?
The RDVLF-Z80Y is suitable for testing medium voltage power cables, including XLPE cables and other insulated cables used in power distribution networks.
Q9: Is the RDVLF-Z80Y suitable for outdoor field testing?
Yes. With a rugged and portable design, the tester can operate in temperatures from -10°C to +50°C, making it suitable for both indoor and outdoor testing environments.
Q10: What are the main advantages of the RDVLF-Z80Y compared with conventional hipot testers?
The RDVLF-Z80Y offers portable design, true sine wave output, accurate measurement, real-time waveform monitoring, automatic frequency adjustment, and reliable protection features, making it an efficient solution for field AC withstand voltage testing.
