Wrindu Introduces RDVLF-Z80Y 80kV VLF AC Withstand Voltage Tester for Reliable Cable Insulation Testing
Wrindu introduces the RDVLF-Z80Y 80kV VLF AC Withstand Voltage Tester for medium voltage cable insulation testing. Features true sine wave output, variable frequency control, and reliable field performance.
With the increasing demand for reliable power transmission, cable insulation testing has become an important part of preventive maintenance for utilities, contractors, and industrial power systems. To support efficient field testing, Wrindu has introduced the new RDVLF-Z80Y 80kV VLF AC Withstand Voltage Tester, designed for medium voltage cable testing and insulation condition assessment.
The RDVLF-Z80Y applies 0.1Hz Very Low Frequency (VLF) AC testing technology, providing a practical solution for on-site withstand voltage tests where traditional AC testing equipment may be difficult to apply due to size and power requirements.
Click the image to know more about RDVLF-Z80Y VLF Cable Testers.
Why Is VLF AC Withstand Testing Important for Cable Maintenance?
Power cables may experience insulation aging, moisture penetration, electrical stress, and other issues during long-term operation. Without regular testing, these hidden defects may develop into unexpected cable failures.
Compared with traditional power frequency AC testing, VLF testing uses a much lower frequency AC voltage. This reduces the required testing power while maintaining effective insulation stress on cable systems.
VLF AC withstand testing is commonly used for:
- Medium voltage cable acceptance testing
- Preventive maintenance
- Insulation performance evaluation
- Cable condition assessment
It is especially suitable for field testing of long underground cables and distribution networks.
RDVLF-Z80Y Provides 80kV VLF AC Output for Medium Voltage Cable Testing
The RDVLF-Z80Y is designed to meet various cable testing requirements with a maximum 80kV AC peak output voltage.
Its main technical features include:
- AC output voltage: 80kV peak
- Output frequency: 0.1Hz, 0.05Hz, 0.02Hz, and 0.01Hz
- Automatic variable frequency adjustment
- Frequency stability: <0.5%
- Voltage measurement accuracy: ±3%
- Current measurement accuracy: ±3%
The adjustable frequency range allows engineers to select suitable testing conditions according to cable length and capacitance.
How Does True Sine Wave Output Improve Testing Accuracy?
The RDVLF-Z80Y adopts a true sine wave output design to provide stable AC test voltage.
During testing, the instrument can display:
- Real-time voltage waveform
- Current waveform
- Test parameters
The waveform monitoring function helps operators observe testing conditions directly and identify abnormal changes during the process.
The system also uses:
- High-voltage side direct sampling
- Closed-loop negative feedback control
- Automatic output regulation
These technologies help maintain stable output performance during cable testing.
What Safety Features Are Included in the RDVLF-Z80Y?
High-voltage testing requires reliable protection functions to ensure operator safety and equipment stability.
The RDVLF-Z80Y includes several safety designs:
- Optical isolation technology
- Overvoltage protection
- Overcurrent protection
- Built-in protective resistors
- Automatic discharge function
- Emergency protection design
The closed-loop control system helps reduce output fluctuation caused by load changes and improves testing reliability.
Portable Design for Indoor and Outdoor Cable Testing
Field testing often requires equipment that can be transported easily and operated in different environments.
The RDVLF-Z80Y features a rugged portable design with:
- Compact integrated structure
- High-brightness color touchscreen
- Built-in printer
- Test data storage function
- USB communication interface
The tester supports operation from -10°C to +50°C and can be used in both indoor and outdoor testing environments.
What Are the Main Applications of the RDVLF-Z80Y?
The RDVLF-Z80Y VLF AC Withstand Voltage Tester is suitable for various electrical insulation testing applications, including:
- Medium voltage power cables
- Underground cable systems
- XLPE insulated cables
- Power distribution networks
- Electrical equipment insulation testing
With optional DC leakage current measurement, the tester can also provide additional insulation evaluation capability.
The optional DC function supports:
- DC output voltage: up to 80kV
- Leakage current measurement range: 0–2000μA
- Resolution: 1μA
Technical Advantages of RDVLF-Z80Y at a Glance
| Feature | RDVLF-Z80Y Specification |
|---|---|
| AC Output Voltage | 80kV Peak |
| Frequency Range | 0.1Hz / 0.05Hz / 0.02Hz / 0.01Hz |
| Load Capacity | Up to 4.0μF @ 0.01Hz |
| Frequency Stability | <0.5% |
| Voltage Accuracy | ±3% |
| Current Accuracy | ±3% |
| Voltage Resolution | 0.1kV |
| Current Range | 0–20mA |
| Working Temperature | -10°C to +50°C |
| Power Supply | AC 220V ±10% |
| Display | Color Touch LCD |
How Does RDVLF-Z80Y Support Efficient Cable Maintenance?
Reliable cable testing requires accurate measurement, safe operation, and practical field performance.
The RDVLF-Z80Y combines:
- VLF AC withstand testing
- Real-time waveform monitoring
- Automatic frequency adjustment
- Data recording
- Safety protection functions
By integrating these functions into one testing platform, the tester helps engineers perform cable insulation evaluation more efficiently and make better maintenance decisions.
Conclusion
The launch of the RDVLF-Z80Y 80kV VLF AC Withstand Voltage Tester provides a new option for engineers who need reliable field insulation testing equipment.
With 80kV AC output, true sine wave technology, automatic variable frequency control, and portable design, the RDVLF-Z80Y is suitable for medium voltage cable testing applications in utilities, industrial facilities, and power maintenance projects.
Wrindu continues to develop practical high-voltage testing solutions to support safer and more reliable electrical system operation.
