PRODUCT FEATURES
1. AC withstand voltage testing with synchronous real-time display of voltage and current curve.
2. Integrated tan delta (tgδ) and capacitance (μF) testing, no external auxiliary devices needed
3. Built-in partial discharge testing function, eliminating the need for extra external equipment
4. DC withstand voltage testing combined with real-time DC leakage current measurement
5. Tan delta test result analysis fully compliant with the IEEE 400.2 standard
6. Advanced optical isolation technology for safe isolation of high and low voltage circuits
7. Core-driven by a fully automatic microcontroller with ultra-simplified one-touch operation logic
8. High/low voltage closed-loop negative feedback control, effectively eliminating output capacitance rise effect
9. Equipped with a built-in high-speed printer for on-site instant printing of test reports
10. Integrated protective resistors that effectively limit short-circuit and overcurrent during testing
11. 154*86mm color touch LCD screen with standard true sine wave output performance
12. Real-time dynamic display of the actual output waveforms of test voltage and current
13. Ergonomically designed large color touch screen with intuitive menu-guided step-by-step operation
14. Large-capacity memory for test result storage, supporting flexible data retrieval and printing
15. Intelligent dual protection against over-voltage and over-current with automatic power-off and alarm functions
16. Automatic variable frequency output (0.01Hz/0.02Hz/0.05Hz/0.1Hz) for adaptive use in multiple scenarios
17. Optimized heat dissipation system enabling 60 minutes of stable full-load continuous operation
18. Direct sampling of current, voltage and waveforms at the HV side to ensure authentic and accurate data
19. Portable and rugged trunk-style design with an outer case made of US-manufactured special mixed resin
20. Core technologies certified with national invention patents for exclusive technical advantages
21. Compliant with EU CE certification, adhering to international quality and safety standards
22. Optional RS232/USB communication interfaces, supporting data interaction with PC terminals
FAQs
Q1: What testing functions does this VLF hipot tester integrate, and do I need extra external devices for use?
A: This tester integrates AC withstand voltage, DC withstand voltage, tan delta (tgδ), capacitance, partial discharge (PD) and DC leakage current testing functions. All core tests can be completed without any external auxiliary devices, realizing one-machine multi-test for on-site efficiency.
Q2: What frequency ranges does the tester support, and is the frequency adjustment automatic?
A: It supports automatic variable frequency output at 0.01Hz, 0.02Hz, 0.05Hz and 0.1Hz, adapting to insulation testing requirements of different high-voltage equipment such as HV cables, transformers and arresters for multi-scenario application.
Q3: How does the tester ensure the accuracy and authenticity of test data?
A: It adopts direct sampling of current, voltage and waveforms at the HV side to avoid signal distortion from line transmission; equipped with ±3% high-precision AC measurement and 1% accurate voltage measurement for tgδ test, and closed-loop negative feedback control to eliminate output capacity rise effect, fully ensuring data authenticity and accuracy.
Q4: Is the tester easy to operate on-site, and does it support immediate data archiving?
A: It is built with a fully automatic microcontroller core and ultra-simplified one-touch operation logic, matching an ergonomic color touch screen with menu-guided step-by-step operation for easy mastery. It has a built-in high-speed printer and large-capacity memory, supporting on-site instant printing of test reports and flexible storage/retrieval of historical data.
Q5: What safety protection functions does the tester have for on-site operation?
A: It is equipped with multiple safety protection designs: advanced optical isolation technology for high-low voltage circuit isolation, integrated protective resistors to limit short-circuit/overcurrent, and intelligent over-voltage & over-current dual protection with automatic power-off and alarm, fully ensuring the safety of on-site testers and equipment.
Q6: Can the tester work continuously for a long time on-site, and what is its adaptability to harsh environments?
A: With an optimized heat dissipation system, it can realize 60 minutes of stable full-load continuous operation, meeting the demand of on-site continuous testing of multiple equipment. Its portable rugged trunk design uses US-made special mixed resin outer box, and it can work stably in the temperature range of -10℃ ~ +50℃ and humidity ≤85%, adapting to various indoor and outdoor harsh substation/construction site environments.
Q7: Does the tester support data interaction with computers, and what certifications has it obtained?
A: It is configured with optional RS232/USB communication interfaces, supporting two-way data interaction with PC terminals for remote control and professional data analysis. The core technology has national invention patent certification, and the whole machine complies with EU CE certification, meeting international quality and safety standards for global application.
Q8: Does the tan delta test of the tester comply with industry standards, and what are its measurement ranges?
A: The tan delta test results are analyzed fully in compliance with the IEEE 400.2 international standard; the dielectric loss measurement range is 0.01×10⁻³ ~ 655.35×10⁻³, with a resolution of 1×10⁻⁵, and the capacitance measurement range is 0.001μF ~ 10μF, meeting the precision testing requirements of various HV equipment.
Q9: What is the output performance of the tester, and can it display test waveforms in real time?
A: It has a 1~60KV AC peak output and +60KV DC rated output, with standard true sine wave output and voltage waveform distortion ≤3%. It supports real-time synchronous display of voltage & current curves and dynamic display of actual test output waveforms, enabling intuitive monitoring of test processes and abnormal timely detection.
Q10: What is the structural design of the tester, and is it convenient for on-site transportation and carrying?
A: It adopts a 1×60KV integrated device structural design, with a portable rugged trunk-style outer case, which is small in size and easy to carry and transport. The special mixed resin material ensures the device is impact-resistant, dustproof and anti-corrosion, suitable for frequent on-site movement and use.
