Advanced Field Testing: The ZXBLQ-II Zinc Oxide Arrester Tester

Introduction
      Zinc Oxide (ZnO) surge arresters are critical components safeguarding power systems from transient overvoltages. Ensuring their ongoing health is paramount for system reliability. Traditional arrester testing often involved cumbersome methods, potential safety hazards, and limited diagnostic depth. The ZXBLQ-II Zinc Oxide Arrester Tester represents a significant advancement, offering a comprehensive, safe, and user-friendly solution for both live (online) and de-energized (offline) condition assessment.

Beyond Basic Leakage Current: The ZXBLQ-II Advantage
While basic clip-on meters might measure total leakage current, the ZXBLQ-II delves deeper, providing the essential diagnostics needed to identify incipient failures:

1.Comprehensive Parameter Measurement: It doesn't just measure total current (Ix). Its core strength lies in accurately decomposing this current into its resistive component (Ir) – the key indicator of insulation degradation (dampness) and valve element aging – and the capacitive component. Crucially, it also measures:

Power frequency reference voltage (Uref) and its harmonics.

Active power (P).

Phase difference between fundamental current and voltage.

Harmonics of both current and voltage.

2.Advanced Digital Analysis: Leveraging digital waveform analysis and Fourier harmonic analysis techniques combined with digital filtering, the instrument provides stable and accurate readings even in electrically noisy substation environments. This allows for reliable trend analysis and detection of subtle changes indicating problems.

3.Enhanced Safety & Flexibility:

Live Testing Capability: Minimizes system downtime for critical diagnostics.

Versatile Voltage Reference: Supports both traditional PT secondary wiring (providing highly accurate phase reference) and innovative electric field induction (Type I). The latter is a major safety and convenience advantage, eliminating the need for direct connection to live PT secondary terminals, reducing risk and setup time.

Wireless Synchronization (Type II): Further enhances safety and ease of use during live testing by removing wired connections between the voltage reference point and the current measurement unit.

High-Speed Magnetic Isolation Sensors: Ensure reliable data acquisition while maintaining critical electrical isolation for operator safety.

4.Superior Accuracy: Utilizing high-precision sampling circuits and advanced algorithms, the ZXBLQ-II achieves impressive accuracy:

Total Current (Ix): ±(Reading × 5% + 5μA)

Resistive Current Fundamental (Ir - No Interference): ±(Reading × 5% + 5μA)

Reference Voltage (Uref): ±(Reading × 5% + 0.5V)

Harmonics: ±(Reading × 10% + 10μA for Current, ±(Reading × 10%) for Voltage.

5.User-Centric Design:

Large LCD & Intuitive Menu: Features an English menu system for straightforward operation.

Portable & Self-Contained: Integrated rechargeable battery provides up to 6 hours of operation, making it ideal for field use. The compact unit (325x280x140mm) weighs only 3.5kg.

Data Management: Stores 120 measurement records complete with a calendar clock timestamp.

On-Site Reporting: Includes a built-in micro-printer for immediate hardcopy results.

Specialized Functions: Offers resistive current fundamental peak output and side phase correction for complex field conditions.

Contrasting with Traditional Methods/Simpler Testers:

1.Diagnostic Depth: Basic testers often only provide total leakage current. The ZXBLQ-II's ability to isolate the resistive current (Ir) and analyze harmonics is critical for identifying specific failure modes like moisture ingress or valve aging that Ix alone cannot reliably detect early.

2.Live Testing Safety/Ease: Traditional methods requiring direct PT secondary connections pose a significant shock hazard and require switching procedures. The ZXBLQ-II's Type I (E-field) and Type II (Wireless) voltage referencing dramatically improve safety and simplify live testing setup.

3.Data Integrity: Analog meters or simple digital units are more susceptible to field noise. The ZXBLQ-II's digital filtering and harmonic analysis provide significantly more stable and reliable readings in real-world conditions.

4.Efficiency & Record Keeping: Manual recording is error-prone. The ZXBLQ-II's data storage and integrated printing streamline documentation and enable reliable historical trend analysis, which is often lacking with simpler tools.

Key Technical Specifications Summary:

1.Current Measurement: 0-10mA RMS (50/60Hz), ±(5% rdg + 5μA)

2.Resistive Current (Ir): ±(5% rdg + 5μA) - Without Interference

3.Current Harmonics: ±(10% rdg + 10μA)

4.Reference Voltage (Uref): 25-250V RMS, THD<30%, ±(5% rdg + 0.5V)

5.Voltage Harmonics: ±(10% rdg)

6.Phase Angle: 0-360°

7.Battery: 6 Hours Operation, 5 Hour Charge (220V±10%, 50/60Hz)

8.Environment: -10°C to 50°C, Humidity <90%

9.Data Storage: 120 Sets

10.Output: Micro Printer

Conclusion
The ZXBLQ-II Zinc Oxide Arrester Tester is a sophisticated yet practical instrument designed for the modern power technician. It moves far beyond simple leakage current measurement, providing the detailed diagnostic information – particularly the crucial resistive current component and harmonic analysis – necessary for proactive arrester maintenance and failure prevention. Its emphasis on safety (E-field/wireless voltage reference, isolation), accuracy (advanced digital processing), portability (battery operation), and user-friendliness (large display, data storage, printing) makes it a superior choice compared to older or simpler testing methodologies. By enabling efficient and reliable online and offline diagnostics, the ZXBLQ-II plays a vital role in maximizing the reliability and longevity of critical surge protection assets within the power grid.

GDZX is a manufacturer of power detection equipment, offering a diverse range of products with comprehensive models and providing professional technical support. Contact us at +86-27-6552607 or +86-17396104357.Website: http://en.gdzxdl.com/