Advancements in Transformer Verification: ZXHQ-T

Transformer verification is a critical process in ensuring the accuracy and reliability of power systems. Traditional methods often involve manual operations, limited automation, and time-consuming processes. The ZXHQ-T High-speed Multi Transformer Verification Device, developed by our company, represents a significant leap forward in this field. This article provides a technical overview of the ZXHQ-T device, highlighting its features, capabilities, and advantages over conventional verification systems.

Overview of the ZXHQ-T Device

The ZXHQ-T is a next-generation transformer verification device designed with a virtual instrument concept. It allows users to perform automated testing of current and voltage transformers simply by operating a virtual interface on a computer. Key parameters such as transformer type, range, accuracy level, capacity, and power factor can be input via mouse and keyboard, streamlining the entire verification process. The device also supports result analysis, calculation, database management, and customized report printing.

Key Features and Comparisons

1. Automation and Control
   Unlike traditional systems that rely heavily on manual intervention, the ZXHQ-T uses a single-chip microcontroller for measurement, control, and display. This automation reduces human error and significantly enhances testing efficiency.
   Comparison: Conventional devices often require manual load switching and result recording, which are slower and prone to errors.

2. Computer Integration and User Interface
   The device features a computer interface and a large screen display, providing a user-friendly operation interface and rich measurement information. This integration elevates the level of office automation and reduces labor intensity.
   Comparison: Older systems typically lack advanced interfaces and require standalone instruments for display and control.

3. Automatic Load Switching
   The ZXHQ-T automatically switches current and voltage load boxes during testing, eliminating the need for manual adjustments. This capability ensures consistent and accurate measurements across various test conditions.
   Comparison: Traditional methods often involve manual load box changes, leading to delays and potential inaccuracies.

4. Error Handling and Diagnostics
   The device incorporates robust error-catching mechanisms to promptly notify users of incorrect operations or faults. For example, it provides clear polarity and ratio error indications under specific conditions.
   Comparison: Conventional devices may not offer real-time error diagnostics, increasing the risk of undetected issues.

5. Flexible Verification Capabilities
   The ZXHQ-T allows direct verification even when the standard transformer and device under test have different transformation ratios, as long as the standard transformer’s primary rating is greater than or equal to that of the tested transformer. This flexibility simplifies the verification process.
   Comparison: Many traditional systems require matched transformation ratios, limiting their applicability.

6. High Accuracy and Performance
   With a basic error of ± (X × 2% + Y × 2% ± 2 words) for in-phase components and ± (X × 2% + Y × 2% ± 5 words) for quadrature components, the device meets Level 2 accuracy standards. Its wide measuring range (e.g., 0.0001%–200% for in-phase components) ensures versatility for various transformer types.
   Comparison: Older verification devices often have lower accuracy and narrower ranges, restricting their use in high-precision applications.

Technical Specifications

• Environmental Conditions: Operates at 5°C–40°C, <80% relative humidity, and altitudes up to 2,500m.

• Power Supply: 220V ± 5V, 50Hz ± 0.5Hz.

• Measuring Range: Covers in-phase components (0.0001%–200%), orthogonal components (0.001’–999.9’), impedance (0.0001Ω–60Ω), and admittance (0.0001ms–60ms).

• Workload: Low power consumption (e.g., <0.12W for current at cosφ = 1).

• Safety: Includes insulation and withstand voltage tests (e.g., 1.5kV for 1 minute between power socket and shell).

Conclusion

The ZXHQ-T High-speed Multi Transformer Verification Device sets a new standard in transformer verification by combining automation, flexibility, and high accuracy. Its advanced features address the limitations of traditional systems, making it an ideal choice for modern power systems. For technicians, mastering this device can significantly improve testing efficiency and reliability while reducing operational complexity.

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/