A New Era in Voltage Transformation: ZXHJ Self-Boosting Precision VT

Voltage transformers (VTs) are critical components in power systems, providing accurate voltage measurement for metering, protection, and control. Traditional VTs, while reliable, often face limitations in accuracy, size, and portability, especially when used as calibration standards in testing environments. The ZXHJ Self-Boosting Precision Voltage Transformer represents a significant leap forward, addressing these challenges with innovative design and superior performance.

Traditional VT Limitations vs. ZXHJ Advantages

Conventional precision VTs often rely on bulky designs and may require external boosting transformers to achieve higher voltage ratios. This not only increases the system's footprint but also introduces potential error sources and complicates the calibration process. Maintenance needs, such as periodic checks on core integrity and winding insulation, can also lead to downtime.

In contrast, the ZXHJ series integrates the self-boosting functionality directly into its design. This eliminates the need for an external booster, streamlining the setup and reducing overall system error. Its compact and robust construction challenges the traditional trade-off between size and performance.

Core Technological Innovation

The standout feature of the ZXHJ transformer is its advanced wound-core technology. The core is manufactured from a single piece of grain-oriented silicon steel strip, which is then vacuum-annealed. This process creates a core with virtually no air gaps, resulting in exceptional magnetic properties:

1.Low Excitation Current: Minimizes losses and reduces the burden on the system.

2.High Accuracy: The stable and efficient magnetic circuit is fundamental to achieving its high precision ratings.

3.Excellent Stability: The vacuum heat treatment ensures the core material remains stable over time and under varying operational conditions.

Technical Superiority in Application

The technical parameters of the ZXHJ series speak directly to its role as a calibration standard:

1.Voltage Levels: Covering a wide range from 6kV to 220kV, it meets the needs of most medium and high-voltage applications in generation, transmission, and distribution.

2.Unmatched Accuracy: With accuracy classes of 0.05, 0.02, and even 0.01, it is designed for the most demanding calibration tasks. When compared to standard 0.1 or 0.2 class VTs used in everyday metering, the ZXHJ provides an order-of-magnitude higher precision, making it an ideal reference standard for verifying the performance of working VTs in error test systems.

Key Benefits for Technicians and Engineers

1.Compact and Portable: Its small size and integrated design make it exceptionally easy to transport and set up in different locations, such as field testing sites or various labs, unlike older, cumbersome standard sets.

2.Simplified Operation and Wiring: The self-boosting design means a simpler connection diagram, reducing the chance of wiring errors and saving valuable time during setup.

3.Maintenance-Free Operation: The robust, hermetically sealed construction requires no regular maintenance, ensuring long-term reliability and reducing the total cost of ownership.

Conclusion：

The ZXHJ Self-Boosting Precision Voltage Transformer is more than an incremental improvement; it redefines the benchmark for calibration standards. By combining revolutionary core technology with a practical, user-focused design, it offers technicians and engineers a tool that delivers unparalleled accuracy, reliability, and operational simplicity. For utility departments, test labs, and manufacturers engaged in the critical task of VT calibration, the ZXHJ series represents the new gold standard, ensuring the integrity and accuracy of the entire power measurement chain.

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/