ZXHJ Self-Boosting Precision VT: Core Technology & Calibration Application

Introduction

Voltage transformers serve as critical metering and measurement equipment within power grids. Accurate error testing of voltage transformers relies on high-performance standard voltage transformers as calibration references. The ZXHJ series self-boosting precision voltage transformer is purpose-built to satisfy the calibration demands of power utility and manufacturing sectors, delivering reliable reference standards for voltage transformer error verification.

Core Design and Magnetic Technology

The ZXHJ series adopts advanced wound core manufacturing technology. Its magnetic core is fabricated from continuous grain-oriented silicon steel strip. After specialized vacuum heat treatment, the assembled core contains no air gaps. This structural characteristic greatly reduces magnetic reluctance, endowing the transformer with outstanding comprehensive magnetic properties. Compared with conventional laminated core transformers, the gap-free wound core minimizes magnetizing current, effectively lowering excitation loss and improving transformation ratio stability, which is essential for maintaining high measurement precision under working conditions.

Main Technical Features

Compact mechanical layout, small overall dimensions and convenient transportation for on-site calibration tasks.

Maintenance-free structure, straightforward wiring procedures and simple operational workflow, lowering the technical threshold for field operators.

Key Technical Specifications

Rated voltage levels: 6kV, 10kV, 35kV, 110kV, 220kV

Available accuracy classes: 0.05, 0.02, 0.01

These multi-grade accuracy options enable the equipment to cover laboratory precision calibration and on-site power transformer error testing scenarios, adapting to diverse high-voltage power system voltage classes.

Application Value in Power Industry

As a standard reference device for voltage transformer error tests, the self-boosting precision voltage transformer addresses the practical requirements of power supply enterprises and equipment manufacturers. Its integrated self-boosting design simplifies the overall calibration test setup, eliminating the need for separate boosting equipment in many test schemes. For metrology engineers and high-voltage test technicians, high-precision standard voltage transformers are fundamental to guaranteeing the traceability of electrical measurement data. Stable magnetic performance and portable design make this type of equipment suitable for both fixed metrology laboratories and mobile field calibration work.

Conclusion

Wound core, gap-free magnetic design is a vital development direction for high-precision standard voltage transformers. The ZXHJ self-boosting precision voltage transformer combines excellent magnetic characteristics, multiple accuracy grades and portable construction. It provides a dependable calibration standard solution for voltage transformer verification, supporting the accuracy and reliability of measurement in transmission, distribution and power metering systems.

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/