EDHGQ-T Type High-Voltage Three-Phase Composite Transformer Calibration Standard Device

Product Introduction

The application of the EHDGQ-T type high-voltage three-phase composite transformer calibration standard device and its testing methods has changed the current traditional single-phase testing method. It complies with the requirements of the current national and industry standards (test guidelines) and is easy to implement. It does not require the multiple wiring tests of the current single-phase method, thus saving a significant amount of manpower and materials, improving work efficiency, and eliminating additional errors brought by the single-phase testing method. Additionally, it can accurately perform error testing on three-phase voltage transformers with Y\YO wiring, ensuring the accuracy and reliability of measurement. The new device's calibration method for three-phase composite transformers (metering boxes) will promote the design and quality improvement of composite transformer products. It can more accurately reflect the characteristics of composite transformers under working conditions and can also reveal potential issues that may arise during actual operation, thereby ensuring fair and just electricity measurement.

Product Features

Revamped the existing traditional single-phase testing method to comply with current national and industry standards (test guidelines), making the inspection process easier to implement. It eliminates the need for multiple wiring tests in the current single-phase method, saving significant labor and materials, enhancing work efficiency, and reducing additional errors associated with single-phase testing. It also allows for accurate error testing of three-phase voltage transformers with Y/YO connections, ensuring measurement accuracy and reliability. The new device's calibration method for three-phase composite transformers (metering boxes) will promote the design and improvement of product manufacturing quality. It can more accurately reflect the characteristics of composite transformers in operation and reveal potential issues during actual work, thereby guaranteeing fair and just electricity metering.

Technical Specifications

Three-phase control console body

Power Input: Three-phase four-wire; Frequency: 50Hz

Control Method: Electric/Mechanical Control

For step-up transformers: 3-phase voltage regulators, 3x3kVA

For use with upflow regulators: 3-phase voltage regulator, 3x3kVA

Three-phase fine-tuning voltage regulator 3×1kVA

Standard Current Transformer with Flow Converter

Rated Current Range: 5A to 400A (for continuous operation)

Rated working voltage: 35kV, high working voltage: 42kV.

Standard Current Transformer Grade: 0.02

Secondary Load: 5VA; Power Factor: cosφ = 1.0

Rated Current: 5A, 10A, 15A, 25A, 30A, 40A, 50A, 60A, 75A, 100A, 150A, 200A, 300A, 400A.

Complete set of equipment