Voltage Transformer Tester

I. Overview

The Low-Voltage High-Voltage Transformer Calibration Instrument is a field testing device designed by our company to reduce the workload of on-site electromagnetic voltage transformer calibration. The instrument is capable of verifying the actual error of voltage transformers under high-voltage operation conditions while operating at low voltage. It can cover10kV/100V、10kV//100V/、35kV/100V、35kV//100V/、110kV//100V/Measurement of electromagnetic voltage transformers with variable ratio. The instrument incorporates some new ideas and technologies during its design, such as common platform technology, voltage simulation load, high-accuracy voltage transformers with internal components, and self-boosting power supplies, etc. These features make the instrument more convenient, quick, and efficient for users.

Section Two: Key Features

Feature Highlights

1)The instrument now features a dual-winding design.PTTransformer Test Function, no need for an external load box during testing.

2)The internal transformer with a variable ratio and self-pressure voltage, achieving an accuracy grade of0.05Please provide the Chinese content you would like to be translated into American English.1200VNo content provided for translation.2400VAccurately measure the error of power voltage transformers under specified voltage levels.

3)The instrument employs simulation load technology during electromagnetic voltage transformer measurements, which can calculate the load error of the voltage transformer under rated and minimum load conditions. Therefore, a voltage load box is not required when calibrating electromagnetic voltage transformers.

4)The accuracy grade of the internal transformer calibrator section is2No Chinese content provided.

5)The instrument features automatic routine point sampling, making it highly convenient and efficient for users during routine measurements.

6)The instrument features an internal power source with automatic voltage boost and superior protection performance.

7)The instrument utilizes our recently developed universal platform technology, which allows users to easily access valuable information such as past measurement data and wiring diagrams for various measurement objects. It directly provides measurement values, rounded figures, error curves, and automatically judges the measurement results, further enhancing the instrument's intelligence level.

8)This instrument can measure temperature and humidity, enabling users to keep up-to-date with the working environment on-site at all times.

Introduction to Principles

1)Part of the Principle of Transformer Calibrator

The basic principle of the low-voltage high-voltage transformer calibrator is illustrated in the following diagram. The entire system consists of analog and digital circuit sections. The analog circuit section primarily handles the signal processing of differential current, differential pressure, and percentage meters, thereby separating the differential current and pressure signals into in-phase and quadrature. The digital circuit section is mainly responsible for processing the signals further.A/DConvert the data and process the converted data to derive the final measurement result.