PTA-2000A portable voltage transformer analyzer is a new generation of PT test instrument based on the traditional comprehensive test instrument for voltage transformer volt ampere characteristic ratio polarity error analysis based on voltage regulator, voltage booster and series resonance. After listening to users' opinions widely, after a lot of market research and in-depth theoretical research, PTA-2000A portable voltage transformer analyzer is a new generation of Pt testing instrument. The device adopts high-performance DSP + FPGA, advanced arm industrial control computer and advanced manufacturing technology, which ensures stable and reliable performance, complete functions, high degree of automation, high test efficiency and is in the leading level in China. It is a professional test instrument for transformer in power industry.

Method description:

After startup, the main interface is shown in the figure. There are five functional modules in total

Main interface diagram of power on

PT test: carry out various tests of voltage transformer;

Document management: query, export and delete the saved test records

System setting: setting system parameters and test standards; When accessing the manufacturer, the password needs to be updated.

2.2 parameter setting

Schematic diagram of parameter setting interface

Test items: select the test items to be tested;

In this interface, the latest detailed parameters are displayed. If you need to modify the parameters, you can press "primary parameter" and "secondary parameter" on the right side to modify.

Primary parameter setting interface

Primary rated voltage (kV): input the primary rated voltage and coefficient of PT to be measured;

Rated frequency: the rated working frequency of the tested object can be selected from 50Hz and 60 Hz.

Secondary parameter setting interface

Winding to be tested: the current serial number of secondary winding to be tested, the maximum value is 5, if only one winding of PT is set as 1;

Secondary rated voltage (V): secondary rated voltage and coefficient of current winding;

Winding type: metering and protection are available; 

Accuracy: 0.1, 0.2 and 0.5 for metering winding, 3P and 6P for protection winding;

Rated load / power factor: input rated secondary load and power factor of current winding;

Lower limit load: input the secondary lower limit load of current winding.

Test parameter setting interface

Current temperature: the temperature of current test PT, generally input the ambient temperature;

Calibration temperature: the target temperature of resistance correction, generally 75 ℃;

Test standard: IEC 60044-2, IEC 61869-3 and IEC 61869-3 can be selected, and IEC 60044-2 can be selected for transformer of Chinese national standard.