Electronic transformers are the most important underlying key equipment in digital substations. According to the national standards G/T 20847.7 for electronic voltage transformers and G/T 20847.8 for electronic current transformers, electronic transformers (ECT/EVT) have two types of outputs: analog output and digital output. This product complies with the national standard 20847.7/8 for electronic transformers and the IEC61850 communication standard. Based on virtual instruments, it can verify and record the ratio and angle difference of analog and digital output of electronic transformers. It can also be applied to the calibration of traditional current and voltage transformers, as well as offline calibration of electronic transformers, providing a movable electronic transformer calibration device for power testing, measurement, and construction units.

Functional Features

Suitable for verifying analog and digital output interfaces of electronic current and voltage transformers based on G/T 20847.7/8, as well as for verifying digital output interfaces

Calibration of traditional current and voltage transformers;

The accuracy level reaches 0.05, with S-level verification function, which can be used to compare 0.2S-level electronic current transformers and 0.2S-level electronic voltage transformers

Reconciliation verification;

Adopting high-precision interpolation method for synchronization, ensuring strict timing synchronization, reliability, and practicality of the data collected by the calibrated transformer and the standard transformer

Greatly improved;

Flexible configuration, can configure traditional current transformer calibration/traditional voltage transformer calibration/electronic current transformer calibration/electronic current transformer calibration according to different needs

Calibration of voltage transformers;

Calculate the ratio and angle difference between the effective current/voltage values of the calibrated transformer and the standard transformer;

Display relevant information such as current, voltage, frequency, etc. of the current wire for comprehensive evaluation of the calibrated parameters;

Display the real-time waveform output of the calibrated transformer and related settings, automatically save the calibration data, and generate a report;

Flexible configuration of experimental parameters, testing scope, testing frequency, sampling points and other related information.

Technical Parameter