What are the functions and characteristics of online CT?

Online CT is computer tomography or industrial computed tomography imaging. Although the mathematical theory related to tomography theory was first proposed by J. in 1917 Radon proposed, but it only became a new imaging technology after the emergence of computers and their integration with radiology.

Online CT has the following characteristics:

1. Automated testing: fast, simple, and convenient. The 380AC and 220AC power supplies automatically calculate the inflection point voltage, current, and composite error, and visually judge whether the transformer is qualified. It can automatically test and depict the volt ampere characteristic curve, eliminating tedious labor such as manual voltage regulation, manual recording, organization, and curve tracing; No need for specialized training, easy to master. Disadvantage: Poor reliability; The volume is large and requires an external power supply.

2. Comprehensive functionality: It can test the voltage current characteristics, 5% and 10% error curves, DC resistance, transformer ratio, and polarity of the protective CT.

1) The instrument can perform qualitative measurements on voltage transformers: when measuring, the instrument applies a certain power frequency voltage to the primary side of the voltage transformer to measure its primary voltage and secondary induced voltage, obtain the transformation ratio and polarity of the voltage transformer at this voltage, and conduct volt ampere characteristic experiments on the voltage transformer.

2) The instrument can measure the on-site secondary load of current and voltage transformers, and can measure the ratio difference and angle difference of current transformers under this load.

3. Equipped with a large screen graphics LCD and fully Chinese graphics: clear and beautiful, intuitive and convenient. During testing, directly display the volt ampere curve chart, equipped with a thermal printer, which can quickly print the curve chart and test data; Test data can also be stored at any time.

4. Strong scalability:

a) External voltage regulator can be used for testing: If the output voltage and current of the device cannot meet the requirements, a user provided voltage regulator can also be used to connect to the device for testing. The wiring and testing method for the external voltage regulator test are very simple.

b) Optional external voltage regulator: The optional external voltage regulator can increase the voltage to 2000V, 3A, and can be used for conducting volt ampere characteristic tests on 5000/1 level current transformers.

5. It has storage and printing functions, and all set parameters can be saved after power failure.