Darui Electric recommends for you
Comprehensive Transformer Tester is a new generation of innovative CT and PT testing instrument developed based on the traditional comprehensive transformer tester for volt-ampere characteristics, ratio, and polarity, which uses voltage regulators, boosters, and current boosters. After extensively listening to user feedback, conducting extensive market research, and in-depth theoretical research, this instrument adopts high-performance DSP and FPGA, advanced manufacturing processes, ensuring stable and reliable performance, complete functions, high automation, high testing efficiency, and is at the leading level domestically. It is a professional testing instrument for transformers in the power industry.
1.1 Main Technical Features
Comprehensive functions, meeting the testing requirements for various types of CTs (such as protection, metering, TP types) including excitation characteristics (i.e., volt-ampere characteristics), ratio, polarity, secondary winding resistance, secondary burden, ratio error, and phase error, as well as for various PT electromagnetic units including excitation characteristics, ratio, polarity, secondary winding resistance, and ratio error.
On-site calibration of current transformers does not require standard current transformers, current boosters, load boxes, voltage regulation control boxes, or high-current cables. The instrument uses extremely simple test wiring and operation to achieve current transformer calibration, greatly reducing work intensity and improving work efficiency, facilitating on-site calibration of transformers.
It can accurately measure ratio error and phase error, with maximum allowable error of ratio error ±0.05% and phase error ±2 minutes, capable of measuring 0.2S class current transformers, with a ratio measurement range of 1 to 40000.
Based on advanced frequency conversion method to test CT/PT volt-ampere characteristic curves and 10% error curves, it outputs only up to 180V AC voltage and 12Arms (36A peak) AC current, yet can handle CT testing with knee point up to 60KV.
Automatically provides knee point voltage/current, 10% (5%) error curves, accuracy limit factor (ALF), instrument security factor (FS), secondary time constant (Ts), remanence coefficient (Kr), saturated and unsaturated inductance, and other CT and PT parameters.
Testing meets various transformer standards such as GB1208 (IEC60044-1), GB16847 (IEC60044-6), GB1207, and automatically selects the appropriate standard based on transformer type and class.
Testing is simple and convenient; one key completes CT DC resistance, excitation, ratio, and polarity tests. Except for burden test, all other CT tests use the same wiring method.
Full Chinese dynamic graphical interface, no need to refer to the manual for wiring and parameter setting: dynamically displays parameter settings, automatically showing relevant parameters based on the currently selected test item; dynamically displays help wiring diagrams, showing the corresponding wiring diagram based on the currently selected test item.
5.7-inch graphic transflective LCD, clearly visible under sunlight.
Operated by rotating optical mouse, simple, fast, and easy to master.
The panel comes with a built-in printer that can automatically print generated test reports.
Test results can be exported via USB drive, and the program can be upgraded via USB drive, which is convenient and fast.
The device can store 1000 sets of test data, which is not lost upon power failure.
Comes with background analysis software, facilitating the storage, conversion, and analysis of test reports, and can be used for comparison, judgment, and evaluation of test data.
Easy to carry, device weight <9Kg.
Note: The above information and technical parameters are compiled and published by Yangzhou Darui Electric Co., Ltd.
