• 1. The on-site tester for current transformer error adopts a recursive method to measure the error of current transformers, which facilitates on-site calibration of measuring devices
• 2. On site verification of current transformers does not require standard current transformers, current transformers, load boxes, voltage regulation control boxes, or high current wires. It uses extremely simple testing wiring and operation to achieve the verification of current transformers, greatly reducing work intensity and improving work efficiency, making it convenient to carry out on-site transformer verification work
• 3. The on-site testing instrument for current transformer error has a standard voltage transformer equivalent to the same transformation ratio of the tested current transformer, with an accuracy of 0.02 level, equivalent to a 0.05S level current transformer, accurately measuring the transformation ratio and no-load error of the tested current transformer. Then, based on the test results of impedance and admittance, calculate the error of the transformer
• 4. Using a power supply close to the power frequency for testing, to prevent on-site power frequency electromagnetic radiation and series interference
• 5. Wide measurement range, capable of measuring both standard ratio and non-standard ratio current transformers
• 6. The accuracy of the transformer calibrator attached to the instrument can be verified using a transformer calibrator inspection device
• 7. Directly integrate on-site data to determine whether it is qualified or unqualified
• 8. Measurement of standard ratio current transformers and measurement of non-standard ratio current transformers with 1% -120% (S-level) standard point errors (angle difference, ratio difference)
• 9. Measure any point error (angle difference, ratio difference) of 1% -200% (S-level) between standard and non-standard ratio current transformers
• 10. Measurement and display of the standard points and any point errors (angle difference, ratio difference) of the current transformer under the upper and lower limit loads in one measurement and display
• 11. One measurement and display of the actual regulation point and error (angle difference, ratio difference) of the current transformer under any load at any point
• 12. Detect the polarity and transformation ratio of known and unknown current transformers, and be able to determine the actual current ratio of unknown current transformers. It can also vaguely determine whether the secondary current of unknown current transformers is 5A or 1A
• 13. It has intelligent judgment of external wiring status, indicating wiring errors, transformation ratios, polarity errors, etc. Automatically organize test data and determine if it exceeds the tolerance
• 14. 320 * 240 large screen LCD display, fully Chinese interface. Easy wiring and operation, convenient to carry
• 15. Various measurement data can be stored and printed on-site, making it convenient for users to query
• 16. The instrument is conveniently connected to a computer through a standard USB interface to transfer data, and the backend management software processes reports and prints certificates according to national standards
• 17. The chassis should be made of shockproof and pressure resistant materials to ensure the safety of on-site operators and equipment

Our company's products are strictly produced in accordance with international and national standards and industry regulations. They have passed the testing of national, provincial, and municipal power research institutes, measurement centers, and authoritative power departments, and have fully passed the ISO9001 international quality management system certification, the People's Republic of China manufacturing measuring instrument license, GB/T19001-2016 quality management system requirements, GB/T24001-2016 environmental management system requirements, and GB/T45001-2020 occupational health and safety management system requirements.