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Main technical indicators:
>Current transformer error measurement part
①Overall accuracy: 1/3 of the error limit of the tested current transformer
②Test range: 5A/5A~25000A/5A or 5A/1A~6300A/1A
③Working range of tested current transformer: 1% to 200%
④Secondary load: 2.5VA~300VA, COSφ=0.1~1.0
⑤Accuracy range of tested current transformer: 1.0, 0.5, 0.5S, 0.2 and 0.2S
⑥Resistance and admittance measurement error ≤5.0%
>Measurement range: R: 0.00Ω~20.0Ω
Y: 0.000mS~100.0mS
>Instrument power consumption: 20VA
>Instrument accuracy class: 0.05S
>Maximum dimensions (cm): 460×375×183
>Weight (kg): 10
Current Transformer On-site Calibration Instrument has a built-in standard voltage transformer equivalent to the same ratio as the tested current transformer, with accuracy up to 0.05 class, accurately measuring the ratio and no-load error of the tested current transformer. Then, combined with the test results of impedance and admittance, the error of the transformer is calculated.
>Adopts near-power-frequency heterodyne power supply for testing to prevent on-site power frequency electromagnetic radiation and series interference.
>Wide measurement range, up to 5A/5A~25000A/5A or 5A/1A~6300A/1A.
>Has the function of testing current transformer ratio and secondary winding internal resistance.
>Adopts 800×600 high-resolution large-screen color LCD display, with user-friendly interface and operation design, using touch screen auxiliary operation, making operation more convenient and faster.
>Adopts precise software algorithms to further improve the accuracy of measurement data.
>Has intelligent judgment of external wiring status, prompting wiring errors, ratio errors, polarity errors, etc.
>Automatically rounds test data and judges whether it is out of tolerance. Out-of-tolerance data is displayed in orange, and the bottom right corner of the window shows out-of-tolerance, making the data characteristics of the transformer intuitive and clear.
>Directly issues on-site verification conclusions, qualified or out-of-tolerance.
>Large-scale memory can store up to 1000 on-site test data records.
>Uses RS232 or USB interface to connect to computer to print data certificates.
>Uses engineering plastic mold casing, shockproof and pressure-resistant, ensuring the safety of on-site operators and equipment.
Current Transformer On-site Calibration Instrument also has the functions of measuring current transformer error by recursion method and voltage transformer error by potential difference method, facilitating on-site verification of metering devices.
>On-site verification of current transformers does not require standard current transformers, current boosters, load boxes, voltage regulators, and high-current wires. It uses extremely simple test wiring and operation to achieve verification of current transformers,
greatly reducing work intensity and improving work efficiency, facilitating on-site verification of transformers.
Note: The above information and technical parameters are compiled and released by Yangzhou Dary Electric Co., Ltd.
