CT PT Turns Ratio Tester

Designed as an all-in-one solution for CT/PT validation, this portable intelligent UHV-109A CT PT Turns Ratio Tester performs essential tests: excitation characteristic curves (for saturation analysis), turns ratio verification, and polarity determination. Its integrated design enables accurate assessment of critical parameters-including ratio error, phase displacement, and name terminals-through automated procedures. The tester enhances grid safety by guaranteeing measurement accuracy and protective relay coordination, serving as an indispensable tool for commissioning, maintenance, and compliance testing of instrument transformers.

1.Consult Manual: If the instrument malfunctions (e.g., won't power on, abnormal display, obviously wrong results, overtemperature alarm), first consult the troubleshooting guide in the manual.

2.No User Repair: Never attempt to open the chassis for repair without professional knowledge and tools! Internal components include hazardous high-voltage capacitors, and precision circuits are sensitive to ESD.

3.Professional Repair: If the issue persists after confirming it's not caused by operation or external factors (e.g., power, test leads), contact the instrument manufacturer or their authorized service center for diagnosis and repair. Provide a detailed description of the fault.

1.Discharge Procedure: Always fully discharge the HV output terminals of the instrument and the tested mutual inductor using the instrument's built-in discharge function or a discharge rod before disconnecting leads after Volt-Ampere testing (especially high-voltage tests), to prevent electric shock from residual voltage.

2.Grounding: Strictly follow the manual's grounding requirements to ensure test safety.

3.Operational Compliance: Strictly adhere to the instrument's operating procedures and safety rules.

 

1. Laboratory testing: In the laboratory environment, the testing instrument can be used for detailed automatic testing of protective and metrological CT/PT to ensure their performance meets design standards.
2. On site inspection: For transformers installed in harsh environments such as high temperature, high humidity, sea, desert, extreme cold, and high altitude, the tester can provide accurate and reliable test results to ensure the safe and stable operation of the equipment.
3. Daily maintenance of power companies: Power companies use testing instruments to regularly inspect the performance of transformers, promptly identify and address potential issues, and ensure the normal operation of the power system.
4. Substation acceptance: After the installation or maintenance of transformers, the substation uses a testing instrument to conduct acceptance tests to ensure that the equipment meets operating standards.
5. Research and development by research institutes: When developing new transformers and related technologies, testing instruments provide critical data support and technical support.

FAQ
Q1: What are the main items that can be tested by the CT PT turns ratio tester?
A1: It mainly includes key parameters such as transformation ratio, polarity, error curve (primary and secondary), induced fluctuation, insulation resistance, DC resistance, etc.
Q2: Why is it necessary to regularly test transformers?
A2: Transformers may experience performance degradation during operation due to aging, damage, or environmental factors. Regular testing can promptly identify and address issues, ensuring the safety of the power system.
Q3: How to choose the accuracy level for transformer testing?
A3: The choice of accuracy level depends on the specific application of the transformer in the power system, for example, measuring transformers require higher accuracy levels.
Q4: How to ensure the accuracy of test results?
A4: Ensure a stable testing environment, use a calibrated transformer characteristic comprehensive tester, and have professional personnel operate and analyze the data.
Q5: Can the CT PT turns ratio tester be used near live equipment?
A5: Not allowed. The CT PT turns ratio tester can only be connected for measurement after confirming that the tested equipment is completely powered off, tested, and grounded.
Q6: How long does the battery life of the CT PT turns ratio tester last?
A6: It can work continuously for about 4 to 6 hours when fully charged. It is recommended to prepare backup batteries on site or use an external power adapter.
Q7: Is the measurement result of the CT PT turns ratio tester greatly affected by temperature?
A7: It has an impact. When used within the ambient temperature range of 5 ℃ to 40 ℃, there may be deviations in measurement data at extreme temperatures.
Q8: What are the advantages of the testing equipment from Wuhan UHV Power Technology Co., Ltd?
A8: The testing equipment of Wuhan UHV Power Technology Co., Ltd. usually has the characteristics of high integration, intelligence, easy operation, and high measurement accuracy, which can meet the needs of different users.

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