OVERVIEW
The RDHG-C Comprehensive CT PT tester is a brilliant, fully automated CT/PT characteristic test professional instrument that plays a key role in relay protection and high-voltage insulation detection.
The instrument has robust and comprehensive testing functions and can accurately complete complex test projects. In terms of CT characteristic testing, a CT volt-ampere characteristic test can be carried out. By accurately applying voltage, the current response of CT under different excitation conditions can be obtained to evaluate its excitation characteristics comprehensively; CT ratio polarity test can be carried out to accurately determine the ratio value of CT and accurately determine whether its polarity meets the standard requirements; CT polarity test can be performed to verify the polarity of the same-name end of CT reliably; CT primary current test can also be implemented to simulate the primary current situation in actual operation and detect the performance of CT.
The instrument also performs well in the PT characteristic test. It can complete the PT volt-ampere characteristic test, analyze PT output characteristics under different voltage inputs in detail, carry out the PT ratio polarity test, accurately determine PT ratio and polarity, and carry out the PT polarity test to ensure the correctness of PT polarity.
The Comprehensive CT PT tester has advanced data analysis and processing capabilities regarding test result processing. Based on the test data, it can automatically, quickly, and accurately calculate a series of key result parameters, such as CT inflection point voltage and current values, which are crucial for evaluating the performance of CT in nonlinear working areas; the ratio difference between CT and PT, which can be used to judge the accuracy of transformer ratio; and the 5% or 10% error curve value for CT, which provides an essential basis for evaluating the working range of CT under specific error requirements. These precise result parameters offer strong support for professionals to judge the performance status of transformers accurately and whether they meet relevant standards.
CHARACTERISTIC
- 1. Support CT and PT detection and can independently output 0-1200V voltage and 0-600A current.
- 2. Equipped with a micro fast printer, the test results can be printed instantly on-site.
- 3. Equipped with an intelligent controller, the operation is simple and easy to understand.
- 4. Comprehensive CT PT tester equipped with a large-screen LCD, providing a graphical display interface.
- 5. The CT/PT (excitation) inflection point value is automatically set according to the standard.
- 6. Automatically generate 5% and 10% error curves.
- 7. Support data transmission via a USB flash drive.
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FAQ
Q: What are CT and PT used for?
A: CTs (Current Transformers) are used for precise current measurement in power systems, critical for metering, protection, and monitoring purposes. PTs (Potential Transformers) are employed to step down high voltages, providing accurate voltage measurements for instruments, protective relaying, and ensuring safe operation in power applications.
Q: How is the CT PT ratio calculated?
A: CT PT ratio is calculated by dividing primary current or voltage by secondary current or voltage using the formula:
Ratio = Primary/Secondary
Q: How the CT & PT are connected with the line?
A: CTs connect in series with the power line for current measurement, while PTs connect in parallel for voltage measurement. This allows accurate readings and effective protection in power systems.
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