Product introduction
The UHV-103A CT PT Tester mainly tests the volt ampere characteristic, transformation ratio polarity and other comprehensive parameters of current transformers and voltage transformers. For testing the excitation characteristics, transformation ratio, polarity, ratio difference, and angle difference of current transformers: for testing the excitation characteristics, transformation ratio, polarity, secondary winding resistance, ratio difference, etc. of voltage transformers.
Product Parameters
Function Table
| I. Current Transformer (CT) | II. Voltage Transformer (PT) |
| 1. Magnetization Curve | 1. Excitation Characteristic Test |
| 2. Transformation Ratio Test | 2. Transformation Ratio Test |
| 3. Polarity | 3. Polarity |
| 4. 5％ and 10％ error curve,ALF | 4. Withstand Test of Power Frequency |
| 5. Current Injecting | 5. Resistance Test |
| 6. FAST TEST | 6. Calculation of Knee Point Value |
| 7. Withstand Test of Power Frequency Alternating Current | 7. Actual Secondary Load Test |
| 8. Automatic Calculation of Excitation Knee Point Value | |
| 9. Actual Secondary Load Test | |
| 10. Resistance Test |
Technical Parameter Table
| Major Technical Parameters | |
| Operational Power Supply | AC220V±20V, 50～60Hz |
| Equipment Power Supply Output Waveform | Sine Wave |
| Single Machine Output Voltage of Excitation Characteristic | 0~1200V |
| Excitation Current Set | 0~20A |
| Single Machine Output Current of Transformation Ratio Test | 0~600A |
| CT ratio measurement range | 5~25000A/5A(5000A/1A) |
| PT ratio measurement range | 1~500KV |
| Load Range | 5~500VA |
| Resistance measurement range | 0.1~300Ω |
| Error | ≤0.5%(0.3%*Reading+0.2%*Range) |
| Operating Temperature | -10℃~+40℃ |
| Relative Humidity | <90RH% |
| Altitude | ≤1000m |
| Overall Dimension(Length*Width*Height) | 450*350*350(mm) |
| Weight | ≤28Kg |
main advantages of CT PT tester
Comprehensive functionality, one device can complete multiple transformer tests;
High degree of automation, reducing manual calculations;
High testing efficiency, suitable for rapid on-site inspection;
Easy to operate, reducing the difficulty of on-site testing;
Convenient data management, easy to save and generate test records;
Strong anti-interference ability, suitable for power field testing environment.
Application areas of CT PT tester
Substation: used for CT, PT ratio, polarity, and volt ampere characteristic testing.
Power plant: used for testing the performance of transformers in generators and booster stations.
Power transmission and distribution system: used for detecting and maintaining transformers in transmission and distribution equipment.
Relay protection system: used for CT performance and polarity inspection to ensure reliable operation of protection devices.
Electric energy metering system: used for measuring transformer ratio and polarity detection to ensure accurate metering.
Transformer manufacturer: used for product factory inspection and quality control.
Electric power maintenance unit: used for on-site inspection, maintenance, and preventive testing of transformers.
Electric power testing institution: used for performance testing, calibration, and experimental research of transformers.
Industrial power enterprises: used for the operation and maintenance of power distribution equipment and transformers in the factory.
FAQ
1. What is a CT PT tester?
The CT PT tester is a comprehensive testing equipment used for detecting current transformers (CT) and voltage transformers (PT). It can test and analyze parameters such as transformation ratio, polarity, volt ampere characteristics, excitation characteristics, and winding resistance.
2. What is the function of volt ampere characteristic testing?
The volt ampere characteristic test is mainly used to analyze the excitation performance of CT, determine whether there are abnormalities in the iron core, and help determine the inflection point voltage, excitation current, and iron core saturation characteristics, providing a basis for evaluating the performance of relay protection CT.
3. Is the CT PT tester suitable for on-site use?
suitable The equipment usually adopts an integrated and portable design, with a relatively simple operation process, and can be used in substations, switchgear, transformer installation sites, and maintenance sites.
4. Is the CT PT tester operation complicated?
Generally, automatic testing and intelligent operation design are adopted. Users can connect the test line according to the on-screen prompts and select the corresponding test items to complete the test, which can reduce the risk of manual calculation and wiring errors.
5. What parameters should be focused on when purchasing?
When purchasing, it is recommended to focus on testing items, testing scope, ratio measurement range, volt ampere characteristic testing capability, output voltage/current, measurement accuracy, data storage, printing function, communication interface, instrument weight, and on-site applicability.
6. Which customers are suitable for purchasing the CT PT tester?
Mainly applicable to substations, power plants, power companies, power installation and maintenance units, transformer manufacturing enterprises, metrology and testing institutions, research institutes, and large industrial enterprises.
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