Product Introduction
The CT PT Tester is primarily designed for field testing of Protection Class (P Class) CTs and PTs. Key test functions include excitation characteristics, transformation ratio, polarity, demagnetization (Degauss), 5% and 10% error curves, secondary circuit verification, power frequency AC withstand voltage tests, and secondary burden measurement.
The instrument features an LCD interface and a built-in miniature printer for immediate on-site reporting. It also supports data export via USB flash drive for further analysis and reporting on a PC, ensuring straightforward and convenient operation.
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 | 4. Withstand Test of Power Frequency |
| 5. Current Injecting | 5. Degauss |
| 6. Degauss | 6. Calculation of Knee Point Value |
| 7. Withstand Test of Power Frequency Alternating Current | |
| 8. Automatic Calculation of Excitation Knee Point Value |
技術パラメータ表
| 主要な技術パラメータ | |
| Operational Power Supply | AC220V±20V, 50～60Hz |
| Equipment Power Supply Output Waveform | 正弦波 |
| Single Machine Output Voltage of Excitation Characteristic | 0~1200V |
| Excitation Output 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 |
| エラー | ≤0.5%(0.2%*Reading+0.3%*Range) |
| 動作温度 | -10℃~+40℃ |
| 相対湿度 | <90RH% |
| 高度 | ≤1000m |
| Overall Dimension(Length*Width*Height) | 450*280*260(mm) |
| 重さ | ≤30Kg |
製品の特徴
1、Supports testing of both Current Transformers (CT) and Potential Transformers (PT).
2、Complies with GB 20840.3-2013, GB 20840.2-2014, and other relevant standards.
3、All test items can be performed using a single integrated unit, eliminating the need for external auxiliary equipment.
4、Features a built-in mini fast printer for immediate on-site printing of test results.
5、Equipped with an intelligent controller for simplified and user-friendly operation.
6、Incorporates a large LCD screen with an intuitive graphical interface.
7、Automatically determines and displays the CT/PT excitation (saturation) inflection point value according to the programmed procedure.
8、Automatically generates 5% and 10% error curves.
9、Stores up to 3,000 sets of test data with retention during power loss.
10、Supports USB flash drives for data export; data can be read on a standard PC to generate WORD format reports.
11、Compact and lightweight design (≤22 kg), making it highly suitable for field testing applications.
Precautions
1、To ensure the safety of personnel and equipment, please read the operation manual carefully before use.
2、The tester must be reliably grounded during operation to prevent injury to personnel or damage to equipment.
3、Do not touch any test terminals while the equipment is in operation.
4、The CT under test must be completely isolated (offline). Testing while in service may affect normal operation or produce inaccurate results.
5、Operation should be performed only by qualified technical personnel.
6、Unauthorized disassembly of the equipment may cause permanent damage.
