Product Introduction
CT PT Characteristic Tester is a portable instrument designed for on-site verification of Protection-class (P-class) Current Transformers (CTs) and Voltage Transformers (VTs/PTs). It performs key tests including excitation characteristic (knee-point, saturation), turns/ratio testing, polarity verification, core demagnetization (degaussing), 5% and 10% error curve derivation, secondary circuit continuity and burden measurement, secondary winding insulation withstand (power frequency AC), and secondary load testing. Equipped with an integrated LCD display, a built-in micro printer for instant field reports, and USB data export capabilities, it offers comprehensive functionality with streamlined operation for efficient field use.
Product Features
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 | 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 | 0~1000A |
| 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 | |
| Altitude | ≤1000m |
| Overall Dimension(Length*Width*Height) | 450*350*350(mm) |
| Weight | ≤28Kg |
