GDHG-108A CT/PT Analyzer
GDHG-108A CT/PT Tester supports test voltage method to test bushings CTs which installed on transformer or inside switch-gear, suitable for the laboratory and on-site detection.
Itcan be easily and conveniently done voltage current characteristic, transformer ratio, ratio and phase angle error, load test items on CT/PT.
● Using the voltage detection principle to measure CT and PT.
● To meet the requirements of GB1207, GB1208, GB168-47 (IEC60044-1.6) and other standards.
● No external auxiliary equipment, a single machine can complete all test items.
● With high speed micro printer: real-time print the test result.
● Using intelligent controller, operation is simple.
● 5inch LCD screen display.
● Automatically given CT/PT (excitation) knee point value.
● Auto display 5% and 10% error curve.
● Save 3000 groups data, it won't lost after power off.
● With USB port. The data can be saved in USB disk and read by PC (WORD format file).
● Light weight, less than 22kg, suitable for onsite testing.
Main functions
| CT (voltage detection) | PT |
| • Voltage current characteristic curve (excitation characteristic) | • Voltage current characteristic curve (excitation characteristic) |
| • Auto calculate knee point value | • Auto calculate knee point value |
| • Auto display 5% and 10% error curve | • Turns ratio measurement |
| • Turns ratio measurement | • Polarity determination |
| • Polarity determination | • AC Hipot Test |
| • AC Hipot Test | • Demagnetization of iron core |
| • Demagnetization of iron core | • Voltage multiple can be adjusted (1.2-2.5times) in PT VA characteristic test |
| • Accurate limit factor(ALF) measurement |
Main parameters
| Item | Parameter | |
| Power supply | AC220V±10%, 50Hz | |
| Output | 0-1000Vrms(20A peak) | |
| Accuracy of excitation measurement | ≤ 0.4% of the reading+0.6% of the range | |
| CT turns ratio measurement | Range | ≤3000A/1A(15000A/5A) |
| Accuracy | ±1.0% | |
| PT turns ratio measurement | Range | ≤500KV |
| Accuracy | ±1.0% | |
| Operation environment | Temperature: －10℃ ～ 40℃, humidity: ≤90%, Altitude: ≤1000m | |
| Dimension&Weight | Dimension: 440mm × 360mm × 340mm Weight: ≤22Kg | |
| CT/PT Tester | 1piece |
| Test Lead | 1set |
| Earth cable | 1piece |
| Power cord | 1piece |
| 2A fuse | 2pcs |
| User's guide | 1copy |
| Factory test report | 1copy |
