KDHG-A is a high-voltage CT/PT field tester featuring single-unit output up to 2500V and 1000A without external equipment. Utilizing MBC power control technology with single AC220V input, it provides pure sine wave output for realistic simulation. The unit automatically performs comprehensive tests including volt-ampere characteristics, error curves, and calculates inflection point values. With 1000-record storage, USB export, and intuitive LCD interface, it delivers professional transformer analysis in a portable design.

1.When a single machine is input with 220V, the maximum voltage output is 0-2500V, and the maximum current output is 0-1000A. It supports the detection of 500KV/1A CT and is very suitable for on-site maintenance;
2. Without the need for external auxiliary equipment, most testing tasks can be completed on a single machine;
3. High intelligence design, no need for settings, automatic detection completion;
4. Single phase 220V working power supply, isolated output, multiple protections, safe and reliable;
5. Support CT/PT automatic detection, and support current transformers with detection ratios of 1 and 5;
6. Complete the testing project independently without the need for external power supply or other auxiliary equipment;
7. MBC power control technology, single-phase AC220V input power supply, and the working power supply shares the same input port with the power supply, making the design more scientific and reasonable, and the use safer and more reliable;
8. The power output of the device is all true voltage and current values, and the waveform is a standard sine wave with a frequency of 50-60Hz; Can truly and effectively simulate the true state of the transformer, in compliance with relevant national maintenance regulations;
9. It can detect the volt ampere characteristics, transformation ratio, polarity, 5% and 10% error curves, CT primary current and CT demagnetization of CT/PT, and easily achieve multi-purpose use of one machine;
10. uses a thermal printer to automatically screen and print typical report usage data, which is very suitable for on-site data comparison.

Voltage output: 0-2500Vrms, 5Arms (20A peak)
High current output: 0-1000A
Secondary winding resistance measurement range: 0-50 Ω
Measurement accuracy of secondary winding resistance: ≤ 0.5%
Secondary actual load measurement range: 0-300VA
Secondary actual load measurement accuracy: ≤ 1%
Phase measurement (angle difference) accuracy: ± 4min
Phase measurement (angle difference) resolution: 0.1min
CT variable ratio current measurement range: 2500A/5A (5000A/1A)
CT variable ratio current measurement accuracy: ≤ 0.5%
PT ratio voltage measurement range: 1kV~500kV
PT ratio voltage measurement accuracy: ≤ 0.5%
Working power supply: AC220V (50-60Hz)
Working temperature: -10~50 ℃