KDHG-220P is an advanced CT/PT analyzer utilizing high-performance DSP and ARM technology for reliable and automated testing. Based on the low-frequency method, it outputs only 180V to test CTs with knee-point voltages up to 65KV. The unit features a 5.7-inch transflective LCD, stores up to 2000 test records, and comes with PC software for detailed analysis and report generation.

1. Comprehensive testing for protection CTs (including TP class), metering CTs, and protection PT electromagnetic units;
2. Automatically calculates knee-point voltage/current, 10%/5% error curve, ALF, FS, Ts, Kr, and inductance parameters;
3. High-precision ratio and phase error measurement: ratio accuracy ±0.05%, phase accuracy ±2min, supports 0.2S class CT testing;
4. Wide CT ratio range: 1-50000;
5. Based on low-frequency test principle: outputs max 180V AC and 12Arms (36A peak) to test CTs with knee-point up to 65KV;
6. Compliant with GB20840.1 (IEC60044-1), GB20840.2 (IEC60044-6), GB20840.3 standards;
7. User-friendly interface with full Chinese graphical display;
8. Stores up to 2000 test sets with non-volatile memory; data export via U disk for PC analysis and Word report generation;
9. 5.7-inch graphic transflective LCD visible in direct sunlight;
10. Simple one-key testing: completes DC resistance, excitation, ratio, and polarity tests with same wiring (except load test);
11. Portable design weighing less than 9kg.

Test Purpose: Protective class CT, protective class PT
Output: 0~180Vrms, 12Arms (36A peak)
CT Ratio Range: 1~30000, Accuracy: ±0.05%
PT Ratio Range: 1~10000, Accuracy: ±0.2%
Phase Measurement: Accuracy ±2min, Resolution 0.5min
Secondary Winding Resistance: Range 0~300Ω, Accuracy 0.2%±2mΩ
AC Burden: Range 0~1000VA, Accuracy 0.2%±0.02VA
Input Power: AC220V±10%, 50Hz
Operating Environment: Temperature -10°C~50°C, Humidity ≤90%
Dimensions: 340mm × 180mm × 330mm, Weight <9kg
Compliance: GB20840.1 (IEC60044-1), GB20840.2 (IEC60044-6), GB20840.3