KDBR-CZ integrates four instruments into one: active transformer capacity tester, characteristic parameter tester, DC resistance tester, and material analyzer. Featuring ARM+FPGA+ADC architecture with RT-Thread OS and 7-inch touch screen, it provides precise measurement of transformer parameters including material discrimination for 10kV dry-type transformers. Built-in 3-phase 50Hz sine wave power source eliminates external generators, while internal battery supports 100+ tests per charge.

1. Four-in-one function: Capacity testing + Characteristic parameter measurement + DC resistance measurement + Material analysis;
2. Accurately identifies the materials of 10kV dry-type distribution transformers (copper/aluminum material identification);
3. Utilizes an ARM+FPGA+ADC architecture and runs on the RT-Thread operating system, ensuring system stability and high measurement accuracy;
4. Features a 7-inch color touchscreen with a Win8-style interface;
5. Provides comprehensive electronic help, including diagrams and text descriptions for each operation;
6. Built-in large-capacity memory with USB interface for data storage and PC upload;
7. Supports remote firmware upgrades for future feature expansion;
8. Real-time monitoring of voltage/current channels, displayed as a harmonic histogram;
9. Single-screen display: voltage, current, frequency, power factor, active/reactive/apparent power, with vector diagrams;
10. Customized low-voltage short-circuit leads allow for safe tool-free connection to transformer terminals;
11. Measures the capacity of various distribution and power transformers without an external power supply;
12. Supports external voltage/current transformers to extend the measurement range;
13. Automatic correction: waveform distortion, temperature, and non-rated voltage/current (parameter input required);
14. Voltage range up to 750V, current range up to 100A, with internal protection; no range switching errors;
15. DC resistance testing, 6 selectable output current levels, maximum up to 10A;
16. Comprehensive parameter settings: test winding, tap position, number of phases, test temperature, reference temperature;
17. Discharge alarm to reduce accidental operation.

• Built‑in Power Output:
  • Voltage: 0–10V
  • Current: 0–10A
• Characteristic Channel Measurement:
  • Voltage range: AC 750V, accuracy: ±0.2%(F.S) ±1 digit
  • Current range: AC 100A, accuracy: ±0.2%(F.S) ±1 digit
• DC Resistance Measurement:
  • Ranges: 0.001Ω–0.1Ω(10A), 0.03Ω–1Ω(5A), 0.06Ω–5Ω(1A), 0.1Ω–50Ω(200mA), 0.3Ω–200Ω(30mA), 100Ω–100kΩ(<5mA)
  • Accuracy: 0.2% ±2µΩ, resolution: 0.1µΩ
• Material Testing: Suitable for 10kV dry‑type distribution transformers
• Power & Loss Accuracy:
  • Power: ±0.5%(F.S) (CosΦ>0.1), ±1.0%(F.S) (0.02<CosΦ<0.1)
  • No‑load/load loss: ±2% (0.1≤CosΦ≤1)
• Transformer Capacity Range: 6.3–125000kVA
• Operating Temperature: -20°C ~ +60°C
• Dimensions: 37cm (L) × 32cm (W) × 19cm (H), Volume: 22496cm³, Weight: 15000g