KDRB-ZB is a professional transformer impedance tester with a built-in test power supply, eliminating the need for an external voltage regulator. With a single connection, it automatically performs three-phase testing on the AB/BC/CA windings, calculates the impedance error percentage, and displays the results intuitively. The device offers comprehensive measurement functions, including short-circuit impedance, reactance, three-phase impedance voltage, and inductance, with voltage/current/power/angle parameters displayed on a large LCD screen.

1. The AC220V low-voltage power supply automatically applies current to the AB/BC/CA high-voltage windings, simultaneously acquiring data and calculating the impedance error percentage;
2. Three-phase testing can be completed with a single connection, eliminating the need to change leads;
3. Supports single-phase or three-phase testing; supports manual or automatic operation modes;
4. The output current limiting function is suitable for various impedance samples;
5. No external voltage regulator is required for testing;
6. Measures short-circuit impedance, short-circuit reactance, and three-phase impedance voltage; displays voltage, current, power, and angle parameters for each test;
7. Built-in inductance measurement function;
8. Large LCD screen with Chinese menu and on-screen prompts for easy operation;
9. Built-in printing and storage functions; compact and lightweight design for high-precision automated testing.

Voltage measurement range: 5-400V Accuracy: Class 0.2
Current measurement range: 0.1-20A Accuracy: Class 0.2
Working power supply: AC220V ± 10% Power frequency: 50 (± 1) Hz
Working temperature: -10 ℃~50 ℃ Environmental humidity: ≤ 85% RH
Host weight: 8kg
Host volume: 405mm * 330mm * 172mm