The KDYZ-201 is a dedicated instrument for testing the electrical performance of zinc oxide (ZnO) lightning arresters. It uses a microprocessor-controlled measurement system to analyze total current, resistive current and its harmonics, power frequency reference voltage, active power, and phase difference. With a 5.7-inch LCD display and built-in thermal printer, it provides clear waveform visualization and on-site report generation. It supports both AC220V power and an optional high-capacity lithium battery for >8 hours of continuous operation, making it suitable for both lab and field use.

• Isolated current and voltage sensors ensure safe and reliable operation.
• Stores up to 200 sets of test data in non-volatile internal memory.
• Optional RS232 interface for remote control and data export to a host computer.
• Performs anti-interference calculations to compensate for phase differences in A/C phase currents.
• High-speed sampling and digital signal processing deliver exceptional measurement accuracy.
• Rugged, dustproof, waterproof, and corrosion-resistant plastic enclosure for portability.
• Supports continuous testing with real-time voltage/current curve display and quick printing.
• Can test A, B, and C three-phase arresters in sequence and save data as a single group.

• Power Supply: AC220V/50Hz; optional high-capacity lithium battery for >8 hours of continuous operation
• Measurement Range: Leakage current: 0–10mA (expandable); Voltage: 30–100V (expandable)
• Accuracy (Current): Total current >100μA: ±(5% reading + 1 digit)
• Accuracy (Voltage): Reference voltage signal >30V: ±(2% reading + 1 digit)
• Measured Parameters: Leakage current waveform, fundamental RMS, peak; resistive current fundamental and 3rd/5th/7th harmonics; positive/negative peak values (Ir+, Ir-); capacitive current fundamental; full voltage/current phase difference; voltage RMS; arrester power loss
• Reference Signal Sampling Cable: 20m (expandable)
• Dimensions: 360mm × 260mm × 140mm (main unit)
• Weight: 5.0kg (main unit)
• Display: 5.7-inch 320×240 LCD with high-speed thermal printer