Fast delivery Product Introduction The HZDP-50kV VLF Hipot Tester is designed for large insulation systems and industrial generators. It applies AC and DC withstand tests with cutting-edge 0.1Hz ultra-low frequency technology. Equipped with a responsive 7-inch touchscreen, ARM7 microcontroller, and high-speed AD circuit, it provides precise insulation measurements. This tester is suitable for high-voltage power cables, industrial capacitors, and large motors, ensuring safe and compliant operation under national standards and adhering to 2004 L/T849.4-2004 requirements for ultra-low frequency high-voltage generators. 4. Voltage positive, negative peak error: <3% 5. Voltage waveform distortion degree: <5% 6. Conditions of use: indoor, outdoor; temperature: -10°C~+40°C; humidity: <85%RH 7. Power supply fuse: See table 3 8. Power Supply: Voltage 220V±5%, 50±5Hz Note: If the portable generator is used for power supply, the generator output voltage and frequency are required to be stable (generally, the power is greater than 3kW, the frequency is 50Hz, and the voltage is 220V±5% • State-of-the-art microcomputer control and digital frequency conversion technology for voltage rise, drop, measurement, and protection. • Entirely automated testing procedure for efficiency. • Simple operation: straightforward wiring and intuitive controls. • Full protection: over-voltage and over-current at high/low sides, rapid action <10ms ensures reliability. • Safe: low-voltage controller connected with generator via photoelectric isolation. • Closed-loop feedback on high and low voltage avoids output capacitance spikes. • Equipped with capacitive touch screen, Chinese LCD, automatic storage, and printing functions. • Wide frequency range: 0.1Hz, 0.05Hz, 0.02Hz selection. • Compact design and light weight for outdoor convenience.