Fast delivery I 24-hour customer service I customizable Product Introduction HZDP-40kV VLF Hipot Tester offers advanced testing for higher medium-voltage devices. It performs AC and DC withstand testing, including power frequency, frequency conversion, and ultra-low frequency techniques. The device integrates a 7-inch touchscreen, ARM7 controller, and precise AD acquisition, delivering reliable insulation evaluation. Optimized for medium-to-large cables, enhanced power capacitors, and medium industrial generators, it fully meets national electrical standards and the technical conditions specified in 2004 L/T849.4-2004 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, • Advanced digital frequency conversion technology with microcomputer control, capable of voltage rise, fall, measurement, and protection. • Test process is fully automatic for smooth operation. • Easy to use: simple wiring and foolproof interface. • Multi-level protection: high and low voltage over-current and over-voltage protection with response <10ms, ensuring instrument safety. • Safe operation: controller links to generator low voltage through photoelectric isolation. • High-low voltage closed-loop negative feedback keeps output stable without capacitive overshoot. • Complete setup: capacitive touch screen, Chinese LCD, automatic data storage, and printing. • Broad test range: 0.1Hz, 0.05Hz, 0.02Hz selectable frequencies. • Lightweight, compact, convenient for field operation.