Portable insulation resistance meter HZ3051

• Test voltage range: 50 V – 5000 V
• Fixed voltage levels: 100 V, 250 V, 500 V, 1000 V, 2500 V, 5000 V
• Maximum short-circuit current: 6 mA, adjustable from 1 mA to 6 mA
• Maximum continuous output power: 27 W
• Display: 5-inch industrial color LCD, 800 × 480 resolution
• Measurement functions: IR, DAR, PI, Step Voltage, AC/DC voltage, frequency
• Power supply: Built-in replaceable lithium battery with fast charging

The HZ3051 Insulation Resistance Tester is a high-performance diagnostic instrument developed by Huazheng for insulation testing of power equipment and electrical systems. With a maximum output voltage of 5 kV and adjustable short-circuit current, it meets the testing requirements of cables, motors, transformers, switchgear, and other high-voltage electrical assets. The industrial-grade 5-inch color LCD ensures clear data visualization, while hardware and software filtering significantly enhance anti-interference capability, making the instrument suitable for on-site testing in complex electromagnetic environments.

Equipped with independent discharge circuitry, breakdown protection, and arcing mode, the HZ3051 ensures both operator safety and effective fault location during insulation testing. It supports multiple diagnostic methods including insulation resistance, dielectric absorption ratio, polarization index, and step voltage testing, with dual DAR calculation modes for flexible analysis. The built-in AC/DC voltmeter can automatically identify signal types and measure AC frequency. Powered by a large-capacity lithium battery with a replaceable battery pack design, the HZ3051 is an ideal solution for preventive maintenance, commissioning, and troubleshooting in substations, power plants, and industrial facilities.