The Hioki IR5051 Digital High Voltage PV Insulation Tester offers a variety of functions for measuring insulation at high voltages. With expanded capabilities, the IR5051 also offers insulation resistance testing with a PV function for measuring power generation without sacrificing safety or accuracy.

The test voltage, insulation resistance, and leakage current values can be checked simultaneously. PI, DAR, DD, and capacitance values can also be displayed.

The slightest movement of a person or measurement cord can cause unstable measurements. This instrument utilizes shielded wires, a proprietary filter, and low-current measurement technology to reduce noise and obtain stable measurement values.

Dielectric breakdown is reduced by gradually increasing the voltage to the object under test in a stepwise manner. If an insulation failure is found, the test will be immediately stopped.

The user can record to their smartphone or tablet with the free GENNECT Cross app via usage of the Z3210 Wireless Adapter (not included). The sampling rate of these measurements is a maximum of once per second.

The rechargeable AA batteries within the unit are used rather than single-use dry cells for a higher level of environmental friendliness.

Finding Ground-Faulted Solar Panels

Insulation resistance testers with the PV function are able to measure without being affected by the generated current of the PV system. With a normal insulation resistance tester, the insulation resistance cannot be measured correctly because the meter cannot separate the measurement current from the generated current.

With the GENNECT Cross app, measured values can be displayed on a picture taken on-site. The app will also create a report on-site.

To repair the system, it is necessary to determine which solar panel has a ground fault. By measuring voltages at the main switch and transferring them to the GENNECT Cross app, the location of the ground-faulted panel can be easily determined.

The Hioki IR5051 Digital High Voltage PV Insulation Tester is capable of safely and accurately measuring voltages up to 2000 volts DC.