PG 20-100

HV-Pulse Generator

Impulse voltage tests of Solar Modules

The HV-Pulse generator PG20-100 is used for impulse voltage tests of solar modules (photovoltaic panels) with the standard surge voltage waveform 1.2/50 µs according to IEC 60060-1/2 up to 20 kV acc. to. IEC 61730-2.

For the surge voltage tests of solar modules, these are enveloped with a copper foil as described in the relative above standard. After that, the connections of the solar modules are tested with surge voltage against the copper foils. The tight copper foil envelope required by the standard results in comparatively high capacitances of approx. 10 - 183 nF, which is switched in parallel to the output of the impulse generator.

Therefore, a special impulse voltage generator is required for this standard specified test, which can generate the specified impulse wave shapes for the different EUT-capacitances, which are a result of the varying dimension of the solar modules to be tested.

The high voltage Pulse Generator comprises 5 different pulse forming networks, which allow generating the requested wave shapes fully complying with the tolerances specified in the standard for the different EUT capacitances.

The PG 20-100 excels by its compact design, simple handling and precise reproducibility of the test impulses. The pulse forming Networks are equipped with maintenance-free semiconductor switches.

The generator features a microprocessor-controlled user interface and a 7” touch screen unit for ease of use. The microprocessor allows the user to execute either standard test routines or a “user-defined” test sequence. The test parameters which are shown on the built-in display, are easily adjusted by means of the touch screen.

A standard USB port provides the ability to print a summary of the test parameters to a USB stick.

Moreover, all generator functions may be computer-controlled.

The software program PG-REMOTE allows full remote control of the test generator via fiber optic Ethernet interface as well as documentation and evaluation of test results, according to the IEC 17025. To record definite impulses, it is equipped with an Impulse Recording Function (IRF)