CISPR 11 Standard

The CISPR 11 Standard with the catchy title of Industrial, Scientific and Medical Equipment—Radio Disturbance Characteristics—Limits and Methods of Measurement covers power electronic devices such as solar inverters.

Although there were voltage limits for conducted emissions at the mains port in the past, limits for the connections to the solar cells were missing.

After a positive vote of the international standard bodies, CISPR 11 Ed.6.0 is about to appear officially.

In this new version, limits finally apply for the DC terminals, in particular for systems up to 2kVA in residential environments.

These limits are 74dBµV between 500kHz and 30MHz.

The IARU has worked with the standardisation bodies over the last five years to achieve this but the work in terms of photovoltaic does not end here.

With the current limit, however, a reasonable protection for short wave reception has already been achieved.

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