Patent ID: 9632116
Date: 2017-04-25
CPC Classifications: G01R,H02S,Y02E

Claim:
1. An inspection apparatus for inspecting polarities of poles of a plurality of DC voltage sources with regard to a reference potential, each pole being individually connected to one input terminal of a plurality of input terminals of a combiner circuit, the input terminals not being connected to each other, the inspection apparatus comprising: at least two electric contacts each configured to be individually connected to one input terminal of the plurality of input terminals of the combiner circuit such that each one of the at least two electric contacts is connected to one pole of one of at least two DC voltage sources of the plurality of DC voltage sources, respectively, a signaling element configured to emit a matching signal when subjected to an electrical signal, and one switching element per each of the at least two electric contacts, the switching elements being configured to forward the electric signal towards the signaling element if a polarity of a voltage present at the respective electric contact matches a polarity pre-set for the respective electric contact with regard to the reference potential, and further configured to block the electric signal if the polarity of the voltage present at the respective electric contact does not match the pre-set polarity, wherein the switching elements are electrically connected in series.