ARC FAULT PROTECTED ELECTRIC CONVERTER SYSTEM

A wind turbine with an electric converter module, e.g. for converting electric power from a wind turbine generator, the module comprising a first section (S1) with top, a bottom and four side walls to form a first enclosure (E1). The sidewalls can withstand a pressure from an arc flash inside the first enclosure (E1). A first electric conductor (C1) arranged for electric grid (GR) connection penetrates a first side wall (W1), and wherein a second electric conductor (C2) penetrates a second side wall (W2) opposite the first side wall (W1) by means of a sealing mechanism (SL1) of the second side wall (W2), and wherein the first enclosure (E1) houses an electric protective device (D1, D2) electrically connected between the first electric conductor (C1) and the second electric conductor (C2), and a second section (S2) arranged adjacent to the second side wall (W2) of the first section (S1), wherein the second section (S2) forms a second enclosure (E2) housing an electric converter system (CNV) connected at one end to the second electric conductor (C2) and at the opposite end to a third electric conductor (C3) to allow conversion of electric power from the third electric conductor (C3) to electric power to the second electric conductor (C2). A door in the second section (S2) serves to allow service personnel to access components of the electric converter system (CNV) from outside the enclosure (E2). The arc safe first section (S1) allows grid connection for powering necessary equipment in the wind turbine while the converter is disconnected and de-energized during service. Thus safe service of the converter system can be performed without the need for power from a combustion generator.