AN OVERVOLTAGE PROTECTION ASSEMBLY FOR MEDIUM VOLTAGE WIND TURBINES

摘要

An overvoltage protection assembly, which includes a grounding plate (40), a mechanical standoff including two upright insulated or non-conducting supports (26, 28) and a conducting member providing a bridge (30) spanning the supports. The mechanical standoff is secured to a top surface of the grounding plate and is insulated from the grounding plate. A plurality of overvoltage-protection modules (10) are connected to each other in series. A first module (11) in the series is fixed in place on the top surface of the grounding plate and the last module (15) in the series is fixed in place on a bottom surface of the bridge (30). The overvoltage protection assembly is replicated on the grounding plate for each of three phases (50) of service to a power grid and three cables (52, 64, 66) connect each conducting member to a corresponding phase. A single cable (56) connects the grounding plate to a common grounding bar (60).