Shaft grounding ring

Wind turbine grounding ringElectro Static Technology’s AEGIS WTG wind turbine grounding ring prevents bearing damage that could otherwise cause generator failure, unplanned downtime, costly repairs, and lost revenues. Maintenance-free, effective at any RPM, and available for any size wind turbine generator, the ring is designed for OEM installation or easy up-tower retrofit. High-frequency currents induced on the shafts of wind turbine generators can reach levels of 60 amps and 1200 volts or greater. If not diverted, these currents will discharge through the generator’s bearings, but the AEGIS WTG effectively channels them away from the bearings and safely to ground. The WTG is engineered to safely divert up to 120 amps of continuous shaft current at frequencies as high as 13.5 MHz and discharge up to 3000 volts (peak). Ideal for use as part of a preventive maintenance program to protect against premature bearing failures, it can be installed whenever bearings are replaced.

Electro Static Technology
www.est-aegis.com


Volume: July/August 2010