Case Study: Mitigating ‘Photographing/Ghosting’ on Collector Rings

THE PROBLEM: A large, privately owned company in the southeast U.S. had a 35 MW turbine generator undergo a major rotor overhaul. During this major, new collector rings and new after market, cartridge-style, plug-in holders were installed by a contractor. These new holders were recommended and sold to the plant by an independent sales representative. … Continued

Case Study: Cutsforth™ Solutions for 250 MW Westinghouse

Arcing Problems on a 250 MW Westinghouse THE PROBLEM: A large power company in the mid west noticed ongoing arcing and sparking on this particular unit. THE CAUSE: The brushes were bound and hanging up inside the brush holders inhibiting brush movement, causing the arcing (electrical erosion) and compromising the brush to ring connection. The end … Continued

Case Study: DIY Grinding Corrected by Cutsforth™ Truing

Plant Worsens Slip Rings by DIY Grinding  THE PROBLEM: A large, privately owned power company in the U.S. has a 180 MW Westinghouse generator with aftermarket brush holders installed. This generator was experiencing constant arcing on the brushes and photographing on the slip rings. Plant personnel reported seeing arc “trailers” that wrapped more than 30 … Continued