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 rotoroverhaul.
Case Study: Cutsforth Solutions for 250 MW Westinghouse
THE PROBLEM: A large power company in the mid west noticed ongoing arcing and sparking on this particular unit.
Case Study: DIY Grinding Corrected by Cutsforth Truing
THE PROBLEM: A large, privately owned power company in the U.S. has a 180 MW Westinghouse generator with aftermarket brush holders installed.
Shaft grounding, remote monitoring of data collected
Important to attend user group vendor fairs for two important reasons: It’s where the food and adult beverages are, and where you’ll almost always see something of value that you were not aware of.
BEST PRACTICE: Regular inspection critical to avoiding collector-ring fires
Collector-ring fires on generator exciters should not occur, but they do, and more often than most generating plant personnel would believe.
Attention to detail critical for preventing collector-ring fires
Collector ring fires are not a new phenomenon. They’ve been occurring for decades, and the reasons for ring fires, and how to avoid them, have been discussed extensively at user-group meetings and in technical papers and articles.
Cutsforth Puts the Wheels on Innovation
7FA ring fire suggests shift from peaking to base-load duty is not as simple as just running longer
How to solve brush and brush holder problems
Cutsforth Introduces Innovative Shaft Grounding System Featuring Dual Copper Grounding Ropes, Mounting Flexibility, and In-service Metering
Dave Cutsforth gives presentation at EPRI on “The Root Causes of Collector Ring Fires.”
Exciter Brush Maintenance Video Series
Improved brush change-out procedure
Cutsforth Has a New Height Setter Tool That Allows Turbine Generator Plant Maintenance to Easily Re-Install the Easychange Online-Removable Brush Holder
Cutsforth’s Growth Continues as Company Distribution Center Moves to Bloomington, MN