• Qualitrol

Monitor for Turbo Generator Rotor Winding, FluxTrac

Qualitrol offers FluxTrac – a field-hardened, permanently-connected Monitor for making rotor magnetic flux measurements using existing flux probes. Up to four generators can be connected to the monitor. Traditionally, such measurements have been achieved utilizing portable instrumentation. With the advent of cost-effective modern electronics, the rotor flux test lends itself to automated data collection via a permanently connected FluxTrac instrument. For user convenience, the data can be collected remotely from the user's office via the company’s Windows-based TracCon software, eliminating the need for a costly and time consuming site visit each time flux measurements are required. FluxTrac is ideal in today's environment of reduced maintenance and testing staff. In automated plants where load data is locally available, integrating FluxTrac with the client’s machine monitoring systems will eliminate testing time, and guarantee the collection of accurate, and trendable results.

The FluxTrac monitor measures the magnetic flux in the vicinity of the rotor surface in synchronous machines to determine if turn-to-turn shorts have occurred in the rotor winding. This test has been widely applied in large turbine generators, and has found more a limited application in critical synchronous motors and hydrogenerators. Flux measurements are the most powerful means of monitoring the condition of rotor windings on-line, and are a proven tool used to provide information on the integrity of the rotor winding inter-turn insulation. This information is critical in planning maintenance, explaining abnormal vibrations, and verifying new and rewound rotor integrity.