Quartzteq GmbH
Bahnhofstrasse 3
CH – 5436 Würenlos
Switzerland
Shaft Voltage
With multiple sources of shaft voltage that can affect your rotating electrical asset, monitoring this parameter can give an early indication of increasing levels of shaft voltage as well as detecting inadequate earthing.
Shaft voltage will occur in rotating electrical machines due to capacitive coupling of voltages within the machine windings or static excitation systems and can also be induced by asymmetry in the magnetic circuit of the motor or generator. The build-up of shaft voltage is also likely to cause bearing damage which could ultimately result in catastrophic failure. The associated currents due to the phenomonen of shaft voltage will also cause deterioration, but which can be prevented with the fitting of the Shaft Voltage module.
An additional monitoring parameter
- Suitable for AC/DC motors and generators (including hydro and turbo generators)
- Continuously monitors up to 2 inputs (two voltages) for the NDE and DE of machine
- Compatible with either the LIFEVIEW LIVE or LIFEVIEW MOBILE analyser
- User-friendly software for data display and analysis
- Up to 10 years of storage for archiving voltage data and trending at user selectable intervals (available when utilising the LIFEVIEW LIVE option)
Special long-life brushes installed at non-drive end
Detects excessive shaft voltage which may cause bearing problems
Harmonic analysis (FFT) of shaft voltage signal provides information about potential rotor insulation problems
Protection circuit reduces impulse voltage stress and reduces EMI in PD measurements
Installed on the non-drive end of the machine
Filter module contains overvoltage suppression (as well as bearing protection)
Displays shaft voltage and harmonic analysis for indication of possible rotor fault
10 years of data storage
Applications
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