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Rotor thermal sensitivity is a phenomenon that is caused by uneven circumferential temperature distribution or by axial expansion forces which are not distributed uniformly. This causes the rotor to bow and to produce significant rotor vibration that may limit generator operation at high field current.
VibroSystM offers a monitoring solution, adapted from its air gap measuring technology, to detect, measure and diagnose this phenomenon.
Two flat stator-mounted sensors are installed 90° apart (135° & 225°) on three radial planes along the rotor axis. Measurements on all channels are synchronized and can be correlated through the ZOOM software. Additionally, air gap data can be correlated with shaft vibration, stray flux and rotor pole temperature data using the more extensive ZOOM system.
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