Detecting Hidden Risks: Advanced Endwinding Vibration Monitoring on a 110 MW Hydrogenerator.
Endwinding vibrations are a common phenomenon in rotating machines. Severe endwinding vibrations can lead to mechanical degradation of winding insulation, ultimately causing failures and short circuits due to continuous temperature and load cycling.
Machine condition assessment of a 415 MW unit based on off-line and on-line measurements.
The paper describes different diagnostics methods, both off- and on-line, that were applied during and after the overhaul on 415 MW vertical Francis hydro-unit, in order to obtain insight into its mechanical state condition for safe operation and future refurbishment.
Root cause analysis on a 110 MW hydro unit based on vibration and air gap monitoring data.
The paper describes the root cause analysis of increased turbine shaft displacements on a 110 MW hydro-unit.
RSO (Repetitive Surge Oscillograph) test for the evaluation of electric machine rotors.
The data obtained by the oscilloscope allows finding faults in the rotor winding. It can be performed with the rotor attached or removed from the machine.
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High Potencial Test (HI-POT) for the evaluation of coils in rotating electric machines.
Overvoltage tests, also known as high potential or“Hi-Pot”, are used frequently to ensure the minimum dielectric strength of the insulation system. It is not a destructive test, nor does it degrade materials.
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We offer low voltage motors from ½ to 1,000 HP and 230 to 575 V and medium voltage motors from 100 to 50,000 HP and 2,300 to 13,800 V.
Mounting structures
These state-of-the-art medium voltage controllers are available in fullvoltage or reduced-voltage models for the control of induction, wound rotor or synchronous motors, transformers, and capacitors
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Energy storage
Adjustable speed drives specialize in integrated communications, allowing end users to access real-time data and refined controls to maximize system performance.
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Adjustable speed drives specialize in integrated communications, allowing end users to access real-time data and refined controls to maximize system performance.
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Adjustable speed drives specialize in integrated communications, allowing end users to access real-time data and refined controls to maximize system performance.
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