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Intelligent sensors.

MSENSE® DGA measures the hydrogen, carbon monoxide and moisture levels in the insulating oil of power transformers as primary early indicators of potential thermal or electrical damage to the transformers. Continuous functional safety and reliable measured values are ensured through components which are as robust as they are technically refined and through the new two-level measurement procedure deployed in the oil flow itself.

MSENSE® BM bushing monitoring uses an innovative and field-tested double reference method (2/3 reference method) that monitors the condition of the bushing insulation in terms of a change in capacitance (C1) and dissipation factor (tan δ) in a three-phase system. The key aspect of this process is that, since the algorithm continuously incorporates all three bushings into mutual monitoring, the temperature dependence of other processes is eliminated. Furthermore, the signals of the respective voltage transformers are used as a reference for detecting the symmetry of the three-phase system. The measurement is checked for validity and grid asymmetries are effectively equalized and eliminated. By cross-checking the three phases, the double-reference method ensures that the influence of temperature and voltage fluctuations on a bushing monitoring system are effectively limited.

The MESSKO® MTeC EPT303 FO measures the winding temperature directly at the source and communicates using TCP protocols. Up to 32 innovative MESSKO® MSpot glass-fiber sensors are fitted directly in the transformer's windings and measure the hot-spot temperature at the source with incredible accuracy.