Embedded sensors detect contactor erosion

Electronic technology can alert plant operators to the remaining lifetime of a variety of rotating and moving devices. The most recent advance is the embedding of sensors in contactors, devices used to energize and de-energize electrical circuits. Siemens has announced that it will include both embedded sensors and light emitting diodes (LEDs) on its Siemens Sirius 100 hp and above air/vacuum contactors. The embedded electronic sensors are programmed to report on the actual progress of erosion on each of the main contacts. Results can be stored. With this information, maintenance planners can schedule contactor replacement at the appropriate time. An additional benefit is that plant operators can now track the performance of various contact materials and over time can use the information to select the best materials for their environment.

Siemens