AC Contactor Electrical Health Estimator Model

AC electrical theory

Experimental Investigation on the Arc Motion with Different Configurations of Quenching Chamber in AC Contactor

Two dimensional optical fiber measurement system is used to investigate experimentally the arc motion and reignition with four different configurations of quenching chamber in an AC contactor. It demonstrates that the splitter plate arrangement has significant effect on the arc motion in arc quenching chamber, and fixing arc runner in the first and last splitter plates benefits to arc motion, a...

A new technique to improve AC coil contactor switching in presence of voltage sags

Total complaints related to voltage sags are about 80 % of all the complaints due to power quality transients. AC Contactors are designed to disconnect the load or circuit they control when the main power supply is intentionally interrupted. The sensitivity of AC coil contactors to the applied voltage is thus a potentially weak link in industrial processes. This paper shows the test results obt...

Microsystems for Electrical Ac Voltage Metrology

− In the framework of developing MEMS devices to fabricate AC voltage references for electrical metrology and high precision instrumentation, several first devices have been designed and fabricated using a Silicon On Insulator (SOI) Surface Micromachining process. The measured MEMS AC voltage reference values have been found to be from 5 V to 100 V in a good agreement with the calculated values...

Fault Diagnostics of Electrical AC Machines