Research On The Method Of Detecting Time Parameters Of Electromagnetic Relay

Because the action takes too long arcing phenomena is common in automation equipment.when the contacts of electromagnetic relays in a closed process,This will not only seriously affects the life of the equipment,it was also a huge security risks.At present domestic and foreign has about the survey electromagnetic type relay contact reliable aspect research extremely many.About has the electric arc reason analysis aspect research very to be also many.But a combination of both which uses for to examine the electric arc to have the reason is does not have nearly by what reason result literature.Considers actual in the production,electric arc hazardous nature,Investigation of the arc causes its importance,This article mainly aims at in the electromagnetic type relay contact closed process to have the electric arc phenomenon,Design research scheme whether the electromagnetic detection of arcing phenomena relay operation time.According to the GLB1461-99,considering the condition request,based on computer and data acquisition card hardware system gathering electromagnetic type relay in its contact closed process,the contact both sides voltage and flows after the coil electric current dynamic change.Software design of the entire system drive,monitoring,and data storage and display,save.Finally through analysis electromagnetic type relay dynamic curve,Union electromagnetic type relay coil quiescent current equation.Using the least squares method,the Gauss-Newton method for curve fitting and other mathematical algorithms for data processing,Finally obtains is measured the electromagnetic type relay in closed process operating time.According to the analysis,record the arcing time threshold,Actual production and programming scheme is designed to detect whether the electromagnetic relay's irregular arc action for too long.The practice proved,use this article shows the method can in the effective judgment equipment electromagnetic type relay produce electric arc,whether results in the electricity after the coil the contact operating time excessively to be long related,it has certain practical significance to the actual production.