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The effects of material transfer in relays diagnosed by force and/or voltage measurement

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3 Author(s)
Hammerschmidt, M. ; Inst. of Power Syst. & Energy Econ., Vienna Univ. of Technol., Austria ; Neuhaus, A.R. ; Rieder, W.F.

Material transfer may change the effective contact distance and/or jam the contacts delaying or even preventing contact opening. These effects can be recorded in an actual relay by measuring the contact force and/or the contact voltage during each operation. Proper recording and evaluation during life tests of relays may indicate the reasons and even the mechanisms of contact failures.

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Components and Packaging Technologies, IEEE Transactions on  (Volume:27 ,  Issue: 1 )