may 7 c37.2 standards survey - final report

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1、C37.2StandardsSurvey   Type:ExecutiveSummaryReport   Date:5/7/2007   Totalnumberofresponsescollected:18841: DeviceFunctionNumberandDescription(AllwordsbelowaredirectquotesfromIEEEC37.2-1996)DefinitelyKeepPerhapsKeepPerhapsRetire&ReuseDefinitelyRetire&Reuse

2、Don'tKnowTotalMeanStdDevDevicenumber10-unitsequenceswitchAdevicethatisusedtochangethesequenceinwhichunitsmaybeplacedinandoutofserviceinmultiple-unitequipment.Count11110829248111311053.1521.010%byRow10.0%9.8%26.4%43.5%10.2%100.0%Devicenumber22-equalizercirc

3、uitbreakerAdevicethatservestocontrolormakeandbreaktheequalizerorthecurrentbalancingconnectionsforamachinefield,orforregulatingequipment,inamulti-unitinstallation.Count445927956215811023.4400.807%byRow4.0%5.4%25.3%51.0%14.3%100.0%Devicenumber35-brush-operat

4、ingorslip-ringshort-circuitingdeviceAdeviceforCount477528553316011003.3870.835ConductedbyIEEEResearchraising,lowering,orshiftingthebrushesofamachine;short-circuitingitssliprings;orengagingordisengagingthecontactsofamechanicalrectifier.%byRow4.3%6.8%25.9%48

5、.5%14.5%100.0%Devicenumber58-rectificationfailurerelayAdevicethatfunctionsifapowerrectifierfailstoconductorblockproperly.Count13914326644611211063.0251.074%byRow12.6%12.9%24.1%40.3%10.1%100.0%Devicenumber70-rheostatAdeviceusedtovarytheresistanceinanelectri

6、ccircuitwhenthedeviceiselectricallyoperatedorhasotherelectricalaccessories,suchasauxiliary,position,orlimitswitches.Count2052432473278011022.6811.122%byRow18.6%22.1%22.4%29.7%7.3%100.0%Devicenumber82-dcload-measuringreclosingrelayAdevicethatcontrolstheauto

7、maticclosingandreclosingofadccircuitinterrupter,generallyinCount1239825949413311073.1541.044ConductedbyIEEEResearchresponsetoloadcircuitconditions.%byRow11.1%8.9%23.4%44.6%12.0%100.0%Devicenumber93-field-changingcontactorAdevicethatfunctionstoincreaseordec

8、rease,inonestep,thevalueoffieldexcitationonamachine.Count7412231643016211043.1700.934%byRow6.7%11.1%28.6%38.9%14.7%100.0%TotalCount743848194432739187726N/AN/A%byRow9.6%11.0%25.2%42.4%11.9%100.0%2: Ifyouhavean