Overview of the Display
A Loopreadingselected(Ω)
B PFC/PSCprospectivefaultcurrent/prospectiveshort
circuitcurrentreadingselected(A/kA)
C Looptestmodeselected–notrip(default)orHi-I(highcurrent)
D HANDSFREEoperation
E Ohmssymbol
F Volts(AC)
G VoltagemeasurementfunctionL-N(default)L-EandN-E
H Faultcurrent
I Wait–resultcalculationinprogress
J Wait–testerhasgoneoveroperatingtemperature
K BatteryCondition(=good)
L Greaterthan(>)lessthan(<)indication
Loop-PFC/PSC Testing
1 PowerON/OFF–PressingthisbuttonturnstheKTD40onandpressingagainturns
theunitoff.Intelligentautopower-offoccursafter3minutesofinactivity,butfor
safety the instrument stays powered if it is displaying a socket wiring fault.
2 WhentheKTD40isrstconnectedtoalivesocketitwillautomaticallytest
thesocketwiringtoestablishthatthecircuitwireshavebeenconnectedtothe
correctterminalsonthebackofthesocket.IfallthreeLEDslightGREENandno
sound is emitted the wiring status is correct and you can proceed to the incoming
supplypolaritytest(step3).
Afaultwiththesocketwiringwillbeindicatedbyanaudiblealternatingtoneand
theLEDs,atleastoneofwhichwillberedororange,willash.Ifafaultindication
isgiven–DONOTPROCEED–investigationandremedialactionisrequiredbefore
you can conduct a loop test.
Ifthishappensplacingyourthumbonthegreycolouredpolaritytestpadwillnow
activatethe‘faultlocation’function.Withyourthumbrmlyonthepadcheckthe
indicationgivenbytheLEDsagainstthechartonthebackcovertoidentifywhere
themainproblemlies.
Note: ThecolouroftheLEDsmaychangewhenthepadistouched.
3 IncomingsupplyPolarityTest–thisimportanttestisdiscussedinfullon
page3ofthismanual,pleaseread.
ToconductthetestwithallthreeLEDslitGREENplaceyourthumbonthegrey
colouredpolaritytestpadarea.Ifthesupplypolarityiscorrecttherewillbeno
changeinindicationandyoucanproceedtostep4.Ifthesupplypolarityhasbeen
reversedthethreeLEDswillturnredandash.
Ifthishappensstoptestingandnotifythesupplycompanyimmediately.
4 Checkthatthemainsvoltageisinthecorrectrange207–253VAC.
Note: Alltestsareinhibiteduntilthemainsvoltageappearsinthedisplay.
5 NO-TRIP Yourtesterdefaultstono-triplooptestingwhenyourstswitchon–
buttonvere-selectsno-triplooptestifyouhaveselectedotherfunctions.
6 TEST Abriefpressofthetestbuttonwillinitiatethelooptestandafterafew
secondstheresultwillbedisplayed(Important:seenotesonpage4).
TheKTD40alsohasaHANDSFREEtestfunctionthatisactivatedbypressingthe
testbuttonbeforeconnectingtothemainssupply.Thisisveryusefulfortestingat
luminairesorsimilarconnectingstripswhenyourhandsareoccupiedbyholding
thetestprobes.