Installation Guide

DRAFT DGA-LT1 Installation Guide
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ProductOverview
TheDGA‐LT1isaremotely‐deployedtransformermonitorwhi chcanbesafelyinstalledontoanenergizedor
non‐energizedtransformertodetectandmeasuredissolvedhydrogenfoundinanelectricalpower
transformer‘sinsulatingoil.Themonitorisdesignedandconstructedtooperateinenvironmentalconditions
inPowerPlants,Switchyardsor
Substations.
TheDGA‐LT1isdirectlymountedtoanexistingvalveonthetransformerandcirculatestransformeroilwithin
ittoprovideacontinuousreadingofhydrogeninppm.DatacanbeviewedintheQualConnex®web
applicationtotrackthehydrogenppmlevelsovertimeandcompareagainstuser‐
definedcautionandalarm
settings.
TheDGA‐LT1isabatterypoweredwirelesssensorthattransmitsencryptedrawsignalsviaRFfrequencytothe
QGatewaythatareusedforcalculatinghydrogenconcentration,moistureconcentrationandtemperature.
TheDGA‐LT1measureshydrogen(H
2
)withoutcross‐interferencefromothergases.Hydrogenisformedunder
allknownthermalfaultconditionsinthetransformerandisoneofthefirstgasestobegenerated,makingit
anexcellentearlyindicatorofabroadrangeoffaulttypes.
TheDGA‐LT1isdesignedtobeinstalledand
configuredbytheend‐user.Configurationofthemonitor’salarms,
settingsandoptionsisaccomplishedusingtheQualConnexwebinterface.
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