Installation Guide

DRAFT DGA-LT1 Installation Guide

SystemDescription

TheDGA‐LT1providesareliablemeansofmonitoringgas(e.g.,hydrogen)concentration,temperature,and

moistureconcentrationinthedielectricinsulatingoilofelectricalequipmentatalowercostthantypical

devicesandalsoavoidstheadditionalmaterialandlabourcostsrelatingtoinstallationofpowerand

communicationscables.Thewireless

sensorisbatterypoweredandtransmitsdatawithouttheneedfor

additionalpowerorcommunicationswires,cablesorconduits.

Awebbasedcomputerapplication,providesamonitoringdashboardandnotificationsystemtoensurethat

electricalassetsincludingtransformersacrossawidegeographicalareacanbequicklyreviewedtoidentify

transformers

showingtrendsofincreasingriskoffailurewhilealsoreceivingautomatednotificationsbasedon

alertthresholds.

Thewirelessdissolvedgasanalyzerconfiguredforeasyconnectiontotransformersandotherelectrical

equipmenthavinginsulatingoilandincludessensorsformeasuringhydrogengaslevels,temperature,and

moisture.Asillustratedanddiscussedfurtherbelow,

theanalyzerthreadsintodrainvalveofthetransformer.

Thesensorincludesanopenbodythatisexposedtotheoilandhasahydrogensensitivechemochromic

assemblyintheopenbody.Thecolorofthechemochromicassemblychangeswhenexposedtohydrogen.

Additionally,theanalyzerincludessensorsthatdetect

thetemperatureandmoistureconcentrationinthe

bodyoftheelectricalequipment.

Theanalyzerfurtherincludesacolorsensorthatmeasuresthecolorofthechemochromicassemblydueto

changesinthehydrogenconcentrationintheinsulatingoil.Theanalyzersendtheencryptedcolor,

temperature,andmoisturemeasurementsthroughacommunications

networktoremotemonitoring

equipment,suchasacomputerserver.

Warranty

QualitrolwarrantsitsGoodstobefreefromlatentdefectsinmaterialsorworkmanshipforthedurationofthe

monitoringcontractinitiatedatthedateofshipment.Additionaldetailsontermsandconditionsareprovided

inthesignedagreement.

OperatingEnvironment

TheDGA‐LT1isdesignedtooperatewithinthefollowingoutdoorconditions:

 AltitudeRange‐2000to5,000ft.

 HumidityRange5%to95%

 AmbientTemperatureRange‐40°Cto+65°C

 OilInletPressure‐20psigto20psig

 OilInletTemperature‐40°Cto+105°C(temperatureatdrain

valve)

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