AEMC DTR 8510 User Manual

34 Digital Transformer Ratiometer DTR
®
Model 8510
1. Connect the Primary (H) cable to the appropriate connectors on
theDTR
®
Model8510and thetransformerundertest.Connect the
Secondary(X)cableasaloopthroughthecurrenttransformerholeas
showninthegure.
X BLACK
H RED
X RED
H BLACK
X2 X1
Figure 5-7
2. PresstheTESTbutton.DuringtheRatiotest,theinstrumentwill
checkforH/Xreversepolarity,short(excessivecurrent)etc.before
conductingRatiotest.
NOTE:
• IftheH/Xisreversed,theinstrumentwilldisplaytheerror
message(seeFig.5-5)asinVT/PTtestandterminatethetest.
• Iftherewereapolarityreversal,theRatiowouldbeblinkingwith
anegativesign.Thismeanseithertheconnectionsarereversed
onagivensideorthetransformeriswoundbackwardsrelative
tothemarking.
• ThetestcanbecancelledatanytimebypressingtheTEST
buttonduringtheoperation.
• TheCTtestrampsupthevoltageinsteps.Attheendofthetest,
itrampsdownthevoltage.
• Therearecertainlowmass,lowratioCT’sforwhichtheDTR
®
8510maynotbeabletoprovidecorrectratio.Theerrormessage
willbe“HighExcitationCurrent”.
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AEMC DTR 8510 Specifications

General

Brand	AEMC
Model	DTR 8510
Category	Measuring Instruments
Language	English