Kewtech KTD40 User Manual

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Caution
Before using your KTD40 please read these instructions; in particular note the safety
issues that follow:
• Althoughfullyprotectedupto440VACthistesterisforuseon230VACcircuits
only.
• Alwayscheckthetesteronaknown,correctlywired,livesocketoutletbeforeand
after use.
• Beforeusecheckyourtesterforanydamagetotheplug,leadandcabinet.
Important calibration/check box note
• BecauseoftheSuperSmartLoopTestSystemthetestisimmunetosuddenvalue
changes(suchasvoltagespikes).
• Asaresultwhenchangingcalibrationorcheckboxloopvaluestheunitmustbe
switchedoffbetweenchanges.
BSEN61010-1
AtKewtechourengineersconstantlylookforimprovement.Ifthereisanyaspectof
yourKewtechtesteryouwouldliketocommentonpleasevisitourwebsiteat
Kewtechcorp.com
Operation Overview
Your Kewtech tester has a special polarity test function.
ItisalittleknownfactthatasystemcanbereversewiredwithLine(Phase)toearth/
neutralandearth/neutraltoLine(Phase).Thesocketswillallworkandconventionalloop
testerswillshowandtestthateverythingiscorrectdespitethisverydangerouswiring
condition.
Althoughextremelyrare,thismiswireconditioncanexistsoifyourtestshowsthisfault
donotproceed–ifinanydoubtadviseyourcustomertocontacttheirsupplycompany
immediately.(Seeteststep 3,page9)
CORRECT POLARITY
Correct polarity
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Operation overview
Your Socket & See tester has a special polarity test function.
It is a little known fact that a system can be reverse wired with Live (Phase) to
earth/neutral and earth/neutral to Live (Phase) The sockets will all work and
conventional loop testers will show and test that everything is correct despite
this very dangerous wiring condition.
Although extremely rare, this miswire condition can exist so if your test shows
this fault do not proceed – if in any doubt advise your customer to contact their
supply company immediately. (See test step 3, page 9)
FUSE 100A
From supply
company
LIVE (Phase)
NEUTRAL
Ty pical supply service
cut-out fuse
Live (Phase)
to meter
Neutral to meter
To main earthing
terminal
Solid brass
connecting block
FUSE 100A
From supply
company
NEUTRAL
LIVE (Phase)
Ty pical supply service
cut-out fuse
Neutral to meter
Live (Phase)
to meter
To main earthing
terminal
Solid brass
connecting block
REVERSE POLARITY
REVERSE POLARITY
LINE (Phase)
LINE (Phase)
NEUTRAL
NEUTRAL
LINE (Phase)
to meter
LINE (Phase)
to meter
To main earthing
terminal
Neutral to meter
To main earthing
terminal
The Kewtech KTD40 Loop Impedence Tester is designed for use by suitably
qualified personnel familiar with electrical supply systems.

Kewtech KTD40 Specifications

General

Brand	Kewtech
Model	KTD40
Category	Measuring Instruments
Language	English