KYORITSU 4116A - Page 8

― 6 ―
3.3-3Model4116A,4118Aand4120Ahavethefollowingfeatures:
● Batteryisnotused Allmodelsarenotbattery-operated,butoperateby
thevoltagesuppliedfromthesystem.
● Wiringcheck ThreeLEDsindicateifthewiringofthecircuit
undertestiscorrect.TheP-EandP-NLEDs
illuminatewhenthe wiringpolarityof thecircuit
undertestiscorrect.
TheReverseLEDislitwhenPandNare
reversed.
● Overtemperature Detectsoverheatingoftheinternalresistor
displayingawarningsymbol()andautomatically
haltingfurthermeasurements.
● Overloadprotection Haltsmeasurementtopreventdamages tothe
bodywhenvoltagebetweenVL-PEis260Vor
more.
"VL-PEHi"isshownonthedisplay.
● D-LOKcircuit Model4120AwithuniqueD-LOKcircuitavoidsthe
needtoby-passmostRCD's.
● 15mALoop Loopimpedance 2000Ω rangemeasurement is
carriedoutwithlowtestcurrent(15mA).The
currentwill notcause tripping outinvolved RCD
eventhe one with the lowest nominaldifferential
current(30mA).
● Display Theliquid crystaldisplay has 31/2 digits witha
decimalpoint andunits ofmeasurement (Ω,A,
kA,V).
● ManualandAutotestmode
Manual − Pressandreleasethe"PresstoTest"button.Theresultwillbe
displayedfor3sandthenthedisplaywillreverttoACvoltage.
Autotest− The"PresstoTest"buttoncanbeturnedclockwisetolockit
down.Inthis automode,when usingdistribution boardlead
M-7121,tests areconducted bysimply disconnectingand
reconnectingtheredphaseprodoftheM-7121avoidingthe
needtophysicallypressthetestbuttoni.e."handsfree".
protection
 
measurement
CAUTION
● TheD-LOK circuits maynot by-passsome RCD's andthis will
resultintheRCDtrippingoutastheywoulddowithaconventional
looptester. Also,in the caseof high sensitivityRCD's ratedat
10mAorlesstheD-LOKcircuitsmaynotfunction.