D) Continuity Check; E) Insulation Test With Auxiliary Supply - VOLTCRAFT ET-100 Operating Instructions Manual

d) Continuitycheck
 M akesurethatallcircuitparts,circuits,componentsandanyothertestobjectsarecurrentless
and discharged.
- Switch on the measuring device and select measuring range
- Carry out the measurement as described for resistance measurement. A measured value of less than 35 ohms is
identified as continuity and accompanied by a beep. The continuity check symbol is displayed.
- After measuring, remove the measuring lines from the test object and switch off the measuring device.

e) Insulation test with auxiliary supply

Makesurethatallcircuitparts,circuits,componentsandanyothertestobjectsarecurrentlessand
discharged.Ifthemeasuringdevicerecognisesavoltageof≥30V/DCor≥30V/ACinthemeasur-
ingcircuit,noinsulationtestispossible.Alwaysmeasurethevoltage(AC+DC)beforetestingthe
insulation.
  D uringinsulationtests,dangerousvoltagescanbepresentatthetestprods.Alightningsymbol
on the display warns of such voltages. The voltage is also present in all connected circuits and
conductors.Donottouchanycircuitsorcomponentswhenmeasuringtheinsulation.
  O nlytouchwithinthetangiblegripmarkingsonthetestprodsortheinsulatedalligatorclip.
The insulation test allows measuring the insulation resistance of safety-related
protective measures with an adjustable auxiliary supply. Faulty or insufficient insula-
tion can be detected. The required insulation resistances can be gathered from the
respective standards.
- S witch on the measuring device and select the "4000 MΩ" measuring range and
the corresponding auxiliary supply.
- Plug the red measuring line into the "V" measuring socket (10) and the black
measuring line into the COM measuring socket (11). You can use the provided
alligator clip to carry out a one-hand measurement.
- The display shows the unit "MΩ".
- Connect the two test prods (red = positive/black = negative) with the test object.
The measuring line with the alligator clip makes handling easier during measure-
ments.
   W henmeasuring,abeepalongwithaflashinglightningsymbolwarnsoftestvoltagepresentin
themeasuringlines.
  I favoltageofmorethan30V(AC/DC)hasbeendetected,notestiscarriedoutand">30V"is
displayedalongwiththevoltagetype(ACorDC).Thisisindicatedbyawarningsound.Stopmeas-
uringimmediatelyanddisconnectthemeasuringcircuit,anycomponentsandthedevicefromthe
power supply.
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