MI 2087 AL2 EasiTEST
Measurement instructions
13
3 Measurement instructions
3.1 Insulation resistance
There are different objects, where insulation resistance has to be measured in order
to assure safety against electric shock. Let’s list a few examples:
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insulation resistance between installation conductors (all combinations)
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insulation resistance of non-conductive rooms (walls and floors)
q
insulation resistance of ground cables
q
resistance of semiconductive (antistatic) floors
For additional general information concerning insulation resistance measurement refer
to enclosed handbook
Measurements on electric installations in teory and
practice.
Warnings:
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Make sure that tested object is deenergised (mains voltage disconnected),
before starting the measurement!
q
When measuring insulation resistance between conductors, all loads must be
disconnected and all switches closed!
q
Do not touch tested object while testing it, risk of electric shock!
q
Do not connect test terminals to external voltage higher than 600V (AC or DC),
to prevent damage to the test instrument!
q
In case of capacitive test object (capacitive compensation of reactive power,
long tested cable, etc.), automatic discharge of the object may not be done
immediately after finishing the measurement. Decreasing voltage will be
displayed in that case – do not disconnect test leads until the voltage drops
below 50V or carefully discharge the tested object manually!
How to carry out the measurement
Step 1
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Connect test cable (Universal test cable or Tip Commander) to EasiTest.
q
Set function switch to
INSULATION
position, the following menu will be
displayed:
Fig. 4:
Insulation resistance initial menu
