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MI 3152(H) EurotestXC (2,5 kV)
Figure 7.12: Connection of 2.5 kV test lead (U
Measurement procedure
Enter the Diagnostic test function.
Set test parameters / limits.
Disconnect tested installation from mains supply and discharge installation as required.
Connect test cable to the instrument.
Connect test leads to object under test (see Figure 7.11 and Figure 7.12).
Different test cable must be used for testing with nominal test voltage U
U
= 2500 V. Also different test terminals are used.
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The standard 3-wire test lead, Schuko test cable or Plug / Tip commanders can be used
for the insulation test with nominal test voltages ≤ 1000 V. For the 2500 V insulation test
the two wire 2.5 kV test lead should be used.
Start the measurement. Internal timer begins to increment. When internal timer reaches
1 min R60 and DAR factor are displayed and short beep is generated. Measurement
can be interrupted at any time.
When internal timer reaches 10 min also PI factor is displayed and measurement is
completed. Wait until object under test is fully discharged.
After the measurement is finished wait until tested item is fully discharged.
Save results (optional).
Measurement results / sub-results
Riso
Insulation resistance
Um
Actual test voltage
R60
Resistance after 60 seconds
DAR
Dielectric absorption ratio
PI
Polarization index
Figure 7.13: Examples of Diagnostic test result
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96
Tests and measurements
= 2.5 kV)
≤ 1000 V and
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