MI 3102(H) BT
Eurotest
XE
Safety and operational considerations
10
Before starting any power measurement the current clamp settings in
Settings menu
should be checked. Select appropriate current clamp model and measuring range that
are best fitted to the expected current values.
Consider polarity of current clamp (arrow on test clamp should be oriented toward
connected load), otherwise result will be negative!
Illumination
For accurate measurement make sure that the milk glass bulb is lit without any shadows
cast by hand, body or other unwanted objects.
It is very important to know that the artificial light sources reach full power of operation
after a period of time (see technical data for light sources) and should be therefore
switched on for this period of time before the measurements are taken.
Testing PE terminal
PE terminal can be tested in RCD, LOOP and LINE function selector positions only!
For correct testing of PE terminal, the TEST key has to be touched for a few seconds.
Make sure to stand on non-isolated floor while carrying out the test, otherwise test result
may be wrong!
PE conductor resistance
The specified accuracy of tested parameters is valid only if the mains voltage is stable
during the measurement.
PE conductor resistance measurement will trip an RCD.
The measurement of PE conductor resistance using trip-lock function does not normally
trip an RCD. However, the trip limit may be exceeded if a leakage current flows to the
PE protective conductor or if there is a capacitive connection between L and PE
conductors.
Testing of Insulation monitoring devices (IMD)
(MI 3102 BT only)
It is recommended to disconnect all appliances from the tested supply to receive regular
test results. Any connected appliance will influence the insulation resistance threshold
test.
The displayed resistances and currents are indicative only. Displayed resistance can
significantly differ from the actual resistance the Eurotest simulates. If IMD’s with very
low test currents (below 1mA) are checked the displayed resistance value is typically
lower (and current higher) than the actual simulated resistance. The difference is lower
for lower set resistances.
Auto-sequence tests
See notes related to tests / measurements of selected auto-sequence.
