CS 2099 Eurocheck
Eurocheck operation
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4.3 Selecting calibration function/sub-function
The following measurements can be selected with the RCD/LOOP function selection
button (see Figure 3.1). Appropriate LED lights when particular function/sub-function is
selected:
q
Fault loop and trip-lock impedance calibration (two impedance values available),
q
RCD trip-out time calibration and instrument test current verification.
The following measurements are not indicated with LEDs on front panel. Connect the
tested instrument to the outputs particular to each function:
q
Insulation resistance,
q
Low
Ω
and continuity resistance,
q
Voltage and frequency calibration,
q
Line impedance calibration,
q
Continuity and insulation of measurement leads verification,
q
PE test terminal operation verification.
Note
:
q
For descriptions of instrument measurement functions refer to its User manual.
4.4 Selecting appropriate test cable for calibration
Functions that use Eurocheck RCD/Fault loop calibration output can be calibrated using
universal test cable, plug cable or plug commander. Use test tips to connect universal
test cable into Eurocheck RCD/Fault loop calibration output:
q
Fault loop impedance,
q
Trip-lock impedance,
q
RCD trip-out time and instrument test current I
Δ
n,
q
Line impedance,
q
PE test terminal operation verification.
Measurement results should be the same, regardless of selected cable.
It is possible that the cause for incorrect calibration result is broken wire or deteriorated
insulation in measurement cable. Correctness of universal test cable wiring can be
easily verified, see chapter 4.13. If this cable passes verification, use it to perform
calibration of functions listed above. Write down measurement results. Then use other
type of cable and repeat calibration. Compare measurement results, they should be
close to each other.
Other functions can be calibrated with universal test cable and tip commander:
q
Insulation resistance,
q
Low
Ω
and continuity resistance,
q
Voltage and frequency,
q
Continuity and insulation of measurement leads verification.
For further information on how to use each cable type see User manual of your
instrument.