METREL EurotestXE, Instruction Manual

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MI 3102(H) BT Eurotest XE Measurements
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Loop resistance is indicative and calculated from Uc result (without additional proportional
factors) according to:
N
C
L
I
U
R


.
Figure 5.21: Example of contact voltage measurement results
Displayed results:
Uc ........ contact voltage
Rl ......... fault loop resistance
5.5.2 Trip-out time (RCDt)
Trip-out time measurement verifies the sensitivity of the RCD at different residual currents.
Trip-out time measurement procedure

Select the RCD function using the function selector keys.

Set sub-function to RCDt using UP / DOWN keys.

Set test parameters (if necessary).

Connect test cable to the instrument.

Connect test leads to the item to be tested (see Figure 5.20 ).

Press the TEST key to perform the measurement.

Store the result by pressing the MEM key (optional).
Figure 5.22: Example of trip-out time measurement results
Displayed results:
t ............ trip-out time
Uc ........ contact voltage for rated I

N