HT instruments EQUITEST5071 - Manual (Page 11)

EQUITEST 5071
EN - 9
6. OPERATING INSTRUCTIONS
6.1. LOW
:
CONTINUITY OF PROTECTIVE CONDUCTORS WITH 200mA
Measurement is carried out in compliance with standard IEC/EN61557-4.
CAUTION
Before carrying out the continuity test, make sure there is no voltage at the
ends of the conductor to be analyzed.
Turn the rotary switch to LOW
.
With the F1 key it is possible to select one of the following measuring modes
(which cyclically appear when pressing the key):
 “AUTO” mode (the instrument carries out two measurements with
inverted polarity and displays their average value). Recommended mode
for continuity test
 “RT+” mode (measurement with positive polarity and with the possibility
of setting a duration time for testing). In this case, the operator may set a
sufficiently long measuring time to be able to move the protective
conductors while the instrument is carrying out the test, in order to find
out a possible bad connection.
 “RT-” mode (measurement with negative polarity and with the possibility
of setting a duration time for testing). In this case, the operator may set a
sufficiently long measuring time to be able to move the protective
conductors while the instrument is carrying out the test, in order to find
out a possible bad connection.
With the F2 key it is possible to select the “CAL“ mode (compensation of the
resistance of the cables used for measuring).
CAUTION
Continuity test is carried out by applying a current higher than 200mA in
case resistance does not exceed 5
 (including the measuring cables’
resistance saved as offset value in the instrument after carrying out the
calibration procedure). For higher resistance values, the instrument carries
out the test with a current lower than 200mA.