HT instruments MACROTEST 5035 - Manual (Page 46)

MACROTEST 5035
EN - 45
If under P-PE mode the instrument
caries out the test and detects a
global
earth resistance to higher than
1999
Ω, the screen alongside is
displayed for 5 seconds then the initial
display is back.
RCD LOOP
o >
1999
Ω
P-PE
31
V
0
A
SAVING: The tests can be stored pressing the SAVE key twice
(according to paragraph 5.1).
4.6. EARTH
ρ: EARTH RESISTANCE AND RESISTIVITY MEASUREMENTS
Turn the switch on EARTH ρ position.
Switch on the instrument.
The key
FUNC permits to select one of the following measuring modes
(which can be shown cyclically when pressing the key):
Mode “ 2P” (the instrument measures earth resistance between 2 points).
Mode “ 3P” (the instrument measures earth resistance using two auxiliary
earth rods).
Mode “
ρ“ (the instrument measures earth resistivity).
The resistance is measured with a 4-cables voltamperometric method, so the value
measured is not depending on the utilized cables. For this reason this method doesn’t
need any cables calibration.
If the cables weren’t long enough, lengthen them or utilize cables longer than the standard
ones. Pay attention to always lengthen each cable separate from each one other.
Message
">1999": the
instrument
detects an earth
resistance higher
than 1999
Ω.
Value of contact voltage U
t
detected referred to
the carried out value of the RCD current set.
Resolution 1V.
SAVE
FUNC