Chauvin Arnoux C.A 6115N, User Manual

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5.9.4 Performing a measurement
1. Connect the C.A 6115N according to the suggested
connection diagram with the cable with 3 separate leads.
Connect lead L
3
(white) the lead L
2
(yellow). The
measurement can be made between the earthing rod and
the different points of the ground circuit: earth terminals on
mains plugs, metal radiator housing or light fittings…
2. Turn the selector switch to the “LOW
Ω
“ function.
3. Press the “TEST” button to start a resistance measurement.
The positive pole of the voltage is on L
1
and ground on L
3
–
The indication is R1.
Hold the “TEST” button down to check whether R <
LIMIT, with immediate confirmation by audible beep.
4. Once the “TEST” button is released, the current is inverted.
R = (R
1
+ R
2
)/2 is displayed. R
1
and R
2
are visible by means of the MORE button. If R > LIMIT, an
audible warning beep sounds.
5. Save the measured values using the “MEM/MR” button, or print them out using the “PRINT” button.
To begin a new measurement, press the “TEST” button again.
To return to the display of the network voltage U
L-N
,turn the selector switch or press CHANGE or
SELECT.
To achieve very precise measurement of low resistances, lead compensation can be brought into effect.
(see 5.11.)
WARNING! Resistance can only be measured without voltage. This criteria is checked for to authorise
a test. If, for a measurement, a voltage > 300 V is applied by mistake, the protective
fuse blows. If this voltage is < 300 V, the instrument is protected without fuse.
5.9.5 Error indications
Display Meaning Comments
.
Measurement not possible
Voltage above 3 V AC/ DC
Parasite voltage on input
Measurement range exceeded Resistance above 1999
Ω
Measurement interrupted
Error – Restart. Lead compensation
exceeds the limit perhaps.
Error noted
If this problem persists, a factory
inspection is necessary.
Measurement impossible, Charge battery
Battery discharged see “Charging the battery”
L1
L2
L3
N
PE