Chauvin Arnoux C.A 6116N User manual

C.A6116N
C.A 6117
INSTALLATION TESTER
ENGLISH User's manual

2
WARNING, risk of DANGER! The operator must refer to these instructions whenever this danger symbol appears.
Useful information or tip. Current clamp.
USB socket. Auxiliary rod.
The voltage on the terminals must not exceed 550 V. Equipment protected by double insulation.
The product is declared recyclable following a life cycle analysis in accordance with standard ISO 14040.
The CE marking indicates conformity with European LVD and EMC directives.
Chauvin Arnoux has adopted an Eco-Design approach in order to design this appliance. Analysis of the complete
lifecycle has enabled us to control and optimize the effects of the product on the environment. In particular this appli-
ance exceeds regulation requirements with respect to recycling and reuse.
The rubbish bin with a line through it means that in the European Union, the product must undergo selective disposal
in compliance with Directive WEEE 2002/96/EC.
Denition of measurement categories:
Measurement category IV corresponds to measurements taken at the source of low-voltage installations.
Example: power feeders, counters and protection devices.
Measurement category III corresponds to measurements on building installations.
Example: distribution panel, circuit-breakers, machines or xed industrial devices.
Measurement category II corresponds to measurements taken on circuits directly connected to low-voltage installations.
Example: power supply to electro-domestic devices and portable tools.
PRECAUTIONS FOR USE
This device is protected against accidental voltages of not more than 600V with respect to earth in measurement category III or
300VwithrespecttoearthinmeasurementcategoryIV(undershelter).Theprotectionprovidedbythedevicemaybecompromised
if it is used other than as specied by the manufacturer.
Do not exceed the maximum rated voltage and current and the measurement category.
Never exceed the protection limits indicated in the specications.
Complywiththeconditionsofuse,namely the temperature, thehumidity, the altitude,thedegreeof pollution, andtheplaceof use.
Do not use the device or its accessories if they seem damaged.
Do not use the device if the battery compartment cover is missing or incorrectly installed.
To recharge the battery, use only the mains adapter unit provided with the device.
To replace the battery, disconnect everything connected to the device and set the switch to OFF.
Do not use a battery with a damaged jacket.
Use connection accessories of which the overvoltage category and service voltage are greater than or equal to those of the
measuring device (600 V Cat. III or 300 V Cat. IV).
Troubleshooting and metrological checks must be done only by accredited skilled personnel.
Wear the appropriate protective gear.
Thank you for purchasing a C.A 6116N or C.A 6117 installation tester. To obtain the best service from your unit:
read this user manual carefully,
comply with the precautions for use.

3
CONTENTS
1. FIRST START-UP ..................................................................................................................................................................4
1.1. Unpacking....................................................................................................................................................................4
1.2. Charging the battery....................................................................................................................................................5
1.3. Carrying the device......................................................................................................................................................5
1.4. Use on a desktop.........................................................................................................................................................6
1.5. Brightness of the display .............................................................................................................................................6
1.6. Choice of language......................................................................................................................................................7
2. PRESENTATION OF THE DEVICES.....................................................................................................................................8
2.1. Functions of the devices .............................................................................................................................................9
2.2. Keypad ........................................................................................................................................................................9
2.3. Display unit................................................................................................................................................................10
2.4. USB port....................................................................................................................................................................10
3. USE......................................................................................................................................................................................11
3.1. General......................................................................................................................................................................11
3.2. Voltage measurement................................................................................................................................................11
3.3. Resistance and continuity measurement...................................................................................................................13
3.4. Insulation resistance measurement...........................................................................................................................17
3.5. 3P earth resistance measurement.............................................................................................................................20
3.6. Loop impedance measurement (ZS)..........................................................................................................................24
3.7. Earth measurement on live circuit (Za, Ra).................................................................................................................28
3.8. Selective earth measurement on live circuit..............................................................................................................33
3.9. Measurement of the line impedance (Zi)...................................................................................................................36
3.10. Measurement of the voltage drop in the cables (DV)...............................................................................................40
3.11. Test of residual current device.................................................................................................................................43
3.12. Current and leakage current measurement.............................................................................................................51
3.13. Direction of phase rotation.......................................................................................................................................53
3.14. Power measurement ...............................................................................................................................................55
3.15. Harmonics ...............................................................................................................................................................58
3.16. Compensation for the resistance of the measurement leads..................................................................................61
3.17. Adjustment of the alarm threshold...........................................................................................................................63
4. ERROR INDICATION...........................................................................................................................................................64
4.1. No connection............................................................................................................................................................65
4.2. Out of measurement range........................................................................................................................................65
4.3. Presence of dangerous voltage.................................................................................................................................65
4.4. Invalid measurement.................................................................................................................................................65
4.5. Device too hot............................................................................................................................................................65
4.6. Check of internal protection devices..........................................................................................................................66
5. SET-UP.................................................................................................................................................................................67
6. MEMORY FUNCTION..........................................................................................................................................................70
6.1. Choice of mode .........................................................................................................................................................70
6.2. Tree mode .................................................................................................................................................................71
6.3. Table mode................................................................................................................................................................76
7. DATA EXPORT SOFTWARE...............................................................................................................................................81
8. TECHNICAL CHARACTERISTICS .....................................................................................................................................82
8.1. General reference conditions ....................................................................................................................................82
8.2. Electrical characteristics............................................................................................................................................82
8.3. Variations in the range of use....................................................................................................................................93
8.4. Intrinsic uncertainty and operating uncertainty..........................................................................................................96
8.5. Power supply.............................................................................................................................................................96
8.6. Environmental conditions ..........................................................................................................................................98
8.7. Mechanical characteristics .......................................................................................................................................98
8.8. Conformity to international standards........................................................................................................................98
8.9. Electromagnetic compatibility (EMC).........................................................................................................................98
9. DEFINITIONS OF SYMBOLS..............................................................................................................................................99
10. MAINTENANCE...............................................................................................................................................................101
10.1. Cleaning ................................................................................................................................................................101
10.2. Replacing the battery.............................................................................................................................................101
10.3. Resetting the device..............................................................................................................................................102
10.4. Updating of the internal software...........................................................................................................................102
11. WARRANTY ....................................................................................................................................................................103
12. TO ORDER.......................................................................................................................................................................104
12.1. Accessories ...........................................................................................................................................................104
12.2. Replacement parts ................................................................................................................................................104
13. APPENDIX .......................................................................................................................................................................106
13.1. Table of fuses managed by the C.A 6117..............................................................................................................106

4
1. FIRST START-UP
1.1. UNPACKING
1One C.A 6116N or C.A6117.
2One mains charger with cable for the battery.
3Data export software on CD-ROM and a USB A/B cord.
4One tripod cable with mains plug (adapted to the country of sale.
5One tripod cable, 3 safety leads.
6Three probe tips (red, blue, and green).
7Three crocodile clips (red, blue, and green).
8Two elbowed-straight safety leads (red and black).
9One 4-point hands-free strap.
10 One hand strap.
11 One remote probe.
12 One carrying bag.
13 One user manuals on CD-ROM (1 le per language).
14 One multilingual safety sheet.
➀
➅
➄
➃
➁
➂
➆
➇
➈
➉
11
12
14
13

5
Set the switch to OFF, but charging is possible when the device is not off.
1.3. CARRYING THE DEVICE
> 90 VAC
< 264 VAC
50 / 60 Hz
Charging time:
approximately 5h.
The indicator of the
device lights.
Battery
loading...
Loading
completed.
The indicator goes
off.
1.2. CHARGING THE BATTERY
Before the rst use, start by fully charging the battery. The charging must be done between 0 and 45°C.
Adjust the length of the strap,
then the tilt of the device.
The 4-point hands-free strap will let you use the device while leaving your
hands free. Snap the four fasteners of the strap onto the four lugs on the
device.
Pass the strap around your neck.
Remove the cover from the mains connector on
the device.

6
To withdraw the strap, slide a at screwdriver under the tab of the fastener to lift it, then slide the fastener down.



+
1.5. BRIGHTNESS OF THE DISPLAY
To adjust the brightness of the display, press the key and one of the arrow keys simultaneously.
sustained
press
or
1.4. USE ON A DESKTOP
For use on a desktop, have the device rest on the fasteners of the hand strap and on the housing.
This lets the display unit be read directly.

7
SET UP
OFF
1.6. CHOICE OF LANGUAGE
Before using the device, rst choose the language in which you want the device to display messages.
Set the switch to SET-UP.
OK
Use the directional keypad to select the languages icon:

OK
Press the OK key to validate your
choice.
Select your language, from among those proposed, using the  keys and validate by pressing the OK key again.
You can download other languages from our site’s support space (see §10.4).

8
2. PRESENTATION OF THE DEVICES
SET UP
OFF
OK
/
TEST

Four function
keys.
TEST button to start
the measurements.
Connection terminals.
Switch for selection
of the measurement
function or SETUP.
Stud for xing on the
4-point hands-free
strap. Help key. Brightness adjustment key.
Directional keypad:
four navigation keys
and one validation
key.
Indicator light.
USB port for data
transfer to a PC. Battery charging
connector.
Fasteners for the hand
strap, also used to tilt
the device.

9
2.1. FUNCTIONS OF THE DEVICES
C.A6116N and C.A 6117 installation testers are portable measuring devices with a colour graphic display. They are powered by a
rechargeable battery with a built-in charger and external power supply unit.
These instruments are intended to check the safety of electrical installations. It can be used to test a new installation before it is
powered up, to check an existing installation, whether in operation or not, or to diagnose a malfunction in an installation.
Measurement
functions voltage measurement
continuity and resistance measurement
insulation resistance measurement
earth resistance measurement (with 3 rods)
loop impedance measurement (Zs)
earth resistance on live circuit measurement (with an auxiliary probe)
selective earth resistance measurement (with an auxiliary probe and an optional current clamp)
calculation of the short-circuit current and of the fault voltages
line impedance measurement (Zi)
measurement of the voltage drop in the cables (for the C.A 6117 only)
test of type AC, A , F, B, B+ and EV residual current devices, in ramp mode, in pulse mode, or in
non-tripping mode (types B, B+ and EV with the C.A 6117 only)
current measurement (with an optional current clamp)
detection of direction of phase rotation
active power and power factor measurement (single-phase or balanced three-phase network) with
display of the voltage and/or current curves
voltage and current harmonic analysis (with an optional clamp)
Controls one thirteen-position switch, one ve-key navigator, one keypad with four function keys, one context-
sensitive help key, one brightness key, and one TEST button.
Display 5.7” (115 x 86mm) colour graphic display unit, 1/4 VGA (320 x 240 points).
The only difference between the C.A6116N and the C.A 6117 is that the C.A 6117 can test type B RCDs.
2.2. KEYPAD
The actions of the 4 function keys are indicated on the display unit by adjacent icons. They depend on the context.
The help key can be used in all functions. The help function is context-sensitive: it depends on the function.
The key is used to adjust the brightness of the display.
The directional keypad comprises four navigation keys and one validation key.

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2.3. DISPLAY UNIT
LOOP ZS
11-21-2013 10:47 50 . 0 Ω50 . 1 Hz
L-PE 230.3V
L-N 230.4V
N-PE 0.8V
6 mA
L
6 %
1Top strip 7Position of the phase on the socket outlet
2Date and time 8Display of measurement results
3Alarm threshold 9Bottom strip
4Frequency measured 10 Name of function
5Condition of the battery 11 Information about the measurement in progress
6Icons representing the functions of the keys
2.4. USB PORT
The USB port of the device is used to transfer the stored data to a PC (see §7). This operation requires the prior installation of a
specic peripheral driver and other software.
The USB port can also be used to update the device’s internal software (see §10.4).
The USB cord and the associated software are supplied with the device.
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➉
➅
➀
➁➂
➆
➄
➃
➇
➈

11
3. USE
3.1. GENERAL
When it leaves the plant, the device is congured so that it can be used without changing the parameters. For most meas-
urements, simply select the measurement function by turning the switch and press the TEST button.
However, you can also parameterize:
the measurements, using the function keys,
or the device itself, using SET-UP.
The device is not designed to operate when the charger is connected. The measurements must be made using battery
power.
3.1.1. CONFIGURATION
When conguring the measurements, you can always choose between:
validating by pressing the OK key,
or exiting without saving by pressing the key.
3.1.2. HELP
In addition to an intuitive interface, the instrument provides complete help in use and analyses and appraisals. Three types of help
function are available:
Help before the measurement can be accessed using the key. It indicates the connections to be made for each function
and important recommendations.
Error messages appear, as soon as the TEST button is pressed, to report connection errors, measurement parameterizing
errors, out-of-range values, defective installations tested, etc.
Help associated with the error messages. Messages containing the icon invite you to look up the help for ways to elimi-
nate the error found.
3.1.3. REFERENCE POTENTIAL
The user is assumed to be at the reference earth potential. He/she must therefore not be insulated from earth: must not
wear insulating shoes or insulating gloves and must not use a plastic object to press the TEST button.
3.2. VOLTAGE MEASUREMENT
Whichever function is chosen, except for SET-UP, the device always starts by measuring the voltage present on its terminals.
3.2.1. DESCRIPTION OF THE MEASUREMENT PRINCIPLE
The device separates the alternating voltage from the direct voltage and compares the amplitudes to decide whether the signal
is AC or DC. In the case of an AC signal, the frequency is measured and the device calculates the RMS value of the AC part and
displays it. In the case of a DC signal, the device does not measure its frequency, but calculates its mean value and displays it.
For measurements made at the mains voltage, the device checks that the connection is correct and displays the position of the
phase on the socket outlet. It also checks the presence of a protective conductor on the PE terminal by means of the contact the
user makes with his/her nger by touching the TEST button.

12
3.2.2. MAKING A MEASUREMENT
Connect the lead to the device to be tested.As soon as the device is powered up, it measures the voltages present on its terminals
and displays them, whatever the setting of the switch.
/
In the ZS(RA/SEL.) and RCD, settings, the device also indicates the position of the phase on the display unit using the symbol.
The mains socket outlet of the measuring cable is marked with a white reference spot.
: the phase is on the right-hand contact of the mains plug when the white spot is up.
: the phase is on the left-hand contact of the mains plug when the white spot is up.
: the device cannot determine where the position of the phase, probably because the PE is not connected or the L and PE
conductors are interchanged.
The L symbol is displayed as soon as the voltage is high enough (> ULprogrammable in SET-UP). The terminal identied
as L is the one that has the highest voltage with respect to PE.
3.2.3. ERROR INDICATION
The only errors reported in voltage measurement are values outside the voltage measurement range. These errors are reported
in clear language on screen.

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Choice of measurement current: kW, 12 mA or 200 mA.
The high current (200 mA) can be used only to measure low resistances, up to 40 W.
The low current (12 mA) is used to make measurements up to 400 W.
The choice kWis used to make resistance measurements up to 400 kW.
SET UP
OFF
/
R
200mA
To correct for the resistance of the measurement leads (leads and probe tips or crocodile clips), for measurements
at 12 and 200 mA (see §3.16).
Pressing the TEST button starts only one measurement (pulse mode).
Set the switch to W .Use the leads to connect the device to be tested between the Wand COM termi-
nals of the device. The object to be tested must not be live.
Pressing the TEST button starts the continuous measurement (permanent mode). To
stop it, you must press the TEST button again.
3.3.3. CONFIGURING THE MEASUREMENT
Before starting the measurement, you can congure it by modifying the parameters displayed:
3.3. RESISTANCE AND CONTINUITY MEASUREMENT
3.3.1. DESCRIPTION OF THE MEASUREMENT PRINCIPLE
For continuity measurements, the device generates a DC current of 200 or 12 mA, at the user’s discretion, between the Wand
COM terminals. It then measures the voltage present between these two terminals and from it deduces the value of R = V/I.
For resistance measurements (current chosen = kW), the device generates a DC voltage between the Wand COM terminals. It
then measures the current between these two terminals and from it deduces the value of R = V/I.
In the case of a measurement at high current (200 mA), at the end of one second, the device reverses the direction of the current
and makes another measurement for one second. The result displayed is the mean of these two measurements. It is possible to
make measurements with either the positive or the negative polarity of the current disabled.
For measurements at low current (12 mA or kW), the polarity is positive only.
3.3.2. MAKING A MEASUREMENT
To comply with standard IEC-61557, the measurements must be made at 200 mA.Thereversal of the current serves tocompensate
for any residual electromotive forces and, more important, to check that the continuity is in fact duplex.
When you make continuity measurements that are not contractual, prefer a current of 12 mA. Even though the results cannot be
regarded as those of a normative test, this signicantly increases the life of the device between charges and forestalls untimely
tripping of the installations if there is a connection error.
The permanent mode is used to chain measurements without having to press the TEST button each time.
If the object to be measured is inductive, it is better to switch to pulse mode at 200 mAand make a measurement at positive polar-
ity, then a measurement at negative polarity, manually, in order to leave time for the measurement to settle.
The alarm, if activated, serves to inform the user, by an audible signal, that the measurement is below threshold, making it un-
necessary to look at the display unit to check this point.

14
Automatic reversal of polarity for a measurement at 200 mA.
Before the measurement: to display the measurements already recorded.
After the measurement: to record it.
The direction of the arrow indicates whether you can make a reading (arrow pointing out) or a recording (arrow
pointing in).
The percentage indicates the quantity of memory already used.
6 %
TEST

If you selected thepulse mode, press the TEST buttononceandthemeasurementstops automatically when it is over.
If you selected the permanent mode, press the TEST button once to start the measurement and a second time to
stop it, or else press the record key 6 % directly.
Measurement current.
R =
CONTINUITY
11-22-2013 10:47 2.00 Ω- - .- Hz
0.83 Ω
I 2 0 7 . 4 m A
R + 0 . 5 9 Ω
R - 1 . 0 8 Ω
1 %
200 mA
Measurement with a positive cur-
rent (R+).
Case where the measurement is
below the alarm threshold.
3.3.4. READING OF THE RESULT
In the case of a 200 mA current:
To activate the alarm.
Measurement at positive polarity only.
Measurement at negative polarity only.
Value of the alarm threshold.
Measurementwithreversalofpolarity.
Once the parameters have been dened, you can start the measurement.
Measurement with a negative cur-
rent (R-).
Compensation for the resistance of
the measurement leads is activated.
Permanent mode.
002.00
k Ω
Ω
To deactivate the alarm.
To setthealarmthreshold (see §3.17).The defaultthresholdis2W.
Measurement result:
(R+) + (R-)
2

15
In the case of a 12 mA current, there is no current reversal.
18 . 4 Ω
I 1 2 . 3 m A
CONTINUITY
11-22-2013 10:47 2.00 Ω- - .- Hz
1 %
12 mA
Value of the alarm threshold.
Measurement result.
Case where the measurement is
above the alarm threshold.
The polarity of the current is positive.
Compensation for the resistance of
the measurement leads is activated.
Pulse mode.

To see the next display page.
UΩ0 . 0 V
L - PE 0 . 00 V
L - N X V
N - PE X V
CIAGLOSC
22/07/2014 10:47 2.00 Ω- - .- Hz
1 %
200 mA
External voltage present on the
terminals just before the start of the
measurement.
Current measurement.

16

For help with connections or any other information, use the help function.
In the case of a resistance measurement (kW), there is no current reversal and no compensation for the measurement leads.
3.3.5. ERROR INDICATION
The commonest error in the case of a continuity or resistance measurement is the presence of a voltage on the terminals.An error
message is displayed if a voltage greater than 0.5 VRMS is detected and you press the TEST button.
In this case, the measurement is not enabled. Eliminate the cause of the interference voltage and start the measurement over.
Another possible error is measurement of an overly inductive load that prevents the measurement current from stabilizing. In this
case, start the measurement in permanent mode with only one polarity and wait for the measurement to stabilize.
11-22-2013 10:47
1 %
kΩ
RESISTANCE
1 . 5 8 k Ω
- - .- Hz
Measurement result.
Case where the measurement is
below the alarm threshold.
Permanent mode.

17
3.4. INSULATION RESISTANCE MEASUREMENT
3.4.1. DESCRIPTION OF THE MEASUREMENT PRINCIPLE
The device generates a DC test voltage between the COM and MWterminals. The value of this voltage depends on the resistance
to be measured: it is greater than or equal to UNwhen R ≥ RN= UN/1 mA, and less otherwise. The device measures the voltage
and current present between the two terminals and from them deduces the value of R = V / I.
The COM terminal is the voltage reference point. The MWterminal therefore provides a negative voltage.
3.4.2. MAKING A MEASUREMENT
The alarm, if activated, serves to inform the user, by an audible signal, that the measurement is below threshold, making it un-
necessary to look at the display unit to check this point.
SET UP
OFF
/
R
Set the switch to MW.Use the leads to connect the device to be tested between the COM and MW
terminals of the device. The object to be tested must not be live.
To avoid leakage during the insulation measurement, which would
throwoffthe measurement, do not use the measuring cable when you
make this type of measurement, but two simple leads.
Generally, an insulation measurement on an installation is made between the interconnected phase(s) and neutral, on the one
hand, and earth, on the other.
/
L3
PE
N
L1
L2
If the insulation is not sufcient, you must then make the measurement between each of the pairs to locate the fault. It is for this
reason possible to index the recorded value with one of the following values:
L-N, L-PE, N-PE, L1-PE, L2-PE, L3-PE, L1-N, L2-N, L3-N, L1-L2, L2-L3 or L1-L3
The remoted TEST button of the optional remote control probe makes it easier to trigger the measurement. To use the remote
control probe, refer to its user’s manual.
L3
PE
L1
L2
Operation only
with
C.A 6113/16/17

18
TEST

Once the parameters have been dened, you can start the measurement.
Keep the TEST button pressed until the measurement is stable. The measurement stops when the TEST button
is released.
11-22-2013 10:47
2 %
INSULATION
500 kΩ- - .- Hz
3 1 . 0 6 MΩ
7 s
577 V
Press TEST until the measurement
is stable
Thebargraphprovidesa rapid quan-
titative indication of the insulation.
Measurement result.
Case where the measurement is
above the alarm threshold.
Before disconnecting the leads or starting another measurement, wait a few seconds for the UNvoltage to be zero.
3.4.4. READING OF THE RESULT
Duration of the measurement.
Value of the alarm threshold.
The test voltage UNis present and
dangerous.
To change display pages.
To activate the alarm.
Before the measurement: to display the measurements already recorded.
During or after the measurement: to record it.
The direction of the arrow indicates whether you can make a reading (arrow pointing out) or a recording (arrow
pointing in).
The percentage indicates the quantity of memory already used.
6 %
To choose the nominal test voltage UN: 50, 100, 250, 500 or 1000 V.
0500.0
M Ω
k
Ω
To deactivate the alarm.
To set the alarm threshold (see §3.17). As default, the threshold is set to
R (kW) = UN/ 1 mA.
3.4.3. CONFIGURING THE MEASUREMENT
Before starting the measurement, you can congure it by modifying the parameters displayed:

19

To see the next display page.
INSULATION
11-22-2013 10:47 500 kΩ- - .- Hz
UM Ω0 . 3 V
L - PE X V
L - N X V
N - PE X V
2 % Press TEST until the measurement
is stable
External voltage present on the
terminals just before the start of the
measurement.
To change display pages.
For help with connections or any other information, use the help function.

3.4.5. ERROR INDICATION
The commonest error in the case of an insulation measurement is the presence of a voltage on the terminals. If it is greater than
10 V (the exact value depends on UN, see § 8.2.5), the insulation measurement is not enabled. Eliminate the voltage and start the
measurement over.
The measurement may be unstable, probably because of an overly capacitive load or an insulation fault. In this case, read the
measurement on the bargraph.

20
3.5. 3P EARTH RESISTANCE MEASUREMENT
This function is the only one that can measure an earth resistance when the electrical installation to be tested is not live (new in-
stallation, for example). It uses two auxiliary rods, with the third rod being constituted by the earth electrode to be tested (whence
the name “3P”).
It can be used on an existing electrical installation, but the power must be cut off (main RCD). In all cases (new or existing instal-
lation), the earthing strip of the installation must be open during the measurement.
It is possible to make a rapid measurement and measure only REor else to make a more detailed measurement by also measuring
the resistances of the rods.
3.5.1. DESCRIPTION OF THE MEASUREMENT PRINCIPLE
The device generates between the H and E terminals a square wave at a frequency of 128 Hz and an amplitude of 35 V. It meas-
ures the resulting current, IHE , along with the voltage present between the S and E terminals, USE. It then calculates the value of
RE= USE/IHE.
To measure the resistances of the RSand RHrods, the device internally reverses the E and S terminals and makes a measurement.
It then does likewise with the E and H terminals.
3.5.2. MAKING A MEASUREMENT
There are several measurement methods. We recommend the «62%» method.
SET UP
OFF
Connect the cables to the H and S terminals. Power down the installation and disconnect the earth strap. Then connect the E
terminal to the earth electrode to be checked.
The alarm, if activated, serves to inform the user, by an audible signal, that the measurement is above threshold, making it un-
necessary to look at the display unit to check this point.
3.5.3. CONFIGURING THE MEASUREMENT
Before starting the measurement, you can congure it by modifying the parameters displayed:
/
62% d
d
HS
To compensate fortheresistanceof the lead connectedtotheE terminal, for measurementsoflow values (see §3.16).
Set the switch to RE 3P. Plant the H and S rods in line with the earth electrode. The distance between the S rod and
the earth electrode must be approximately 62% of the distance between the H rod and the
earth electrode.
In order to avoid electromagnetic interference, we recommend paying out the full length of
the cables, placing them as far apart as possible, and not making loops.
Choice of type of measurement: rapid, to measure RE only (icon crossed out), or detailed, to measure also rod
resistances RSand RH. This last case is useful if the ground is dry, making the resistance of the rods high.
earth
strap