Chauvin Arnoux C.A 6532 User manual

GB - User’s manual
C.A 6532
C.A 6534
Megohmmeters

2
Thank you for purchasing a megohmmeter C.A 6532 or C.A 6534.
For best results from your instrument:
read these operating instructions carefully,
comply with the precautions for use.
WARNING, risk of DANGER! The operator must refer to these instructions whenever this danger symbol appears.
WARNING, risk of electric shock. The voltage applied to parts marked with this symbol may be hazardous.
Equipment protected by double insulation. Earth.
The voltage on the terminals must not exceed 700 V. Battery.
Remote control probe. Information or useful tip.
The product is declared recyclable following an analysis of the life cycle in accordance with standard ISO14040.
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
appliance exceeds regulation requirements with respect to recycling and reuse.
The CE marking indicates conformity with European directives, in particular LVD and EMC.
The rubbish bin with a line through it indicates that, in the European Union, the product must undergo selective
disposal in compliance with Directive WEEE 2002/96/EC. This equipment must not be treated as household waste.
Definition 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 fixed 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.
> 700V

3
PRECAUTIONS FOR USE
This instrument is compliant with safety standard IEC 61010-2-030 and the leads are compliant with IEC 61010-031, for voltages
up to 600 V in category IV or 1,000 V in category III.
Failure to observe the safety instructions may result in electric shock, fire, explosion, and destruction of the instrument and of
the installations.
The operator and/or the responsible authority must carefully read and clearly understand the various precautions to be taken in
use. Sound knowledge and a keen awareness of electrical hazards are essential when using this instrument.
If you use this instrument other than as specified, the protection it provides may be compromised, thereby endangering you.
The safety of any system in which this instrument might be incorporated is the responsibility of the integrator of the system.
This instrument can be used on category IV installations, for voltages not exceeding 600 VRMS with respect to earth or 700 VRMS
max between terminals.
Do not use the instrument on networks of which the voltage or category exceeds those mentioned.
Observe the environmental conditions of use.
Except for voltage measurements, make no measurements on live devices.
Do not use the instrument if it seems to be damaged, incomplete, or poorly closed.
Before each use, check the condition of the insulation on the leads, housing, and accessories. Any item of which the insulation
is deteriorated (even partially) must be set aside for repair or scrapping. There is a risk of electric shock if the instrument is used
without its battery compartment cover.
Before using your instrument, check that it is perfectly dry. If it is wet, it must be thoroughly dried before it can be connected or
used.
Use only the leads and accessories supplied. The use of leads (or accessories) of a lower voltage rating or category limits the
use of the combined instrument + leads (or accessories) to the lowest category and service voltage.
When handling the leads, test probes, and crocodile clips, keep your fingers behind the physical guard.
Before removing of the battery compartment cover, make sure that the measurement leads (and accessories) are disconnected.
Replace all of the batteries at once. Use alkaline batteries.
Use personal protection equipment systematically.
All troubleshooting and metrological checks must be done by competent, accredited personnel.

4
CONTENTS
1. PRESENTATION ....................................................................................................................................................................... 5
1.1. Delivery condition........................................................................................................................................................... 5
1.2. Accessories .................................................................................................................................................................... 6
1.3. Replacement parts ......................................................................................................................................................... 6
1.4. Description of the instruments ....................................................................................................................................... 7
1.5. Terminal block .............................................................................................................................................................. 10
1.6. Functions of the instrument ......................................................................................................................................... 10
1.7. TEST button ................................................................................................................................................................. 10
1.8. Function keys ............................................................................................................................................................... 11
1.9. Display.......................................................................................................................................................................... 11
2. USE ......................................................................................................................................................................................... 12
2.1. General ......................................................................................................................................................................... 12
2.2. Voltage measurement................................................................................................................................................... 12
2.3. Insulation measurement ............................................................................................................................................... 13
2.4. Continuity measurement .............................................................................................................................................. 16
2.5. Resistance measurement............................................................................................................................................. 18
2.6. Capacitance measurement (C.A 6532)......................................................................................................................... 18
2.7. 'REL function .............................................................................................................................................................. 19
2.8. HOLD function ............................................................................................................................................................ 19
2.9. Backlighting.................................................................................................................................................................. 20
2.10. SET-UP ....................................................................................................................................................................... 20
2.11. Alarm function ............................................................................................................................................................ 21
2.12. Automatic stop ........................................................................................................................................................... 22
2.13. Storage ....................................................................................................................................................................... 22
2.14. Bluetooth communication .......................................................................................................................................... 24
2.15. Errors .......................................................................................................................................................................... 26
2.16. Resetting the instrument ............................................................................................................................................ 27
3. TECHNICAL CHARACTERISTICS ........................................................................................................................................ 28
3.1. General reference conditions ....................................................................................................................................... 28
3.2. Electrical characteristics............................................................................................................................................... 28
3.3. Variation in the range of use ......................................................................................................................................... 31
3.4. Intrinsic uncertainty and operating uncertainty ............................................................................................................ 33
3.5. Power supply................................................................................................................................................................ 33
3.6. Environmental conditions ............................................................................................................................................. 33
3.7. Mechanical characteristics .......................................................................................................................................... 33
3.8. Compliance with international standards..................................................................................................................... 34
3.9. Electromagnetic compatibility (CEM) ........................................................................................................................... 34
4. MAINTENANCE...................................................................................................................................................................... 35
4.1. Cleaning ....................................................................................................................................................................... 35
4.2. Replacing the batteries................................................................................................................................................. 35
5. WARRANTY ........................................................................................................................................................................... 36

5
1One C.A 6532 or C.A 6534, depending on which model was ordered.
2Two straight/right-angle safety leads (red and black).
3One red crocodile clip.
4One black test probe.
5Two wire grips (red and black).
6Six LR6 or AA batteries.
7One carrying case, which also allows hands-free use.
8One CD containing the user manuals (one file per language).
9One multilingual safety data sheet.
10 One multilingual getting started guide.
11 One CD containing the MEG software.
1. PRESENTATION
1.1. DELIVERY CONDITION
English
Safetydatasheet MeasuringInstrumentin CAT II or CAT IIIor CAT IV (en)
Foryour safety and t o avoid damage to property:
Readwhat follows carefully and observethese precautions
Readthe other documents provided carefully, including any documents on the CD-ROM
Meaningsof the principal symbols that may be present on your product:
CAUTION!Risk of Danger!
Referto this safety datasheet and comply
withthe precautions for use.
CAUTION!Risk of electric shock!
Refer to this safety datasheet, to the user
manualand comply with the precautions for use.
Current clamp: Can be applied to or
removed from non-insulated or bare
conductorsat dangerous voltages.
Currentclamp: Do not apply toor remove from
conductorsat dangerous voltages.
The CE marking indicates compliance
withthe European "Low Voltage", "EMC",
"WEEE",and "RoHS" directives.
In the European Union, this product is
subjectto selective collectionin accordance
witht he European WEEE directive. Do not
disposeof itas ordinarywas te; contact the
manufacturer for information about
collectionpoints.
Earth
Doubleinsulation
Do not dispose of the batteries as ordinary
waste;take them to a collection point.
Conditionsof use
Temperature,Humidity: Comply with the values stated in the user manual.
Altitude: 2 000 m
Pollutiondegree : 2
Precautionsfor use
Thesesafety instructions mustbe respected to assurethe personal safetyand the environmentof use. If
youdo not comply with them, there is a risk of electric shock, explosion or re.
Ifyou use these instruments other than as specied or without observing the elementary safety rules, the
protectionthey provide may be compromised, endangering you.
Thesafety of any system which may include these leads or accessories is the responsibility of the
assemblerof the system.
Each time before use, always check that the insulation of the leads or accessories is in good
condition.Any element whose insulation is damaged (even partially) must be removed from use and
scrapped.A change of color of the insulating material is an indication of deterioration.
Thesteady-state voltages, currents, and measurement categories are marked onthe instruments, on
thecords, and on the accessories. Comply with these values.
Use specic individual safety protections when hazardous live parts can be accessible in the
installationwhere the measure is performed
Before using your instrument, check that it is in goodworking order (for example,by measuring a
knowndangerous voltage).
Ifthe manual states how to replace the fuse(s) of your instrument, use only the recommended fuses.
Beforereplacing the batteries (rechargeable or not), disconnect the leads of your instrument.
The use of a measurement instrument, a lead or an accessory with a lower
categoryor voltage downgrades the use of the assembly (instrument + lead +
accessory)to the lowest category and/or operating voltage.
Using a measuring instrument in a category II or III or IV environment can be dangerous. In such
measurement environments, the operators must be trained and/or accredited and/or informed of the
safetymeasures to be taken.
Measurementcategories:
CATII: Measurementcategory II is for measurements performed on cir cuits directly connectedt o the
lowvoltage installation
Examples:measurements on household appliances and portable tools.
CATIII: Measurement category III is for measurement performed in the building installation
Examples:distribution boards, circuit-breakers,machine or industrialequipment with permanent
connectionto the xed installation.
CATIV: MeasurementcategoryIVisformeasurementsperformedatthesourceofthelow-voltageinstallation.
Example: meters and measurements on primary overcurrent protection devices and ripple
controlunits.
Cleaning
Disconnectthe leads or the test accessories
Use a soft cloth, dampened with soapy water. Rinse with a damp cloth and dry rapidly with a dry
clothor forced air. Do not use alcohol, solvents, or hydrocarbons.
Donot modify the leads or accessories. Any non-compliant repairs can cause risks of electric shock
orburns.
➀
➅
➄
➃
➁
➂
➇
➈➉
➆
HOLD
MEM
SET-UP
CLR
C.A 6532
ME GOH MME TER
0
100V
V
k:
MR -
OF F
:
50V
M: 
TEST
REL
11

6
1.2. ACCESSORIES
Type 3 remote control probe
Continuity pole
Thermometer + K thermocouple, C.A 861
Thermo-hygrometer C.A 846
USB-Bluetooth adapter
DataView®software
1.3. REPLACEMENT PARTS
2 straight/right-angle safety leads (red and black) 1.50 m long
2 crocodile clips (red and black)
2 test probes (red and black)
2 wire grips (red and black)
Carrying case that also allows hands-free use
For accessories and spare parts, visit our website:
www.chauvin-arnoux.com

7
HOLD
MEM
SET-UP
CLR
C.A 6532
MEGOHMMETER
0
100V
V
k:
MR -
OFF
:
50V
M: 
TEST
REL
M
VDC
AC
k
<
>
ALARM
MEM
DARPI T1T2
knF/ km
MmAµA
GVHz
%
G
M
HOLD
REL
P
G  nF
µF
Connection terminals.
Backlit digital display unit.
6 function keys.
Eight-position switch to choose the function or to
switch the instrument off.
TEST button to start the measurements.
1.4. DESCRIPTION OF THE INSTRUMENTS
1.4.1. C.A 6532

8
HOLD
MEM
SET-UP
CLR
C.A 6534
MEGOHMMETER
0
V
k:
MR -
OFF
:
M: 
10V
100V
250V
500V
25V
TEST
REL
G 
M
VDC
AC
k
<
>
ALARM
MEM
k
MmAµA
GVHz
%
G
M
HOLD
REL
P
Connection terminals.
Backlit digital display unit.
6 function keys.
TEST button to start the measurements.
Ten-position switch to choose the function or to
switch the instrument off.
1.4.2. C.A 6534

9
1.4.3. ON THE BACK
Captive quarter-turn screw.
Battery compartment cover.
Prop.
Magnet for attachment to a metallic surface.
Non-skid pads.

10
1.5. TERMINAL BLOCK
The terminal block has one + terminal and one - terminal that can be used to connect the remote control probe (optional accessory).
> 700V
600V CAT IV
1.6. FUNCTIONS OF THE INSTRUMENT
C.A 6532 and C.A 6534 megohmmeters are portable measuring instruments with digital displays. They are powered by batteries.
The C.A 6532 is designed for telecommunication applications (testing telephone lines).
The C.A 6534 is designed for applications in the electronics industry. It can also be used, with suitable probes, to test the immunity
of walls and floors to electrostatic discharges (ESD).
C.A 6532 C.A 6534
Test voltages for insulation measurements 50 V - 100 V 10 V - 25 V - 100 V -
250 V - 500 V
Calculation of ratios PI and DAR 98
Continuity measurement 9 9
Resistance measurement 9 9
Programmable alarms 9 9
Frequency measurement 98
Capacitance measurement 98
Distance measurement 98
Storage of the measurements 9 9
Bluetooth 9 9
In continuity testing, the instruments are protected against external voltages without a fuse.
1.7. TEST BUTTON
The TEST button is used to make insulation measurements.

11
1.8. FUNCTION KEYS
In general, the keys have a first function, marked on the key, obtained by a short press, and a second function, marked under
the key, obtained by a long press.
Key Function
The TIMER key is used to select the , , PI, and DAR functions.
The key is used to switch the display unit backlighting on and off.
HOLD The HOLD key is used to freeze, then unfreeze, the display of the measurement.
SET-UP The SET-UP key is used to access the parameters and information of the instrument.
0
The
0
key is used to apply compensation for the resistance of the measurement leads in continuity testing.
The ALARM key is used to activate or deactivate the alarms.
Set XThe Sand Xkeys serve:
to modify the display and to program the durations of insulation measurements,
to choose the continuity test current,
and to program the alarm thresholds.
'Rel The 'Rel key is used to display the measurement from which a stored reference measurement is subtracted.
MEM The MEM key is used to record measurements.
CLR The CLR key is used to erase recorded measurements.
The Bluetooth key is used to transfer data recorded in the memory of the instrument to a computer using the
Bluetooth wireless connection. The Bluetooth link also serves to start insulation measurements from the PC.
1.9. DISPLAY
Logarithmic bargraph to display insulation measurements.
Secondary display unit.
Main display unit.
When the measured value is below the minimum,
the instrument displays - - - - .
G  nF
F
M
VDC
AC
k
<
>
ALARM
MEM
VAR
DARPI T1T2
knF/ km
MmA A
GVHz
%
G
M
HOLD
REL
P
In voltage measurement, when the measurement exceeds the limit (either positive or negative), the instrument displays OL or -OL.

12
GVHz %
2. USE
2.1. GENERAL
VDC
AC
GVHz
At start-up, the instrument indicates the remaining battery
life.
If the battery voltage is too low to ensure correct operation
of the instrument, it so reports.
The batteries must then be replaced (see § 4.2)), since
the battery life indication is no longer reliable.
Except for the voltage measurement, all measurements are made on devices in the power-off condition. It is therefore
necessary to check that there is no voltage on the device to be tested before making a measurement.
2.2. VOLTAGE MEASUREMENT
Set the switch to V or to one of the M:positions.
Start by making sure of the proper operation of the voltage
measurement, by measuring a known voltage before each
use. For example on a power outlet.
Then, using the leads, connect the device to be tested to the
terminals of the instrument.
100V
V
k:
MR -
OFF
:
50V
M: 
VDC
AC
GVHz
The instrument displays the voltage on the terminals. It detects whether the voltage is AC or DC and, if it is AC, the C.A 6532
also displays the frequency.
In the M:settings, the symbol indicates that the voltage is too high (>
25 V) and that insulation measurements are prohibited.
If the voltage is > 15 V, continuity, resistance, and capacitance measurements
are prohibited.

13
100V
V
k:
MR -
OFF
:
50V
M: 
2.3. INSULATION MEASUREMENT
Press the TEST button and hold it down until the
measurement displayed is stable.
If a voltage greater than 25 V is detected, pressing the
TEST button has no effect.
The measurement is displayed on the main display unit
and on the bargraph.
The secondary display unit indicates the test voltage
generated by the instrument.
M
GV
M
The symbol indicates that the instrument is generating a hazardous voltage (> 70 V).
The measurement results can be thrown off by the impedances of additional circuits connected in parallel or by transient
currents.
At the end of the measurement, release the TEST button. The instrument stops generating the test voltage and discharges the
device being tested. The symbol is displayed until the voltage on the device has fallen below 70 V.
Do not disconnect the leads and do not start any measurement while the symbol is displayed.
When you release the TEST button, the measurement results remain displayed (HOLD) until the next measurement, or the HOLD
key is pressed, or the instrument is switched off.
Set the switch to one of the M:positions.
The test voltage you should choose depends on the voltage of the installation to be
tested. For example, for a network installation at 230 V, insulation measurements
will be made at 500 V.
VDC
Use the leads to connect the device
to be tested to the terminals of the
instrument. The device to be tested
must not be live.
Pressing the Xkey, before or during
the measurement, changes the
secondary display unit to display the
current or the elapsed time.
*
TEST
> 1s

14
DAR
M
M
DAR
2.3.1. OPERATION OF THE TEST BUTTON
The TEST button is pressed to make an insulation measurement. The test voltage is generated for as long as the press is maintained.
When the button is released, the measurement stops.
In the mode, simply press the TEST button once to start the measurement, then press it a second time to stop; there is no
need to keep the button pressed. However, if you forget to stop the measurement, it will stop automatically after 15 minutes.
In the timed test mode ( , DAR, PI), simply press the TEST button once to start the measurement; it will stop automatically at
the end of the programmed time.
2.3.2. TIMER KEY
This key is active only for insulation measurements.
1st press This function is used to lock the TEST button so as not to have to keep it pressed during the
insulation measurement.
2nd press This function is used to program a test duration between 1 and 39:59 minutes. Use the Xand
Skeys to modify the value displayed.
When the time is displayed, press the Xkey to enter programming mode. When the first digit
blinks, you can change it using the Skey. Press Xto go to the next digit and Sto change it.
Press Xone last time to validate.
3rd press
PI T1T2
The PI function is used to calculate the polarization index, which is the ratio of the measurement
at T2 = 10 minutes to the measurement at T1 = 1 minute.
4th press
DARPI T1T2
The DAR function (for the C.A 6532) is used to calculate the dielectric absorption ratio, which is
the ratio of the measurement at T2 = 1 minute to the measurement at T1 = 30 seconds.
5th press Exit from the function.
When one of the 3 functions, , PI, or DAR, is programmed, pressing the TEST button triggers the count down from the
programmed time. When the time has elapsed, the measurement stops and the result is displayed.
Successive presses on the Skey display intermediate values.
For :
the programmed time, the voltage and current at the end of the measurement.
For PI and DAR:
time T1 and the voltage, current, and insulation resistance at that time.
time T2 and the voltage, current, and insulation resistance at that time.
*
HOLD

15
*
TEST
Press the TEST key to return to the voltage measurement.
VDC
When the probe is connected, the symbol is displayed.
2.3.3. REMOTE CONTROL PROBE (OPTION)
The remote control probe is used to trigger the measurement using the remoted TEST button on the probe. To use this accessory,
refer to its operating instructions.
Interpretation of the results
DAR PI Condition of insulation
DAR < 1,25 PI < 2 Poor or even dangerous
1,25 dDAR < 1,6 2 dPI < 4 Good
1,6 dDAR 4 dPI Excellent

16
Set the switch to :.
100V
V
k:
MR -
OFF
:
50V
M: 
Press the Xkey to choose current measurement.
*
MEM
The standard requires that the measurements be made at 200 mA. But a current of 20 mA reduces the consumption of
the instrument and so increases its battery life.
2.4.1. COMPENSATION OF THE LEADS
To ensure precise measurements, it is necessary to compensate the resistance of the measurement leads.
Short-circuit the measurement leads and long-press the
0
key.
*
0
> 2s
MmA
The display changes to zero and the symbol is displayed. The resistance of the leads will be systematically subtracted from
all continuity measurements. If the resistance of the leads is > 10 :, there is no compensation.
The compensation remains in memory until the instrument is switched off. The continuity measurement range is reduced
by the stored compensation value.
If the leads are changed with no change of compensation, the display may become negative. The instrument reports that
the compensation must be redone by displaying blinking.
2.4. CONTINUITY MEASUREMENT
The continuity measurement measures a low resistance (< 10 or 100 :depending on the current) at a high current (200 or 20 mA).

17
2.4.2. ELIMINATION OF THE COMPENSATION OF THE LEADS
To eliminate the compensation of the leads, leave the leads open and long-press the
0
key.
MmA
R
The instrument makes the measurement directly. It displays the result and the
measurement current.
To obtain a continuity value per standard IEC 61557:
Make a measurement at 200 mA and note its value, R1.
Then reverse the leads and note the value R2.
Calculate the mean: R = R1+ R2
2
MmA
If an external voltage > 15 V appears during the continuity measurement, the instrument is protected without a fuse. The
continuity measurement is stopped and the instrument reports an error until the voltage disappears.
*
0
> 2s
The display indicates the resistance of the leads and the symbol goes off.
2.4.3. MAKING A MEASUREMENT
Use the leads to connect the device to be tested to the terminals of the instrument. The device to be tested must not be live.

18
100V
V
k:
MR -
OFF
:
50V
M: 
Set the switch to k:.As for a continuity measurement, connect the device to
be tested to the terminals of the instrument. The device
to be tested must not be live (see § 2.4.3).
2.5. RESISTANCE MEASUREMENT
The resistance measurement is made with a weak current and can measure resistances up to 1000 k:.
k
2.6. CAPACITANCE MEASUREMENT (C.A 6532)
Set the switch to .
100V
V
k:
MR -
OFF
:
50V
M: 
As for a continuity measurement, connect the device to
be tested to the terminals of the instrument. The device
to be tested must not be live (see § 2.4.3).
G  nF
knF/ km
The instrument displays the capacitance and the corresponding line length, computed from the programmed capacitance per
unit length.
Length = capacitance / capacitance per unit length
To program the capacitance per unit length, press the Xkey. Then use the Sand Xkeys to program a value between 40 nF/km
and 60 nF/km. Press the Xkey to exit and confirm. The value is saved when the instrument is switched off.

19
Rmeas - Rref
Rref
M
V
G
M
REL
V
G
*
CLR
REL
2.7. 'REL FUNCTION
For an insulation, resistance, or capacitance measurement, it is possible to subtract a reference value from the measured value
and display the difference.
To do this, make a measurement, then press the 'REL.
The measurement (Rref) is stored and subtracted from
the present measurement (Rmeas).
The main display changes to zero and the 'REL
symbol is displayed.
Pressing the Xkey displays, in addition, the measured
value as a % of the stored value. %
M
REL
G
In insulation measurements, only the digital display is modified by the 'REL. The bargraph continues to display the true
measured value.
To exit from the 'REL function, it is necessary to press the 'REL key again or turn the switch.
2.8. HOLD FUNCTION
x 100
*
HOLD
Pressing the HOLD key freezes the display of the measurement. This can be done in all functions except
voltage in the M:setting.
To unfreeze the display, press the HOLD key again.
It is not possible to effect a HOLD in a timed measurement ( , DAR, PI).
If the measured value is less than the stored value, the display becomes negative.
*
MEM

20
*
0
2.9. BACKLIGHTING
Pressing the key switches on the backlighting of the display unit.
To switch it off, press the key again. Otherwise, it goes off by itself at the end of one minute.
2.10. SET-UP
*
SET-UP
> 2s A long press on the SET-UP key is used to enter the configuration (set-up) function of the instrument.
Then use the Sand Xkeys to scroll and modify the parameters.
1st press
on S
The buzzer is active.
To deactivate it, press Xto make On blink, Sto change it to OFF, then Xto validate
the change.
The symbol disappears from the display when Set-up is exited.
2nd press
on S
P
Automatic switching off is activated.
To deactivate it, press Xto make OFF blink, Sto change it to On, then Xto validate
the change.
The
P
symbol appears on the display when Set-up is exited.
3rd press
on S
Display of the type of instrument.
4th press
on S
Display of the internal software version.
5th press
on S
Display of the version of the boards.
6th press
on S
Return to the first press.
To exit from configuration, short-press the SET-UP key.
The de-activations of the buzzer and of automatic switching off are lost when the instrument is off.