Chauvin Arnoux 760N User manual

ENGLISH User's manual
C.A 760N
VOLTAGE DETECTOR

WARNING, risk of DANGER! The operator must
refer to these instructions whenever this danger
symbol appears.
Equipment protected by double insulation.
Equipment suitable for live work.
Battery.
Earth.
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 instal-
lations.
Example: power supply to domestic electrical appliances
and portable tools.
Thank you for purchasing a C.A 760N voltage detector.
For best results from your instrument:
read these operating instructions carefully,
comply with the precautions for use.

PRECAUTIONS FOR USE
This device is protected against voltages up to 600V with
respect to earth in measurement category IV.
The protection provided by the device may be compromised
if it is used other than as specified by the manufacturer and
so endanger the user.
Do not exceed the maximum rated voltage and current and
the measurement category. Do not use your instrument
on networks of which the voltage or category exceeds
those stated.
Comply with the conditions of use, namely the temperature,
the humidity, the altitude, the degree of pollution, and the
place of use.
When handling the test probes, keep your fingers behind
the physical guard.
Use connection accessories of which the measurement
category and service voltage are at least equal to those
of the device.
Do not use the device if it is open, damaged, or poorly reas-
sembled, or its accessories if they seem to be damaged.
The device is designed to be used by qualified personnel
and in compliance with national safety rules.
We recommend wearing personal protective equipment
when the environment in which the device is used makes
it necessary.
All troubleshooting and metrological checks must be done
by competent, accredited personnel.
CONTENTS
1. Presentation...............................................................22
2. Use..............................................................................25
3. Characteristics ..........................................................31
4. Maintenance ..............................................................34
5. Warranty ....................................................................35
6. To order ......................................................................35

C.A 760N
SAFETY TESTER
AUTO
TEST
L3
L1
L2
+
COM
AC
DC
V
L1
CAT IV
600V
L1-L2-L3
L1-L3-L2
300k Ω
60k Ω
2k Ω
Ω
400
230
127
50
690 AC
750 DC
12
24
+
-
ELV
Ph
1. PRESENTATION
1.1. C.A 760N
Red test probe. Black lead terminated
by a test probe.
Connection
terminals.
Bargraph.
Self-test
button.
Detachable strap.
Phase indica-
tor.
Hazardous
voltage indi-
cator.
Polarity indi-
cator.
Phase
order.
Phase
order
button.

1.2. ON THE BACK
When the device is not in use, the test probes can be stowed
on the back.
Red test probe.
Black test probe.
Battery compart-
ment cover.
Guards.
Removable protec-
tive caps.

1.3. FUNCTIONS
The C.A 760N is a Voltage Detector with indicator lights.
It complies with the requirements of standard IEC 61243-3.
The main function of the C.A 760N is to test for the absence of
any voltage. It detects hazardous voltages, meaning voltages
exceeding the ELV (extra low voltage: 50 Vac or 120 Vdc),
even if its batteries are low or missing.
Its other functions are:
Indication of a voltage between 12 and 690 Vac or 750 Vdc,
with indication of the polarity.
Continuity level quality indication.
Phase position indication.
Phase order indication.
The voltages indicated on the C.A 760N are nominal volt-
ages. Make sure that the device will be used on networks at
standardized voltages.


2. USE
This device is a detector. The indications it provides must
not be used for measurement purposes.
2.1. SELF-TEST
Before using the C.A 760N, perform a self-test. This checks
the integrity of the leads, the proper operation of the elec-
tronic circuit, and the battery voltage.
Connect the red test probe to the + terminal and the black
lead to the COM terminal.
Touch the 2 test probes together and press the AUTO TEST
button. Press for as long as necessary.
If all of the indicators of the device except ELV light and
the audible signal sound, the device is working properly
and can be used.
+
AC
DC
V
CAT IV
600V
400
230
127
50
690 AC
750 DC
12
24
+
-
E LV
Ph
COM
300k Ω
60k Ω
2k Ω
Ω
If every other indicator lights, the batteries must be replaced
(see §4.2).
+
AC
DC
V
CAT IV
600V
400
230
127
50
690 AC
750 DC
12
24
+
-
E LV
Ph
300k Ω
60k Ω
2k Ω
COM
300k Ω
60k Ω
2k Ω
Ω

26
Position beyond which your hands must not go.
If every third indicator is off, there is a problem with the
leads. Check that they are correctly connected and that
they are actually touching, then press the AUTO TEST
button again. If the problem persists, the lead and/or the
test probe must be replaced.
+
AC
DC
V
CAT IV
600V
400
230
127
50
690 AC
750 DC
12
24
+
-
E LV
Ph
COM
300k Ω
60k Ω
2k Ω
Ω
If no indicator lights, replace the batteries (see §4.2). If the
problem persists with new batteries, the device is defective
and must be sent in for repair (see §4.4).
After each check, perform a self-test in order to confirm the
proper operation of the device.
In a noisy environment, make sure that you can in fact hear
the audible signal emitted by the device.
Remark: If the AUTO TEST button is kept pressed for
more than 10 seconds when the test probes are
not touching each other, the device switches to
standby.
2.2. VOLTAGE DETECTION
Connect the red test probe to the + terminal and the black
lead to the COM terminal.
Keep your hands behind the guards of the device and of
the test probe.
Place the test probes on the element to be tested and main-
tain a firm contact.
There is no need to switch the C.A 760N on, because it starts
up automatically.

+
AC
DC
V
CAT IV
600V
400
230
127
50
690 AC
750 DC
12
24
+
-
E LV
Ph
COM
300k Ω
60k Ω
2k Ω
Ω
DC, the indicators light to indicate its value and the +in-
dicator (green) or the -indicator (orange) lights to indicate
the polarity.
+
AC
DC
V
CAT IV
600V
400
230
127
50
690 AC
750 DC
12
24
+
-
E LV
Ph
COM
300k Ω
60k Ω
2k Ω
Ω
hazardous (>50 Vac or 120 Vdc): the higher the voltage,
the faster the ELV indicator (red) flashes; the device also
emits audible beeps.
ELV: Extra Low Voltage. This redundant indicator indicates
that the voltage is greater than the ELV.
The first two indicators of the bargraph are green to
indicate that the voltage is not hazardous and the device
does not beep. The remaining indicators are red and the
device beeps.
If only the ELV indicator lights, the batteries are low or
missing.
If the voltage present is:
AC, the indicators light to indicate its value and the +(green)
and -(orange) indicators light.
+
AC
DC
V
CAT IV
600V
400
230
127
50
690 AC
750 DC
12
24
+
-
E LV
Ph
300k Ω
COM
300k Ω
60k Ω
2k Ω
Ω
If there is a voltage near the element being tested, the device
may indicate the presence of an operating voltage on the
element being tested.

2.3. CONTINUITY LEVEL INDICATION
Connect the red test probe to the +terminal and the black
lead to the COM terminal.
Keep your hands behind the guards of the device and of
the test probe.
Place the test probes on the element to be tested and main-
tain a firm contact.
R
If the device has been left unused for more than 30 minutes
or has been set to standby, first perform a SELF-TEST in
order to switch it to hot standby.
If no voltage is detected, the C.A 760N performs a continu-
ity test.
If the result is:
<100W:the first 5 indicators of the bargraph blink one after
another. The device emits a continuous audible signal.
Between 100Wand 2kW:the first 4 indicators of the
bargraph light.
Between 2kWand60kW:the first 3 indicators of the
bargraph light.
Between 60kWand 300kW:the first 2 indicators of the
bargraph light.
>300kW:the device displays nothing and does not emit
a sound.
2.4. PHASE DETECTION
The C.A 760N performs a unipolar phase detection. This
means that connecting a single test probe is enough to
determine whether a phase is present.
To operate correctly, the phase detection function must be
used on networks referred to earth.
It can be used, for example, to locate the phase on an outlet
of a network referred to earth.
Connect the red test probe to the + terminal
Keep your hands behind the guards of the device
Place the test probes on the element to be tested and main-
tain a firm contact.

If the test probe is in fact on the phase, the Ph (phase) indica-
tor flashes and the device beeps.
Warning: if the Ph indicator is not flashing, that does not
mean that there is no hazardous voltage on the
outlet.
2.5. PHASE ORDER
Place the black test probe on the first phase of the three-
phase system and the red test probe on the second phase.
The device indicates the voltage present.
Press the button.
+
AC
DC
V
CAT IV
600V
400
230
127
50
690 AC
750 DC
12
24
+
-
E LV
Ph
COM
300k Ω
60k Ω
2k Ω
Ω
If the voltage is less than 50 Vac or dc, the function is
disabled.
Otherwise, the two indicators, L1-L2-L3 and L1-L3-L2,
blink alternately.

L3
PE
N
L1
L2
+
AC
DC
V
CAT IV
600V
400
230
127
50
690 AC
750 DC
12
24
+
-
E LV
Ph
COM
300k Ω
60k Ω
2k Ω
Ω
L1
L1-L2-L3
L1-L3-L2
When the C.A 760N emits two high-pitched beeps, shift the
red test probe to the last phase of the system. The device
indicates the voltage present.

L3
PE
N
L1
L2
If there is a problem, in other words, if the device fails to
detect a change of phase within 10 seconds or if the phases
are not balanced, it reports an error by emitting two low-
pitched beeps.
Otherwise, the device indicates the phase order by lighting:
the L1-L2-L3 indicator and emitting a low-pitched beep,
followed by a high-pitched beep,
or the L1-L3-L2 indicator and emitting a high-pitched beep
followed by a low-pitched beep.
2.6. USING THE C.A 751 (OPTION)
If you have purchased a C.A 751 2P+T adapter, you can test
for the absence of voltage between the phase and neutral
on an outlet.
Attention: Pairing the C.A 760N with the C.A 751 derates
the combined product to measurement category
II, 250V.
Connect the C.A 751 to the terminals of the C.A 760N, then
refer to the operating instructions of the CA.751.
Warning: The device will indicate a resistance between 60
and 300kWwhen it is connected.

3. CHARACTERISTICS
3.1. REFERENCE CONDITIONS
Quantity of influence Reference values
Temperature 23±5°C
Relative humidity 30 to 75 % HR
Supply voltage 3±0,1V
Frequency of the measured signal DC or 45 to 65 Hz
Type of signal sinusoidal
External electric field <1V/m
DC external magnetic field <40A/m
3.2. ELECTRICAL CHARACTERISTICS
3.2.1. VOLTAGE
Nominal voltages: 12, 24, 50, 127, 230, 400, 690 Vac/Vdc
and 750 Vdc.
Frequency of operation: DC and 16.67 at 800Hz.
Maximum input current: 3.5 mArms.
Input impedance >300kW.
Response time <500ms.
The indicator corresponding to voltage V lights before the
voltage reaches 85% V.
If no indicator lights, the voltage present is < 12V.
The C.A 760N must be used only on networks at standard-
ized voltages.
Operating cycle: 30s (maximum duration for which the device
can remain connected to a live element) - 240s (minimum
resting time during which the detector must not be connected
to a live element).
3.2.2. CONTINUITY AND RESISTANCE
Continuity detection is disabled if a voltage > 1V is present.
The triggering thresholds are:
100W<R<150W
2kW<R<3kW
60kW<R<90kW
300 W<R<450kW
Test current ≤1mA
Open-circuit voltage ≤3.3V

100
90
80
70
60
50
40
30
20
10
0
-50 -40 -30 -20 -10 0 10 20 30 40 50 60 70 80 90
°C
321
%RH
3.2.3. PHASE IDENTIFICATION
15Hz<frequency<65Hz
50 Vac<voltage<690 Vac and 45Hz<frequency ≤65Hz
150 Vac<voltage<690 Vac and frequency<45Hz
3.2.4. PHASE-ORDER
Frequency between 45 and 400Hz.
Voltage between 50 and 690 Vac between phases.
Time to acquisition of the information after contact ≤1s.
Retention time of the information: 10s.
Acceptable amplitude unbalance: 20%.
Acceptable level of harmonics in voltage: 10%.
Rejection of power company remote control signals (TCC-
175Hz-188Hz).
3.3. ENVIRONMENTAL CONDITIONS
The device is of type N. It must be used under the following
conditions:
1: Reference domain
2: Operating range
-15 to +45°C and 20 to 95% RH without condensation.
(35°C max. at 95% RH)
3: Range in storage (without batteries)
-40 to +70°C and 20 to 95% RH without condensation.
If an extended period of non-use is anticipated, or for storage,
withdraw the batteries from the housing.
For use indoors and outdoors without rain.
Pollution degree: 2.
Altitude: <2000m.
3.4. ALIMENTATION
The C.A 760N is powered by two 1.5V alkaline batteries
(type AAA or LR3).
The battery life is 7,000 10-second measurements.

The batteries can be replaced by rechargeable batteries, but
the life between charges will be much shorter.
3.5. CHARACTERISTICS OF CONSTRUCTION
Dimensions (LxWxH) 163 x 64 x 40mm
Weight approximately 210g
Cord length 90cm
Protection class IP65 per IEC 60529
IK04 per IEC 50102
Drop 2 metres
3.6. COMPLIANCE WITH INTERNATIONAL
STANDARDS
Two-pole voltage detector per IEC 61243-3 ed. 2 of 2009.
3.7. ELECTROMAGNETIC COMPATIBILITY
Emissions and immunity in an industrial setting compliant
with IEC 61326-1.

4. MAINTENANCE
Except for the batteries, the instrument contains
no parts that can be replaced by personnel who have not
been specially trained and accredited. Any unauthorized
repair or replacement of a part by an “equivalent” may
gravely impair safety.
4.1. CLEANING
Disconnect the instrument completely.
Use a soft cloth, dampened with soapy water. Rinse with a
damp cloth and dry rapidly with a dry cloth or forced air. Do
not use alcohol, solvents, or hydrocarbons.
4.2. REPLACEMENT OF BATTERIES
If, during the self-test, only half of the indicators light, you
must replace the batteries.
Disconnect anything connected to the device.
Using a screwdriver, unscrew the two captive screws of
the battery compartment cover located on the back of
the device.
Withdraw the spent batteries and replace them with two
new batteries (AAA or LR3 1.5V alkaline batteries).
Close the battery compartment cover and make sure that
it is completely and correctly closed.
Screw the two screws back in.
Spent batteries must not be treated as ordinary
household waste. Take them to the appropriate
recycling collection point.
4.3. METROLOGICAL CHECK
Like all measuring or testing devices, the instrument
must be checked regularly.
This instrument should be checked at least once a year.
For checking and calibration, contact one of our accredited
metrology laboratories (information and contact details
available on request), at our Chauvin Arnoux subsidiary or
the branch in your country.
4.4. REPAIR
For all repairs before or after expiry of warranty, please return
the device to your distributor.

5. WARRANTY
Except as otherwise stated, our warranty is valid for twelve
months starting from the date on which the equipment was
sold. Extract from our General Conditions of Sale provided
on request.
The warranty does not apply in the following cases:
Inappropriate use of the equipment or use with incompat-
ible equipment;
Modifications made to the equipment without the explicit
permission of the manufacturer’s technical staff;
Work done on the device by a person not approved by
the manufacturer;
Adaptation to a particular application not anticipated in
the definition of the equipment or not indicated in the
user’s manual;
Damage caused by shocks, falls, or floods.
6. TO ORDER
C.A 760N voltage detector ............................P01191761Z
Delivered in blister pack with:
one red test probe 2mm in diameter,
one black lead terminated by a test probe 2mm in di-
ameter,
one strap,
two AAA or LR3 alkaline batteries,
one user’s manual in 5 languages,
one verification certificate.
6.1. ACCESSORIES
One red test probe 2mm in diameter .............. P01102008Z
Black lead with test probe 2mm in diameter.... P01102009Z
6.2. OPTIONS
1.5m lead with IP2X test probe ........................ P01295462Z
0.25m & 0.85m lead with IP2X test probe........ P01295285Z
Carrying bag..................................................... P01298012
C.A 751 2P+T adapter ...................................... P01101997Z