CHAUVIN ARNOUX C.A 742 Voltage Detector User Manual

CHAUVIN ARNOUX C.A 742 Voltage Detector

Thank you for purchasing a C.A 742 voltage detector.
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.
Equipment protected by double insulation.
Equipment suitable for live work.
Battery.
Earth.
The CE marking indicates compliance with the European Low Voltage Directive (2014/35/EU), Electromagnetic Compatibility Directive (2014/30/EU), and Restriction of Hazardous Substances Directive (RoHS, 2011/65/EU and 2015/863/EU).
The UKCA marking certifies that the product is compliant with the requirements that apply in the United Kingdom, in particular as regards Low-Voltage Safety, Electromagnetic Compatibility, and the Restriction of Hazardous Substances.
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 2012/19/EU. 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 tak-en on circuits directly connected to low-voltage installations. Example: power supply to domestic electrical appliances and portable tools.

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 installation being measured.
• 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 must be kept clean so that the condition of the cable insulators, housing, and accessories can be checked. Any component whose insulator is damaged (even partially) must be sent for repair or scrapped.
• 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.

PRESENTATION

DELIVERY CONDITION
C.A 742 voltage detector
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,
• wo AAA or LR3 alkaline batteries,
• one user’s manual in 5 languages,
• one verification certificate.

ACCESSORIES AND OPTIONS

• One red test probe 2mm in diameter
• Black lead with test probe 2mm in diameter
• IP2X accessories
• Carrying bag
• C.A 751 2P+T adapter

For accessories and spare parts, visit our website: www.chauvin- arnoux.com

FUNCTIONS
The C.A 742 is a Voltage Detector with indicator lights.
It complies with the requirements of standard IEC 61243-3.
The main function of the C.A 742 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).
Its other functions are:

• Indication of a voltage between 12 and 690 Vac or 750 Vdc, with indication of the polarity.
• Continuity indication.
• Indication of the phase position.

The voltages indicated on the C.A 742 are nominal volt-ages. Make sure that the device will be used on networks at standardized voltages.

C.A 742 ON THE BACK
When the device is not in use, the test probes can be stowed on the back .

USE

This device is a detector. The indications it provides must not be used for measurement purposes.

SELF-TEST
Before using the C.A 742, perform a self-test. This checks the integrity of the leads, the proper operation of the electronic 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 sounds, the device is working properly and can be used.

• If every other indicator lights, the batteries must be re-placed (see §4.2).

• If every third indicator is off, the leads and test probes need to be checked. Check that they are correctly connected and that the test probes are actually touching, then press the AUTO TEST button again.
  If the problem persists, replace the batteries and try again. If the problem persists with new batteries, the lead and/or the test probes must be replaced.

• 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.

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.

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 maintain a firm contact.
There is no need to switch the C.A 742 on, because it starts up automatically.

If the voltage present is:

• AC, the indicators light to indicate its value and the + (green) and – (orange) indicators light.
• DC, the indicators light to indicate its value and the + indicator (green) or the – indicator (orange) lights to indicate the polarity.
• 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 there is a perturbing voltage near the element being tested, the device may indicate the presence of an operating voltage on the element being tested.

CONTINUITY 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 maintain a firm contact .

Keep the button pressed.

If no voltage is detected, the C.A 742 performs a continuity test.

• If the resistance is below the continuity threshold, indica-tors 12 to 230 flash one after another. The device emits a continuous audible signal.
• If the resistance is above the continuity threshold, the device displays nothing and does not emit a sound.

PHASE DETECTION
The C.A 742 performs a unipolar phase detection. This means that connecting a single test probe is enough to determine whether a phase is present.
Warning: Phase detection cannot replace an absence of voltage test.
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.
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 maintain 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.

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 742 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 742, then refer to the operating instructions of the CA.751.

CHARACTERISTICS

REFERENCE CONDITIONS

ELECTRICAL CHARACTERISTICS

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 >300kΩ.
• 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 742 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).

CONTINUITY
Continuity detection is disabled if a voltage > 1V is present. Triggering threshold between 100Ω and 150Ω.
Test current ≤1mA
Open-circuit voltage ≤3.3V

PHASE IDENTIFICATION
120 Vac<voltage<690 Vac and 45Hz≤frequency ≤65Hz
400 Vac<voltage<690 Vac and 16.67Hz≤frequency<45Hz

ENVIRONMENTAL CONDITIONS

The device is of type N. It must be used under the following conditions:
%RH

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.
   Pollution degree: 2.
   Altitude: <2000m.

ALIMENTATION
The C.A 742 is powered by two 1.5V alkaline batteries (type AAA or LR3).
Batteries mass: about 2 x 26 g
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.

CHARACTERISTICS OF CONSTRUCTION

• Dimensions (LxWxH) 163 x 64 x 40mm

• Mass approximately 210g

• Cord length 90cm

• Protection class IP65 per IEC 60529
  IK04 per IEC 62262

• Drop 2 metres

COMPLIANCE WITH INTERNATIONAL STANDARDS
Two-pole voltage detector per IEC 61243-3 ed. 3 of 2015.
The device is in conformity with IEC/EN 61010-1 or BS EN 61010-1 600V, CAT IV.

ELECTROMAGNETIC COMPATIBILITY
Emissions and immunity in an industrial setting compliant with IEC/EN 61326-1 or BS EN 61326-1.

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.

CLEANING
The device must be kept perfectly clean.
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.

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.

WARRANTY

Except as otherwise stated, our warranty is valid for 24 months starting from the date on which the equipment was sold. The extract from our General Conditions of Sale is avail-able on our website.
www.chauvin-arnoux.com/en/general-terms-of-sale
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.

FRANCE
Chauvin Arnoux
Tél : +33 1 44 85 44 85
Fax : +33 1 46 27 73 89
info@chauvin-arnoux.com
www.chauvin-arnoux.com

INTERNATIONAL
Chauvin Arnoux
Tél : +33 1 44 85 44 38
Fax : +33 1 46 27 95 69
Our international contacts www.chauvin-arnoux.com/contacts

References

• Untitled Document
• General Terms of Sale | Chauvin Arnoux Metrix
• Conditions générales de vente | Chauvin Arnoux Metrix
• Condizioni generali di vendita | Chauvin Arnoux Metrix

Read User Manual Online (PDF format)

Read User Manual Online (PDF format)  >>

Download This Manual (PDF format)

Download this manual  >>