Chauvin Arnoux C.A 755 User manual

GB- User’s manual

SE - Bruksanvisning

FI - Käyttöohjeet

Digital tester

Spänningsprovare

Digitaalinen testeri

C.A 755

600 V

CAT III

1000 V max

COM

DIGITAL TESTER

Select

C.A 755

600 V CAT III

WARNING, risk of DANGER! The operator must

refer to these instructions whenever this danger

symbol appears.

Equipment protected by double insulation.

Battery. Earth.

Important information.

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.

ENGLISH

Thank you for purchasing this C.A 755 digital tester.

For best results from your instrument:

read these operating instructions carefully,

comply with the precautions for use.

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 tak-

en on circuits directly connected to low-voltage installations.

Example: power supply to electro-domestic devices and

portable tools.

Svenska ............................................. 16

Suomi ................................................ 30

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 600V in measurement category III.

Failure to observe the safety instructions may result in electric

shock, re, 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.

Do not use your instrument on networks of which the voltage

or category exceeds those stated.

Do not use the instrument if it seems to be damaged,

incomplete, or poorly closed.

Do not use the instrument in an explosive atmosphere or in

the presence of ammable gases or vapours.

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.

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 acces-

sories) to the lowest category and service voltage.

Use personal protection equipment systematically.

When handling the instrument and test probes, keep your

ngers behind the physical guard.

All troubleshooting and metrological checks must be done

by competent, accredited personnel.

CONTENTS

1. PRESENTATION...........................................................5

1.1. Delivery condition.............................................5

1.2. Accessories and spare parts ............................5

1.3. Inserting the batteries.......................................5

1.4. View of the C.A 755..........................................6

1.5. Back .................................................................7

2. USE ...............................................................................8

2.1. Instrument test..................................................8

2.2. Voltage .............................................................8

2.3. Resistance, continuity, diode and capacitance ..9

2.4. Non-contact voltage detection (NCV).............10

2.5. Automatic standby.......................................... 11

3. CHARACTERISTICS ..................................................12

3.1. Reference conditions......................................12

3.2. Electrical characteristics.................................12

3.3. Environmental conditions ...............................13

3.4. Power supply..................................................13

3.5. Characteristics of construction .......................14

3.6. Electrical safety ..............................................14

3.7. Electromagnetic compatibility.........................14

4. MAINTENANCE..........................................................15

4.1. Cleaning .........................................................15

4.2. Replacement of batteries ...............................15

5. WARRANTY................................................................15

1. PRESENTATION

1.1. DELIVERY CONDITION

C.A 755 digital tester

Delivered in a cardboard box with:

one red test probe 2 mm in diameter,

a black lead terminated by a removable black probe tip

2mm in diameter,

two alkaline batteries (AAA or LR3),

one user’s manual in ve languages,

a test certicate.

1.2. ACCESSORIES AND SPARE PARTS

Test probes 2mm in diameter and

4mm long (one red and one black)

600V CAT III

Test probes 2mm in diameter and

15mm long (one red and one black)

300V CAT II

Test probes 4mm in diameter and

19mm long (one red and one black)

300V CAT II

Carrying bag

LR3 or AAA batteries

C.A 753 2P+T adapter.

For the accessories and spares, consult our web site:

www.chauvin-arnoux.com

1.3. INSERTING THE BATTERIES

Use a screwdriver to unscrew the battery compartment cap.

Insert the two batteries provided (AAA

or LR3 1.5V alkaline batteries).

Screw the battery compartment cap

all the way back in and make sure that

it is completely and correctly closed.

Removable black probe. Removable red probe.

Backlit LCD display

unit.

Battery compartment

cap.

Key Select.

1.4. VIEW OF THE C.A 755

+ terminal.

Guards.

Four-position rotary

switch.

COM terminal.

Lead terminated by a

probe tip holder.

600 V

CAT III

1000 V max

COM

DIGITAL TESTER

Select

C.A 755

600 V CAT III

1.5. BACK

When the instrument is not being used, the probe tips can be

stored on the back of the instrument.

You can also wrap the lead around the instrument.

2. USE

This instrument is a digital tester. It measures AC and DC

voltages, resistances, and capacitances. It also has a conti-

nuity function and a diode function and can be used for non

contact voltage detection.

2.1. INSTRUMENT TEST

Before making any measurements, test all of the functions

of the instrument.

To switch the instrument on, turn the switch to any position.

All segments of the display unit light and the instrument

emits a continuous beep.

SCAN

If the battery voltage is too low for correct operation of the

instrument, the symbol is displayed.

If the battery voltage is much too low, the display unit

will not light.

In both cases, it is time to replace the batteries (see § 4.2).

With the inputs disconnected, set the switch to Ω. The

display unit indicates - - - -.

Connect the red probe tip to the +terminal and the black

probe tip to the COM terminal. Bring the two probe tips

together, so that they touch. The instrument indicates a

resistance near zero and emits a continuous beep.

Set the switch to Vand measure a known voltage.

If the results of these four tests are correct, your instrument

is ready for use.

2.2. VOLTAGE

Connect the red probe tip to the +terminal and the black

probe tip to the COM terminal.

Set the switch to V.

Keep your hands behind the guards of the device and of

the test probe.

COM

Select

Position beyond which your hands must not go.

Place the test probes on the element to be tested and

maintain a rm contact.

If the voltage is > 30V, the instrument displays , indicating

that the voltage is dangerous.

As default, the instrument is in automatic mode (

SCAN

). If the

voltage is AC, the instrument displays AC. If the voltage is

DC, it indicates DC and displays its polarity.

The Select key is used to exit from the automatic mode (the

SCAN

symbol disappears) and display the AC voltage only, or

the DC voltage only, or to return to the automatic mode.

To determine the type of voltage (AC or DC) for a measure-

ment < 1V, exit from the automatic mode.

Do not use the C.A 755 to check for the absence of a

voltage. For that, use a VAT.

2.3. RESISTANCE, CONTINUITY, DIODE AND

CAPACITANCE

Connect the red probe tip to the +terminal and the black

probe tip to the COM terminal.

Set the switch to Ω.

Keep your hands behind the guards of the device and of

the test probe.

Place the test probes on the element to be tested. If a

voltage is present, the instrument so indicates.

The voltage is displayed.

SCAN

COM

Select

Do not make a resistance, diode, continuity, or capac-

itance measurement on a live circuit.

As default, the instrument is in automatic mode (

SCAN

) and

chooses automatically among the resistance , continui-

ty , diode , and capacitance functions. To force

one of these functions, press the Select key (the

SCAN

symbol disappears).

Resistance and continuity

If the resistance is less than 300 Ω, the instrument is in

continuity.

SCAN

Below 30 Ω, it emits a continuous beep.

Between 300 Ωand 3 MΩ, the instrument is in resistance

mode. Above 3 MΩ, the display unit indicates OL. The 30 MΩ

range is not available in automatic mode; resistance mode

must be used.

Diode

In diode test, place the red probe tip on the anode of the

diode to be tested and the black probe tip on the cathode.

The instrument indicates the voltage of the diode. If it

is above 2V or if the polarity is reversed, the instrument

displays - - - -.

Capacitance

The 3mF and 30mF ranges are not available in automatic

mode; capacitance mode must be used.

If the device displays dis.C after a measurement, wait for

the end of automatic discharging of the capacitance before

making another measurement.

2.4. NON-CONTACT VOLTAGE DETECTION

(NCV)

The instrument can detect an AC voltage of approximately

230V.

Withdraw the probe tips.

Set the switch to NCV.

Move the top of the instrument (+ terminal side) close

to the conductor without touching it. The position of the

instrument may affect the result. The sensitivity is better

on the battery compartment cap side.

COM

Select

If no alternating voltage is detected, the device displays EF.

If a voltage is detected, the device displays one of 4 detec-

tion levels:

- , the buzzer beeps once a second and the backlighting

ashes at the same rate.

- - , the buzzer beeps twice a second and the backlighting

ashes at the same rate.

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