Chauvin arnoux C.A 6533, C.A 6531 User Manual

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■MEGOHMMETRES

■MEGOHMMETERS

■MEGOHMMETER

■MEGAOHMMETRI

■MEGAÓHMETROS

C.A 6531 C.A 6533

F R A N Ç A I S	Notice de fonctionnement
E N G L I S H	User's manual
D E U T S C H	Bedienungsanleitung
I T A L I A N O	Libretto d’Istruzioni
E S P A N O L	Manual de Instrucciones

English

Meaning of the symbol

Warning ! Please refer to the User’s Manual before using the instrument.

In this User’s Manual, the instructions preceded by the above symbol, should they not be carried out as shown, can result in a physical accident or dammage the instrument and the installations.

Meaning of the

symbol

This device is protected by a double insulation or by a reinforced insulation. No linking is required from the protection earth terminal to ensure the electrical security.

Meaning of the symbol Warning ! Risk of electric shock.

The voltage of the parts marked with this symbol may be dangerous. For safety reasons, this symbol will light up on the LCD screen as soon as a voltage is generated.

Thank you for purchasing a C.A 6531 or C.A 6533 insulation tester.

To get the best service from this instrument :

■read this user’s manual carefully

■respect the safety precautions detailed

PRECAUTIONS FOR USE

■Comply with the conditions for use : temperature, humidity, altitude, degree of pollution and place of use

■This instrument can be used on category-III installations for voltages not exceeding 600 V in relation to the earth. Category

III meets severe reliability and availability requirements, corresponding to permanent use on fixed industrial installations (see IEC 1010-1 + A2).

■Use connection accessories that comply with the applicable IEC safety standards, with a minimum voltage and voltage surge category at least equal to those that you use for your measurements.

■Respect the value and type of the fuse to avoid damaging the instrument and cancelling the warranty.

■Set the switch to OFF when the instrument is not in use.

■Do not perform any insulation or resistance measurements when the presence of a voltage is indicated.

■Check that none of the terminals is connected and that the switch is set to OFF before opening the instrument.

CONTENTS

1.	PRESENTATION ................................................		26
1.1	General Presentation ...................................................		26
	1.1.1	The Megohmmeter ..........................................	26
	1.1.2	Accessories .....................................................	26
2.	DESCRIPTION ...................................................		27
2.1	Housing .........................................................................		27
	2.1.1	C.A 6531 ..........................................................	27
	2.1.2	C.A 6533 ..........................................................	27
2.2	Display	..........................................................................	27
	2.2.1	Symbols ...........................................................	27
	2.2.2	Bargraph ..........................................................	28
	2.2.3	Digital display ...................................................	28
2.3	Control keyboard ..........................................................		28
	2.3.1	Yellow key ........................................................	28
	2.3.2	ALARM key ......................................................	28
	2.3.3	Key .............................................................	28
	2.3.4	Key .............................................................	29
	2.3.5	Key ............................................................	29
	2.3.6	DREL key .........................................................	29
3.	MEASUREMENT FUNCTIONS .........................		29
3.1	Insulation ......................................................................		29
	3.1.1 AC / DC voltage measurement ........................		29
	3.1.2	Insulation Measurement ..................................	30
3.2	Resistance ....................................................................		30
3.3	Capacitance (C.A 6531) ...............................................		31
3.4	AC / DC current (C.A 6531) ..........................................		31
3.5	AC voltage (C.A 6531) ..................................................		31
4.	SPECIAL FUNCTIONS ......................................		31
4.1	Start/stop ......................................................................		31
4.2	Automatic shutdown .....................................................		32

4.2.1Deactivation of the automatic

		shutdown function ............................................	32
4.3	Autotests .......................................................................		32
	4.3.1	Power supply ...................................................	32
	4.3.2	Fuse (C.A 6531) ..............................................	32
4.4	Buzzer	...........................................................................	32
	4.4.1 The different audible signals ...........................		32
	4.4.2 ...............................	Deactivation of the buzzer	33
4.5	Alarm thresholds ..........................................................		33
	4.5.1 .............Programming of the alarm thresholds		33
	4.5.2	Activation/deactivation
	....................................	of the alarm thresholds	34
	4.5.3 .....................................Triggering of the alarm		34
4.6	Relative ...................................measurements (DREL)		34
4.7	Programming the capacitance
	per unit ............................................length (C.A 6531)		34

5.	USE ....................................................................		35
5.1	AC / DC voltage and insulation measurement		............. 35
5.2	Resistance measurement ............................................		36
5.3	Capacitance measurement (C.A 6531) ........................		36
5.4	AC / DC current measurement (C.A 6531) ..................		36
5.5	AC voltage measurement (C.A 6531) ..........................		36
6.	SPECIFICATIONS .............................................		37
6.1	Reference conditions ....................................................		37
6.2	Characteristics per function ..........................................		37
	6.2.1	Voltage .............................................................	37
	6.2.2	Insulation .........................................................	37
	6.2.3	Resistance .......................................................	38
	6.2.4	Capacitance (C.A 6531) ..................................	38
	6.2.5	Distance (C.A 6531) ........................................	38
	6.2.6 AC / DC current (C.A 6531) .............................		38
	6.2.7 AC voltage (C.A 6531) .....................................		39
6.3	Power supply ................................................................		39
6.4.	Climatic conditions .......................................................		39
6.5. Variations in nominal field of use .................................			40
6.6.	Limits ............................................................................		40
6.7.	Construction specifications ..........................................		40
6.8.	Compliance with international standards .....................		40

6.8.1.Electromagnetic compatibility: EC compliance41

	6.8.2.	Mechanical protection .....................................	41
7.	MAINTENANCE .................................................		41
7.1.	Upkeep	..........................................................................	41
	7.1.1.	Replacing the batteries ....................................	41
	7.1.2. Replacing the fuse (C.A 6531) ........................		41
	7.1.3.	Cleaning ...........................................................	42
	7.1.4.	Storage ............................................................	42
	7.1.5.	Calibration ........................................................	42
7.2.	Maintenance .................................................................		42
8.	WARRANTY ......................................................		42
9.	TO ORDER ........................................................		43
10.	ATTACHMENT ................................................		107
10.1 Front views ................................................................			107
	10.1.1. C.A 6531 ......................................................		107
	10.1.2. C.A 6533 ......................................................		108
10.2. Examples of applications ..........................................			109
	10.2.1. Insulation measurements
		on electrical installations ..............................	109
	10.2.2. Measurement on electrical or telecom cable ....		110
	10.2.3. Capacitance measurement
		between wires (C.A 6531) ............................	111
	10.2.4 Insulation measurements on motors ............		112
10.3 Accessories ...............................................................			113
	10.3.1. Shoulder bag ................................................		113
	10.3.2. Use of the shoulder bag ...............................		113
	10.3.3. Remote control probe ...................................		114

1.PRESENTATION

1.1General Presentation

1.1.1 The Megohmmeter

These portable instruments function with batteries or a vehicle battery.

They can be used to check insulation and voltages and to measure resistances.

The C.A 6531 can also be used for:

■measurement of the capacitance of a telephone line

■current measurement

■measurement of the pure alternating component of a DC voltage.

These megohmmeters help to ensure the safety of electrical and telephone installations.

The acquisition, processing and display of the measurements are managed by a microprocessor.

They offer a wide range of advantages such as:

■automatic detection of the presence of a dangerous voltage on the terminals in MW calibres (all insulation measurement blocked if U > 25 V),

■protection of the instrument against external voltage surges,

■operator safety by means of automatic discharge of the high voltage on the equipment tested,

■display of the difference compared to a measurement value in memory,

■measurement of the length of a telephone line according to its capacitance per km unit length (C.A 6531),

■automatic shutdown of the instrument to save the batteries and indication of the battery charge,

■fuse testing by periodic checks during current measurement

(C.A 6531),

■a large backlit LCD screen with a wide range of indicators making it very easy for the user to read.

1.1.2 Accessories

■ Carrying bag (part of standard delivery, see § 10)

When placed in the carrying bag, the instrument can either be carried on the shoulder to transport it or around the neck for use. This leaves the users’ hands free to perform the measurements. Since the instrument is perpendicular to the chest, it is easy to read.

At the bottom of the shoulder bag, underneath the instrument, there is a pocket for the leads, the touch prod, the crocodile clamp and the remote control probe.

■ Remote control probe (option, see § 10)

This probe is plugged in to a special connector.

It can be used for all the measurements, including activation of insulation testing, using the yellow button which works in exactly the same way as the button on the instrument.

A pushbutton on the back of the probe allows you to light the measuring point (approx. 500 lux). This function is very useful, since insulation testing is performed on installations with the power off!

2. DESCRIPTION

2.1Housing

See the diagrams of the instruments in § 10 (appendix at the end of this user’s manual)

2.1.1 C.A 6531

3 safety terminals, Ø 4 mm (marked “mA”, “ + “ and “ - “) Next to the “ – “ terminal, there are two additional contacts for connecting the remote control probe (3-point connector).

7-position switch:

OFF, MW - 50 V, MW - 100 V, 40 kW , 4000 nF, 400 mA, 400 V~

Keys: Yellow (to activate insulation measurement), ALARM,

,, and DREL.

Backlit liquid crystal display

Battery compartment + stand (not shown in the drawing)

2.1.2 C.A 6533

2 x 4 mm Ø safety terminals (labelled “ + ” and “ G “), a 3- point jack for the guarded lead or the remote control probe (labelled “ - “).

6-position switch:

OFF, MW - 50 V, MW - 100 V, MW - 250 V, MW - 500 V, 400 kW

Keys: yellow (to activate insulation measurement), ALARM,

,, and DREL.

Backlit liquid crystal display

Battery compartment + stand (not shown in the drawing)

2.2Display

2.2.1 Symbols

ALARM Threshold active or threshold programming in progress

> Upper threshold

<Lower threshold

Dangerous voltage generated (only comes on if test at 50 V)

See the user’s manual

> 25 V Voltage > 25 V present on the instrument’s terminals DREL Difference between actual measurement and measurement in memory (does not function for voltage

on the MW positions)

Buzzer active

P Constant operation (no automatic shutdown)

Batteries flat

2.2.2 Bargraph

Insulation > 1.1 GW

Insulation < 70 kW

2.2.3 Digital display

BAT Batteries low – must be changed OL Range exceeded

-- - Insulation < 10 kW at 50 V, < 20 kW at 100 V,

<50 kW at 250 V, < 100 kW at 500 V

2.3Control keyboard

2.3.1 Yellow key

When this yellow key is pressed, a high voltage is generated for insulation testing. However, if a voltage greater than 25 V has been detected, no insulation testing is allowed and the key becomes inactive. The instrument remains in voltage measurement mode.

2.3.2 ALARM key

The ALARM key can be used to activate/deactivate the alarm thresholds during insulation and resistance measurements.

When associated with the and keys, it can be used to program the values of these thresholds.