C.A 6423
Contents
1. CONTR LEUR DE TERRE EARTH TESTER ERDUNGSPR FER STRUMENTO DI CONTROLLO DELLA TERRA CONTROLADORDETIERRA C A 6423 FRANCAIS Mode d Emploi ENGLISH User s Manual DEUTSCH Bedienungsanleitung ITALIANO Libretto d Istruzioni ESPANOL Manual de Instrucciones gt xc gt E lt O c xZ English Meaning of symbol Warning Consult the User s manual before using the instrument You have just acquired an Earth Tester and we thank you for your confidence To get the best service from your instrument read carefully this user s manual respect the safety precautions in it stick the label corresponding to your language on the back of the instrument SAFETY IN USE WB Before connecting up the 6423 check that no dangerous voltage is present at the earth to be measured Wi Before opening the battery compartment ensure that no measurement lead is connected to the instrument WARRANTY Unless notified to the contrary our instruments are guaranteed from any manufacturing defect or material defect They do not bear the specification known as the safety specification Our guarantee which may not under any circumstances exceed the amount of the invoiced price goes no further than the repair of our faulty equipment carriage paid to our workshops Itis applicable for normal use of our instruments and does not apply to damage or destruction caused notably by error in mounting mechanical acc2. between 4 and 8 s depending on measurement conditions DISTORTION QUANTITIES Operating limits Max variation Temperature 10 455 C 1 rdg 1 pt per 10 C Relative humidity 20 90 2 rdg 5 pt Operating voltage 8 8 12 5V 1 rdg 1 pt per Volt Voltage circuit load 1 50 kw 1 rdg per 10 kw 4 pt Current circuit load 2 0 00 19 99 w 30 kw 1 rdg per 10kw 2 pt 20 00 199 9 w 30 kW 1 rdg per 10 kW 2p 200 0 1999 W 50 kW 1 rdg per 10kW 2p DC voltage 0 20V 3 negligeable AC interference voltages on H 0 23 or 32V peak 2 rdg 2 AC interference voltages on S 0 9V 13V peak t 0 5 rdg t 2g 1 Resistance measured or resistance of rod E resistance of rod S resistance of leads 2 Resistance measured or resistance of rod E resistance of rod resistance of leads 3 Possible flashing of HIGH RESISTANCE indicator above 4 5 V ELECTRICAL SPECIFICATIONS Power supply 8 batteries R6 alkaline 1 5 V or 8 accumulators Range of voltage permitted 8 8 12 5V Average battery life 1800 measurements of 15 seconds at 23 3 K with 8 alkaline batteries permanent test of remaining battery life DISPLAY Display LCD 7 segments height 18 mm 2000 counts 312 digits direct reading w Low battery indicator LO BAT message Overload indicator display of 1 I
3. S and H 3 Drive in completely if possible the input earth rod H at a distance a from the earth point E to be measured Note this distance is further for a deep and extended earth point larger range of influence 4 Drive in the rod S at 62 of the distance between the earth E and the rod the rods S H and the earth point must be in line 5 Connect the rods to their respective terminals with the leads 6 Press the MEASURE button 1i and hold the button during measurement Check that none of the three indicators are flashing otherwise check the wiring see Ch 3 4 FAULT SIGNALS and make the measurement again Measurement of resistance of earth point earth bar point 0 52 62 72 100 Checking the measurement 7 Note the displayed value 8 Wait for a few moments and then re measure 9 Move rod S by 1096 towards H along the line between the earth point E and the rod H Measure and note the result 10 From its initial position move rod S by 1096 towards E along the line between the earth point E and the rod H If the three values are of the same order of magnitude the earth measurement is correct If not increase the distance a and repeat the measurements A Do not forget to reconnect the earth point after the measurement 3 2 MEASUREMENT OF RESISTANCE This measurement can be performed to determine the coupling resistance between two earth points For example between the neutral and ground ea
4. d non use remove the batteries from their compartment Store the instrument only in the specified environmental conditions see Ch 4 SPECIFICATIONS 5 2 CALIBRATION CHECK It is essential that all measuring instruments are regularly calibrated For occasional daily use we recommend that an annual calibration be carried out When the instrument is used continuously every day we recommend that calibration is carried out every 6 months For calibration and repair of your instrument please contact our COFRAC BNM accredited laboratories CHAUVIN ARNOUX Pont l Ev que France 33 31 64 51 11 MANUMESURE Lyon France 33 78 26 68 04 Or the CHAUVIN ARNOUX subsidiary or Agent in your country 5 3 REPAIR Repairs under or out of guarantee Please return the product to your distributor 6 TO ORDER 6423 EARTH TESTER eessen ref P01 1270 13 supplied with batteries carrying strap and User s manual Accessory for C A 6423 a Shoulder Dag octo cem ctp aenea ref P01 2980 06 Spares for C A 6423 _ Cartyug Strap o t NP RE ER ref P01 2980 05 M HBC fuse 0 1 A 250 V pack of 10 ref P01 2970 12 M Battery 1 5 V alkaline TRO pack of 8 ref 01 1007 74 Measurement accessories PRESTIGE EARTH ACCESSORIES Hi sss ref P01 1018 24 Semi rigid bag comprising two T shaped smooth rods 100 m of red lead on reel 60 m of blue lead cn reel 10 m of green lead on reel grou
5. e fuse is blown Check the rods the leads the connections and the fuse see Ch 5 1 3 k Flashing of HIGH RESISTANCE indicator 9 Fault in the voltage circuit E S At the start of the measurement the instrument automatically checks the resistance between E and S If this is greater than 50 kw the indicator 9 begins to flash This means that the measurement is likely to be very affected by the resistance of the voltage circuit NB The indicator flashes throughout the measurement even if the resistance falls below 50 kw during it Check the rods the leads and their connections WI Flashing of HIGH NOISE indicator Presence of interference voltages in the voltage circuit Flashing indicates noise greater than 13 Vea between terminals E and S These interference signals disturb the measurement Move the roas 4 SPECIFICATIONS REFERENCE CONDITIONS Temperature 23 3K Relative humidity 45 lt RH lt 55 Supply voltage 10 5V 0 2V Auxiliary resistances R R and nil AC and DC interference voltages nil Electric field 1 V m Magnetic field lt 40 A m METROLOGICAL SPECIFICATIONS Measurementrange Resolution Measurement current Accuracy Empty voltage automatic range square signal 128 Hz 0 00 19 99 w 0 01 w 10mA 2 rdg 1 pt amp 42 20 00 199 9 w 0 1w 1mA 2 rdg 1 pt amp 42 200 0 1999 w 1 100 pA 2 rdg 3pt 42 Va Response time
6. ident faulty maintenance defective use overload or excess voltage Our responsability being strictly limited to the pure and simple replacement of the faulty parts of our equipment the buyer expressly renounces any attempt to find us responsible for damages or losses caused directly or indirectly Our guarantee is applicable for twelve 12 months after the date on which the equipment is made available The repair modification or replacement of a part during the guarantee period will not result in this guarantee being extended SUMMARY Page PRESENTATION n ERROREM NRI e 16 tanh ted tat 17 OPERATING er oe eb 18 3 1 Measurement of resistance of an earth point 18 3 2 Measurement of resistance 19 3 9 Fault signals ee el ei Ae bm 20 SPECIFICATIONS suelen tete pet de gei ette 21 MAINTENANCE e Rd C a dest oig ies bats des 5 1 Normal cleaning 5 2 Calibration check 5 3 e ete dete ANI ed STO ORDER idee dt S B d ead ce e ds 26 1 PRESENTATION Autonomous and watertight this tester is a worksite instrument designed for earth resistance measurements It is particularly suited to measurements in difficult conditions such as when there are stray voltages present high telluric currents high value auxiliary electrode resistances etc For ea
7. nd of 1 kg Spares for measurement accessories E Semi rigid bag P01 2980 26 M Smooth T shaped rod Ms P01 1018 29 Bl 100 m red Lead ori reel uet ce rece ref P01 2950 45 60 m blue lead on reel ttt ref P01 2950 44 E 10 m green lead reel iiie Cd t b Ru ref P01 2950 41
8. ndicator of lead reversal sign preceding the measurement Indicator of current circuit fault by flashing red FAULT E H LED Indicator of voltage circuit fault W Resistance too high Interference noise by flashing red HIGH RESISTANCE E S LED by flashing red HIGH NOISE E S LED MECHANICAL SPECIFICATIONS Protection index IP 54 in accordance with IEC 529 and NF EN 60 529 Free drop 25 cm in accordance with IEC 68 2 32 Shock resistance 50 g g 9 81 m s in accordance with IEC 68 2 27 Resistance to impacts IK 04 in accordance with NF EN 50 102 Vibration resistance 1 mm from 10 to 55 Hz in accordance with IEC 68 2 6 Dimensions W x H x D 238 x 136 x 150 mm Connection of leads on 3 colour coded terminals for 4 mm banana plugs or 6 mm spade clips CLIMATIC CONDITIONS Humidity in RH 80 70 60 50 40 30 0 A 40 X Dl zi WB Nominal refer e Ill Operating rang 7 7 Storage range CONFORMITY WITH STANDARDS Electrical safety in accordance with IEC 1010 1 Double insulatio Installation category 111 Degree of pollution 2 Service voltage 42 V Electromagnetic compatibility W Emission in accordance with EN 50081 1 W immunity in accordance with EN 50082 1 5 MAINTENANCE For maintenance use only specified spare parts The manufacturer will not be held responsible for any accident occ
9. rth points EDF distribution Cut the power supply of the installations For measurement of the coupling resistance disconnect the earths Short circuit terminals S and H using the bar provided 4 2 Connect terminal E to the earth of the ground and terminal H to the earth of the neutral 3 Press the MEASURE button 13 and hold down until the measurement is displayed Check that none of the three indicators are flashing otherwise check the connections see Ch 3 4 FAULT SIGNALS and repeat the measurements 2 wire resistance measurement NB In the case of low value resistances it becomes necessary to take into account the resistance of the leads approx 22 5 mw m for those supplied as accessories To overcome the resistance of the leads we advise the use of a 4 pole Earth Resistivity Tester on 4 wire connection A Do not forget to reconnect the earth points after measurement 3 3 FAULT SIGNALS Display of a negative measurement Reversal of rods and E or rods S and E Re connect the leads correctly B Displayed measurement value is 1 Overrange R 2000 w Check the connections E Flashing of FAULT light 8 Fault in current circuit E H Flashing indicates that the voltage between the terminals E and H is greater than 30 V sd This may mean that the resistance of the current circuit between E and H is too high the interference voltage in the circuit E H is too high th
10. se of use this instrument has the following features a single press button to trigger the measurement an autoranging system for measurement range switching a large digital display which is readable even in shadow three indicators that signal the presence of faults which can lead to errors during measurement three colour coded screw terminals to simplify connection of leads an attached connection rod 2 DESCRIPTION Measurement input terminal E green Measurement input terminal S blue Measurement input terminal H red Attached rod S H for 2 wire resistance measurement 2000 count digital LCD Low battery indicator Reverse connection indicator Current circuit fault indicator E H Voltage circuit fault indicator E S Indicator of presence of interference on voltage circuit E S Measurement press button OOGGOOGOGO egyo ESCGRCGUIT CHAUVIN p ARNOUX EARTH TESTER 3 OPERATING MODE 3 1 MEASUREMENT OF THE RESISTANCE OF AN EARTH POINT To measure the resistance of an earth conductor the so called 6296 method is in general recommended This measurement requires the use of the items in the Earth Kit see Ch 6 TO ORDER Cut the power supply to the installation and disconnect it from the earth by opening the earth bar Connect terminal E to the earth to be measured 2 Check that the bar 4 is not present between terminals
11. urring following a repair done other than by its after sales service or approved repairers 5 1 NORMAL CLEANING 5 1 1 Cleaning Preferably use a damp cloth or a sponge slightly moistened with soapy water Do not use alcohol petrol or other products based on hydrocarbons 5 1 2 Replacing batteries or accumulators The test of remaining battery life is automatic and permanent At the first appearance of the LO BAT message the instrument still has sufficient power for a few measurements The batteries must be changed within a short time Before changing the batteries ensure that no lead is connected to the instrument A All the batteries must be replaced at the same time Do not mix together batteries and accumulators Undo the attached screws located under the instrument which give access to the battery compartment Replace the 8 used batteries by 8 new ones of the same type according to the polarity Refit the cover of the battery compartment 5 1 3 Replacing the fuse The indicator may be flashing because the fuse protecting the current circuit has blown To check short circuit terminals E and H with bar O open and the measurement leads disconnected If the FAULT light still flashes the fuse must be changed To do this remove the cover of the battery compartment unscrew the fuse holder and pull out the fuse Replace it with a new one of the same type 0 1 A 250 V Refit the battery cover 5 1 4 Storage In case of prolonge
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