EN - User s manual MX 409. Megohmmeter

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1 EN - User s manual MX 409 Megohmmeter

2 Thank you for purchasing a megohmmeter MX 409. 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. Information or useful tip. Earth. Battery. Fusible. 770 The voltage on the terminals must not exceed 700. Equipment protected by double insulation. The product is declared recyclable following an analysis of the life cycle in accordance with standard ISO 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 LD 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 2012/19/EU. Definition of measurement categories Measurement category I 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 installations. Example: power supply to electro-domestic devices and portable tools. PRECAUTIONS FOR USE This instrument is compliant with safety standard IEC and the leads are compliant with IEC , for voltages up to 600 in category I. Do not use the instrument for measurements on circuits that are not in measurement categories II, III, or I or that might be connected inadvertently to circuits that are not in measurement categories II, III, or I. 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. If you use this instrument other than as specified, the protection it provides may be compromised, thereby endangering you. Do not use the instrument on networks of which the voltage or category exceeds those mentioned. Do not use the instrument if it seems to be damaged, incomplete, or poorly closed. 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. Before using your instrument, check that it is perfectly dry. If it is wet, it must be thoroughly dried before it can be connected or used. Use only the leads and accessories supplied. The use of leads (or accessories) of a lower voltage or category limits the voltage or category of the combined instrument and leads (or accessories) to that of the leads (or accessories). Use personal protection equipment systematically. When handling the leads, test probes, and crocodile clips, keep your fingers behind the physical guard. All troubleshooting and metrological checks must be performed by competent and accredited personnel. 2

3 CONTENTS 1. FIRST START-UP Unpacking Accessories and spares Inserting the batteries Using the protective sheath PRESENTATION OF THE INSTRUMENT MX Functions Display Keys and button USE Checking the operation of the instrument oltage measurement Insulation resistance measurement Continuity measurement Resistance measurement HOLD function Backlighting SET-UP Alarm function Programmed duration Automatic stop TECHNICAL CHARACTERISTICS General reference conditions Electrical characteristics ariations in the range of use Intrinsic uncertainty and operating uncertainty Power supply Environmental conditions Mechanical characteristics Compliance with international standards Electromagnetic compatibility (CEM) MAINTENANCE Cleaning Replacing the batteries Replacing the fuse Calibrating the instrument WARRANTY

4 190, rue Championnet PARIS Cedex 18 FRANCE érifié par : Tested by ATTESTATION DE ERIFICATION CHECKING ATTESTATION Numéro de l'appareil : Equipment number Établi en usine, ce document atteste que le produit ci-dessus a été vérifié et est conforme aux conditions d'acceptation définies dans nos procédures de fabrication et de contrôle. Tous les moyens de mesure et d'essai utilisés pour vérifier cet appareil sont raccordés aux étalons nationaux et internationaux soit par l'intermédiaire d'un de nos laboratoires de métrologie accrédités COFRAC soit par un autre laboratoire accrédité. Après sa mise en service, cet instrument doit être vérifié à intervalle régulier auprès d'un service de métrologie agréé. Pour tout renseignement veuillez contacter notre service après vente et d'étalonnage. At the time of manufacture, this document certifies that the above product have been verified and complies with acceptance conditions defined in our manufacturing and testing procedures. Every test or measuring equipment used to verify this instrument are related to national and international standards through one of our laboratories of metrology certified by french COFRAC equivalent to NAMAS in the UK or through another certified laboratory. After being in use, this instrument must be recalibrated within regular intervals by an approved metrology laboratory. Please contact our after sales and calibration department: Service après vente et d'étalonnage TEL: +33 (2) FAX: +33 (2) After sales and calibration department WEB : Type / Model : Désignation de l'instrument : Instrument designation ATTESTATION DE CONFORMITE COMPLIANCE ATTESTATION Signature : Signature Nous certifions que ce produit a été fabriqué conformément aux spécifications techniques de constuction applicables. We certify that this product is manufactured in accordance with applicable constructing specifications /03 1. FIRST START-UP 1.1. UNPACKING MX 409 MEGHOMMETER ➀ ➁ ➂ ➃ ➄ ➅ ➆ ➇ ➈ ➉ 1 One MX Two straight/right-angle safety leads (red and black). 3 One red crocodile clip. 4 One black test probe. 5 One protective sheath fitted on the instrument. 6 Six LR6 or AA batteries. 7 One carrying case. 8 One multilingual safety data sheet. 9 One multilingual getting started guide 10 One certificate of verification ACCESSORIES AND SPARES For the accessories and spares, consult our web site: 4

5 1.3. INSERTING THE BATTERIES Remove the protective sheath. Start by freeing the case from the top of the sheath. Then withdraw the case from the sheath. Turn the instrument over. Use a screwdriver to unscrew the captive screw of the battery compartment cover, then remove the cover. Insert the 6 batteries provided, with the polarities as shown. Put the battery compartment cover back in place; make sure that it is completely and correctly closed. Screw the captive screw back in. Put the sheath back on the instrument, from the bottom. 5

6 1.4. USING THE PROTECTIE SHEATH You can place your instrument upright on its back stand. To do this, pull the back stand down, to free it from its slot, then fold it and insert the end in the other slot. The stand can also be used to hook the instrument on a door. 6

7 2. PRESENTATION OF THE INSTRUMENT 2.1. MX 409 MX 409 MEGOHMMETER HOLD REL 0 P % ma Backlit LCD display unit. AC + DC G M NOISE TEST button. HOLD SET-UP OFF function keys M Seven-position switch. 600 CAT I FUSED 700 max Measurement terminals. 7

8 2.2. FUNCTIONS The megohmmeter MX 409 is a portable measuring instrument, with LCD display. Powered by batteries. This instrument is used to check the safety of electrical installations. It can be used to test a new installation before it is powered up, to check an existing installation, whether in operation or not, or to diagnose a malfunction in an installation. The MX 409 is used to make: voltage measurements, insulation measurements at 250, 500, and 1000, continuity measurements, resistance measurements. The alarm function of the MX 409 makes it possible to check that the readings are OK rapidly, without looking at the display unit DISPLAY ➀ ➁ ➂ ➃ ➄ HOLD REL 0 P % ma ➅ AC + DC G M NOISE ➆ ➇ ➈ ➉ Indicates that the measurement is frozen. 2 Indicates that the DMR function (Differential Mode Resistance or relative mode) is active in a resistance measurement. 3 Indicates that the resistance of the leads is compensated in a continuity measurement. 4 Indicates that auto-off is deactivated. 5 Indicates the condition of the batteries. 6 Secondary display unit. 7 Main display unit. 8 Indicates whether the measurement is OK or not with respect to the alarm threshold. 9 Indicates the presence of a hazardous voltage on the terminals 10 Indicates that the alarm is active in an insulation or DMR measurement. 11 Indicates that the beep is activated. 12 Indicates a spurious voltage in a continuity or resistance measurement. 8

9 2.4. KEYS AND BUTTON TEST BUTTON Pressing the TEST button starts an insulation measurement. It also serves to confirm a programmed threshold. In resistance measurement, it is used to enter the DMR mode and record the reference measurement. And also to exit from the DMR mode FUNCTION KEYS Key HOLD Function Pressing the key freezes or unfreezes the measurement. In SET-UP mode, the function of the key is. In insulation measurement, pressing the key activates or deactivates the alarm. In continuity measurement, pressing the key activates or deactivates the alarm beep. In resistance measurement, pressing the key activates or deactivates the DMR alarm beep. In voltage measurement, the key is pressed to choose between AC+DC measurement or DC only. In the SET-UP mode, the function of the key is. SET-UP In insulation measurement, the TIMER key is used to select the and functions. In insulation measurement, a long press on the key sets the alarm threshold corresponding to the test voltage. In continuity measurement, a long press on the key serves to choose the alarm threshold. In resistance measurement, a long press on the key lets you set the threshold in %. 0 The key is pressed to switch the backlighting on or off. In continuity measurement, a long press lets you compensate the resistance of the measurement leads. 9

10 3. USE 3.1. CHECKING THE OPERATION OF THE INSTRUMENT Before making any use of the instrument, check that it is operating correctly. Make a voltage measurement on a known voltage. If the measurement is incorrect, do not use the instrument. In continuity measurement, short-circuit the leads. The reading must be close to zero. If not, either the leads are defective or the fuse must be replaced (see 5.3) OLTAGE MEASUREMENT MAKING A MEASUREMENT Set the switch to. The instrument also makes voltage measurements in the M settings. Using the leads, connect the device to be tested to the terminals of the instrument. OFF M AC + DC The instrument displays the AC+DC voltage. If it is >30, the terminals is hazardous. To know the value of the DC component of the voltage, press the symbol is displayed to warn the user that the voltage on the key. AC + DC DC AC+DC MEASUREMENT Why is it important to measure the AC+DC voltage? 100 If the voltage is pure AC, the DC voltage reading is zero dc = 0 ac = 100 ac+dc =

11 10 If the voltage is pure DC, the AC voltage reading is zero. dc = 10 ac = 0 ac+dc = If the voltage is mixed (AC plus DC), as in the example opposite, a DC voltage with a ripple, the AC+DC measurement gives the true value; the AC measurement does not. dc = 100 ac = 40 ac+dc = 140 The AC+DC measurement yields better information as regards energy and electrical safety ERROR INDICATION If the measurement departs from the measurement range, the instrument so reports by displaying OL BATTERY OLTAGE To check the battery voltage, press and hold the TEST key with the switch set to. OFF M DC 11

12 3.3. INSULATION RESISTANCE MEASUREMENT DESCRIPTION OF THE MEASUREMENT PRINCIPLE The device generates a DC test voltage between the + and COM terminals. This voltage depends on the resistance to be measured: it is between U N and 1.25 U N when R R N = U N / 1mA, and is lower otherwise. The device measures the voltage and current present between the two terminals and from them deduces the value of R=/I. The COM terminal is the voltage reference point and the + terminal delivers a positive voltage MAKING A MEASUREMENT OFF M Set the switch to one of the M positions. The test voltage you should choose depends on the voltage of the installation to be tested. For example, for a network installation at 230, insulation measurements will be made at 500. Use the leads to connect the object to be tested to the terminals of the instrument. The object to be tested must not be live. M symbol indicates that the instrument is gen- Press the TEST button and keep it pressed until the measurement is stable. The erating a hazardous voltage. When you release the TEST button, the measurement is frozen and the instrument displays HOLD. You can see the voltage falling, which shows that the object tested is being discharged into the instrument. If the object tested is not capacitive, discharging is very rapid. When the voltage falls below 30, the symbol disappears from the display. Do not disconnect the instrument while the symbol is still displayed. HOLD The measurement remains frozen until you press the HOLD key. The instrument then returns to voltage measurement. You can also start another measurement immediately by a long press on the TEST button TIMER KEY In insulation measurement, the following functions are available: 1 st press This function is used to lock the TEST button so as not to have to keep it pressed during the insulation measurement. 2 nd press 3 rd press Return to the initial screen. This function is used to make a measurement having a programmed duration (see 3.10). 12

13 OPERATION OF THE TEST BUTTON The TEST button is pressed to make an insulation measurement. The test voltage is generated for as long as the press is maintained. When the button is released, the measurement stops. In the mode, simply long-press the TEST button to start the measurement, then long-press again to stop it; there is no need to keep the button pressed. However, if you forget to stop the measurement, it will stop automatically after 40 minutes. In the mode, simply long-press the TEST button to start the measurement; it stops automatically at the end of the programmed duration ALARM Before the insulation measurement, pressing the key activates the alarm. The alarm threshold is displayed, along with the symbols. and Press the TEST key. If the measurement exceeds the threshold, the symbol is displayed. M The alarm thresholds can be programmed (see 3.9). There is one for each test voltage. On the other hand, if the measurement is below the threshold, the instrument emits a continuous beep, the backlighting lights red, and the symbol is displayed. M A second press on the key deactivates the alarm. 13

14 ERROR INDICATION If the measurement departs from the measurement range, the instrument so reports by displaying LO (if the insulation resistance is too low to allow generation of the voltage) or >4200M (for a test voltage of 250 or 500) or >11.00G (for a test voltage of 1000). If the object to be tested is at a hazardous voltage, the symbol is displayed, the instrument emits a pulsed beep, and pressing the TEST button is impossible. If the instrument fails to generate a voltage, check the fuse (see 5.3). 14

15 3.4. CONTINUITY MEASUREMENT DESCRIPTION OF THE MEASUREMENT PRINCIPLE The instrument generates a 200mA direct current between the + and COM terminals. It then measures the voltage present between these two terminals and from it deduces the value of R = /I MAKING A MEASUREMENT To comply with the IEC standard, continuity measurements must be made with a positive current, then with a negative current. The 2 measurements must then be averaged. The reversal of the current serves to compensate for any residual electromotive forces and, more important, to check that the continuity is in fact duplex. OFF Set the switch to M Use the leads to connect the object to be tested to the terminals of the instrument. The object to be tested must not be live. R ma ma To make sure that there is no voltage, make a voltage measurement before the continuity measurement. When the first measurement has been made, note the value and reverse the leads. R ma ma Note the second value and calculate the average. The measurement results can be thrown off by the impedances of circuits connected in parallel or by transient currents. 15

16 COMPENSATION OF THE MEASUREMENT LEADS For best measurement accuracy, compensate the resistance of the measurement leads. To do this, short-circuit the measurement leads. The instrument displays the resistance of the leads. OFF M ma ma 0 Press the key until the instrument beeps and displays the 0 symbol. When the instrument displays 0.00, release the key. ma 0 The leads are also compensated for resistance measurements. The compensation is retained even after the instrument is switched off. If the resistance of the leads is >5, compensation is impossible. If you change the leads without redoing the compensation, the reading can become negative. The backlighting then lights red and the symbol is displayed. Carry out a compensation with the new leads ELIMINATING THE COMPENSATION OF THE MEASUREMENT LEADS To eliminate the compensation of the leads, leave the leads open and press the key until the instrument beeps and the 0 symbol disappears. OFF M 0 ma ma 0 16

17 ALARM The alarm is always active in continuity measurement. The instrument gives you a choice of two alarm thresholds: 1 or 2. See 3.9. If the measurement is below the threshold, the symbol is displayed. If the measurement exceeds the threshold, the backlighting lights red and the symbol is displayed. To activate the audible alarm signal, press the key. The symbol is displayed and the beep is emitted when the measurement is below the threshold. This lets you check that the continuity measurement is OK just by listening, without looking at the display unit ERROR INDICATION If the measurement departs from the measurement range, the instrument so reports by displaying > When the measurement current is <200mA, the measurement made is still correct but is no longer compliant with the standard. If there is a voltage exceeding 0.4 on the object to be tested, the instrument displays NOISE. If the object to be tested is at a hazardous voltage, >30, the symbol is displayed and the instrument emits a pulsed beep. 17

18 3.5. RESISTANCE MEASUREMENT DESCRIPTION OF THE MEASUREMENT PRINCIPLE The device generates a DC voltage between the + and COM terminals. It then measures the voltage present between these two terminals and from it deduces the value of R = /I MAKING A MEASUREMENT OFF 250 Set the switch to the position Use the leads to connect the object to be tested to the terminals of the instrument. M The object to be tested must not be live. R To make sure that there is no voltage, you can make a voltage measurement before the continuity measurement. Otherwise, the instrument will report the presence of a voltage if there is one. If the leads have been compensated for continuity, this compensation will be used in resistance measurements DMR MODE The DMR mode (Differential Mode Resistance), or relative mode, is for installers of in-floor heating. The purpose is to check that all the resistances of a given installation are the same to within a few percent (generally 5%). Start by setting the threshold in % (see 3.9). Make the first measurement and press the TEST button to record it. This will be the reference measurement. REL % 18

19 At each new measurement, the instrument indicates the difference between the new reading and the reference measurement, along with the difference in %. If the difference is below the programmed threshold, the symbol is displayed. If the difference exceeds the programmed threshold, the backlighting lights red and the symbol is displayed. REL % REL % Pressing the key activates the beep. When the difference exceeds the threshold, the instrument emits a continuous beep. This lets you check all of the resistances without looking at the display unit. To exit from the DMR function, press the TEST button ERROR INDICATION If the measurement departs from the measurement range, the instrument so reports by displaying > If there is a voltage of more than 0.4 on the object to be tested, the instrument displays NOISE. If the object to be tested is at a hazardous voltage, >30, the symbol is displayed and the instrument emits a pulsed beep HOLD FUNCTION HOLD Pressing the HOLD key freezes the display of the measurement. This can be done in all functions. To unfreeze the display, press the HOLD key again BACKLIGHTING Pressing the key switches on the backlighting of the display unit. To switch it off, press the key again. Otherwise, it switches itself off after 2 minutes, unless you have deactivated auto-off (see 3.8). 0 19

20 3.8. SET-UP To go to the set-up of the instrument, press the TIMER key while turning the switch from OFF to any other setting. When you hear the beep, release the TIMER key. + OFF M SET-UP Then use the and keys to scroll and modify the parameters. The beep is active. To deactivate it, press ; the On changes to OFF. The next time the instrument is switched on, the alarm beep will be deactivated. Permanent mode is deactivated (or auto-off is activated). 1 st press on P This means that after 10 minutes with no sign of the user's presence, the instrument switches to standby. Press the TEST button to wake the instrument. To deactivate auto-off, press the key; the OFF changes to On. The next time the instrument is switched on, auto-off will be deactivated and the P symbol will be displayed. 2 nd press on Automatic switching off of the backlighting is activated. This means that, when you light the backlighting, it is switched off after 2 minutes. If you want it to stay on at all times, press the key; the OFF changes to On. The next time the instrument is switched on, automatic switching off of the backlighting will be deactivated. 3 rd press on Display of the version of the instrument's embedded software. 4 th press on Return to the first screen. Switch your instrument off by turning the switch to OFF. All of the changes will be applied the next time the instrument is switched on. 20

21 3.9. ALARM FUNCTION The instrument has 5 alarm thresholds: Function Default threshold Programmable threshold Insulation from 50 to 3.999G Insulation from 100 to 3.999G Insulation 1,000 1,000M from 200 to 9.99G Continuity 2 1 or 2 Resistance DMR 5% from 0.1 to 399.9% key and release it when the beep sounds. The instru- To program a threshold, set the switch to the desired function, press the ment displays the current threshold with the first digit blinking. OFF M > 2 s HOLD SET-UP Use the key to set the digit and the key to go to the next digit. When all 4 digits have been set, choose the unit. Confirm by pressing the TEST button PROGRAMMED DURATION To program the duration of insulation measurements in the programmed duration mode : Set the switch to any insulation setting. Press the key twice. The instrument switches to the programmed duration mode. OFF M SET-UP SET-UP Long-press the key; release it when the beep sounds. The instrument displays the active alarm threshold. Press the key again. The instrument displays the programmed duration with the first digit blinking. > 2 s SET-UP SET-UP 21

22 Use the key to set the digit and the key to go to the next digit. Confirm by pressing the TEST button. HOLD The duration can be programmed from 00:10 to 39:59 (from 10 seconds to 40 minutes) AUTOMATIC STOP After 10 minutes of operation with no sign of the user's presence (key press or rotation of the switch), the instrument switches to standby. To exit from standby, press the TEST button. Auto-off is disabled during insulation measurements in mode. This auto-off can be deactivated (see 3.8). 22

23 4. TECHNICAL CHARACTERISTICS 4.1. GENERAL REFERENCE CONDITIONS Quantity of influence Temperature Relative humidity Reference values 23 ±3 C 45 to 75%RH Supply voltage 8 to 9 Warm-up time Electric field Magnetic field 5 minutes <0.1/m <40A/m The intrinsic uncertainty is the error specified for the reference conditions. The operating uncertainty includes the intrinsic uncertainty plus the effects of variation of the quantities of influence (supply voltage, temperature, interference, etc.) as defined in standard IEC The uncertainties are expressed in % of the reading (R) and in number of display points (pt): ±(a% R +bpt) 4.2. ELECTRICAL CHARACTERISTICS OLTAGE MEASUREMENTS Particular reference conditions: Peak factor = 2=1,414 in AC (sinusoidal signal) AC component <0.1% in DC measurement DC component <0.1% in AC measurement oltage measurements Specified measurement range ac+dc dc Resolution 1 1 Intrinsic uncertainty ±(1,2% L +1pt) ±(1% L +1pt) Input impedance 25M CONTINUITY MEASUREMENTS Particular reference conditions: Resistance of the leads: 0.01 (compensated). External voltage in series: zero. Common mode voltage: zero. Inductance in series with the resistance: 1nH. The compensation of the leads is effective up to 5. The response time for threshold detection <300ms. Specified measurement range Resolution Measurement current 200mA between 100 and 200mA Intrinsic uncertainty ±(1.2% R +3pt) No-load voltage 6 dc <U <9 dc The instrument is protected between the terminals by a fuse. 23

24 RESISTANCE MEASUREMENTS Particular reference conditions: Resistance of the leads: 0.1 (compensated). External voltage in series: zero. Common mode voltage: zero. Specified measurement range Resolution Intrinsic uncertainty ±(1.2% L +3pt) No-load voltage INSULATION RESISTANCE MEASUREMENTS Particular reference conditions: Capacitance in parallel: <1nF. External voltage in series: zero. Common mode voltage: zero. Insulation resistance Specified measurement range at 250 Specified measurement range at 500 Specified measurement range at M M M M M M M M M M M G Resolution 0.001M 0.01M 0.1M 1M 0.01G Intrinsic uncertainty ±(1.5% R +10pt) ±(1.5% R +10pt) ±(1.5% R +10pt) ±(4% L +10pt) and ±(4% L +5pt) at 1000 ±(10% R +10pt) No-load voltage Nominal current Short-circuit current 1.25 x U N > 1mA <15mA peak-to-peak Typical test voltage vs load curve The voltage developed as a function of the resistance measured has the following form: I = 1 ma UN RN = UN / 1 ma The maximum load capacitance is 300nF, but the instrument operates correctly up to 2µF. The response time is <2s TIMER Specified range 0:10-39:59 Resolution 1s Intrinsic uncertainty ±1s 24

25 4.3. ARIATIONS IN THE RANGE OF USE OLTAGE MEASUREMENT Quantities of influence Limits of the range of use ariation of the measurement Typical Maximum Temperature -10 to +50 C 1pt ±(0.3%L/10 C +1pt) Relative humidity 20 to 80%HR 1pt ±(1%L +2pt) Supply voltage 6.6 to 9.6 ±(0.1%L +2pt) Frequency 30 to 440Hz 0.5dB 1dB Peak factor Series mode rejection at 50/60Hz AC and DC Common mode rejection in AC Hz 1 to 3 (up to 200) 0 to dB 0 to ac 40dB 0% 1% INSULATION MEASUREMENT Quantities of influence Temperature Relative humidity R 400M R <10G Limits of the range of use ariation of the measurement Typical -10 to +50 C ±1000 ppm L/ C Maximum ±2000 ppm L/ C ±4000 ppm L/ C 75 to 90%HR ±2%L ±5%L 10 to 45%HR ±0.5%L ±3%L Supply voltage 6.6 to 9.6 ±0.1%L ±1%L 50/60Hz AC voltage superposed on the test voltage (U N ) Capacitance in parallel on resistance to be measured Common mode rejection in AC 50/60 Hz Rejection of the electric field in 50/60Hz AC 0-10 ±(2%L +2pt) ±(5%L +2pt) 1 to I <1mA 400nF to I <1mA ±6%L ±10%L ppm L/ 15 ppm L/ /m 5 ppm L//m 15 ppm L//m CONTINUITY MEASUREMENT Quantities of influence Limits of the range of use Typical ariation of the measurement Maximum Temperature -10 to +50 C ±(0.5%L/10 C +2pt) ±(2%L/10 C +2pt) Relative humidity 20 to 80%HR 1pt ±(2%L +2pt) Supply voltage 6.6 to 9.6 ±(0.1%L +2pt) 50/60Hz AC voltage superposed on the test voltage Common mode rejection in AC 50/60 Hz R <2: 0.5 ac R 2: 0.4 ac ±(5%L +10pt) 0 to ac 50dB 40dB 25

26 RESISTANCE MEASUREMENT Quantities of influence Limits of the range of use Typical ariation of the measurement Maximum Temperature -10 to +50 C ±(1%L/10 C +2pt) Relative humidity 20 to 80%HR ±(3%L +2pt) Supply voltage 6.6 to 9.6 ±(1%L +2pt) 50/60Hz AC voltage superposed on the test voltage Common mode rejection in AC 50/60 Hz ac ±(5%L +10pt) 0 to ac 50dB 40dB 4.4. INTRINSIC UNCERTAINTY AND OPERATING UNCERTAINTY The megohmmeters comply with standard IEC 61557, which requires that the operating uncertainty, called B, be less than 30%. In insulation, B=±( A +1,15 E 1 ² +E 2 ² +E 3 ² ) with A=intrinsic uncertainty E 1 = influence of the reference position ±90. E 2 = influence of the supply voltage within the limits indicated by the manufacturer. E 3 = influence of the temperature between 0 and 35 C. In continuity measurement, B=±( A +1,15 E 1 ² +E 2 ² +E 3 ² ) 4.5. POWER SUPPLY The instrument is powered by 6 LR6 or AA batteries. The range of operation is from 6.6 to 9.6. The symbol is displayed below LIFE BETWEEN CHARGES Typical life between charges of the device: Function Life between charges oltage >200h Continuity >3,000 5-second measurements, with a 25s interval, at 1 20,000 8-second measurements, with a 10s interval, at 1 Insulation 1,000 5-second tests, with a 25s interval, at 1M for U N =1000 Instrument on standby Instrument off >2 months >1 year 26

27 4.6. ENIRONMENTAL CONDITIONS %RH C 1 = Reference range, 20 to 26 C. 2 = Specified operating range, 0 to 40 C. 3 = Operating range, -10 to 50 C. 4 = Storage range (without batteries), -40 to +70 C. Indoor use. Altitude <2.000m Pollution degree 2 The specified operating range corresponds to that of the operating uncertainty defined by the IEC standard MECHANICAL CHARACTERISTICS Dimensions (L x W x H) 218x95x63mm Weight approximately 760g Inrush protection IP40 per IEC Drop test 2 meters per IEC COMPLIANCE WITH INTERNATIONAL STANDARDS The device is compliant per IEC , IEC and IEC , 600 CAT I. Assigned characteristics: measurement category I, 600 with respect to earth. The device is protected by double or reinforced insulation. The device is compliant per IEC 61557, parts 1, 2, 4 and ELECTROMAGNETIC COMPATIBILITY (CEM) The instrument is compliant with standard IEC

28 5. MAINTENANCE Except for the batteries and the fuse, 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 Disconnect the unit completely and turn the rotary switch to OFF. 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 REPLACING THE BATTERIES When the symbol starts blinking on the display unit, the batteries must all be replaced. Disconnect everything connected to the instrument and switch it off. Follow the instructions of 1.3. Spent primary and storage batteries must not be treated as ordinary household waste. Take them to the appropriate collection point for recycling REPLACING THE FUSE To check the fuse, short-circuit the continuity measurement terminals. OFF ma 0 ma 1000 M If the display unit indicates >42.00, the fuse has blown and must be replaced. Disconnect everything connected to the instrument and switch it off. Remove the protective sheath as explained in 1.3. Then withdraw the case from the sheath. Turn the instrument over. Use a screwdriver to unscrew the captive screw of the battery compartment cover, then remove the cover. Remove the fuse and replace it with the exact type of fuse indicated on the label of the instrument. : F 200mA kA To keep the instrument safe, replace the blown fuse only with a fuse having exactly the same characteristics. Put the battery compartment cover back in place; make sure that it is completely and correctly closed. Screw the captive screw back in. Put the sheath back on the instrument, from the bottom 28

29 5.4. CALIBRATING THE INSTRUMENT This must be done by qualified personnel. We recommend doing it once a year EQUIPMENT NECESSARY An ammeter (ma and µa) accurate to 0.5% or better An 0.1 to 1000 voltage calibrator accurate to 0.1% or better One or more resistance boxes with the values: 40, 4, 40, 180, 300, 400, 1.5M with an accuracy of 0.2%, 7M, 40M, 300M, 1G, 1,5G, 3G with an accuracy of 1% CALIBRATION PROCEDURE To enter the adjustment mode, set the switch to and press the 4 function keys simultaneously until the instrument beeps. Release the keys. The instrument displays CA.1, the first of the eight steps of the adjustment. OFF M HOLD SET-UP 0 At each step, press the TEST key. The instrument performs the adjustment and displays the result (PASS or FAIL) Press the key to go to the next step or to return to the previous step. CA.1-Adjustment of the voltage offset Switch set to Short-circuit the terminals Disconnect the terminals 29

30 CA.2-Adjustment of the voltage gain Switch set to Use the calibrator to generate the following DC voltages: 6 Calibrator set to 6.00 dc 100 Calibrator set to dc 500 Calibrator set to dc 1000 Calibrator set to dc Disconnect the calibrator CA.3-Adjustment of the offset for continuity and resistance Switch set to Terminals not connected OHM1 OHM2 OHM3 OHM4 CA.4-Adjustment of the current generated for continuity and resistance Switch set to Connect the ammeter to the terminals Use the and keys to set the current to the value indicated by the ammeter. OHM1 ammeter set to the ma range OHM2 ammeter set to the ma range OHM3 ammeter set to the µa range OHM4 ammeter set to the µa range Disconnect the ammeter CA.5-Adjustment of the ground resistor for continuity and resistance measurements Switch set to Short-circuit the terminals OHM1 OHM2 OHM3 OHM4 Disconnect the terminals CA.6-Adjustment of the gain for continuity and resistance measurements Switch set to Connect the resistance box to the terminals OHM1 40 OHM2 4 OHM3 40 OHM4 400 Disconnect the terminals CA.7-Adjustment of the offset for insulation measurements Switch set to M-250 A0 Terminals not connected A1 Terminals not connected A2 Terminals not connected A3 Terminals not connected A4 Terminals not connected A5 Connect the resistance box to the terminals, value 1G A6 Connect the resistance box to the terminals, value 3G 30

31 CA.8-Adjustment of the gain for insulation measurements Switch set to M-250 Connect the resistance box to the terminals A0 80 A1 300 A2 1,5M A3 7M A4 40M A5 300M A6 1,5G Disconnect the resistance box. Switch the instrument off by setting the switch to OFF. Your instrument is now adjusted CHECKING THE INSTRUMENT To check that the adjustment is correct, check the following measurement points: oltage 230dc oltage 230ac Resistance 10 Resistance 100 Resistance 1 Resistance 10 Resistance 100 Insulation 10M at 1000 Insulation 100M at 1000 Insulation 1G at 1000 Insulation 10G at 1000 Your instrument is now ready to be used. 31

32 6. WARRANTY Except as otherwise stated, our warranty is valid for 24 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 incompatible 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. 32

33 33

34 C00568A02 - Ed. 1-09/2019 Chauvin Arnoux - All rights reserved and reproduction prohibited FRANCE Chauvin Arnoux Group 190, rue Championnet PARIS Cedex 18 Tél : Fax : INTERNATIONAL Chauvin Arnoux Group Tél : Fax : Our international contacts

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