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Chauvin Arnoux C.A 6549 User Manual

Other manuals for C.A 6549: User manual
Manual is about: A top-of-line measuring instrument, portable, in a rugged constructionsite housing with cover, with a graphic screen, operating from battery or line power

Summary of C.A 6549

  • Page 1

    E n g l i s h user’s manual megohmmeter c . A 6 5 4 9.

  • Page 2: Precautions For Use

    2 warning, risk of danger! The operator must refer to this user’s manual whenever this danger symbol appears. Equipment protected by double insulation. Warning! Risk of electric shock. The voltage of the parts identified by this symbol may be ≥ 120 v dc . For safety reasons, this symbol is displayed...

  • Page 3: Contents

    3 contents 1. Presentation ....................................................................................................................................................................... 4 1.1. The megohmmeter .....................................................................................

  • Page 4: 1. Presentation

    4 1. Presentation 1.1. The megohmmeter the c.A 6549 megohmmeter is a portable unit, fitted into a rugged construction site casing with cover, operating on battery or line power. Its main functions are: „ automatic detection and measurement of voltage, frequency, input current, „ quantitative and qua...

  • Page 5: 2. Description

    5 2. Description 2.1. Housing ➂ ➆ ➅ ➄ ➃ ➇ ➁ ➀ ➀ 3 4mm-dia. Safety terminals identified as “+”, “g”, and “-”. ➁ access to the fuse that protects terminal “g”. ➂ 8-way rotary switch: „ off switches instrument power off. „ 500v - 2t Ω insulation measurement at 500 v up to 2 t Ω. „ 1000v - 4t Ω insulati...

  • Page 6

    6 2.2. Keys 8 keys each having a main function and a secondary function: 2nd select the secondary function (indicated in yellow italics below each key). Mode print primary function: select the desired type of measurement, before an insulation measurement, or select the current range, during a measur...

  • Page 7

    7 voltage generated dangerous, u > 120v dc . External voltage present, u > 25 vrms.

  • Page 8: 3. Measurement Functions

    8 3. Measurement functions 3.1. Ac / dc voltage turning the switch to an insulation position (position other than off or set-up) sets the instrument to automatic ac / dc voltage measurement. The voltage between the input terminals is measured at all times and indicated as rms value on the display un...

  • Page 9

    9 case 3 you select an insulation measurement with a test voltage that varies in steps: this is the “step function” mode. Position: adjust. Step you can choose among the three step functions (p and  keys) you defined earlier in set-up. Pressing the start/stop key immediately triggers the measuremen...

  • Page 10: 4. Special Functions

    10 4. Special functions 4.1. Mode / print key 4.1.1. Primary function before the measurement the primary function of the mode key is very important: it is used before the measurement to define the course of the measurement. This key is inactive in the “adjust. Step” and set-up positions. Pressing th...

  • Page 11

    11 timed run + dd: this mode is identical to the previous one except that 1 minute after the end of the measurement the instrument calculates and displays the dd term. The measurement duration is therefore: duration of timed run + 1 minute. The insulation resistance vs. Time curve can be displayed a...

  • Page 12

    12 what are the dar (dielectric absorption ratio) and the pi (polarization index)? It is useful to calculate insulation quality ratios in addition to the quantitative insulation resistance value, because they can be used to eliminate the influence of certain parameters likely to invalidate the “abso...

  • Page 13

    13 4.1.3. Secondary function the print secondary function is described in § 6.3 (printing of measured values). 4.2. Display / graph key 4.2.1. Primary function display this key is used to browse through the various accessible screens containing all information available before, during or after the m...

  • Page 14

    14 after the measurement available information: first screen press on display 2 nd press on display insulation resistance measured voltage measured current elapsed test duration dar, pi, capacitance selected test voltage input voltage frequency input current (dc only) date, time input voltage freque...

  • Page 15

    15 after the measurement available information: first screen press on display 2 nd press on display insulation resistance measured voltage measured current elapsed test duration dar, pi, capacitance current (for the calculation of dd) dd selected test voltage input voltage frequency input current (d...

  • Page 16

    16 available information: first screen press on display insulation resistance measured voltage measured current remaining test duration resistance bargraph insulation resistance measured voltage measured current remaining test duration dar, pi, capacitance after the measurement available information...

  • Page 17

    17 during the measurement available information: first screen press on display insulation resistance measured voltage measured current remaining test duration resistance bargraph insulation resistance measured voltage measured current remaining test duration dar, pi, capacitance current (for the cal...

  • Page 18

    18 available information: first screen press on display selected test voltage programmed test duration input voltage frequency input current (dc only) date, time input voltage frequency input current (dc only) voltage bargraph during the measurement available information: first screen press on displ...

  • Page 19

    19 4.2.2. Graph secondary function this function is used to display the insulation resistance versus measurement time curve after a time-limited measurement (timed run or timed run + dd). This curve is plotted from the samples recorded during the measurement. The p, , u and  keys can be used to mo...

  • Page 20

    20 4.4.  / smooth key the smooth secondary function activates / deactivates an insulation measurement digital filter. It affects only the display (which is smoothed), not the measurements. This function is useful if the insulation values displayed are very unstable. The filter is calculated as foll...

  • Page 21

    21 timed run (h:m): duration of test in "timed run" mode. Default value range 00: 10 (h:m) 00: 01 … 49: 59 (h:m) sample time (m:s): time interval between samples recorded in timed run mode for plotting r(t). Default value range 00: 10 (m:s) 00: 05 … 59: 59 (m:s) the limit depends on the duration set...

  • Page 22

    22 temperature unit: selection of temperature unit. Default value range °c °c or °f default probe temperature: measurement temperature. Default value range 23 °c -15°c … +75°c rc reference temperature: reference temperature to which the measurement result must be referred. Default value range 40 °c ...

  • Page 23

    23 date (d.M.Y): current date or setting of date. Europe dd.Mm.Yyyy usa mm.Dd.Yyyy time (h:m): current time or setting of time. 4.5.2. Memory erasure in set-up, select clear memory. „ to erase the content of one or more specific obj: test numbers select select data sets to clear by pressing u. Then ...

  • Page 24

    24 set-up obj. Test 47 99 13 59 13 58 02 03 02 02 02 01 01 02 res. Volt. Temp. ∆t calculation fot r/2 228.5 m Ω 208.5 m Ω 178.5 m Ω 328.5 m Ω 328.5 m Ω 328.5 m Ω 328.5 m Ω 5078v 5078v 5078v 5078v 5078v 5078v 5078v 23°c 30°c 37°c 23°c 23°c 23°c 23°c 23.7°c „ select at least 3 measurements using the p...

  • Page 25: 5. Procedure

    25 5. Procedure 5.1. Course of measurements „ start up the instrument by setting the switch to the position corresponding to the measurement to be made. The instrument can measure insulation values from 10 kΩ to 10 tΩ, depending on the test voltage selected-from 40 to 5100 v dc . The screen displays...

  • Page 26

    26 b) example of a cable (reduction of surface leakage effects) g - + unless the step function mode is selected ( adj. Step), select the measurement mode to be used (manual stop, manual stop + dd, timed run, timed run + dd, dar or pi) by pressing the mode key (see § 4.1) a press on start/stop trigge...

  • Page 27

    27 procedure: „ in the set-up menu, select set step function 1, 2 or 3. Example: here, step function n°3. „ define the step function and the sample interval is automatically adjusted.. „ once the step function is defined, set the switch to adj. Step and select step function n°3 using the p or  key....

  • Page 28: 6. Memory / Rs 232

    28 6. Memory / rs 232 6.1. Rs 232 characteristics „ the baud rate can be set to 300, 600, 1200, 2400, 4800, 9600, or parallel for printing on parallel printers via the optional serial / parallel adapter. This adjustment is performed in the set-up menu (see § 4.5) „ data format: 8 data bits, 1 stop b...

  • Page 29

    29 the number of measurements that can be stored depends on the kind of measurements: “programmed-time tests” need a different amount of memory space depending on test duration and sample interval for recording intermediate results. A test duration of one hour and a sampling interval of 5 seconds ta...

  • Page 30

    30 object: 01 test: 01 (printed only in mr mode) insulation resistance test date: 30.04.2009 starting time: 14h55 duration: 00:15:30 temperature: 23°c relative humidity: . . . . % test voltage: 1000 v insulation resistance: 385 gohm - - - - - - - - - - - - - - - - - - - - - - - - - - rc - calculated...

  • Page 31

    31 ∆r / (r*∆v) (ppm/v) -57 ppm capacitance 100 nf - - - - - - - - - - - - - - - - - - - - - - - - - - elapsed time utest resistance - - - - - - - - - - - - - - - - - - - - - - - - - - 00:00:10 1020 v 2.627 gohm 00:00:30 1020 v 2.627 gohm 00:00:50 1020 v 2.627 gohm …etc date of next test: ../../........

  • Page 32

    32 at reference temperature 40°c with ∆t for r/2 10°c - - - - - - - - - - - - - - - - - - - - - - - - - - dar (1’/30”) 1.234 pi (10’/1’) 2.345 dd - . - - capacitance 110 nf object: 01 test: 02 insulation resistance test date: 28.04.2009 starting time: 17h55 duration: 00:17:30 temperature: 23°c relat...

  • Page 33

    33 ∆r 604 gohm ∆v 4000 v ∆r / (r*∆v) (ppm/v) -57 ppm capacitance 100 nf object: 01 test: 02 .... Etc date of next test: ../../..... Remarks: .............................................. .............................................................. Operator: ..........................................

  • Page 34: 7. Specifications

    34 7. Specifications 7.1. Reference conditions influence quantities reference values temperature 23 ± 3 °c relative humidity 45 to 55 % rh supply voltage 9 to 12 v frequency range dc and 15.3 to 65 hz capacitance in parallel on resistance 0 µf electric field nil magnetic field 7.2. Characteristics p...

  • Page 35

    35 maximum acceptable ac voltage: (1.1 + dist) x un + 60 v measurement ranges: 500 v : 10 k Ω ... 1.999 tΩ 1000 v : 10 k Ω ... 3.999 tΩ 2500 v : 10 k Ω ... 9.99 tΩ 5000 v : 10 k Ω ... 9.99 tΩ var 40 v ... 5100 v: to be interpolate between the fixed values above. Accuracy and resistance range in fixe...

  • Page 36

    36 range 1000 v 0 200 400 600 800 1000 1200 0,01 0,1 1 10 m Ω v range 2500 v 0 500 1000 1500 2000 2500 3000 0,01 0,1 1 10 m Ω v range 5000 v 0 1000 2000 3000 4000 5000 6000 0,01 0,1 1 10 m Ω v typical curves, test voltage versus load range 500 v 0 100 200 300 400 500 600 0,01 0,1 1 m Ω v calculation...

  • Page 37

    37 calculation of the dd term specified range 0.02 … 50.00 resolution 0.01 accuracy ± 10% + 1 ct capacitance measurement (after discharge of tested element) specified measurement range 0.005 … 9.999 µf 10.00 … 49.99 µf resolution 1 nf 10 nf accuracy ± 10% + 1 ct ± 10% 7.3. Power supply the instrumen...

  • Page 38

    38 7.6. Compliance with international standards „ electrical safety as per: iec 61010-1, iec 61557 „ double insulation „ pollution level: 2 „ measurement category: iii „ maximum voltage relative to earth: 1000 v 7.6.1. Electromagnetic compatibility emissions and immunity in an industrial setting com...

  • Page 39: 8. Maintenance

    39 8. Maintenance except for 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. 8.1. Servicing 8.1.1. Battery charging if the i...

  • Page 40: 9. Warranty

    40 9. Warranty except as otherwise stated, our warranty is valid for twelve 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 ...

  • Page 41: 10. to Order

    41 10. To order c.A 6549 megohmmeter .......................................................................................................................................... P01139703 delivered with bag containing: „ 2 x 3-m safety leads, fitted with a hv plug and a hv alligator clip (red and blue...

  • Page 42

    Http://www.Chauvin-arnoux.Com 190, rue championnet - 75876 paris cedex 18 - france tél. : +33 1 44 85 44 85 - fax : +33 1 46 27 73 89 - info@chauvin-arnoux.Fr export : tél. : +33 1 44 85 44 38 - fax : +33 1 46 27 95 59 - export@chauvin-arnoux.Fr 02 - 2015 code 689646c02 - ed. 2 deutschland - chauvin...