Chauvin Arnoux C.A 6549 User manual

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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

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MÉGOHMMÈTRES

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MEGOHMMETERS

C.A 6549

FRANCAIS

E N G L I S H

Mode d'Emploi

User's manual

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Summary of C.A 6549

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1 ■ ■ ■ ■ ■ mÉgohmmÈtres ■ ■ ■ ■ ■ megohmmeters c.A 6549 francais e n g l i s h mode d'emploi user's manual.
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48 meaning of symbol ! Caution ! Refer to the user manual before using the instrument. Failure to follow or carry out the instructions in this user manual preceded by this symbol may result in personal injury or damage to the instrument and the installations. Meaning of symbol this instrument is pro...
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49 contents 1. Presentation ............................................................................................................................ 50 1.1. The megohmmeter ............................................................................................................... 50 1.2. Acc...
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50 1. Presentation 1.1. C.A 6549 megohmmeter the c.A 6549 megohmmeter is a top-of-line measuring instrument, portable, in a rugged construction- site housing with cover, with a graphic screen, operating from battery or line power. Its main functions are: § automatic detection and measurement of volt...
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51 § dataviewer pro pc software this is used to: - recover stored data (results, graphs, etc.) - print personalized test protocols in accordance with user needs, - create text files to be able to use spreadsheets (excel tm , etc.), - configure and completely control the instrument via the rs 232 por...
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52 - 3 4mm-dia. Safety terminals identified as «+», «g», and «-» - access to the fuse that protects terminal “g” - 8-way rotary switch: § off: switches instrument power off § 500 v-2 tΩ: insulation measurement at 500v up to 2 tΩ § 1000 v-4 tΩ: insulation measurement at 1000v up to 4 tΩ § 2500 v-10 t...
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53 mem fonction première : store measured values. Mr fonction seconde : retrieve stored data (this function is dependent of the switch position), except in the off and set-up positions. 2.2. Display 2.2.1 graphic display unit the display unit is a graphic display unit with a resolution of 320 x 240 ...
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54 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 on the display unit: input vo...
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55 case 1 you select an insulation measurement with a fixed / standard test voltage, in manual mode. Positions : 500v - 2tΩ Ω Ω Ω Ω 1000v - 4tΩ Ω Ω Ω Ω 2500v - 10tΩ Ω Ω Ω Ω 5000v - 10tΩ Ω Ω Ω Ω case 2 you select an insulation measurement with a test voltage other than those proposed as standard. Pos...
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56 u peak ≥ dlst x un where - upeak : external voltage, peak or dc, on the terminals of the instrument. - dlst : coefficient that can be adjusted in set-up - 3% (defaut value), 10% or 20%. - un : test voltage selected for the insulation measurement. § similarly, if during the insulation measurements...
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57 to validate the mode selected, press the mode key again. The various measurement modes are as follows : § manual stop : this is the conventional quantitative insulation measurement mode : the measurement is started by pressing start / stop and stopped by pressing start / stop again. The user dete...
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58 § timed run +dd : this mode is identical to the foregoing except that 1 minute after the end of the measurement the instru- ment 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...
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59 this makes it judicious to perform a dielectric discharge test, from which the dd term can be calculated. This test measures the dielectric absorption of heterogeneous or multilayer insulation and disregards parallel-surface leakage currents. It involves applying a test voltage for long enough to...
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60 interpretation of the results: n the print secondary function is described in § 6.3 (printing of measured values). 4.2 display / graph key n fonction première display this key is used to browse through the various accessible screens containing all information available before, during or after the...
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61 information accessible : after the measurement information accessible : § manual stop + dd mode before the measurement information accessible : f irst sc re e n p re ss o n d is p l a y m e a su re d re sista n c e d c te st v o lta g e r e sid u a l c u rre n t m e a su re m e n t d u ra tio n i...
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62 during the measurement information accessible : after the measurement information accessible : f irst screen p ress on d isplay m easured re sistance d c test v oltage s purious input current m easurem ent duration insulation bargraph m easured re sistance d c test v oltage s purious input curren...
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63 1mn after the measurement the first screen displays the value of dd and the current used to calculate it (dd current) § timed run mode before the measurement information accessible : during the measurement first screen press on display dc test voltage programmed duration of test ac / dc input vol...
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64 information accessible : after the measurement information accessible : § timed run + dd mode before the measurement first screen press on display measured resistance dc test voltage residual current remaining measurement time insulation bargraph measured resistance dc test voltage residual curre...
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65 information accessible : during the measurement information accessible : after the measurement first screen press on display dc test voltage programmed duration of test ac / dc input voltage frequency residual current date, time ac / dc input voltage frequency residual current voltage bargraph fi...
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66 information accessible : 1 mn after the measurement the first screen displays the value of dd and the current used to calculate it (dd current) § dar mode before the measurement information accessible : first screen press on display 2 nd press on display measured resistance dc test voltage spurio...
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67 during the measurement information accessible : after the measurement information accessible : § pi mode same as dar mode except: - pi instead of dar at the top left of the display unit - remaining time = 10 mn - after the measurement : display of dar and pi . First screen press on display measur...
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68 § graph secondary function after a "programmed time test" measurement (timed run or timed run + dd), pressing this key displays the insulation resistance versus measurement time curve. This curve is plotted from the samples noted during the measurement. The 4,3,5 and 6keys can be used to move alo...
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69 remarks : § during the procedure, pressing display or turning the switch cancels the calculation in progress. § if the coefficient ∆t used for the calculation is not known, the instrument can calculate it in advance, using at least 3 stored measurements made at different temeperatures (cf. § 4.5....
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70 description of each instrument configuration parameter : § display contrast : modification of display unit contrast § alarm settings : programming of measurement threshold values below which an audible alarm is triggered. Note : to return to the set-up menu, press the display key § adjustable vol...
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71 § dar (s : s) 1 st and 2 nd times for the dar calculation § pi (m : m) 1 st and 2 nd times for the pi calculation § set step function 1, 2, 3 for each predefined step function mode, definition of the various voltages, of the duration of each step, and of the duration for the recableing of samples...
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72 § default probe temperature estimated measurement temperature unit § rc reference temperature reference temperature to which the measurement result must be referred § ∆ t for r/2 estimated ∆t to obtain an insulation resistance / 2 § calculate ∆t fr t fr t fr t fr t from memor om memor om memor om...
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73 § baud rate rs 232 communication format and rate (cf. § 6.1) § units display version § date current date or set date § time h:m - current time or set time 4.5.2 memory erasure in set-up, select clear memory Ø to erase the content of one or more specific obj : test numbers - select select data set...
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74 4.5.3 calculation of ∆ ∆ ∆ ∆ ∆ t from stored data the coefficient ∆t is used to calculate the insulation resistance at a temperature other than the measurement temperature (cf. § 4.3). It is the temperature difference at which the insulation concerned is divided by 2. This coefficient is variable...
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75 4.6 list of coded errors if an anomaly is detected when the instrument is started up or in operation, the display unit indicates an error code. The format of this error code is a 1- or 2-digit number. This number identifies the anomaly and the action to be taken. Possible errors : q the codes fro...
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76 q connection diagram for measurement of low insulation values (example of a motor) to measure high insulation values (> 1 gΩ Ω Ω Ω Ω ), we recommend using guard terminal «g» to avoid leakage and capacitive effects or eliminate the influence of superficial leakage currents. The guard terminal is c...
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77 § pressing start/stop again stops the measurement. The last result remains displayed until the next measurement is made or the switch is turned. When the insulation measurements stop, the circuit tested is automatically discharged via a resistor in the instrument. The display key can be used to c...
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78 § once the step function is defined, set the switch to adl. Step and select step function n°3 using the 4 key. § start the measurement by pressing start/ stop § during the measurement, the following screens can be accessed by pressing the display key. § at the end of the measurement, the followin...
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79 q connexion to the serial printer : db9f ➔ db9m 2 → 2 5 → 5 3 → 3 6 → 6 4 → 4 8 → 8 q connexion to a pc or to a parallel printer : db9f Ô db9f 2 → 3 5 → 5 3 → 2 6 → 4 4 → 6 8 → 7 note : check that there is no connection between pins 6 and 8 of the rs232 port of the instrument. 6.2 recableing / pl...
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80 q estimate of result recableing capacity total memory space: 128 kbytes internal management: 8 kbytes memory space available: 120 kbytes an insulation measurement result requires approximately 80 bytes. It is therefore possible to recable approximately 1500 insulation measurements. Q memory space...
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81 after selection of the printing mode : - if the transmission of data to the printer goes well, the com symbol flashes at the top left of the display unit. - if a problem occurs, the com symbol remains lit steadily at the top left of the display unit. 6.3.1 immediate printing of the measurement : ...
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82 date of next test: ../../..... Remarks:........................... ................................... Operator: ... ..................... Signature: ........................ Q step function measurement: chauvin arnoux c.A 6549 instrument number: 000 001 company:........................... Addres...
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83 6.3.2 printing of stored data : print memory when this printing mode is selected, the content of the memory is displayed. Stored measurements to be printed are selected using the 4,3,5 and 6keys. Here, the measurements to be printed are : 13 : 59 13 : 58 02 : 03 02 : 02 once they have been select...
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84 insulation resistance test date 31.01.2003 starting time: 17h55 running time: 00:17:30 temperature: 23°c relative humidity: .... % test voltage: 1000 v insulation resistance: 385 gohm —————————————————- rc - calculated resist. 118,5 gohm at reference temperature 40°c with ∆t for r/2 10°c ————————...
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85 1 0:10 1000 v 1020 v 2,627 gohm 2 0:10 2000 v 2043 v 2,411 gohm 3 0:10 3000 v 3060 v 2,347 gohm 4 0:10 4000 v 3755 v 2,182 gohm 5 0:10 5000 v 3237 v 2,023 gohm ∆ r 604 gohm ∆ v 4000 v ∆ r/(r*∆v) (ppm/v) -57 ppm capacitance 110 nf object: 01 test: 03 …etc.…………………………………… date of next test: ../../.....
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86 7.2 characteristics per function 7.2.1 voltage q characteristics q input impedance : 750 kΩ to 3 mΩ depending on voltage measured q measurement category : 1000v cat iii or 2500v cat i (transients ≤ 2,5kv) 7.2.2 leakage current measurement q before an insulation measurement : q during an insulatio...
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87 q nominal output voltage: 500, 1000, 2500, 5000 v dc precision ± 2% adjustable from 40 v to 1000 v dc in 10v steps adjustable from 1000 v to 5100 v dc in 100v steps q nominal current: ≥ 1 ma dc q short-circuit current: dc ( 3,1ma maximum starting) q maximum acceptable ac voltage: = (1,05 + dist) ...
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88 q precision and resistance range in variable / adjustable voltage mode max. Resistance measured = test voltage / 250pa note : the precision in variable mode must be interpolated from the precision tables provided for fixed test voltages. Q measurement of dc voltage during insulation test during t...
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89 range 2500 v range 5000 v q calculation of the dar and pi terms q calculation of the dd term q capacitance measurement (after discharge of tested element) 7.3 power supply q the instrument is supplied by : - nimh rechargeable batteries - 8 x 1,2v / 3,5ah - external charging : 85 to 256v / 50-60hz...
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90 q minimum battery life (as per nf en 61557-2) q mean battery life assuming a 1-minute dar measurement 10 times a day and a 10-minute pi measurement 5 times a day, the battery life will be approximately 15 working days, or 3 weeks. Q charging time 6 hours to recover 100% capacity (10 hours if the ...
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91 7.7 variations within domain of use (1) the dar, pi and dd terms and the capacitance and leakage current measurements are included in the quantity "mΩ" 8. Maintenance for maintenance, use only the specified spare parts. The maker is not liable for any accident occurring following a repair done ot...
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92 remark : this fuse is in series with a 0.5 a / 3 kv internal fuse active only if there is a major fault in the instrument. If the display unit still indicates guard fuse after the fuse on the front panel is changed, the instrument must be sent in for servicing (see § 8.2). 8.1.3. Cleaning the ins...
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93 accessories : q pc software...........................................................................................................................P01.1019.38a q serial printer....................................................................................................................P0...
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94 190, rue championnet - 75876 paris cedex 18 - france tél. (33 0)1 44 85 44 85 - télex 269816 - fax (33 0)1 46 27 73 89 12 - 2003 code 689646a00 - ed. 1 deutschland - straßburger str. 34 - 77694 kehl /rhein - tél : (07851) 99 26-0 - fax : (07851) 99 26-60 españa - c/ roger de flor n°293 - planta 1...