Chauvin Arnoux C.A 6545 User Manual
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Chauvin Arnoux C.A 6545 User Manual

Megohmmeters
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EN - User's manual
Megohmmeters
C.A 6545
C.A 6547

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Summary of Contents for Chauvin Arnoux C.A 6545

  • Page 1 EN - User’s manual C.A 6545 C.A 6547 Megohmmeters...
  • Page 2 Thank you for purchasing a C.A. 6545 or C.A. 6547 megohmmeter. To obtain the best service from your instrument: „ read this user manual carefully, „ comply with the precautions for use. WARNING, risk of DANGER! The operator must refer to this user’s manual whenever this danger symbol appears. Equipment protected by double insulation.

  • Page 3: Table Of Contents

    CONTENTS 1. PRESENTATION ..................................4 1.1. The megohmmeters ............................... 4 1.2. The accessories (for the C.A 6547 only) ......................... 4 2. DESCRIPTION ..................................5 2.1. Casing .................................... 5 2.2. Display .................................... 7 3. MEASUREMENT FUNCTIONS ..............................8 3.1. AC/DC voltage ................................8 3.2.

  • Page 4: Presentation

    1. PRESENTATION 1.1. THE MEGOHMMETERS The C.A 6545 and C.A 6547 megohmmeters are portable units, fitted into a rugged construction site casing with cover, operating on battery or line power. They are used to measure: „ voltages, „ insulation, „ capacitance.

  • Page 5: Description

    2. DESCRIPTION 2.1. CASING ➇ ➆ 110-230V ➅ INTERFACE 50/60 Hz 20 VA max SET-UP 50-5000V ➁ > 2500V 5000V Ω 2500V Ω FF 0.1A ➂ 380V-10kA 1000V 5x20mm Ω 500V Ω ➀ V/ T IME SMOOTH ➃ ALARM START/STOP PRINT R-DAR-PI-DD 1000V CAT III...
  • Page 6 1 yellow START / STOP push button: start / stop of measurement. ➄ 6 keys (C.A 6545) or 8 keys (C.A 6547) made of elastomer, each having a main function and a secondary function: Selection of the second function (in yellow Italics above each key).

  • Page 7: Display

    2.2. DISPLAY min sec MEM MR OBJ. TEST DARDD µA µF ALARM SMOOTH REMOTE 2.2.1. DIGITAL DISPLAY The main digital display indicates the values for insulation measurement values: resistance, DAR PI, DD or capacitance). The small digital display indicates the voltage measured or applied by the instrument. During the insulation measurement, the elapsed time or the output voltage is displayed.

  • Page 8: Measurement Functions

    3. MEASUREMENT FUNCTIONS 3.1. AC/DC VOLTAGE Any rotation of the switch on an insulation position sets the unit to automatic AC / DC voltage measurement. The voltage is measured continuously and indicated on the small display. The start of the insulation measurements is inhibited if an excessively high external voltage is present on the terminals, before pressing START.
  • Page 9 Display of values after a measurement The indications below may be displayed: R-DAR-PI-DD key V-TIME key Small display Main display Small display if the MR key is activated (C.A 6547) Resistance duration (min. sec) date, time, test voltage, OBJ:TEST duration (min. sec) date, time, test voltage, OBJ:TEST duration (min.

  • Page 10: Special Functions

    4. SPECIAL FUNCTIONS 4.1. 2nd KEY This key is used to select the secondary functions of the function keys. It is always related to the symbol. This symbol disappears as soon as the selected function key is pressed, unless the q key is activated. In this case, it disappears only if the 2nd key is pressed again or if other function keys are pressed.
  • Page 11 The quality of the insulation is a function of the results. Condition of insulation < 1 Insufficient or even < 1,25 dangerous < 2 < 1,6 < 4 Good > 1,6 > 4 Excellent For multilayer insulation, if one of the layers is defective but if all the others show strong resistance, the calculation of the PI and PAR ratios is not sufficient to show up this type of problem.
  • Page 12 The time between each stored samples is programmed in the SET-UP configuration menu. This function is also available on model C.A 6545 that has no RAM for the storage of measured data, or interface to recover this data from the instrument on a PC.

  • Page 13: Alarm Key

    The V-TIME key is used to alternate between time and voltage (on the small display), with the value R on the main display. The pq key is used to scroll through all the samples stored during the measurement. This makes it possible to note the elements for an R(t) and U(t) diagram.
  • Page 14 The following table defines the active keys in the SET-UP function and the corresponding display, with the possible adjustment ranges. Display Parameters Control key to be modified main small symbols values Test duration, in “Programmed- tESt 30: 00 min. sec 01:00 - 59:59 time test"...
  • Page 15 4.7.1. MEMORY DELETION In SET-UP, press the MEM key: The MEM symbol flashes, „ ALL is shown flashing on the small display, „ The main display indicates cLR. „ To delete the entire memory, press again on the MEM key for 2 seconds: The MEM symbol is displayed steady, „...
  • Page 16 4.7.6. TEST VOLTAGE LIMIT In the SET-UP, 7 press on the key: The small display indicates 1000 V, „ The main display indicates OFF, „ Choose On or OFF using key pq and modify if necessary the value of the voltage using key u then key pq. „...

  • Page 17: Use

    5. USE 5.1. MEASUREMENT PROCEDURE „ Start up the instrument by setting the switch to the desired measurement position. All the segments of the LCD screen are displayed, then the battery voltage. „ Connect the + and - leads to the measurement points. „...

  • Page 18: Capacitance Measurement

    „ Connection diagram for measurement of high insulation values a) Example of a motor (reduction of capacitive effects) b) Example of a cable (reduction of surface leakage effects) Braid Insulator External insulator Guard Cable Core 5.3. CAPACITANCE MEASUREMENT Capacitance measurement is performed automatically during the insulation measurement, and is displayed after the measurement stops and the discharge of the circuit, using the R-DAR-PI-DD key.

  • Page 19: Memory / Rs 232 (C.a 6547)

    6. MEMORY / RS 232 (C.A 6547) 6.1. RS 232 CHARACTERISTICS „ The speed in bauds may be adjusted 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 § 4.7.2). „...

  • Page 20: Recording/Playback Of Stored Values (Mem/Mr Key)

    6.2. RECORDING/PLAYBACK OF STORED VALUES (MEM/MR KEY) 6.2.1. PRIMARY MEM FUNCTION (STORAGE) This function is used to record results in the device’s RAM. These results can be recorded at an address identified by an object number (OBJ) and a test number (TEST). An object represents a “box”...
  • Page 21 „ To stop printing, change the position of the rotary switch. Depending on the function used, the following models are obtained. „ Insulation Measurements CHAUVIN ARNOUX C.A 6547 Instrument number: 000 001 INSULATION RESISTANCE TEST PURPOSE: 01 TEST: 01 (printed only in MR mode) Description: .........

  • Page 22: Printing With Series-Parallel Adapter

    4. Turn on the C.A 6547 5. Set “Parallel” in SET-UP; for the baud rate setting, see § 4.7.2. CAUTION: This adapter is designed to be used with the C.A 6545 and the C.A 6547 and cannot be used with any other applications.

  • Page 23: Specifications

    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 Magnetic field...
  • Page 24 „ Accuracy Test voltage 500 V - 1000 V - 2500 V - 5000 V 10...999 kΩ 4.00...39.99 MΩ 40.0...399.9 MΩ Specified measurement range 1.000...3.999 MΩ Resolution 1 kΩ 10 kΩ 100 kΩ Accuracy ±5% + 3 pt 1000 V - 2500 V 2500 V Test voltage 500 V - 1000 V - 2500 V - 5000 V...
  • Page 25 „ Typical change curve for test voltages according to load Range 500 V MΩ 0,01 Range 1000 V 1200 1000 MΩ 0,01 Range 2500 V 3000 2500 2000 1500 1000 MΩ 0,01...

  • Page 26: Power Supply

    Range 5000 V 6000 5000 4000 3000 2000 1000 MΩ 0,01 „ Capacitance measurement (after discharge of tested component) Specified measurement range 0.005...9.999 µF 10.00...49.99 µF Resolution 1 nF 10 nF Accuracy 10% +1 pt „ Leakage current measurement Specified 0.000 to 0.251 to 10.00 to...

  • Page 27: Environmental Parameters

    „ Minimum operating time (per IEC 61557-2) Test voltage 500 V 1000 V 2500 V 5000 V Nominal load 500 kΩ 1 MΩ 2.5 MΩ 5 MΩ Number of 5-s measurements at nominal load (with 25-s pause 6500 5500 4000 1500 between measurements) „...

  • Page 28: Variations In Operating Range

    7.7. VARIATIONS IN OPERATING RANGE Influence Influence Quantity Range of influence quantity influenced Typical Maximum < 1 pt 2 pt Battery voltage 9...12 V MΩ < 1 pt 3 pt 0.15%/10°C 0,3%/10°C +1 pt Temperature -10...+55°C MΩ 0.20%/10°C 1%/10°C + 2 pt 0.2% 1% +2 pt Humidity...

  • Page 29: Maintenance

    „ bAt on the small display and FULL in the main display means that charging is completed. The battery must be replaced by Manumesure or by a repairer approved by CHAUVIN ARNOUX. Changing the battery entails the loss of stored data. Pressing on the MEM / MR key then causes the display of “OFF”. Proceed with a complete deletion of the memory in the SET-UP menu (see §...

  • Page 30: Guarantee

    9. GUARANTEE 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: „...

  • Page 31: Delivery Condition

    10. DELIVERY CONDITION C.A 6545 Megohmmeter C.A 6547 Megohmmeter Delivered with bag containing: „ 1 cable DB9F-DB9F (C.A 6547) „ 1 adapter DB9M-DB9M (C.A 6547) „ 2 x 3 m safety leads, fitted with a HV plug and a HV alligator clip (red and blue) „...
  • Page 32 FRANCE INTERNATIONAL Chauvin Arnoux Group Chauvin Arnoux Group 190, rue Championnet Tél : +33 1 44 85 44 38 75876 PARIS Cedex 18 Fax : +33 1 46 27 95 69 Tél : +33 1 44 85 44 85 Our international contacts Fax : +33 1 46 27 73 89 info@chauvin-arnoux.com...

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C.a 6547P01139701c

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