Table of Contents
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Table of Contents
Related Manuals for Chauvin Arnoux C.A 6521
Summary of Contents for Chauvin Arnoux C.A 6521
- Page 1 C.A 6521 MEGOHMMETRES MEGOHMMETERS C.A 6523 MEGOHMMETER MEGAOHMMETRI MEGAÓHMETRO C.A 6525 F R A N Ç A I S Notice de fonctionnement E N G L I S H User's manual D E U T S C H Bedienungsanleitung I T A L I A N O Libretto d’Istruzioni...
- Page 2 For safety reasons, this symbol will light up on the LCD screen as soon as a voltage is generated. Thank you for purchasing a C.A 6521, C.A 6523 or C.A 6525 insulation tester. To get the best service from this instrument : read this user’s manual carefully...
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Page 3: Table Of Contents
1.1.1. The Megohmmeter ..........25 1.1.2 Accessories ............25 DESCRIPTION 2.1. Unit ................26 2.1.1. C.A 6521 ..............26 2.1.2. C.A 6523 ..............26 2.1.3. C.A 6525 ..............26 2.2. Display ................26 2.2.1. Symbols ..............26 2.2.2. Bargraph ..............27 2.2.3. - Page 4 5.1. Insulation testing ............35 5.2. Continuity measurements ..........35 5.3. Resistance measurements (C.A 6523 and C.A 6525) ..36 CHARACTERISTICS 6.1. Reference conditions ............ 36 6.2. Characteristics per function .......... 36 6.2.1. Voltage ..............36 6.2.2. Insulation ..............36 6.2.3.
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Page 5: Presentation
1. PRESENTATION Terminology The term “continuity” will be used to mean a resistance measurement performed with a current of at least 200 mA (with the measured resistance lower than 20 Ω) in accordance with the IEC 61557 norm, to distinguish it from a resistance measurement (C.A 6523 and C.A 6525) performed with a current that is not predefined. -
Page 6: Description
See the diagrams of the instruments in § 10 (appendix at the end of this user’s manual) 2.1.1. C.A 6521 2 safety terminals, Ø 4 mm (marked “ + “ and “ - “) 5-way switch: OFF, MΩ - 250 V, MΩ - 500 V, 20 Ω... -
Page 7: Bargraph
Dangerous voltage generated See the user’s manual > 25 V Voltage > 25 V Compensated leads Buzzer active Constant operation (no automatic shutdown) Batteries flat Fixed and Flashing : incorrect compensation of the leads 2.2.2. Bargraph Insulation > 2 GΩ Insulation <... -
Page 8: Key (C.a 6523 And C.a 6525)
2.3.4. Key (C.A 6523 and C.A 6525) When programming the alarm thresholds, the key can be used to scroll through the possible values, which flash, and then loop back to the beginning : MΩ or GΩ for insulation, kΩ or Ω for resistance, for the measurement units, 1,2, 3 or _ for the thousands digit, 0, 1, 2, 3, 4, 5, 6, 7, 8 and 9 for the hundreds, tens and units,... -
Page 9: Insulation Measurement
3.1.2. Insulation measurement If there is not a dangerous voltage (see § 3.1.1.), the user can then measure the insulation by pressing the yellow key. The high voltage is then generated between the terminals (marked + and -). The value of the measurement is shown on the logarithmic scale of the bargraph and on the digital display, with the corresponding MΩ... -
Page 10: Resistance (C.a 6523 And C.a 6525)
Specific remark concerning the C.A 6521 : In continuity mode, a lower threshold of 2 Ω is constantly active. However, the buzzer can be deactivated by pressing the yellow key. Resistance (C.A 6523 and C.A 6525) Resistance measurement corresponds to the 400 kΩ position of the switch on the C.A 6523 or C.A 6525. -
Page 11: Deactivation Of Automatic Shutdown Function
4.2.1. Deactivation of automatic shutdown function (C.A 6523 and C.A 6525) Press the button when switching on the device via the rotating switch. The symbol is displayed, indicating that the automatic shutdown function has been deactivated. To reactivate the automatic shutdown function, switch the instrument off (turn the switch to OFF) and then switch it back on again. -
Page 12: Deactivation Of The Buzzer
4.4.2. Deactivation of the buzzer C.A 6521 : set the switch to continuity measurement (20 Ω + or 20 Ω -) and then press the yellow key. The buzzer is then deactivated and the symbol is no longer displayed. To reac- tivate the buzzer, press the yellow key again or switch the instrument off and then back on again. -
Page 13: Triggering Of The Alarm
The ALARM symbol, the < or > symbol, the programmed value of the threshold and the corresponding unit are then displayed on the digital threshold display. The threshold can be deactivated by a second short press on the key. The ALARM symbol, the < or > symbol, the programmed value of the threshold and the corresponding unit disappear. -
Page 14: Timer (C.a 6525)
4.7. Timer (C.A 6525) The timer function is available for insulation testing (MΩ positions). When you press the TIMER key, the symbol appears in front of the digital threshold display which indicates 0:00 (timer). If there was a programmed threshold displayed, it disappears. An initial short press on the yellow key starts both the timer and insulation measurement. -
Page 15: Insulation Testing
5.1. Insulation testing (see § 10.1 Examples of applications) Start up the instrument by setting the switch to MΩ which will provide the required voltage. Connect the lead from the “ + ” terminal to the cold point and the lead of the “ - ” terminal or the remote control probe of the C.A 6523 or C.A 6525 to the hot point. -
Page 16: Resistance Measurements (C.a 6523 And C.a 6525)
This voltage detection is automatic before and after the insulation measurements have been performed. Indicating range: 0...600 V AC/DC 6.2.2. Insulation Measurement range : C.A 6521 : at 250 V 50 kΩ to 2 GΩ at 500 V 100 kΩ to 2 GΩ C.A 6523 : at 500 V 100 kΩ... -
Page 17: Continuity
Analogue calibre 50 kΩ...2 GΩ 10-unit interval Resolution 8 segments per Accuracy 5 % L ± 1 segment Digital 0.01 to 0.20 to 40.0 to 400 MΩ calibres 0.19 MΩ 39.99 MΩ 399.9 MΩ to 2 GΩ Resolution 10 kΩ 100 kΩ... -
Page 18: Timer (C.a 6525)
6.2.5. Timer (C.A 6525) Measurement range : 0 to 15 min Calibre 0:00 to 15:00 Resolution 1 second Accuracy 0.5 % L 6.3. Power supply The instrument is powered by 6 x 1.5 V alkaline batteries, type LR6. Measurement Average* Average consumption charge life... -
Page 19: Limits
6.6. Limits The three apparatuses are protected on all the nominal ranges against a voltage of 720 V AC/DC applied continuously between the two terminals. The C.A. 6523 and C.A. 6525 models are protected on the MΩ nominal range for 1,200 V AC and DC for 10 seconds. 6.7. -
Page 20: Replacing The Fuse
Check that none of the terminals is connected and that the switch is set to OFF before opening the battery compartment. The hatch is located on the back of the unit. It can be opened and closed using a coin or a large screwdriver (1/4-turn captive screw). -
Page 21: Warranty
(extract from our General Conditions of Sale, available on request). 9. TO ORDER C.A 6521 ............... P01.1408.01 C.A 6523 ............... P01.1408.02 C.A 6525 ............... P01.1408.03 Each instrument is delivered with a shoulder bag for transport and hands-free use of the instrument and its accessories, 2 elbowed-straight safety leads (red +black), 1.5 m long...