Presentation; The Megohmmeters; The Accessories (For The C.a 6547 Only) - Chauvin Arnoux C.A 6545 Notice De Fonctionnement

1. PRESENTATION

1.1. THE MEGOHMMETERS

The C.A 6545 and C.A 6547 megohmmeters are portable units, fi tted into a rugged construction site
casing with cover, operating on battery or line power.
They are used to measure:
 voltages,
 insulation,
 capacitance.
These megohmmeters help to ensure the safety of electrical installations and equipment.
Their operation is controlled by microprocessor for the acquisition, processing, measurement display,
storage and printing of results (C.A 6547).
They offer a wide range of advantages such as:
 digital fi ltering of insulation measurements,
 automatic voltage measurement,
 automatic detection of the presence of AC or DC external voltage on terminals, before or during the
measurements, which inhibits or stops the measurements,
 threshold programming, to trigger alarms using audible beeps,
 the timer for measurement time checks,
 protection of the device by fuse, with detection of defective fuses,
 operator safety by means of automatic discharge of the residual high voltage on the equipment tested,
 automatic power save mode of the device to save battery power,
 indication of battery charge condition,
 a large backlit LCD screen with a wide range of indicators making it very easy for the user to read.
The C.A 6547 integrates the following additional functions:
 Memory (128 kb), real time clock and serial interface,
 PC control of the device (using PC software, optional),
 Printing in RS 232 or Centronics mode.

1.2. THE ACCESSORIES (FOR THE C.A 6547 ONLY)

1.2.1. PC SOFTWARE (OPTIONAL)
This PC software is used for:
 recovering stored data, plotting the insulation resistance versus the test voltage application time, R(t),
 printing customised test protocols in accordance with user needs,
 creating text fi les to use spreadsheets (Excel
TM
...),
 confi guring and controlling the unit via the RS 232,
The minimum recommended confi guration is a PC fi tted with a 486DX100 processor.
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