Presentation; The Megohmmeters; The Accessories - Chauvin Arnoux C.A 6545 Notice De Fonctionnement

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 and on AC current.
They are used to measure:
voltages:
insulation,
capacity.
These megohmmeters help to ensure the safety of electrical installations and equipment.
Their operation is controlled by microprocessor for the acquisition, processing, measurement display,
memorisation and printing of results (C.A 6547).
They offer a wide range of advantages such as:
digital filtering 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 stopping 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 series interface
PC control of the device (using MEGOHM VIEW software, optional)
Printing in RS 232 or Centronics mode
1.2

The accessories

"Megohm View" PC software (optional for C.A 6547)
PC software is used for:
- recovering memorised data, plotting the insulation development curve in accordance with the application
time of the test voltage R (t),
- printing personalised test protocols in accordance with user needs,
- creating text files to use spreadsheets (Excel
- configuring and controlling the unit via the RS 232.
The minimum recommended configuration is a PC fitted with a 486DX100 processor.
Serial printer (option)
This compact printer is used to print the measurement results directly in the field, whether memorised or not.
Series-parallel adapter (option)
The optional RS232/Centronics adapter converts the serial interface (RS232) into a parallel printer
interface (Centronics), enabling direct printing of all measurements on A4-format office printers, without
having to use a personal computer.

1. PRESENTATION

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