Chauvin Arnoux C.A 6608 Bedienungsanleitung Seite 13

Definitions of the measurements categories
CAT II: Circuits directly connected to the low-voltage

installation.
Example: power supply to household electrical appliances and
portable tools.
CAT III: Power supply circuits in the installation of the building.

Example: distribution panel, circuit-breakers, fixed industrial
machines or devices.
CAT IV: Circuits supplying the low-voltage installation of the

building.
Example: power lines, meters, and protection devices.
1 PRECAUTIONS AND SAFETY IN USE
This instrument complies with safety standard IEC 61010 - 1.
For your own safety, and to prevent any damage to your instrument,
you must follow the instructions given in this manual.
This instrument can be used on category III electrical circuits not
exceeding 600V with respect to earth. It must be used indoors, in
an environment not exceeding pollution level 2, at an altitude of not
more than 2000m. The instrument can therefore be used in
complete safety on 400V and 690V three-phase networks in an
industrial environment.
For safety reasons, you must use only measurement leads

having a voltage rating and category at least equal to those of the
instrument and compliant with standard IEC 61010-031.
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