Chauvin Arnoux C.A 5277 Guide De Démarrage page 7

PRECAUTIONS FOR USE
This instrument is compliant with the NF EN 61010-1 + NF EN
61010-2-030 safety standard for 1000 V voltages in category III or
600 V in category IV at an altitude below 2000 m, indoors, and with
a maximum pollution level of 2.
Failure to comply with safety instructions can create a risk of
electric shock, fire, explosion and destruction of the instrument or
the installations.
Do not use the instrument in an explosive atmosphere or in the
presence of inflammable gas or smoke.
Do not use the instrument on networks with a rated voltage or
category higher than those mentioned.
Respect the maximum rated voltages and currents between
terminals and in relation to the earth.
Do not use the instrument if it seems damaged, incomplete or
incorrectly closed.
Before each use, check the condition of the cable insulation, the
unit and the accessories. All elements on which the insulation is
damaged (even partially) must be put out of service for repair or
disposed of as waste.
Use cables and accessories for voltages according to IEC 61010-031
and measurement categories at least equal to those of the
instrument.
Respect the environmental conditions of use.
Strictly comply with the fuse specifications. Disconnect all cables
before opening the fuse access cover.
Do not modify the instrument and do not replace components
using equivalent parts. Repairs and adjustments must be carried
out by qualified, approved personnel.
Replace the battery as soon as the
display. Disconnect all cables before opening the battery access
cover.
Use personal protection equipment when conditions require it.
Do not place your hands close to terminals that are in use.
When handling sensors or test probes, do not place fingers
beyond the physical finger guard.
MEASUREMENT CATEGORIES
CAT II: Test and measurement circuits directly connected to points of use (power
outlets and other similar points) on the low-voltage network.
E.g. Measurements on circuits in network for household appliances, portable tools
and other similar instruments.
CAT III: Test and measurement circuits connected to parts of the building's low-
voltage network installation.
E.g. Measurements on distribution switchboards (including secondary meters), the
circuit breakers, cabling including cables, busbars, junction boxes, circuit breakers,
power outlets in the fixed installation and industrial instruments and other
equipment such as motors permanently connected to the fixed installation
CAT IV: Test and measurement circuits connected to the source of the building's
low-voltage network installation.
E.g. Measurement on equipment installed upstream of the main fuse or building
installation cut-off switch.
symbol appears on the
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