Chauvin Arnoux F401 Guide De Démarrage page 11

Clamp Multimeter F401
MEASUREMENT CATEGORIES
Definitions of the measurement 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.
7
1 PRESENTATION
1
Item
Jaws with centring marks (see
1
connection principles)
2
2 Physical guard
3 Switch
3
4 Function keys
5 Display unit
4
6 Terminals
7 Trigger
5
6
English
Designation