English
Definitions of the measurements categories :
CAT I : Circuits not directly connected to the network and
specially protected.
Example : protected electronic circuits.
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, Ed
2 of February 2001.
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
14