Velleman DVM1500 - Manual (Page 6)

DVM1500
V. 03 – 04/11/2013 6 ©Velleman nv
CAT III A CAT III-rated meter is suitable for measurements in CAT I and
CAT II environments, as well as for measurements on (fixed) mono-
or poly-phased appliances which are at least 10 m apart from a
CAT IV environment, and for measurements in or on distribution
level equipment (fuse boxes, lighting circuits, electric ovens).
CAT IV A CAT IV-rated meter is suitable for measuring in CAT I, CAT II and
CAT III environments as well as on the primary supply level.
Note that for all measurements on equipment for which the supply
cables run outdoors (either overhead or underground) a CAT IV
meter must be used.
Warning: This device was designed in accordance with EN 61010-1
installation category CAT III 600V / CAT II 1000V. This implies that certain
restrictions in use apply that are related to voltages and voltage peaks which
can occur within the environment of use. Refer to the table above.
This device is suitable for measurements up to 1000 V:
Protected electronic circuits that are not directly connected to mains power,
e.g. electronics circuits, control signals, circuits behind isolating
transformer…
circuits that are directly connected to mains power, but limited to:
o measurements on mono-phase appliances that are connected to the
mains by means of a plug
o mono-phase appliances and circuits directly connected to the mains in a
normal domestic environment, provided that the circuit is at least 10 m
apart from a CAT III, or 20 m apart from a CAT IV environment.
E.g. household appliances, portable tools, light circuits at more than
10 m from a distribution board…
This device is suitable for measurements up to 600 V:
measurements in/on low-voltage distribution boards (distribution boards
behind meter box)
measurements on (fixed) mono- or poly-phased appliances and circuits
except in CAT IV environments (e.g. mains outlets, electric ovens, lighting
circuits, bus bars, low-voltage distribution boards and circuit breakers).
This device is NOT suitable for:
Voltages above 1000 V
Measurements on distribution equipment and outdoor installations
including meter boxes and equipment/circuits outside or remote from the
domestic environment e.g. circuits in sheds, garden houses and free-
standing garages, or circuits using underground wiring e.g. garden lighting,
pool-pump…
This device is only suitable for measurements up to 600 V in CAT III
and up to 1000 V in CAT II.
5. Pollution Degree
IEC 61010-1 specifies different types of pollution environments, for which
different protective measures are necessary to ensure safety. Harsher
environments require more protection, and the protection against the