Velleman DVM68 Bedienungsanleitung Seite 5

Switch off the meter and remove test probes prior to replacin
All modifications of the device are forbidden for safety reason
user modifications to the device is not covered by the warran
4. Overvoltage/installation category
DMMs are categorized depending on the risk and severity of transient over
occur at the point of test. Transients are shortBlived bursts of energy induc
caused by lightning strike on a power line.
The existing categories according EN 61010B1 are:
A CAT IBrated meter is suitable for measurements on protected ele
CAT I
are not directly connected to mains power, e.g. electronics circuits
A CAT IIBrated meter is suitable for measurements in CAT IBenviro
phase appliances which are connected to the mains by means of a
CAT II
normal domestic environment, provided that the circuit is at least
IIIB or 20m apart from a CAT IVBenvironment. E.g. household app
A CAT IIIBrated meter is suitable for measurements in CAT IB and
as well as for measurements on (fixed) monoB or polyBphased app
CAT III
least 10m apart from of a CAT IVBenvironment, and for measurem
distribution level equipment (fuse boxes, lighting circuits, electric
A CAT IVBrated meter is suitable for measuring in CAT IB, CAT IIB
environments as well as on the primary supply level.
CAT IV
Note that for all measurements on equipment for which the supply
(either overhead or underground) a CAT IV meter must be used.
Warning:
This device was designed in accordance with EN 61010B1 installation categ
II 1000V. This implies that certain restrictions in use apply that are related
voltage peaks which can occur within the environment of use. Refer to the
This device is suitable for measurements up to 1000V on:
Protected electronic circuits which are not directly connected to mains p
•
circuits, control signals, circuits behind isolating transformer...
circuits which are directly connected to mains power, but limited to:
•
measurements on monoBphase appliances which are connected to the
o
plug
monoBphase appliances and circuits directly connected to the mains i
o
environment, provided that the circuit is at least 10m apart from a CA
from a CAT IVBenvironment. E.g. household appliances, portable tool
than 10m from a distribution board ...
This device is suitable for measurements up to 600V:
measurements in/on lowBvoltage distribution boards (distribution board
•
measurements on (fixed) monoB or polyBphased appliances and circuits
•
environments (e.g. mains outlets, electric ovens, lighting circuits, bus b
distribution boards and circuit breakers).
This device is NOT suitable for:
Voltages above 1000V
•
Measurements on distribution equipment and outdoor installations inclu
•
equipment/circuits outside or remote from the domestic environment e
garden houses and freeBstanding garages , or circuits using undergroun
lighting, poolBpump...
This device is only suitable for measurements up to 600V in CAT
in CAT II environments.
25.02.2011
DVM68
5
Rev. 01
cing the battery or fuses.
sons. Damage caused by
ranty.
ervoltage that might
uced in a system, e.g.
electronic circuits which
its, control signals...
ironments and monoB
f a plug and circuits in a
st 10m apart from a CAT
ppliances, portable tools...
nd CAT IIBenvironments,
ppliances which are at
ments in or on
ic ovens).
and CAT IIIB
ply cables run outdoors
tegory CAT III 600V / CAT
ted to voltages and
he table above.
s power, e.g. electronics
the mains by means of a
s in a normal domestic
CAT IIIB or 20m apart
ools, light circuits at more
ards behind meter box)
its except in CAT IVB
s bars, lowBvoltage
cluding meter boxes and
t e.g. circuits in sheds,
ound wiring e.g. garden
AT III and up to 1000V
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