Velleman DVM4000 User Manual
Page 6
27.10.2010
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that might
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The existing
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CAT II
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CAT III
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CAT IV
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Warning:
This device
IV 600V / C
related to v
use. Refer t
This devic
•
Protected
electronic
•
circuits th
o
measu
means
o
mono-
domes
CAT IV
more t
• measurem
meter bo
• measurem
CAT IV-e
bars, low
circuit.
Switch off the met
or fuses.
When carrying out
lways be aware th
might damage the
ervoltage/ins
categorized depend
occur at the point
a system, e.g. cau
g categories accor
CAT I-rated mete
ircuits that are not
ircuits, control sign
CAT II-rated met
nd mono-phase ap
plug and circuits
ircuit is at least 10
nvironment. E.g. h
CAT III-rated me
nvironments, as w
hased appliances w
nvironment, and f
ow-voltage distrib
CAT IV-rated met
II-environments as
ote that for all me
un outdoors (eithe
sed.
was designed in a
CAT III 1000V. Thi
voltages and voltag
to the table above
e is suitable for
d electronic circuits
cs circuits, control
hat are directly co
rements on mono
s of a plug
phase appliances
stic environment, p
V-environment. E.g
than 10m from a d
ments in/on low-v
ox)
ments on (fixed) m
nvironments (e.g.
w-voltage distributi
DVM4x0
6
er and remove tes
measurements on
hat high amplitude
meter.
stallation cat
ding on the risk an
of test. Transients
used by lightning s
rding EN 61010-1
er is suitable for m
t directly connecte
nals…
er is suitable for m
ppliances that are
in a normal domes
0m apart from a CA
household applianc
ter is suitable for
well as for measure
which are at least
for measurements
bution boards, ligh
ter is suitable for m
s well as on the pr
easurements on eq
er overhead or und
accordance with EN
s implies that cert
ge peaks which ca
e.
measurements u
s that are not dire
signals, circuits b
nnected to mains
-phase appliances
and circuits direct
provided that the c
g. household appli
distribution board …
voltage distribution
mono- or poly-pha
mains outlets, ele
ion boards and circ
0
st probes prior to r
n a TV set or switc
e voltage pulses at
tegory
nd severity of tran
s are short-lived b
strike on a power l
are:
measurements on p
ed to mains power
measurements in C
connected to the
stic environment,
AT III- or 20m apa
ces, portable tools
measurements in
ements on (fixed)
10m apart from o
in or on distributio
ting circuits, elect
measuring in CAT
rimary supply leve
quipment for which
derground) a CAT
N 61010-1 installa
tain restrictions in
n occur within the
up to 1000V:
ectly connected to
behind isolating tra
power, but limited
s that are connecte
ly connected to th
circuit is at least 1
ances, portable to
…
n boards (distribut
ased appliances an
ectric ovens, lighti
cuit breakers).
©Velleman
replacing the batte
hing power circuit
t the test points
nsient overvoltage
bursts of energy
ine.
protected electroni
r, e.g. electronics
CAT I-environment
mains by means o
provided that the
art from a CAT IV-
s…
CAT I- and CAT II
mono- or poly-
of a CAT IV-
on level equipmen
ric ovens).
I-, CAT II- and CA
el.
h the supply cable
IV meter must be
ation category CAT
use apply that are
e environment of
mains power, e.g.
ansformer…
d to:
ed to the mains by
he mains in a norm
0m apart from a
ools, light circuits a
ion boards behind
nd circuits except i
ing circuits, bus
nv
ery
s,
c
ts
of
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