Velleman DVM4200 - Manual (Page 6)

22.04.2011
Wh
alw
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4. Over
DMMs are ca
that might o
induced in a
The existing
CAT I
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cir
cir
CAT II
A C
an
a p
cir
env
CAT III
A C
env
ph
env
(lo
CAT IV
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III
No
run
use
Warning:
This device w
IV 600V / CA
related to vo
use. Refer to
This device
• Protected
electronics
• circuits tha
o measure
means o
o mono-p
domesti
CAT IV-
more th
• measurem
meter box
• measurem
CAT IV-en
bars, low-
This device
• Measurem
boxes and
e.g. circuit
undergrou
hen carrying out me
ways be aware that
ight damage the me
rvoltage/insta
ategorized dependin
ccur at the point of
system, e.g. cause
categories accordin
CAT I-rated meter i
cuits that are not d
cuits, control signa
CAT II-rated meter
d mono-phase appl
plug and circuits in
cuit is at least 10m
vironment. E.g. hou
CAT III-rated meter
vironments, as wel
ased appliances wh
vironment, and for
ow-voltage distribut
CAT IV-rated meter
-environments as w
ote that for all meas
n outdoors (either o
ed.
was designed in acc
AT III 1000V. This i
oltages and voltage
o the table above.
e is suitable for m
electronic circuits t
s circuits, control si
at are directly conn
ements on mono-p
of a plug
hase appliances an
ic environment, pro
environment. E.g.
han 10m from a dist
ments in/on low-volt
x)
ments on (fixed) mo
nvironments (e.g. m
voltage distribution
e is suitable for m
ments on distribution
d equipment/circuits
ts in sheds, garden
und wiring e.g. gard
DVM4200
6
easurements on a T
t high amplitude vo
eter.
allation categ
ng on the risk and s
f test. Transients ar
ed by lightning strik
ng EN 61010-1 are
s suitable for meas
directly connected to
ls…
is suitable for mea
liances that are con
a normal domestic
m apart from a CAT I
usehold appliances,
r is suitable for mea
l as for measureme
hich are at least 10m
measurements in o
tion boards, lighting
r is suitable for mea
well as on the prima
surements on equip
overhead or underg
cordance with EN 6
mplies that certain
peaks which can o
easurements up t
that are not directly
gnals, circuits behi
nected to mains pow
hase appliances tha
d circuits directly c
ovided that the circu
household applianc
tribution board …
tage distribution bo
ono- or poly-phased
mains outlets, electr
n boards and circuit
easurements up t
n equipment and ou
s outside or remote
houses and free-st
den lighting, pool-pu
TV set or switching
ltage pulses at the
gory
severity of transient
re short-lived bursts
ke on a power line.
:
surements on protec
o mains power, e.g
surements in CAT I
nnected to the main
environment, prov
III- or 20m apart fr
, portable tools…
asurements in CAT
ents on (fixed) mon
m apart from of a C
or on distribution le
g circuits, electric ov
asuring in CAT I-, C
ary supply level.
pment for which the
ground) a CAT IV m
1010-1 installation
restrictions in use
ccur within the env
to 1000V:
y connected to main
nd isolating transfo
wer, but limited to:
at are connected to
onnected to the ma
uit is at least 10m a
ces, portable tools,
oards (distribution b
d appliances and cir
ric ovens, lighting c
breakers).
to 600V:
utdoor installations
e from the domestic
tanding garages , o
ump...
©Velleman nv
power circuits,
test points
t overvoltage
s of energy
cted electronic
. electronics
I-environments
ns by means of
ided that the
rom a CAT IV-
I- and CAT II-
o- or poly-
CAT IV-
evel equipment
vens).
CAT II- and CAT
e supply cables
eter must be
category CAT
apply that are
vironment of
ns power, e.g.
ormer…
the mains by
ains in a normal
apart from a
light circuits at
boards behind
rcuits except in
ircuits, bus
including meter
c environment
or circuits using