Velleman DVM1400 - Manual (Page 5)

28.06.20
CAT III
CAT IV
Warning
This dev
implies t
can occu
This dev
• Prote
circu
• circu
o me
plu
o mo
env
fro
tha
• meas
• meas
envir
distr
This dev
• Volta
• Meas
equip
gard
light
5. Po
IEC 610
measure
protectio
the insul
which en
Pollution
Pollution
Pollution
Pollution
010
A CAT III-rate
as well as for
least 10m apa
distribution lev
A CAT IV-rate
environments
Note that for a
(either overhe
g:
vice was design
that certain res
ur within the en
vice is suitab
ected electroni
uits, control sig
uits which are d
easurements o
ug
ono-phase app
vironment, pro
om a CAT IV-en
an 10m from a
surements in/o
surements on
ronments (e.g.
ibution boards
vice is NOT su
ages above 600
surements on d
pment/circuits
en houses and
ing, pool-pump
This device is
llution deg
10-1 specifies
es are necessar
on against the
lation and the
nvironment the
n degree 1 No
influ
n degree 2 Onl
cau
und
n degree 3 Con
bec
env
with
n degree 4 The
rain
hum
ed meter is suit
measurements
art from of a CA
vel equipment
d meter is suit
as well as on t
all measureme
ead or undergr
ned in accordan
strictions in use
nvironment of
ble for measur
c circuits which
gnals, circuits b
directly connec
n mono-phase
liances and cir
ovided that the
nvironment. E.
distribution bo
on low-voltage
(fixed) mono-
. mains outlets
and circuit bre
uitable for:
0V
distribution eq
outside or rem
d free-standing
p...
only suitable f
gree
different types
ry to ensure sa
pollution which
enclosure prop
e device may b
pollution or on
uence (only to
y nonconductiv
sed by conden
der this catego
nductive polluti
comes conducti
vironments and
h precipitation)
e pollution gene
n or snow. (exp
midity levels or
DVM14
5
table for meas
s on (fixed) mo
AT IV-environm
(fuse boxes, l
table for measu
the primary su
ents on equipm
ound) a CAT IV
nce with EN 61
e apply that ar
use. Refer to t
rements up to
h are not direc
behind isolating
cted to mains p
appliances wh
rcuits directly c
e circuit is at le
g. household a
oard …
distribution bo
or poly-phased
s, electric oven
eakers).
uipment and o
mote from the
garages , or c
for measureme
s of pollution e
afety. Harsher
h is to be foun
perties. The po
be used.
nly dry, noncon
be found in he
ve pollution oc
nsation is to be
ry).
ion occurs, or d
ive due to cond
d environments
).
erates persiste
posed outdoor
r high concentr
00
urements in CA
ono- or poly-ph
ment, and for m
ighting circuits
uring in CAT I-
upply level.
ment for which t
V meter must
1010-1 installat
re related to vo
the table above
o 600V on:
ctly connected
g transformer…
power, but limi
hich are connec
connected to th
east 10m apart
appliances, por
oards (distribu
d appliances an
ns, lighting circ
outdoor installa
domestic envir
circuits using u
ents up to 600
nvironments, f
environments
d in a certain e
ollution degree
nductive polluti
ermetically sea
ccurs. Occasion
e expected (hom
dry nonconduc
densation that
s exposed to o
ent conductivity
environments
rations of fine p
AT I- and CAT
hased applianc
measurements
s, electric oven
, CAT II- and C
the supply cab
be used.
tion category C
oltages and vo
e.
to mains powe
…
ted to:
cted to the ma
he mains in a n
t from a CAT II
rtable tools, lig
tion boards be
nd circuits exc
uits, bus bars,
ations including
ronment e.g. c
underground w
0V in CAT III
for which differ
require more p
environment de
rating of the D
ion occurs. The
aled enclosures
nally, temporar
me and office e
ctive pollution o
is to be expec
utside air - but
y caused by co
and environm
particles occur
Rev
©Vellema
II-environmen
ces which are a
in or on
s).
CAT III-
bles run outdoo
CAT III 600V. T
ltage peaks wh
er, e.g. electron
ins by means o
normal domest
I- or 20m apa
ht circuits at m
ehind meter bo
ept in CAT IV-
low-voltage
g meter boxes
ircuits in sheds
iring e.g. garde
environments.
rent protective
protection, and
epends mainly
DVM indicates i
e pollution has
s).
ry conductivity
environments f
occurs that
cted (industrial
t not in contac
onductive dust
ents where hig
r)
v. 02
n nv
nts,
at
ors
This
hich
nics
of a
ic
rt
more
x)
and
s,
en
d the
y on
in
no
fall
t
or by
gh