I.C.E Supertester 680 R Operator's Manual And Repair Manual page 8

VOLTA&E MEASIJREMENIS ff(}LTS) IN
AI.TERNATINO CURRENI
(4O()O
ohms/Volt)
To carry out alternating current v0ltage
measurements introduce
as far as
it
will go
one
of
the leads into the low socket
marked
in
red
"-"
(A.C.)
and
the
other lead
into
one
of
the
sockets also marked
in
red
"10
V-";
"50
Y
-"i "25A
V-";
"1000
V-";
"2500
V-,,;
according
to
the most suitable
range required,
When
a
high tension circuit has
t0
be measured (range up
to
2500 Volt) 0perate
with
great
care
because there
is the
danger
0l
an
electrical discharge and
make
sure therefcre not
to
touch
or
even
get too
close
to
the live
circuit.
Therefore
only
connect
the
Ieads
to
the
circuit to
be measured when
this is
not
live.
Then,
after
having made
sure that the
Tester,
the ieads and plugs are in a stable position and
correctiy set for
the particular
nleasurement,
that is
on an insulated table, far fr0m
any
part
0f the
body and any conductor
of
electricity,
the current may be
switched
on
t0
the circuit and the
reading taken without
however
touching the plugs or the
tester.
When there
is
any doubt ab0ut
the
voltage
to
be
measured,
alv,iays
plug into the
highest
range
so as to
avoid possible
overl0ads
to
the resislance.
lf
necessary, after the first
reading,
the
terminal
of
the various
ranges
can be inserted int0 the next
lowest range
so
that a
more accurate reading may be
obtained.
To
measure
within the
2
V
A.C. rating,
the first
Iead
is
introduced
into the
Iower
socket
nF - 9tl
marked
Ori
loirio
while
the
second
socket
to
be used
is
the
sarne used
for the 5c pA
{
and 100 mV
ranges.
ln
0rder
t0 get
an accurate reading of the
scale
rvith
referenc0
t0
the
range and therefore
to
the
selecied socket,
take into
account
the
data
of the
table
0f the
following
page.
For
the
ranges 4-20-100-500 and 2000 Volts A.C. use the
sockets
of
the
ranges 2-10-50-250
and 1000 Volts respectively, pressing the sensitivity button (AVx2) which
doubles
the
ranges
taken into
considerati0n,
to
make
this point
cleare, we report
in
the following the table
to
be taken into
account
for
the
c0rrect reading
of the
scale v'rith reference
t0 the
range
and
therefore
to
the selected
socket.
10
*
For these
two last
ranges,
due
t0
the high voltage which is very dangerous
for the
cperator,
carry
out the
measurement
without
touching
directly either the plugs or the analyser; therefore
switching
ihe current on the circuit only after having connected
the
analyser
with the circuit
to be
tested! All
possible
danger
of
short circuit through
the
body
will
be
consequently
p
revented.
The sca!e sector
t0
be read
for a!l
A.C.
measurements
(-)
is
the
first
red sector
locaied
below
the
mirror.
11
Numbering
to
be
read
on the
scale
from 0
to
10
from
0 to
200
from
0 to
200
from
0
to
20C
from
0
to
50
from
0
to
10
{i'om
0 to
250
from
0
to
50
{rom
0
to
10
from
0 to
200
from
0
to
250
Multiply
the
read-
ing
by
:
x
10
*lo
x 100
x
10
x10
: 100
:50
:10
Selected
I
Sockets to
range I
be
used
2
4
10
20
50
100
25A
500
-)and2v-l
xEi[H[
(-)
and
10
v-
|
iiii.niis
(-)
and
50
v- |
iiiFh?iss
(-)
and
2s0
v-
|
iiipnils
(-)
and 1000
v-
I
n'ri;?:s
(-)
and 2s00
v-
I
iir'ihtbs