Gossen Metrawatt GmbH
15
SECU
TEST ST
B
ASE
(
10
) /
P
RO
and SECU
LIFE ST
BASE
(25)
7
Initial Startup
Initial startup of the test instrument is con-
ducted by connecting it to the power supply.
The following sections describe operation,
as well as how to select various basic set-
tings.
7.1
Connecting the Test Instrument to the
Mains
➭
See section 6 for nominal mains values
(nominal ranges of use).
➭
Connect the mains cable to the test in-
strument via its inlet plug and insert the
mains plug into an electrical outlet. Any
rotary switch position can be selected.
If a mains outlet (earthing contact outlet)
isn’t available, or if only a 3-phase outlet
is available, the adapter socket can be
used to connect the phase conductor,
the neutral conductor and the protective
conductor. The adapter socket has three
permanently attached cables and is in-
cluded with the KS13 cable set.
Attention!
!
If connection isn’t possible via an
earthing contact outlet: Shut down
mains power first.
Then connect the cables from the
coupling socket to the mains using
pick-off clips in accordance with the
diagram.
Disconnection from mains power is
only possible via the mains plug.
Measurements in IT Systems
The
IT System
setting can be activated in the
SETUP
switch position (Setup 1/3) in the
All
Measurements
submenu:
With
“Measurement at IT system” set to Yes:
active leakage current measurements (or all
measurements with reference to PE at the
mains connection side) are disabled. Test
sequences which include measurements of
this sort are also disabled.
7.2
Automatic Recognition of Mains Con-
nection Errors
The device automatically recognizes mains
connection errors if the conditions in the fol-
lowing table have been fulfilled. The user is
informed of the type of error, and all measur-
ing functions are disabled in the event of
danger.
1
10/25 A R
PE
measurements are only possible with
line voltages of 115/230 V and line frequencies of
50/60 Hz.
2
If the user of the test instrument is too well insulat-
ed, the following error message may appear:
“Interference voltage at mains connection PE”
Attention!
!
In the event of mains connection er-
rors as described in either of the first
two cases in the table above, imme-
diately disconnect the test instrument
from the mains and arrange to have
the error eliminated!
Attention!
!
If
, while testing protective conductor
potential, you determine that
the
mains protective conductor is conducting
voltage
(in accordance with the first
two mentioned cases),
no further
measurements may be performed with
the test instrument
. If this is the case,
Type of Mains
Connection Error
Message
Condition
Measure-
ments
Voltage at
protective conduc-
tor PE to finger
contact (
START/
STOP
key)
Display
Press the
START/STOP
key:
U
25 V
key
PE:
< 1 M
2
All
measure-
ments
disabled
Protective conduc-
tor PE & phase
conductor L
reversed and/or
neutral conductor
N interrupted
Voltage at PE
> 100 V
Not possible
(no supply
power)
Line voltage
< 180 V / < 90 V
(depending on
mains)
U
L-N
< 180 V
U
L-N
< 90 V
Possible un-
der certain
circum-
stances
1
Test for IT/TN
system
Display
Connection
N
PE
> 20 k
Possible
under certain
circumstances