User Manual

GMC-I Messtechnik GmbH 9
4 Initial Start-Up
4.1 Connecting the Test Instrument to the Mains
➭ See section 12 for nominal mains values (nominal ranges of
use).
➭ Connect the test instrument to the mains cable via its inlet
plug and insert the mains plug into an electrical outlet. The
function selector switch can be set to any position. 
If a mains outlet (earthing contact ou
tlet) is not 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 included with the KS13
cable set.
Attention!
!
If connection is not possible via an earthing contact out-
let: Shut down mains power first. 
Then connect the cables from the coupling socket to the
mains using pick-off clips in accordance with the dia-
gram. Disconnection from mains
power is only possible
with the mains plug.
L1
N
Green-yellow
Green-yellow
PE
L1
L2
L3
N
PE
L1
L2
L3
N
Green-yellow
KS13
Figure 1 Connecting the Test Instrument to the Mains
4.1.1 Measurements in IT Systems (new parameter as of firmware 1.5.0)
The IT system
setting can be
activated for all
single measure-
ments and test sequences in the SETUP switch position
(Setup 1/
3) in the All measurements submenu (in this case the
symbol
appears in the header of each display page):
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.
If, when being connected to line voltage, the SECUTEST detects
a cha
nge at PE as compared with the previously used mains con-
nection, the inspector is asked directly after initial start-up if the
currently used outlet belongs to an IT system. The IT system
option in SETUP is activated based on the user’s answer. If “Mea-
surement at IT system” is activat
ed, this is indicated by the
symbol in the header. Regardless of this, it’s always
possible to
accordingly change the option manually in SETUP.
The setting for the “Measurement at IT system” option is retained
even aft
er disconnection from the mains.
Reliable measured values cannot be obtained from active leakage
curr
ent measurements (or from any measurements with reference
to PE at the mains connection side) in IT systems, for which rea-
sons all single measurements of th
is sort, as well as test
sequences which include this type of measurement, are disabled
when the “Measurement at IT system” option has been activated
in SETUP.
Parameter Meas. at IT-mains can be set in the Setup menu: 
Setup 1/3 > All measurements > Me
as. at IT-mains
When selecting
between two
states: direct
changing, without
submenu.
Symbol toggle