User Manual
22 GMC-I Messtechnik GmbH
6 Connecting the Device Under Test
➭ Connect the DUT in accordance with the schematic diagrams
included in the online help function.
Connection of the DUT to the test instrument depends upon:
• the type of
DUT:
For direct connection to the test socket (TS)
Devices with single-phase connection,
as well as extension cords via the EL1 adapt
er
(in which case the EL1 is connected to probe sockets P1)
For permanent connection (to the mains)
By contacting the housing with the probe
(for the measurement of protective conduct
or resistance
or with the direct measuring meth
od for the touch current
measurement)
Measurement of protective conductor current
via a current clamp
(only possible with feature I01).
For connection via adapter
– With single-phase extension cords via the EL1 adapter
(in which case the EL1 is connected to probe sockets P1)
– With single and 3-ph
ase extension cords
via the
VL2E adapter
to the test socket
– Devices with 5-pole, 16 A CEE plug
via the A
T16-DI differential current adapter to the test socket
– Devices with 5-pole, 32 A CEE plug
via the A
T32-DI differential current adapter to the test socket
• DU
T protection class (PC I, PC II or PC III) or any combinations
of protection classes
Note
The DUT must be switched on for all tests. Switches,
relays, temperature regulators etc. must all be taken into
consideration.
As a default setting, the program sequence assumes that the plug
from the DUT has been connected to the test socket.
6.1 Residual Current Monitoring
For your safety, the test instrument is equipped with continuous
residual current monitoring. If residual current exceeds a specified
limit value, all measuring processes are stopped, and if line volt-
age is fed through the test socket it’
s disconnected. This limit
value can be set to one of two levels in the SETUP switch position:
Setup 1/3 > All Measurements > Residual Current Protection >
10 mA
/30 mA
6.2 Specifying Reference Voltage L-PE and Test Sequence
Alternative
The reference (line) voltage is the voltage to which the measured
values for leakage current have been standardized.
It is used for the arithmetical adj
ustment of current measuring val-
ues of leakage current to
the specified voltage.
Measurements with line voltage at the test socket: Th
e setting value
has no influence on the voltage the DUT is supplied with via the
test socket of the SECUTEST.
Leakage current measurements with „Alternative“ method: Th
e set-
point value of the synthetic test vo
ltage is derived from the value
specified here.
Note
The displayed measured values of the leakage currents
are normalised to an adjustable reference value (typically
230 V) in order to provide for a reproducable measure-
ment of leakage currents even for fluctua
ting mains sup-
ply voltage.
Reference voltage can be adjusted in setup:
Setup 1/3 > All Measurements > R
ef. Voltage L-PE
Defining Test Frequency „Alternative“
Variable frequency setpoint value for synthetic test voltage for all
leakage current measurements of measurement type „Alterna-
tive“, affecting the following measurements and/or rotary selector
switch positions:
– individual measurements (green rotary switch level)
– measurments in test sequences predefined ex factory
– measurements in user-defined test sequences (only with
database e
xtension Z853R or feature KB01)
Parameter T
est freq. Alt. can be configured in the Setup:
Setup 1/3 > All measurements > T
est freq. Alt.
6.3 Manually Specifying the Connection Type for Single
Measurements
In the case of single measurements the test instrument is unable
to detect the respective connection type (e.g. test socket or perma-
nent connection (voltage m
easuring inputs)). The connection type
must be specified manually.
➭ Se
lect parameter settings.
➭ After selecting the measurement type parameter, a list of possi-
ble connection types is
displayed.
➭ Se
lect a connection type.
Once a connection type has been selected, it remains active for all
following tests until it’s changed once again.
6.4 Manually Selecting a Connection Type /
Protection Class for Automatic Test Sequences
If the test instrument is unable to detect the respective connection
type or protection class, the suggested connection type must be
examined and the connection type or protection class must be
specified manually if necessary.
➭ P
ress the Sel key shown at the right in order to display
the classific. parameters.
➭ After selecting the protection class or connection type pa-
rameter, a list of possible sett
ings is displayed.
➭ Se
lect the respective parameter.
➭ Ac
knowledge the Class. Param. (classification parameters)
once again.
The connection type
appears at the middle of the header.
The symbol for the respective prot
ection class appears to the
right of the connection type.
Once a connection type
or a protection class has been selected,
it
remains active for all following tests until it’s changed once again.