Gossen MetraWatt SECULIFE ST BASE 25, Operating Instructions Manual

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66 Gossen Metrawatt GmbH
15.8.5 Patient Leakage Current – IP
Definition
Patient leakage current is the current which flows to ground or PE
from the patient ports at the running DUT via the patient.
The current’s AC and DC components are measured.
Direct Measuring Method
–
Measurement type: direct P1
– DUT mains plug (PC1) connected to test socket
– Probe to P1 terminal
Schematic Diagram
Patient leakage current is measured at the DUT between PE (DUT
mains plug) and the short-circuited applied parts.
Wiring Diagram
Direct Measuring Method
–
Measurement type: permanent connection P1
– Permanent connection
– Probe to P1 terminal
Schematic Diagram
Patient leakage current is measured between the patient termi-
nals and PE at the mains connection.
Wiring Diagram
Setting Measuring Parameters for IP
1
Only suitable for connecting the DUT to the test socket. Not suitable for
measurements with AT16DI or AT32DI adapter.
Single Measurements, Rotary Switch Level: Green
Ro
ta
ry
Swi
tc
h
Po
si
ti
o
n
Meas. Type
With Mains to
Test Socket Meas. Type
Without
Mains to Test
Socket Measuring Functions
I
P
Direct P1 I
P
Patient leakage current, RMS
I
P~
AC component
I
P=
DC component
U
LN
Test voltage
Perm. conn. P1
I
P
Measuring
Parameter Meaning
Meas. Type Suitable for
DUT Connection via
Direct P1 Direct measuring method (via
test socket) with test probe P1 Test socket
Perm. conn. P1 Permanently installed DUT Permanent connection
Single fault (SFC) – only with measurement type direct P1
Normal status Single fault simulation not active
N interrupted Fault simulation active – only phase and protective conductor are
connected to the DUT
1
PE interrupted Fault simulation active – the protective conductor is disconnected
from the DUT for the duration of the measurement.
U low to APP Fault simulation active – low voltage to applied part
Polarity – only with measurement type direct P1
Normal Selection of polarity for mains voltage to the test socket
Reversed