SECU
TEST ST
B
ASE
(
10
) /
P
RO
and SECU
LIFE ST
BASE
(25)
42
Gossen Metrawatt GmbH
13.18 Measurement with Current Clamp Sensor
for Permanently Installed PC I DUTs
Only for instruments with feature I01 (e.g. SECUT-
EST ST PRO and SECULIFE ST BASE(25))
* Only with WZ12C
Connection Example: RPE Measurement
(WZ12C only)
Measurement of test current by closing the
clamp around
PE
at the mains. This mea-
surement type can only be selected if test
current is set to 10 A AC.
Connection Example: IPE Measurement (direct)
Measurement of protective conductor cur-
rent by closing the clamp around
PE
in the
mains cable.
Connection Example: IE Measurement
(differential)
Measurement of device leakage current by
closing the clamp around the
L and N
con-
ductors in the mains cable.
Tester
Clamp
Tester
Parameter:
transforma-
tion ratio
transforma-
tion ratio
(switch*)
Measuring
range
Display range
With clamp
1 mV : 1 mA
WZ12C
1 mV : 1 mA
1 mA ...
15 A
0 mA ... 300 A
V
COM
P1
Switch position:
RPE
Meas. type:
Clamp
V
COM
Switch position:
IPE
Meas. type:
Clamp
V
COM
Switch position:
IE
Meas. type:
Clamp