Gossen MetraWatt SECULIFE ST PRO, Руководство пользователя, Страница: 72 / 114

72 GMC-I Messtechnik GmbH
Measurements with Current Clamp Sensor (feature F01)
Current clamp measurement is possible in this case independent
of measuring functions R
PE
, I
PE
and I
E
, e.g. for measuring current
at permanently installed devices.
Schematic Diagram – Mains to Test Socket
The current of a consuming device connected to the extra-low
voltage output can be measured with the current clamp sensor.
Wiring Diagram – Mains to Test Socket
Schematic Diagram – Permanent Connection
The current of a permanently connected consuming device can
be measured with the current clamp sensor.
Wiring Diagram – Permanent Connection
Setting Measuring Parameters for a Current Clamp Sensor
EXTRA
Measuring
Parameter Meaning
Measurement Type Suitable for
DUT Connection via
V – COM Display: A AC Permanent connection
V – COM
(with mains) Display: A AC: with mains to test
socket, e.g. for measuring protec-
tive extra-low voltage at power
packs Test socket
Polarity – only for PE-P1 (with mains)
L/N or N/L Selection of polarity for mains voltage to the test socket
Clamp factor
At tester Clamp transformation ratio Suitable clamps
1 V : 1000 A
(1 : 1000) 1 mV / 1 A WZ12C, Z3512A,
METRAFLEX 3000
1 V : 100 A
(1 : 100) 10 mV / 1 A WZ11B, Z3512A,
METRAFLEX 3000/300M
1 V : 10 A
(1 : 10) 100 mV / 1 A WZ12B, WZ11B, Z3512A,
METRAFLEX 3000/300M
1 mV : 1 mA
(1 : 1) 1000 mV / 1 A WZ12C, Z3512A,
METRAFLEX 300M
10 mV : 1 mA
(10 : 1)
100 mV : 1 mA
(100 : 1) 100 mV : 1 mA SECUTEST CLIP
1 V : 1 mA
(1000 : 1)