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Gossen Metrawatt PROFITEST MBASE plus Manual

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50 GMC-I Messtechnik GmbH
13 Measurement with Accessory Sensors
13.1 Current Measurement with Current Clamp Sensor
Bias, leakage and circulating current to 1 A, as well as leakage
current to 1000 A can be measured with the help of special cur-
rent clamp sensors, which are connected to sockets 15 and 16.
Attention!
!
Danger: High-Voltage!
Use only current clamp sensors which are specifically of-
fered as accessories by GMC-I Messtechnik GmbH.
Other current clamp sensors might not be terminated
with an output load at the secondary side. Dangerously
high voltage may endanger the user and the device in
such cases.
Attention!
!
Maximum input voltage at the test instrument!
Do not measure any currents which are greater than
specified for the measuring range of the respective
clamp.
Input voltage for clamp connector sockets 15 and 16 at
the test instrument may not exceed 1 V!
Attention!
!
Be sure to read and adhere to the operating instructions for
current clamp sensors and the safety precautions in-
cluded therein, especially those regarding the approved
measuring category.
Select Measuring Function
Selecting a Measuring Range at the Current Clamp Sensor
Set Parameters
The transformation ratio parameter must be correspondingly set
at the test instrument depending upon the respectively selected
measuring range at the current clamp sensor.
Specifying limit values results in automatic evaluation at the end of
the measurement.
Connection
Start Measurement
Tester Clamp Tester
Transforma-
tion Ratio
Parameter
Switch
WZ12C
Switch
Z3512A
Measuring
Range
WZ12C
Measuring
Range
Z3512A
Measuring
Range
1:1
1 V / A
1 mV / mA
x 1000 [mV/
A]
1 mA ... 15 A 0 ... 1 A 5 ... 999 mA
1:10
100 mV / A
— x 100 [mV/A] — 0 ... 10 A 0.05 ... 10 A
1:100
10 mV / A
— x 10 [mV/A] — 0 ... 100 A 0.5 ... 100 A
1:1000
1 mV / A
1 mV / A x 1 [mV/A] 1 A ... 150 A 0 ... 1000 A
5 ... 150 A/
999 A
Tester Clamp Tester
Transforma-
tion Ratio
Parameter
Switch
METRAFLEX P300
Measuring Range
METRAFLEX P300
Measuring
Range
1:1
1 V / A
3 A (1 V/A) 3 A 5 ... 999 mA
1:10
100 mV / A
30 A (100 mV/A) 30 A 0.05 ... 10 A
1:100
10 mV / A
300 A (10 mV/A) 300 A 0.5 ... 100 A
SENSOR
Output range,
clamp
Limit value:
I < and I > limit value
U
L
R
L
“I” with METRAFLEXP300
… 50 …

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