IMPORTANT
This probe concept increases the input voltage levels while maintaining
the protection of the GN610B/GN611B/GN610/GN611 acquisition cards.
Care must be taken that the full isolated measurement is lost as the probe
is attached to earth. It's recommended to use high impedance series
resistors to keep both the current load on the device under test low as
well as any potential ground loop currents low.
12.2.9
Measuring currents
The GN610B/GN611B/GN610/GN611 acquisition cards do not support direct
current measurements. The use of current shunts, current clamps and/or
current transducers is required to measure currents.
A typical setup could look like this:
tA
7
PTP2
PTP1
CAL
M/S
I/O
Power
HDD
M/S
0
2M
Ω 1kV DC
CA
T II 600V
1
2M
Ω 1kV DC
CA
T II 600V
2
2M
Ω 1kV DC
CA
T II 600V
3
2M
Ω 1kV DC
CA
T II 600V
4
2M
Ω 1kV DC
CA
T II 600V
5
2M
Ω 1kV DC
CA
T II 600V
6
2M
Ω 1kV DC
CA
T II 600V
1
2M
Ω 1kV DC
CA
T II 600V
2
2M
Ω 1kV DC
CA
T II 600V
3
2M
Ω 1kV DC
CA
T II 600V
4
2M
Ω 1kV DC
CA
T II 600V
5
2M
Ω 1kV DC
CA
T II 600V
6
tA
7
PTP2
PTP1
CAL
M/S
I/O
Power
HDD
M/S
2M
Ω 1kV DC
CA
T II 600V
4
2M
Ω 1kV DC
CA
T II 600V
5
2M
Ω 1kV DC
CA
T II 600V
6
2M
Ω 1kV DC
CA
T II 600V
4
2M
Ω 1kV DC
CA
T II 600V
5
2M
Ω 1kV DC
CA
T II 600V
6
Channel 6
Channel 5
Channel 4
Channel 3
Channel 2
Channel 1
POWER
I OUT
TRANSDUCER
TRANSDUCER
TRANSDUCER
TRANSDUCER
TRANSDUCER
TRANSDUCER
I OUT
I OUT
I OUT
I OUT
I OUT
SIGNALTEC
DC AC Power
Converter
I1
I2
I3
Current
Transducer
mA Signals, use
KABXXX Cables
KAB290 Cable
KAB290 Cable
KABXXX
CT Cable
KABXXX
CT Cable
mA Signals, use
KAB290 Cables
Burden Resistor HBR x
Burden
Resistor
HBR x
Cable Connector for
Current Transducer
GEN7tA
Electric
Motor
Current Transducer
Power Supply
Current Transducer
Power Supply
Connect
Yellow
to GEN7tA
Protective
Ground
GN610B/GN611B
Figure 12.12:
Current transducer connection diagram
GEN3i
224
I3763-3.1 en HBM: public
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