GOSSEN METRAWATT GMBH
15
7.1
Current Measurement with Current Transformers with Voltage Output
If a current sensor is connected to the multimeter, all current values are displayed
correctly in consideration of the transformer ratio. This presupposes that the cur-
rent transformer is equipped with the required sensitivity, and that the
appropriate ratio is selected before measurement is performed.
➭
Turn the rotary switch to the
position
.
➭
Select a current type, ~ (AC) or (DC), by pressing the
FUNC
key.
➭
Simultaneously press the
FUNC
and the
MAN/AUTO
keys. The currently
selected transformation ratio is displayed. The transformer ratio can be
changed by pressing the
MAN
or the
DATA
key, or the currently selected value
can be retained by pressing the
FUNC
key.
➭
Connect the (clip-on) current transformer or the clip-on current sensor to the
and the
⊥
jacks.
Attention!
!
If the secondary side of the current transformer with voltage output
remains open during operation, e.g. if cables are defective or have not
been connected, or due to a blown device fuse or incorrect
connection, dangerous voltages may occur at the terminals.
Maximum allowable operating voltage is equal to the nominal voltage of the
current transformer. Additional error caused by the clip-on ammeter must be
taken into consideration.
transformer ratio
max. measuring range
switch clip-on
current transf.
LCD
multimeter
A
A~
1 mV/ 1
mA
1:1
mA
1 mV/ 10 mA
1:10 mA
1 mV/ 100 mA (Z13B)
60 A
40 A
10 mV/A
1:100 mA
1 mV/
1
A (Z13B)
600 A
400 A
1 mV/A
1:1
A
V
/~
M
I(A)
Z13B
