UMG 96-S2
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7.5.2 Summation current measurement
For a summation current measurement via two
current transformers, first set their total trans-
formation ratio on the device (setting the current
transformer ratios, see starting from chap. 12.4
on page 36).
Example:
The current measurement occurs via two current
transformers. Both current transformers have a
transformation ratio of 1000/5 A. The summation
measurement is performed with a summation
current transformer 5+5/5 A.
Set the device as follows:
Primary current:
1000 A + 1000 A =
2000 A
Secondary current:
5A
UMG
S
2
I
S
1
P
1
P
2
Einspeisung 1
Supply 1
Einspeisung 2
Supply 2
1P
1
1P
2
(K)
(L)
(k)
(l)
1S
2
1S
1
1S
1
1S
2
2S
1
2S
2
2S
1
2S
2
(k)
(l)
(K)
(L)
2P
1
2P
2
Verbraucher A
Consumer A
Verbraucher B
Consumer B
Fig. Example for the current measurement via a summation
current transformer
7.5.3 Ammeter
For a current measurement with an additional
ammeter, connect the ammeter in series to the
UMG:
UMG
S
2
I
S
1
Einspeisung
Supply
Verbraucher
Consumer
A
(k)S
1
S
2
(l)
P
2
(L)
(K)P
1
Fig. Circuit diagram with ammeter in series connection
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