janitza UMG 801, Руководство пользователя

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7.5.2 Summation current measurement
For a summation current measurement via two
current transformers, first set their total ratio on
the device (for setting the current transformer
ratios, see section „11.4 Configuring current
transformers“ on page 63).
Example:
The current is measured via two current
transformers. Both current transformers have a
ratio of 1000/5 A. The summation measurement is
carried out with a summation current transformer
of 5+5/5 A.
Set the device as follows:
Primary current: 1000 A + 1000 A =
2000 A
Secondary current:
5A
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
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 current measurement via a summation current
transformer.
Fig. Example circuit diagram with ammeter in series connection
UMG
S
2
I
S
1
Einspeisung
Supply Verbraucher
Consumer
A
(k)S
1
S
2
(l)
P
2
(L) (K)P
1