janitza UMG 509 User Manual

30
UMG 509
Total current measurement
If the current measurement is done via two current
transformers, the overall transformation ratio
of the current transformers must be programmed into
the UMG 509.
Fig. Example, current measurement via a total
current transformer
UMG
S2
I
S
1
P1
P2
Einspeisung 1
Supply 1
Einspeisung 2
Supply 2
1P1
1P2
(K)
(L)
(k)
(l)
1S
2
1S1
1S1 1S2 2S1 2S2
2S1
2S2
(k)
(l)
(K)
(L)
2P
1
2P2
Verbraucher A
Consumer A
Verbraucher B
Consumer B
Example:
The current is measured via two current transformers.
Both current transformers have a transformation ratio
of 1000/5A. The summation measurement is performed
using a total current transformer 5+5/5A.
The UMG 509 must then be setup as follows:
Primary current: 1000A + 1000A = 2000A
Secondary current: 5A

janitza UMG 509 Specifications

General

Brand	janitza
Model	UMG 509
Category	Measuring Instruments
Language	English