27
UMG 508
Illu. Example, current measurement with an ad-
ditional ampere meter.
Ampere meter
If you do not want to measure the current with
the UMG508 alone, but also with an additional
ampere meter, the ampere meter must be swit-
ched in series to the UMG508.
Illu. Example, direct current measurement.
Direct measurement
Nominal currents up to 5A can also be directly
measured with the UMG508.
Under consideration that the direct measure-
ment will be carried out for the current only in
three phase 4 wire systems with mains volt-
age till
•
127V/220V (300V CAT III) according UL
and three phase 3 wire systems with mains
voltage till
•
277V (300V CAT III) according UL
Due to the fact that the UMG508 does not
have integrated protection for the current
measurement, this protection must be fore-
seen in the installation.
UMG
S
2
I
S
1
Einspeisung
Supply
Verbraucher
Consumer
A
(k)S
1
S
2
(l)
P
2
(L)
(K)P
1
UMG
S
2
I
S
1
Einspeisung
Supply
Verbraucher
Consumer
5A Typ C
