24
UMG 511
Auxiliary measurement, input 4
Fig. measurement using a three-phase 4 con-
ductor network with symmetrical load.
Fig. measurement in a three-phase 3 conduc-
tor network with symmetrical load.
Fig. measurement of the voltage between N
and PE. Measurement of the current in the
neutral wire.
For measurement with the auxil-
iary measurement (V4), a voltage
must be connected to the baseline
measurement for frequency deter-
mination.
m
In case of a three wire main measu-
rement (input V1-V3), the auxiliary
measurement (input V4) cannot be
used as measuring input.
m
L1
L2
L3
N
L
4
N
4w 1m
I
4
S1 S2
L1
L2
L3
L
4
N
3w 1m
I
4
S1 S2
N
L
4
N
2w 1n
I
4
S1 S2
PE
L1
L2
L3
N
L
4
N
4w 1m
I
4
S1 S2
L1
L2
L3
L
4
N
3w 1m
I
4
S1 S2
N
L
4
N
2w 1n
I
4
S1 S2
PE
L1
L2
L3
N
L
4
N
4w 1m
I
4
S1 S2
L1
L2
L3
L
4
N
3w 1m
I
4
S1 S2
N
L
4
N
2w 1n
I
4
S1 S2
PE
Содержание UMG 511
Страница 73: ...73 UMG 511 ...
Страница 98: ...98 UMG 511 Dimensional drawings Cut out size 138 0 8 x 138 0 8 mm Back Patch cable ...
Страница 99: ...99 UMG 511 Side view View from below ...