janitza UMG 509 User Manual

26
UMG 509
Supporting measurement, input V4
Fig. Measurement in a three-phase 4-conductor
network with symmetric loading.
Fig. Measurement in a three-phase 3-conductor
network with symmetric loading.
Fig. Measurement of the voltage between N and PE.
Measurement of the current in the neutral conductor.
m
If the baseline measurement (inputs V1-V3)
is connected to a three-phase 3-conductor
network, the supporting measurement
(input V4) can no longer be used as
a measurement input.
m
For measurement with the supporting
measurement (V4), a voltage must be
connected to the baseline measurement
for frequency determination.
L1
L2
L3
N
V4 N
4w 1m
I4
S1 S2
L1
L2
L3
V
4 N
3w 1m
I
4
S1 S2
N
PE
V
4 N
2w 1n
I
4
S1 S2
L1
L2
L3
N
V
4 N
4w 1m
I
4
S1 S2
L1
L2
L3
V4 N
3w 1m
I4
S1 S2
N
PE
V4 N
2w 1n
I
4
S1 S2
L1
L2
L3
N
V
4 N
4w 1m
I
4
S1 S2
L1
L2
L3
V
4 N
3w 1m
I
4
S1 S2
N
PE
V4 N
2w 1n
I4
S1 S2
m
Measured voltages and measured currents
must derive from the same network.

janitza UMG 509 Specifications

General

Brand	janitza
Model	UMG 509
Category	Measuring Instruments
Language	English