27
= Key1
= Key 2
= Key 3
= Max. value or consumption = Min. value or supply
Chose select mode
using key 1.
The symbol
SELECT
flashes.
Confirm with
key 2.
The symbol
SELECT
is on.
Press
key 2 twice.
The running time for
real energy T00 is
indicated.
Days=02, Hours=04
Minutes=15, Sec.=41
Show running time
Each energy meter, besides of the 6 non
controllable energy meters TX0, can be controlled
via the digital inputs and internal swiching clock. For
each energy meter, the duration of energy
measurement with the corresponding running time
is saved.
Example: Running time for real energy T00:
The running time for real energy can be called up in
the measured value indication. From each program
part, you reach the first measured value indication
by pressing key 1 for about two seconds.
M Wh
kWh
Wh
L1
L2
L3
T
SELECT
M Wh
kWh
Wh
L1
L2
L3
T
Pressing
key 3 you
scroll to the
measured value
indication of energy
T00.
SELECT
Y.M
D.H
M.S
Harmonics
Harmonic waves are the integer multiple of the fun-
damental. The UMG505 measures the fundamental
of voltage in the range of 45 up to 65Hz. The
calculated harmonic current and voltage are related
to this fundamental. For strongly distorted voltage,
the fundamental cannot be detected with sufficient
accuracy. In order to calculate the harmonics
nevertheless, a fix fundamental can be assumed
with either 50Hz or 60Hz. Please see chapter
„Scanning frequency“.
The UMG505 calculates harmonics up to the 20th.
Total harmonic distortion THD(f)
The calculated total harmonic content THD(f)
represent the effective ratio of harmonics to the fun-
damental. The total harmonic distortion is given in
%.
Press
key 1 for about 2 seconds and you return to
the first measured value window of the measured
value indication from each program part.
I
2
1
2
THD
I I
I
=
-
x
100%
U
2
1
2
THD
U U
U
=
-
x
100%
Partial harmonic content
In the further description, the single harmonics are
called partial harmonics.
The partial harmonics for current are given in Am-
pere, the partial harmonics for voltage are given in
Volt.
