UMG 96-PA
/ UMG 96-PA
MID
www.janitza.com
48
13.9 Delete min./max. Values individually
In the measured value displays for voltage,
current and power with
·Voltage L-N and voltage L-L
·Current and THD-I
·Total power and
·Active, reactive and apparent power
each of the min./max. Values can be deleted with
key 6 (Enter).
Fig.
Measured value dFsplay “Voltaie L-N”
wFth menu “Delete/Cancel”
·If you are
not
in the measured value display
“
OvervFew
”, switch to this view by pressing key
1 (Esc) several times.
·Press key 1 (Esc) to open the main menu.
·With keys 3 (
) and 4 (
) select the menu item
“
Voltaie”
or “
Current”
or “
Power”
and confirm
with key 6 (Enter).
·Using keys 3 (
) and 4 (
) select a measured
value display (see above) and confirm with key
6 (Enter).
·Delete the corresponding min./max. Values in
the measured value display with key 6 (Enter).
·To do so, confirm the “
Delete/Cancel
” note by
pressing key 6 (Enter). With the “Cancel” option
(selection with key 3 or 4) and by confirming
with key 6 (Enter), you cancel the action.
13.10 Harmonics
Harmonics are caused, for example, by operating
resources with a non-linear characteristic curve.
The additional frequencies represent the integer
multiple of a fundamental oscillation and show
how the operating resources affect the power
grid. Potential effects of harmonics are, for
example:
·Operating resources heat up even more
·Additional current on the neutral conductor
·An overload and a reduced service life of
electric consumers
HarmonFc loads are the maFn cause for FnvFsFble
voltaie qualFty problems whFch Fnvolve huie
costs for repaFrs and requFre an addFtFonal
Fnvestment to replace defectFve devFcesg.
The device measures harmonics of the voltage
in the range of 45 to 65 Hz. The calculated
harmonics of the voltages and currents relate to
this power frequency.
The device calculates harmonics up to 25x the
fundamental oscillation.
·If you are
not
in the measured value display
“
OvervFew
”, switch to this view by pressing key
1 (Esc) several times.
·Press key 1 (Esc) to open the main menu.
·With keys 3 (
) and 4 (
) select the menu item
“
HarmonFcs
” and confirm with key 6 (Enter).
·With keys 3 (
) and 4 (
) select the harmonics
for the relevant voltage and/or current and
confirm with key 6 (Enter).
Fig.
Measured value dFsplay “HarmonFcs”
