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UMG 96-PA / UMG 96-PA-MID / UMG 96-PA-MID+
ment.
Further information can be found in section
„12.4.1 Nominal frequency“ on page 39.
13.5 Direction of rotary field
Check the direction of the voltage rotating field in
the measuring display of the device.
13.4 Frequency
For the measurement and calculation of measured
values, the device requires the nominal or mains
frequency. The mains frequency can either be
specified by the user or determined automatically
by the device.
NOTE
The UMG 96-PA
MID
supports automatic frequency
determination only (45-65 Hz)!
·To determine the mains frequency, a voltage
greater than 20 V
eff
(4-conductor measurement)
or a voltage L1-L2 greater than 34 V
eff
(3-con-
ductor measurement) must be applied to voltage
measuring input V1.
·The mains frequency must be in the range from
45 Hz to 65 Hz.
·If the measured voltage is not sufficiently high,
the device cannot determine the mains frequen-
cy and therefore cannot carry out a measure-
·Usually it is a "right" rotating field.
To check the voltage rotating field, open the menu
display “
Phasor diagram
”:
·If you are
not
in the measuring display
Home
,
you can go to this view by pressing button 2
(
Home
).
UL1-UL2-UL3 = right rotating field
UL1-UL3-UL2 = left rotating field
Fig.
Phasor diagram window showing the phase
sequence according to the direction of the
rotary field
·Open the menu with button 1 (
Menu
).
·Use buttons 3 (
) and 4 (
) to select the item
Voltage
and confirm with button 6 (
Enter
).
·The submenu with the item
Phasor diagram
appears.
·Use buttons 3 (
) and 4 (
) to select the item
Phasor diagram
and confirm with button 6
(
Enter
).
·The
Phasor diagram
window appears.
Fig.
Voltage menu item
Fig.
Submenu item Phasor diagram
