UMG 96-PA / UMG 96-PA-MID / UMG 96-PA-MID+
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54
13.8 Control of the power measurement
Short-circuit all current transformer outputs ex-
cept one and check the indicated powers.
·The device must only display power in the phase
with the current transformer input that is not
short-circuited.
·If this is not the case, check the connection of
the measured voltage and measured current.
If the amount of active power is correct, but the
sign of the active power is negative, this can have
two causes:
1. The connections S1(k) and S2(l) on the current
transformer are reversed.
2. Active energy is returned to the grid.
13.9 Control of the communication
The device counts all received (RX), all sent (TX)
and all faulty data packets.
Ideally, the number of errors in the Error column
will be "0" (see figure below, window
Overview of
COM ports)
.
·If you are
not
in the measuring display
Home
,
you can go to this view by pressing button 2
(
Home
).
·Open the menu with button 1 (
Menu
).
·Use buttons 3 (
) and 4 (
) to select the item
Peripherals from the menu and confirm with
button 6 (
Enter
).
·The submenu with the item
Overview of COM
ports
appears.
Fig.
Submenu item Overview of COM ports
Fig.
The phasor diagram shows voltages with long
phasors and currents with short phasors.
Call up the phasor diagram with details on the
power:
·If you are
not
in the measuring display
Home
,
you can go to this view by pressing button 2
(
Home
).
·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 (
En-
ter
).
·The
Phasor diagram
window appears.
·Use buttons 3 (
) and 4 (
) to select the item
Overview of COM ports
and confirm with button
6 (
Enter
).
·The Overview of COM Ports window appears.
Fig.
Overview of COM Ports window with view of
the communication parameters (Com. view)
·To return to the measuring display
Home
, press
button 2 (
Home
).
