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UMG 96-PA
49
13. 6
Measurement range violation
The device display shows the warning "
Mea-
surement range violation
" in the event of a
measurement range violation and indicates
the current/voltage path.
Measurement range violations are displayed
for as long as they continue and cannot be
acknowledged. There is a measurement
range violation if at least one of the voltage or
current measurement inputs is outside of its
specified measurement range.
Thresholds for measurement range violation
(200 ms effective values):
I
=
6 A
rms
UL-N
=
600 V
rms
Fig. Warning with measurement range
violations in the current and voltage
paths I1-I3 and U1-U3
13. 7
Checking the power measurement
Short-circuit all current transformer outputs
except one and check the displayed power
outputs.
• The device may only display one power
output in the phase with the current con-
verter input that is not short-circuited.
• If this does not apply, check the con-
nection of the measurement voltage and
measurement current.
If the amount of effective power is correct but
the sign of effective power is negative, this
may have two causes:
1. The connections S1(k) and S2(l) are
switched on the current transformer.
2. Effective power is returned to the network.
Fig. The pointer diagram displays
voltages with long pointers and currents
with shorter pointers
Open the pointer diagram with information on
the power:
• If you are
not
in the measurement value
display "
Overvie
w," switch to this view by
repeatedly pressing key 1 (Esc).
• Open the main menu with key 1 (Esc).
• With keys 3 (
) and 4 (
), select "
Pointer
diagram
" and confirm your selection with
key 6 (Enter).
Summary of Contents for UMG 96-PA
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