Load Encroachment Lepdis - ABB REG650 Commissioning Manual

Section 6
Testing functionality
6.4.5
58
2
1
0
1
0
-1
2
1
0
2
1
0
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-1
0 0.5
IEC10000142 V1 EN
Figure 14: Boolean output signals for the injected current with two
components: a 50 Hz current component and a component with
49 Hz

Load encroachment LEPDIS

Prepare the IED for verification of settings as outlined in
verify settings".
Values of the logical signals for LEPDIS are available on the local HMI under Main
menu/Tests/Function status/Impedance/LEPDIS/LEPDIS:1. The Signal
Monitoring in PCM600 shows the same signals that are available on the local HMI.
Load encroachment operates on the same measuring principles as the impedance
measuring zones. Thus, it is necessary to follow the same principles as for distance
protection when performing the secondary injection tests.
Measure operating characteristics during constant current conditions. Keep the
measured current as close as possible to the rated value of its associated input
transformer or lower. Ensure, however, that it is higher than 30% of the rated current.
COMMON TRIP COMMAND (trip)
TRIPZ1 (tripZone1)
TRIPZ2 (tripZone2)
START (start)
GENMODE (generatorMode)
MOTMODE (motorMode)
1 1.5 2 2.5
time in seconds
1MRK 502 049-UEN A
3 3.5 4 4.5
→
IEC10000142-1-en.vsd
5.1 "Preparing the IED to
Commissioning manual
5