Name Values (Range) Unit Step Default Description
tGF 0.000 - 60.000 s 0.001 3.000 Timer for overcoming single-pole reclosing
dead time
IMinPUPG 5 - 30 %IB 1 10 Minimum operate current in % of IBase
IBase 1 - 99999 A 1 3000 Base setting for current level settings
Table 79: ZMRPSB (68) Group settings (advanced)
Name Values (Range) Unit Step Default Description
tP1 0.000 - 60.000 s 0.001 0.045 Timer for detection of initial power swing
tP2 0.000 - 60.000 s 0.001 0.015 Timer for detection of subsequent power
swings
tW 0.000 - 60.000 s 0.001 0.250 Waiting timer for activation of tP2 timer
tH 0.000 - 60.000 s 0.001 0.500 Timer for holding power swing PICKUP output
tR1 0.000 - 60.000 s 0.001 0.300 Timer giving delay to inhibit by the residual
current
tR2 0.000 - 60.000 s 0.001 2.000 Timer giving delay to inhibit at very slow swing
3.6.12 Power swing logic ZMRPSL
Function description
IEC 61850
identification
IEC 60617
identification
ANSI/IEEE C37.2
device number
Power swing logic ZMRPSL - -
3.6.12.1 Application
Power Swing Logic (ZMRPSL) is a complementary function to Power Swing
Detection (ZMRPSB, 68) function. It enables a reliable fault clearing for different
faults on protected lines during power swings in power systems.
It is a general goal, to secure fast and selective operation of the distance protection
scheme for the faults, which occur on power lines during power swings. It is possible
to distinguish between the following main cases:
• A fault occurs on a so far healthy power line, over which the power swing has
been detected and the fast distance protection zone has been blocked by ZMRPSB
(68) element.
• The power swing occurs over two phases of a protected line during the dead time
of a singlepole auto-reclosing after the Ph-E fault has been correctly cleared by the
Section 3 1MRK504116-UUS C
IED application
366
Application manual
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