1MRK 511 407-UUS Rev. J
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EQUATION1722 V1 EN-US
Further description can be found in the technical reference manual.
tPRCrvx, tTRCrvx, tCRCrvx : Parameters for user programmable of inverse reset time characteristic
curve. Further description can be found in the technical reference manual.
8.2.3.6
Phase selection element
The phase selection feature is controlled by the setting
PHSELL1, PHSELL2, and PHSELL3 from EF4PTOC shall be connected to phase selection inputs
PS1L, PSL2, and PSL3 of the trip logic SMPPTRC, as shown in
IEC050004933 V1 EN-US
Figure 61: Connection of phase selection outputs PHSELL1, PHSELL2, and PHSELL3
The EF4PTOC function includes four steps with different set values. The input 1PTREF of SMPPTRC
shall be connected to the trip output of the stage(s) from EF4PTOC that are intended for phase
selective tripping.
8.3
Four step directional negative phase sequence
overcurrent protection NS4PTOC (46I2)
Phasor measurement unit RES670
Application manual
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© Copyright 2017 Hitachi Power Grids. All rights reserved
GUID-8C11DEA0-5786-4839-9EAF-2DFDB9ECE216 v1
EnPhaseSel . The phase selection output
Figure
61.
GUID-E8CF8AA2-AF54-4FD1-A379-3E55DCA2FA3A v1
Section 8
Current protection
(Equation 41)
133