Instantaneous phase overcurrent protection 3-phase output
Local acceleration logic PLAL........................................................... 95
Local acceleration logic ZCLCPLAL.............................................95
Protection scheme PSCH..................................................................96
Scheme communication logic with delta based blocking
scheme signal transmit ZCPSCH (85)..........................................96
Current reversal and WEI logic for distance protection 3-
phase ZCRWPSCH (85)...............................................................98
Scheme communication logic for residual overcurrent
protection ECPSCH (85).............................................................. 99
Current reversal and weak-end infeed logic for residual
overcurrent protection ECRWPSCH (85)................................... 101
Sensitive directional ground fault PSDE..........................................102
Sensitive directional residual overcurrent and power
protection SDEPSDE (67N)........................................................102
Switch onto fault logic PSOF........................................................... 104
Automatic switch onto fault logic, voltage and current based
ZCVPSOF ..................................................................................104
Time over current PTOC..................................................................105
Four step residual overcurrent protection, zero, negative
sequence direction EF4PTOC (51N/67N).................................. 105
Four step phase overcurrent protection 3-phase output
OC4PTOC (51/67)......................................................................109
Four step phase overcurrent protection, phase segregated
output OC4SPTOC.....................................................................113
Stub protection STBPTOC (50STB)...........................................116
Broken conductor check BRCPTOC (46)...................................117
Negative sequence based overcurrent function DNSPTOC (46)118
Negative-sequence time overcurrent protection for machines
NS2PTOC (46I2)........................................................................ 120
Overfrequency PTOF.......................................................................122
Overfrequency protection SAPTOF (81).................................... 122
Overvoltage PTOV.......................................................................... 123
Two step overvoltage protection OV2PTOV (59)....................... 123
Two step residual overvoltage protection ROV2PTOV (59N).... 126
Protection trip conditioning PTRC................................................... 128
Tripping logic common 3-phase output SMPPTRC (94)............ 128
Thermal overload PTTR.................................................................. 129
Table of contents
650 series ANSI
3
Communication protocol manual
Содержание Relion 650 series ANSI
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