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Second harmonic blocking element.................................................202
Technical data................................................................................. 203
Four step residual overcurrent protection, zero, negative sequence
direction EF4PTOC (51N/67N).............................................................203
Identification ................................................................................... 203
Functionality.................................................................................... 204
Function block................................................................................. 204
Signals.............................................................................................205
Settings............................................................................................206
Monitored data.................................................................................209
Operation principle.......................................................................... 209
Operating quantity within the function........................................ 209
Internal polarizing....................................................................... 210
External polarizing for ground-fault function...............................213
Base quantities within the protection..........................................214
Internal ground-fault protection structure....................................214
Four residual overcurrent steps..................................................214
Directional supervision element with integrated directional
comparison function................................................................... 215
Second harmonic blocking element.................................................220
Technical data................................................................................. 221
Sensitive directional residual overcurrent and power protection
SDEPSDE (67N)...................................................................................222
Identification.................................................................................... 222
Functionality.................................................................................... 222
Function block................................................................................. 222
Signals.............................................................................................223
Settings............................................................................................223
Monitored data.................................................................................225
Operation principle ......................................................................... 225
Function inputs........................................................................... 225
Directional residual current protection measuring 3I
Directional residual power protection measuring 3I
Directional residual current protection measuring 3I
Technical data................................................................................. 233
Thermal overload protection, two time constants TRPTTR (49)...........234
Table of contents
6
Technical manual
Содержание 650 series
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