ABB REL650 Applications Manual page 197

1MRK 506 334-UUS A
Application manual
The parameters for four step phase overcurrent protection phase segregated output
OC4SPTOC (51_67) are set via the local HMI or Protection and Control IED Manager
(PCM600).
The following settings can be made for the four step phase overcurrent protection phase
segregated output.
Common base IED values for primary current (setting IBase), primary voltage (VBase)
and primary power (SBase) are set in a Global base values for settings function
GBASVAL.
Setting GlobalBaseSel: Used to select a GBASVAL function for reference of base values.
MeasType: Selection of discrete Fourier filtered (DFT) or true RMS filtered (RMS)
signals. RMS is used when the harmonic contents are to be considered, for example in
applications with shunt capacitors.
Operation: The protection can be set to Disabled or Enabled
HarmRestrain: Disabled or Enabled, enables blocking from harmonic restrain.
Section 7
Current protection
191