Hitachi Relion 670 Series Applications Manual page 300
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- Applications manual (354 pages) ,
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Section 14
Logic
GUID-3973D633-4E87-45FC-978A-405BFE31691F V1 EN-US
Figure 147:
The reported outputs (FLTILxMAG/FLTILxANG, FLTULxMAG/FLTULxANG, FLTINMAG/FLTINANG,
and FLTUNMAG/FLTUNANG) show the previous event values until a new positive edge trigger is
received by TRINx input.
14.1.3.4
Blocking of the function block
Total block of the trip function is done by activating the input BLOCK and can be used to disable the
outputs of the trip logic in the event of internal failures.
14.1.4
Setting guidelines
The parameters for tripping logic SMPPTRC are set via the local HMI or PCM600.
The following trip parameters can be set to regulate tripping.
Operation: Sets the mode of operation. Off switches the tripping off. The normal selection is On.
294
Reporting of fault current
If the signal RESET is HIGH, SMPPTRC will set all the reported current magnitudes to
-1.000A, voltage magnitudes to -0.001kV, current and voltage angles to -1.000deg values
respectively.
If the group connections of current and voltage are not connected to SMAI or the signal
quality is bad, the SMPPTRC function will set all the reported current magnitudes to
-2.000A, voltage magnitudes to -0.002kV, current and voltage angles to -2.000deg values
respectively, indicating Invalid data.
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