A-14 Firmware and Manual Versions Date Code 20080110
SEL-387E Instruction Manual
Revision
Date
Summary of Revisions
This manual differs from the previous versions as follows:
20000414 Section 2
− Clarified PT connections in Figure 2.16: Example AC Connections (three-winding transformer; open-
delta-connected voltages).
Section 3
− Clarified independent harmonic blocking selection in Figure 3.4: Differential Element Harmonic
Blocking Logic.
− Rearranged data in Table 3.3: Overcurrent Element Summary.
− Corrected 50Qn1, 50Nn1, 51Qn, and 51Nn logic and text to show the elements use 3I
2
and I
R
instead
of I
2
and I
0
, respectively.
− Corrected Figure 3.12: Combined Overcurrent Example.
− Made other minor miscellaneous changes.
Section 6
− Added information on settings changes via the front panel and serial port, added missing settings
descriptions, and consolidated settings sheets.
Section 9
− Made minor miscellaneous changes.
20000216 New Manual Release.
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