iv
Manual Change Information
Date Code 20020218
SEL-387E Instruction Manual
Revision
Date
Summary of Revisions
20001116
(
continued
)
Included
SEL-387 Relay Command Summary
; corrected table 7.2 on page
7-3; deleted information about cable connection SEL-PRTU to SEL-387E
and added information about connection of Cable 272A between
SEL-2020/2030 and SEL-387E Relay on page 7-5; added warning about
changing default passwords to private passwords at relay installation on
pages 7-22 and 8-10; added notes about taking care when setting the date
and time on pages 7-17 and 7-32; added note about making SER
settingswith care on page 7-28 in
Section 7: Serial Port Communications
and Commands
.
Added notes about taking care when setting the date and time on pages 8-6
and 8-7; added Winding 1 and 2 current sum for power calculations in
Section 8: Front-Panel Interface
.
Made typographical corrections in
Appendix D: Configuration, Fast Meter,
and Fast Operate Commands
and
Appendix E: Compressed ASCII
Commands
.
20000728
Corrected equation in
Section 3: Differential, Overcurrent, Voltage, and
Frequency Elements
, page 3-25.
Added detailed information about differential element application and
setting and overcurrent protection in
Section 6: Additional Settings and
Settings Sheets
.
20000606
Corrected
Figure 3.4: Differential Element Harmonic Blocking Logic
and
Figure 3.6: REF Enable/Block Logic
and made typographical corrections
in
Section 3: Differential, Overcurrent, Voltage, and Frequency Elements
.
Made typographical corrections in
Settings Sheets
and
Settings Sheets
Example
in
Section 6: Additional Settings and Settings Sheets
.
Added firmware SEL-387E-R101-V0-Z001001-D20000606,
Appendix A:
Firmware Versions in This Manual
to correct second-harmonic and fifth-
harmonic elements’ failure to block when required.
20000414
Clarified PT connections in
Figure 2.16: Example AC Connections (three-
winding transformer; open-delta-connected voltages)
in
Section 2:
Installation
.
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
; and made other minor miscellaneous changes in
Section 3:
Differential, Overcurrent, Voltage, and Frequency Elements
.
Added information on settings changes via the front panel and serial port,
added missing settings descriptions, and consolidated settings sheets in
Section 6: Additional Settings and Settings Sheets
.