A-8 Firmware Versions Date Code 20011203
SEL-321/321-1 Instruction Manual
Firmware
Part/Revision No.
SEL-321-1 Relay Version
Description of Firmware
Revision B or C Main Board and Low-Level
Test Capability (ET3 or TT3):
This firmware differs from previous versions as
follows:
- Fix for TCM logic bug.
SEL-321-1-R426-Z001001-D20011203 60 Hz, 5 Amp, 1 I/O Board
SEL-321-1-R476-Z001001-D20011203 50 Hz, 5 Amp, 1 I/O Board
SEL-321-1-R527-Z001001-D20011203 60 Hz, 5 Amp, 2 I/O Boards
SEL-321-1-R576-Z001001-D20011203 50 Hz, 5 Amp, 2 I/O Boards
SEL-321-1-R627-Z001001-D20011203 60 Hz, 5 Amp, 1 I/O Board, ACB rotation
SEL-321-1-R657-Z001001-D20011203 60 Hz, 1 Amp, 1 I/O Board, ACB rotation
SEL-321-1-R727-Z001001-D20011203 60 Hz, 5 Amp, 2 I/O Boards, ACB rotation
SEL-321-1-R757-Z001001-D20011203 60 Hz, 1 Amp, 2 I/O Boards, ACB rotation
SEL-321-1-R826-Z001001-D20011203 60 Hz, 1 Amp, 1 I/O Board
SEL-321-1-R876-Z001001-D20011203 50 Hz, 1 Amp, 1 I/O Board
SEL-321-1-R926-Z001001-D20011203 60 Hz, 1 Amp, 2 I/O Boards
SEL-321-1-R977-Z001001-D20011203 50 Hz, 1 Amp, 2 I/O Boards
This firmware differs from previous versions as
follows:
- Improved frequency tracking algorithm.
- Availability of 59Q and 59P elements when
advanced LOP is enabled.
SEL-321-1-R425-Z001001-D20011026 60 Hz, 5 Amp, 1 I/O Board
SEL-321-1-R475-Z001001-D20011026 50 Hz, 5 Amp, 1 I/O Board
SEL-321-1-R526-Z001001-D20011026 60 Hz, 5 Amp, 2 I/O Boards
SEL-321-1-R575-Z001001-D20011026 50 Hz, 5 Amp, 2 I/O Boards
SEL-321-1-R626-Z001001-D20011026 60 Hz, 5 Amp, 1 I/O Board, ACB rotation
SEL-321-1-R656-Z001001-D20011026 60 Hz, 1 Amp, 1 I/O Board, ACB rotation
SEL-321-1-R726-Z001001-D20011026 60 Hz, 5 Amp, 2 I/O Boards, ACB rotation
SEL-321-1-R756-Z001001-D20011026 60 Hz, 1 Amp, 2 I/O Boards, ACB rotation
SEL-321-1-R825-Z001001-D20011026 60 Hz, 1 Amp, 1 I/O Board
SEL-321-1-R875-Z001001-D20011026 50 Hz, 1 Amp, 1 I/O Board
SEL-321-1-R925-Z001001-D20011026 60 Hz, 1 Amp, 2 I/O Boards
SEL-321-1-R976-Z001001-D20011026 50 Hz, 1 Amp, 2 I/O Boards
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