Schweitzer Engineering Laboratories SEL-321 - Page 343

Date Code 20011203 Firmware Versions A-11
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:
- Correct problem where relay incorrectly
processed SEL
OGIC
®
Control Equations
SEL-321-1-R419-980709 60 Hz, 5 Amp, 1 I/O Board
SEL-321-1-R469-980709 50 Hz, 5 Amp, 1 I/O Board
SEL-321-1-R519-980709 60 Hz, 5 Amp, 2 I/O Boards
SEL-321-1-R569-980709 50 Hz, 5 Amp, 2 I/O Boards
SEL-321-1-R620-980709 60 Hz, 5 Amp, 1 I/O Board, ACB rotation
SEL-321-1-R720-980709 60 Hz, 5 Amp, 2 I/O Boards, ACB rotation
SEL-321-1-R819-980709 60 Hz, 1 Amp, 1 I/O Board
SEL-321-1-R869-980709 50 Hz, 1 Amp, 1 I/O Board
SEL-321-1-R919-980709 60 Hz, 1 Amp, 2 I/O Boards
SEL-321-1-R970-980709 50 Hz, 1 Amp, 2 I/O Boards
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:
- Changed series compensation logic
- Changed long memory constant time to 31.75 cycles
SEL-321-1-R418-980601 60 Hz, 5 Amp, 1 I/O Board
SEL-321-1-R468-980601 50 Hz, 5 Amp, 1 I/O Board
SEL-321-1-R518-980601 60 Hz, 5 Amp, 2 I/O Boards
SEL-321-1-R568-980601 50 Hz, 5 Amp, 2 I/O Boards
SEL-321-1-R619-980601 60 Hz, 5 Amp, 1 I/O Board, ACB rotation
SEL-321-1-R719-980601 60 Hz, 5 Amp, 2 I/O Boards, ACB rotation
SEL-321-1-R818-980601 60 Hz, 1 Amp, 1 I/O Board
SEL-321-1-R868-980601 50 Hz, 1 Amp, 1 I/O Board
SEL-321-1-R918-980601 60 Hz, 1 Amp, 2 I/O Boards
SEL-321-1-R969-980601 50 Hz, 1 Amp, 2 I/O Boards