Schweitzer Engineering Laboratories SEL-251 - Page 200

A-2 Appendix A Date Code 20000421
SEL-251, -2, -3 Instruction Manual
Firmware
Part/Revision No.
Description of Firmware
SEL-251 Firmware, Revision 4 Main Board Configuration
The functionality of these versions is identical to previous versions.
SEL-151-R511 151 60 Hz 1 A ABC rotation
SEL-151-R561 151 50 Hz 1 A ABC rotation
Added new version:
SEL-251-3-R550 251-3 50 Hz 1 A ABC rotation extended fast meter fast operate
This firmware differs from previous versions as follows:
- Changed the RINGS setting prompt to "RINGS 1-30".
- Added FOP fast operate enable input (applies to SEL-251-3
only).
SEL-151-R608 151 60 Hz 5 A ACB rotation
SEL-251-2-R605 ACB rotation extended fast meter
SEL-251-3-R603 ACB rotation fast operate
SEL-251-2-R408 251-2 60 Hz 5 A extended fast meter
SEL-251-3-R403 251-3 60 Hz 5 A fast operate
SEL-151-R560 151 50 Hz 1 A
SEL-151-R510 151 60 Hz 1 A
SEL-151-R461 151 50 Hz 5 A
SEL-151-R415 151 60 Hz 5 A
This firmware differs from previous versions as follows:
- Added high-side blown-fuse logic with new 27C setting option.
- Improved operation of fast meter.
- Improved fast operate (applies to SEL-251-3 only).
SEL-151-R607 151 60 Hz 5 A ACB rotation
SEL-251-2-R604 ACB rotation extended fast meter
SEL-251-3-R602 ACB rotation fast operate
SEL-251-2-R407 251-2 60 Hz 5 A extended fast meter
SEL-251-3-R402 251-3 60 Hz 5 A fast operate
SEL-151-R559 151 50 Hz 1 A
SEL-151-R509 151 60 Hz 1 A
SEL-151-R460 151 50 Hz 5 A
SEL-151-R414 151 60 Hz 5 A
SEL-151-R605 151 60 Hz 5 A ACB rotation
SEL-251-2-R602 ACB rotation extended fast meter
SEL-251-3-R600 ACB rotation fast operate
SEL-251-2-R405 251-2 60 Hz 5 A extended fast meter
SEL-251-3-R400 251-3 60 Hz 5 A fast operate
SEL-151-R557 151 50 Hz 1 A
SEL-151-R507 151 60 Hz 1 A
SEL-151-R458 151 50 Hz 5 A
SEL-151-R412 151 60 Hz 5 A