A.2
SEL-751A Relay
Instruction Manual
Date Code 20100129
Firmware and Manual Versions
Firmware
Table A.2
300 Series Firmware Revision History
Firmware Identification (FID) Number
Summary of Revisions
Manual Date Code
SEL-751A-R302-V0-Z006003-D20100129
➤
Added faulted phase Identification logic and included the
faulted phase information in the Event Summary Report
Event Type field. Also made it available in the Modbus
Map.
Firmware revision R302 is for upgrading relays with R101–
R301 firmware.
20100129
SEL-751A-R301-V0-Z005003-D20090501
➤
Added new power elements option with selected voltage
card options.
➤
Added new neutral CT current range option 5.0–
1000.0 mA, (50 mA nom).
➤
Added FASTOP setting to Port 1 (Ethernet) settings to
allow breaker control using Fast Operate.
➤
SEL-751A firmware versions R301 and higher require
DeviceNet card firmware version 1.005.
20090501
SEL-751A-R300-V0-Z004003-D20090109
➤
Added new arc-flash detection (AFD), arc-flash time-over-
light (TOL) and overcurrent (50PAF and 50NAF) protec-
tion options. Added arc-flash light measurements to the
CEV report and created a meter light report.
20090109
➤
Added DNP3 serial and LAN/WAN protocol options.
➤
Added synchrophasor measurements, metering, and
C37.118 Protocol to the SEL-751A base model.
➤
Added breaker monitor function to the SEL-751A base
model.
➤
Added demand and peak demand metering option to
selected models.
➤
Added IRIG-B input capability to fiber-optic serial Port 2
option.
➤
Improved frequency measurement and frequency element
accuracy to 0.01 Hz resolution.
➤
Increased frequency elements (81) from 4 to 6.
➤
Added rate-of-change of frequency (81R) elements to
selected models.
➤
Added residual overvoltage (59G) and negative-sequence
overvoltage (59Q) elements option to selected models.
➤
Added voltage ratio correction factor (setting 25RCF) to
synchronism-check element (25).
➤
Added Relay Word bits 3P27 (all voltage phases below
27P1P setting) and 3P59 (all voltage phases above 59P1P
setting).
➤
Updated rms and max/min metering quantities to include
VS (synchronism voltage).
➤
Improved energy metering resolution to one kWh and
updated energy metering convention.
➤
Added relay serial number field in DNP and Modbus.
Содержание 751A
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