Schweitzer Engineering Laboratories SEL-751 - Page 598

10.16
SEL-751 Relay Instruction Manual Date Code 20170927
Analyzing Events
Event Reporting
Figure 10.4 and Figure 10.5 look in detail at one cycle of A-phase current
(channel IA) identified in Figure 10.3. Figure 10.4 shows how the event report
ac current column data relate to the actual sampled waveform and rms values.
Figure 10.5 shows how the event report current column data can be converted
to phasor rms values. Voltages are processed similarly.
RA18TYPE:= I
RA19TYPE:= I
RA20TYPE:= I
RA21TYPE:= I
RA22TYPE:= I
RA23TYPE:= I
RA24TYPE:= I
RA25TYPE:= I
RA26TYPE:= I
RA27TYPE:= I
RA28TYPE:= I
RA29TYPE:= I
RA30TYPE:= I
RA31TYPE:= I
RA32TYPE:= I
LDLIST := NA
LDAR := 15
Logic Settings
ELAT := 4 ESV := 5 ESC := N EMV := N
SET01 := NA
RST01 := NA
SET02 := R_TRIG SV02T AND NOT LT02
RST02 := R_TRIG SV02T AND LT02
SET03 := PB03_PUL AND LT02 AND NOT 52A
RST03 := (PB03_PUL OR PB04_PUL OR SV03T) AND LT03
SET04 := PB04_PUL AND 52A
RST04 := (PB03_PUL OR PB04_PUL OR SV04T) AND LT04
SV01PU := 0.00 SV01DO := 0.00
SV01 := NA
SV02PU := 3.00 SV02DO := 0.00
SV02 := PB02
SV03PU := 0.00 SV03DO := 0.00
SV03 := LT03
SV04PU := 0.00 SV04DO := 0.00
SV04 := LT04
SV05PU := 0.25 SV05DO := 0.25
SV05 := (PB02 OR LT03 OR LT04) AND NOT SV05T
OUT101FS:= Y OUT101 := HALARM OR SALARM OR AFALARM
OUT102FS:= N OUT102 := CLOSE
OUT103FS:= N OUT103 := TRIP
=>>
a
Replaced with 67 (directional overcurrent) when setting EDIR := Y or AUTO.
Figure 10.3 Example Standard 15-Cycle Event Report 1/4-Cycle Resolution (Continued)