Schweitzer Engineering Laboratories SEL-751 - Page 593

10.11
Date Code 20170927 Instruction Manual SEL-751 Relay
Analyzing Events
Event Reporting
Note that the ac values change from plus to minus (–) values in Figure 10.3,
indicating the sinusoidal nature of the waveforms.
7
Both 67P1P & 67P4P picked up
8
Both 67P2P & 67P3P picked up
9
Both 67P2P & 67P4P picked up
A
Both 67P3P & 67P4P picked up
B
67P1P & 67P2P & 67P3P picked up
C
67P1P & 67P2P & 67P4P picked up
D
67P1P & 67P3P & 67P4P picked up
E
67P2P & 67P3P & 67P4P picked up
F
All four 67P1P & 67P2P & 67P3P & 67P4P picked up
50NQG N
Any one of 50N1P / 50N2P / 50N3P / 50N4P picked up
Q
Any one of 50Q1P / 50Q2P / 50Q3P / 50Q4P picked up
G
Any one of 50G1P / 50G2P / 50G3P / 50G4P picked up
a
Both 50NxP & 50QyP picked up, x, y = 1–4
b
Both 50QxP & 50GyP picked up, x, y = 1–4
c
Both 50GxP & 50NyP picked up, x, y = 1–4
3
All 50NxP & 50QyP & 50GzP Picked up, x,y,z = 1–4
67QG Q
Any one of 67Q1P / 67Q2P / 67Q3P / 67Q4P picked up
G
Any one of 67G1P / 67G2P / 67G3P / 67G4P picked up
a
Both 67QxP & 67GyP picked up, x, y =1–4
81 1
Any combination 81DxT picked up, x = 1–6
RTD Wdg
a
w
WDGALRM * !WDGTRIP
W
WDGTRIP
RTD Brg
a
b
BRGALRM * !BRGTRIP
B
BRGTRIP
RTD Oth
a
o
OTHALRM * !OTHTRIP
O
OTHTRIP
RTD Amb
a
a
AMBALRM * !AMBTRIP
A
AMBTRIP
RTD In
a
1
RTDIN
In 12 1
IN101 * ! IN102
2
IN102 * !IN101
b
IN101 * IN102
Out 12 1
OUT101 * !OUT102
2
OUT102 * !OUT101
b
OUT101 * OUT102
Out 3 3
OUT103
a
These quantities are not displayed when the relay has the voltage card option with VS
(synchronized voltage) and VDC (battery voltage) inputs.
Table 10.4 Output, Input, Protection, and Control Element Event Report
Columns (Sheet 2 of 2)
Column Heading
Column
Symbols
Description