Schweitzer Engineering SEL-351P - Page 561

12-10 Standard Event Reports and SER Date Code 990215
SEL-351P Manual Técnico
Column
Heading
Corresponding Elements
(Relay Word Bits) Symbol Definition
52A RAW52A (see Figure
7.29)
* Breaker auxiliary contact 52a
asserted – breaker closed
(RAW52A).
52B RAW52B (see Figure
7.29)
* Breaker auxiliary contact 52b
asserted – breaker open
(RAW52B).
Chg TRCAP, CLCAP
(see Figure 7.29)
T
C
b
Trip capacitor charged higher than
80 Vdc (TRCAP).
Close capacitor charged higher
than 20 Vdc (CLCAP).
Both TRCAP and CLCAP
asserted.
SF6 SF6LO (see Figure 7.29) L SF6 gas pressure low (SF6LO)
Digital Protection and Control Section of Event Report
51P1
51P2
51P1, 51P1T, 51P1R
51P2, 51P2T, 51P2R
.
Time-overcurrent element reset
(51_R).
51N1
51N2
51N1, 51N1T, 51N1R
51N2, 51N2T, 51N2R
p Time-overcurrent element picked
up and timing (51_).
51G1
51G2
51G1, 51G1T, 51G1R
51G2, 51G2T, 51G2R
T Time-overcurrent element timed
out (51_T).
51 Q 51Q, 51QT, 51QR r Time-overcurrent element timing
to reset.
1 Time-overcurrent element timing
to reset after having timed out
(when element reset is set for 1
cycle, not electromechanical
reset).
50 P 50A, 50B, 50C A Single-phase instantaneous
overcurrent element 50A picked
up.
B Single-phase instantaneous
overcurrent element 50B picked
up.
C Single-phase instantaneous
overcurrent element 50C picked
up.
a Both 50A and 50B picked up.
b Both 50B and 50C picked up.
c Both 50C and 50A picked up.
3 50A, 50B, and 50C picked up.