Schweitzer Engineering Laboratories SEL-351R Instruction Manual page 499

S E
EQUENTIAL VENTS
See Figure 12.5 for an example SER report.
SER Triggering
The control triggers (generates) an entry in the SER report for a change of state of any one of the
elements listed in the SER1, SER2, and SER3 trigger settings. The factory default settings are:
SER1 = TRIP 51P1T 51P2T 51G1T 51G2T 51N1T 51N2T 67P2T 67G2T 67N2T 67N3T
81D1T PB9 67P1 67G1 67N1
SER2 = CLOSE 52A CF 79CY 79LO 79RS SH0 SH1 SH2 SH3 SH4 PB8 59A1
SER3 = TOSLP BCBOK DTFAIL
The elements are Relay Word bits referenced in Table 9.3. The control monitors each element in
the SER lists every 1/4 cycle. If an element changes state, the control time-tags the changes in
the SER. For example, setting SER1 contains:
• Time-overcurrent element trips (51P1T, 51P2T, 51G1T, 51G2T, 51N1T, and 51N2T)
• Definite-time overcurrent element trips (67P2T, 67G2T, 67N2T, 67N3T)
• Definite-time frequency element (81D1T)
• Manual TRIP from front-panel pushbutton (PB9)
• Instantaneous overcurrent element pickups (67P1, 67G1, 67N1)
Any time one of these elements picks up or drops out, the relay time-tags the change in the SER.
The other two SER factory settings (SER2 and SER3) trigger rows in the SER event report for
the following conditions:
• Changes in breaker status (52A) and reclose operations
• When control is powered down due to low battery (TOSLP)
• Other battery and battery-charger status-related Relay Word Elements
The control adds a message to the SER to indicate power up or settings change (to active setting
group) conditions:
Relay newly powered up or settings changed
Each entry in the SER includes SER row number, date, time, element name, and the new element
state.
Making SER Trigger Settings
You can enter up to 24 element names in each of the SER settings via the SET R command. See
Table 9.3 for references to valid recloser control element (Relay Word bit) names. See the SET
R command in Table 9.1 and corresponding Settings Sheet 20 of 28 at the end of Section 9:
Setting the SEL-351R Recloser Control. Use either spaces or commas to delimit the elements.
For example, if you enter setting SER1 as:
SER1 = 51P1T, 51G1T 51P2T,,51G2T , 50P1, , 50P2
Date Code 20020215
R (SER) R
ECORDER
Standard Event Reports and SER
SEL-351R Instruction Manual
EPORT
12-21