12.17
Date Code 20080213 Instruction Manual SEL-351A Relay
Standard Event Reports and SER
Standard 15/30-Cycle Event Reports
59 V1
(delta-connected)
59V * Positive-sequence instantaneous
overvoltage element 59V1 picked
up.
59 Q
(delta-connected)
59Q, 59Q2 1 Negative-sequence instantaneous
overvoltage element 59Q picked
up.
2 Negative-sequence instantaneous
overvoltage element 59Q2 picked
up.
b Both 59Q and 59Q2 picked up.
59 N
(wye-connected)
59N1, 59N2 1 Zero-sequence instantaneous over-
voltage element 59N1 picked up.
2 Zero-sequence instantaneous over-
voltage element 59N2 picked up.
b Both 59N1 and 59N2 picked up.
59 S 59S1, 59S2 1 Channel VS instantaneous over-
voltage element 59S1 picked up.
2 Channel VS instantaneous over-
voltage element 59S2 picked up.
b Both 59S1 and 59S2 picked up.
59 V 59VP, 59VS P Phase voltage window element
59VP picked up (used in synchro-
nism check).
S Channel VS voltage window ele-
ment 59VS picked up (used in syn-
chronism check).
b Both 59VP and 59VS picked up.
25 SF SF * Slip frequency element SF picked
up (used in synchronism check).
25 A 25A1, 25A2 1 Synchronism check element 25A1
element picked up.
2 Synchronism check element 25A2
element picked up.
b Both 25A1 and 25A2 picked up.
81 27B 27B81 * Frequency logic instantaneous und-
ervoltage element 27B81 picked
up.
81 12 81D1, 81D2 1 Frequency element 81D1 picked
up.
2 Frequency element 81D2 picked
up.
b Both 81D1 and 81D2 picked up.
81 34 81D3, 81D4 3 Frequency element 81D3 picked
up.
4 Frequency element 81D4 picked
up.
b Both 81D3 and 81D4 picked up.
Table 12.3 Output, Input, and Protection, and Control Element Event Report
Columns (Sheet 6 of 9)
Column Heading
Corresponding
Elements (Relay
Word Bits)
Symbol Definition
Courtesy of NationalSwitchgear.com
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