Schweitzer Engineering SEL-351P - Page 566

Date Code 990215 Standard Event Reports and SER 12-15
SEL-351P Manual Técnico
Column
Heading
Corresponding Elements
(Relay Word Bits) Symbol Definition
59 V 59VP, 59VS P Phase voltage window element
59VP picked up (used in
synchronism check).
S Channel VS voltage window
element 59VS picked up (used in
synchronism 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 First synchronism check element
25A1 element picked up.
2 Second synchronism check
element 25A2 element picked up.
b Both 25A1 and 25A2 picked up.
81 27B 27B81 * Frequency logic instantaneous
undervoltage 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.
81 56 81D5, 81D6 5 Frequency element 81D5 picked
up.
6 Frequency element 81D6 picked
up.
b Both 81D5 and 81D6 picked up.