Sel SEL-351A - INSTANTANEOUS;DEFINITE-TIME OVERCURRENT ELEMENTS

Date Code 20010307 Overcurrent, Voltage, Synchronism Check, and Frequency Elements 3-1
SEL-351A Instruction Manual
SECTION 3: OVERCURRENT, VOLTAGE, SYNCHRONISM
CHECK, AND FREQUENCY ELEMENTS
INSTANTANEOUS/DEFINITE-TIME OVERCURRENT ELEMENTS
Phase Instantaneous/Definite-Time Overcurrent Elements
)RXUOHYHOVRISKDVHLQVWDQWDQHRXVGHILQLWHWLPHRYHUFXUUHQWHOHPHQWVDUHDYDLODEOH7ZR
DGGLWLRQDOOHYHOVRISKDVHLQVWDQWDQHRXVRYHUFXUUHQWHOHPHQWV/HYHOVDQGDUHDOVRDYDLODEOH
7KHGLIIHUHQWOHYHOVDUHHQDEOHGZLWKWKH(3HQDEOHVHWWLQJDVVKRZQLQ)LJXUH)LJXUH
DQG)LJXUH
Settings Ranges
6HWWLQJUDQJHIRUSLFNXSVHWWLQJV33WKURXJK33
±$VHFRQGDU\ $QRPLQDOSKDVHFXUUHQWLQSXWV,$,%,&
±$VHFRQGDU\ $QRPLQDOSKDVHFXUUHQWLQSXWV,$,%,&
6HWWLQJUDQJHIRUGHILQLWHWLPHVHWWLQJV3'WKURXJK3'
±F\FOHVLQF\FOHVWHSV
Accuracy
3LFNXS $VHFRQGDU\DQGRIVHWWLQJ$QRPLQDOSKDVHFXUUHQWLQSXWV,$,%,&
$VHFRQGDU\DQGRIVHWWLQJ$QRPLQDOSKDVHFXUUHQWLQSXWV,$,%,&
7LPHU F\FOHVDQGRIVHWWLQJ
7UDQVLHQW2YHUUHDFK RIVHWWLQJ