4-20
Loss-of-Potential, Load Encroachment, and Directional Element Logic
Date Code 20010307
SEL-351-0, -1, -2, -3, -4 Instruction Manual
,IDOHYHOGLUHFWLRQVHWWLQJHJ',5LVVHW
',5 1 QRQGLUHFWLRQDO
WKHQWKHFRUUHVSRQGLQJ/HYHOGLUHFWLRQDOFRQWURORXWSXWVLQ)LJXUHDQG)LJXUHDVVHUWWR
ORJLFDO7KHUHIHUHQFHG/HYHORYHUFXUUHQWHOHPHQWVLQ)LJXUHDQG)LJXUHDUHWKHQ
QRWFRQWUROOHGE\WKHGLUHFWLRQDOFRQWUROORJLF
6HHWKHEHJLQQLQJRIIROORZLQJVXEVHFWLRQ
'LUHFWLRQDO&RQWURO6HWWLQJV
IRUGLVFXVVLRQRIWKH
RSHUDWLRQRIOHYHOGLUHFWLRQVHWWLQJV',5WKURXJK',5ZKHQWKHGLUHFWLRQDOFRQWUROHQDEOH
VHWWLQJ(LVVHWWR( 1
,QVRPHDSSOLFDWLRQVOHYHOGLUHFWLRQVHWWLQJV',5WKURXJK',5DUHQRWIOH[LEOHHQRXJKLQ
DVVLJQLQJWKHGHVLUHGGLUHFWLRQIRUFHUWDLQRYHUFXUUHQWHOHPHQWV6XEVHFWLRQ
'LUHFWLRQDO&RQWURO
3URYLGHGE\7RUTXH&RQWURO6HWWLQJV
DWWKHHQGRIWKLVVHFWLRQGHVFULEHVKRZWRDYRLGWKLV
OLPLWDWLRQIRUVSHFLDOFDVHV
)LJXUH1HJDWLYH6HTXHQFH9ROWDJH3RODUL]HG'LUHFWLRQDO(OHPHQWIRU1HJDWLYH
6HTXHQFHDQG3KDVH2YHUFXUUHQW(OHPHQWV