Siemens SIPROTEC 7SA511, Instruction Manual

Page: 51 / 326

0HWKRG RI RSHUDWLRQ 6$
9
&*&
'LUHFWLRQDO GHWHUPLQDWLRQ
7KH GLUHFWLRQ RI WKH IORZ RI IDXOW HQHUJ\ LV GHWHUPLQHG
LQ D VLPLODU ZD\ WR GLVWDQFH PHDVXUHPHQW 6HFWLRQ
)RU WKH GLUHFWLRQDO GHWHUPLQDWLRQ KRZHYHU
VRXQG SKDVH DQG VWRUHG UHIHUHQFH YROWDJHV DUH
XVHG ,W LV WKXV HQVXUHG WKDW WKH UHOD\ FRUUHFWO\ GHWHU
PLQHV WKH GLUHFWLRQ RI DOO W\SHV RI IDXOW HYHQ ZKHQ
WKH VKRUWFLUFXLW YROWDJH KDV FROODSVHG 7KH GHSWK RI
WKH VWRUHG YROWDJH YDULHV GHSHQGHQW RQ WKH PHDVXU
LQJ FRQGLWLRQV 7KH VWRUHG YROWDJH LV RQO\ RI LPSRU
WDQFH LI WKH PHDVXULQJFLUFXLW YROWDJH LV QRW VXIIL
FLHQW IRU D SUHFLVH GLUHFWLRQDO GHWHUPLQDWLRQ 6LQFH
WKH SKDVH UHODWLRQVKLS RI WKH VWRUHG YROWDJHV LV IUH
TXHQF\ GHSHQGDQW WKH IUHTXHQF\ LV PHDVXUHG DQG
IHG LQWR WKH FDOFXODWLRQ
7KH UHIHUHQFH YROWDJH IRU ERWK D SKDVHHDUWK ORRS
DQG D SKDVHSKDVH ORRS LV DOZD\V DW ULJKW DQJOHV WR
WKH VKRUW FLUFXLW YROWDJHV )LJXUH 7KLV LV FRQ
VLGHUHG LQ WKH FDOFXODWLRQ RI WKH GLUHFWLRQDO YHFWRU
7DEOH VKRZV WKH DOORFDWLRQ RI PHDVXUHG YDOXHV
IRU WKH FDOFXODWLRQ RI GLVWDQFH DQG GLUHFWLRQ WR WKH
SRVVLEOH IDXOW ORRSV
7KH WKHRUHWLFDO GLUHFWLRQDO OLQH LV VKRZQ LQ )LJXUH
,Q SUDFWLFH WKH SRVLWLRQ RI WKH GLUHFWLRQDO FKDU
DFWHULVWLF LV GHSHQGHQW XSRQ WKH VRXUFH LPSHGDQFH
DV ZHOO DV WKH ORDG FXUUHQW FDUULHG E\ WKH OLQH LPPHGL
DWHO\ EHIRUH IDXOW LQFHSWLRQ
8
//
8
//
8
/
8
/
8
/
8
//
8
//
8
/
8
/
8
/
D /RRS SKDVHHDUWK /( E /RRS SKDVHSKDVH //
)LJXUH 5HIHUHQFH YROWDJHV IRU GLUHFWLRQDO GHWHUPLQDWLRQ
)DXOWHG
ORRS
0HDVXULQJ FXUUHQW
GLVWDQFHGLUHFWLRQ
0HDVXULQJ YROWDJH
GLVWDQFH
0HDVXULQJ YROWDJH
GLUHFWLRQ
/(
/(
/(
//
//
//
8
/(
8
/(
8
/(
8
//
8
//
8
//
8
//
8
//
8
//
8
//
8
//
8
//
8
//
8
//
8
//
,
/
N
(
k ,
(
,
/
N
(
k ,
(
,
/
N
(
k ,
(
,
/
,
/
,
/
,
/
,
/
,
/
1RWH N
(
=
(
=
/
7DEOH 0HDVXUHG YDOXHV IRU GLVWDQFH FDOFXODWLRQ DQG GLUHFWLRQDO GHWHUPLQDWLRQ