Siemens SIPROTEC 7RW600 Instruction Manual page 33

5:
9
 2YHUYROWDJH SURWHFWLRQ 8! 8!! 8
2YHUYROWDJH SURWHFWLRQ KDV WKH WDVN RI SURWHFWLQJ
HOHFWULFDO PDFKLQHV DQG WKH DVVRFLDWHG HOHFWULFDO
SODQW FRQQHFWHG WR LW IURP WKH HIIHFWV RI LPSHUPLVVL
EOH YROWDJH LQFUHDVHV 2YHUYROWDJHV FDQ EH FDXVHG
E\ LQFRUUHFW PDQXDO RSHUDWLRQ RI WKH H[FLWDWLRQ V\V
WHP IDXOW\ RSHUDWLRQ RI WKH DXWRPDWLF YROWDJH UHJX
ODWRU IXOO ORDG VKHGGLQJ RI D JHQHUDWRU VHSDUDWLRQ
RI WKH JHQHUDWRU IURP WKH V\VWHP RU GXULQJ LVODQG RS
HUDWLRQ
7KH UHOD\ SURYLGHV WZR PHDVXUHG YROWDJH LQSXWV 8
DQG 8  7KXV LW LV SRVVLEOH HLWKHU WR SURFHVV WZR LQ
GHSHQGHQW YROWDJHV DQG PRQLWRU WKHP IRU RYHUYROW
DJH RU WR SURFHVV WKH YROWDJHV RI D WKUHHSKDVH V\V
WHP ,Q WKH ILUVW FDVH VHSDUDWH WKUHVKROG YDOXHV 8!
DQG 8[! FDQ EH VHW ,Q WKH ODWWHU FDVH WZR SKDVHWR
SKDVH YROWDJHV PXVW EH FRQQHFWHG WR WKH UHOD\ LQ
9 FRQQHFWLRQ WKH VHWWLQJ YDOXHV 8! DQG 7 8! DUH
WKHQ YDOLG IRU ERWK YROWDJHV DQG WKH VHWWLQJ YDOXHV
8[! DQG 7 8[! DUH LUUHOHYDQW EXW DQQXQFLDWLRQV DUH
&*&
! 8 !!
[ [
JHQHUDWHG IRU HDFK YROWDJH ZKLFK KDV H[FHHGHG WKH
WKUHVKROG
7KH RYHUYROWDJH SURWHFWLRQ LV RI WZRVWDJH GHVLJQ
1XPHULFDO ILOWHUV HQVXUH WKDW RQO\ WKH IXQGDPHQWDO
ZDYHV DUH SURFHVVHG DQG KDUPRQLFV DUH VXS
SUHVVHG 7LPH VWDJHV DUH SURYLGHG WR EULGJH RXW
VKRUW YROWDJH ULVHV $ ODUJH RYHUYROWDJH LQLWLDWHV D
IDVW WULS E\ WKH DVVLJQHG 8!! VWDJH D VPDOO RYHUYRO
WDJH LQLWLDWHV D ORQJWLPH WULS E\ WKH DVVLJQHG 8!
VWDJH 9ROWDJH OLPLW YDOXHV DQG WLPH GHOD\V FDQ EH
VHW LQGLYLGXDOO\ IRU HDFK VWDJH
7ULSSLQJ RI WKH RYHUYROWDJH SURWHFWLRQ FDQ EH
EORFNHG E\ DQ H[WHUQDO FULWHULRQ YLD ELQDU\ LQSXWV
)LJXUH  VKRZV WKH ORJLF GLDJUDP RI WKH RYHU
YROWDJH SURWHFWLRQ ZLWK WZR LQGHSHQGHQW YROWDJHV
)LJXUH  ZLWK WZR SKDVHWRSKDVH YROWDJHV LQ 9 
FRQQHFWLRQ
0HWKRG RI RSHUDWLRQ