Download Print this page

Siemens 7SA513 Instruction Manual page 222

Numerical distance protection for ehv systems
Hide thumbs Also See for 7SA513:

Advertisement

6$
9
7KH VHWWLQJ YDOXHV RI WKH IXVH IDLOXUH PRQLWRU DG
GUHVVHV  DQG  KDYH WR EH FKRVHQ VR WKDW LW
SLFNV XS UHOLDEO\ LQ WKH FDVH RI VLQJOH SKDVH YROWDJH
IDLOXUH FULWHULRQ  [ 8
 EXW RQ WKH RWKHU KDQG GRHV

QRW SLFN XS LQ WKH FDVH RI HDUWK IDXOWV LQ DQ HDUWKHG
QHWZRUN ,
PXVW WKHUHIRUH EH VHW DW D FRUUHVSRQG
(
LQJO\ VHQVLWLYH OHYHO EHORZ WKH VPDOOHVW IDXOW FXUUHQW
LQ WKH FDVH RI HDUWK IDXOWV  7KH IXQFWLRQ l)XVH IDLO
   
) 8 6 (  ) $ , /
2 1
2 ) )
   
) ) 0
 
9
   
) ) 0
   
,  , Q
7KH IROORZLQJ LV YDOLG IRU ILUPZDUH YHUVLRQ 9 RU
KLJKHU
,I D PLQLDWXUH FLUFXLW EUHDNHU IRU YROWDJH WUDQVIRUPHUV
97 PFE LV LQVWDOOHG LQ WKH VHFRQGDU\ FLUFXLW RI WKH
YROWDJH WUDQVIRUPHUV WKH VWDWXV LV VHQW YLD ELQDU\ LQ
SXW WR WKH GHYLFH LQIRUPLQJ LW DERXW WKH SRVLWLRQ RI
WKH 97 PFE ,I D VKRUWFLUFXLW LQ WKH VHFRQGDU\ VLGH
LQLWLDWHV WKH WULSSLQJ RI WKH 97 PFE WKH GLVWDQFH
   
7

P V

 8 R !
, H 
9 7  P F E
XUH PRQLWRUl PXVW QRW EH FKRVHQ IRU OLQHV LQ
HDUWKHG QHWZRUNV LQ ZKLFK HDUWK IDXOWV ZLWK VPDOO
RU ]HUR HDUWK FXUUHQWV FDQ RFFXU IRU H[DPSOH
ZKHQ IHHGHU WUDQVIRUPHUV PD\ QRW EH HDUWKHG ,Q
QRQHDUWKHG QHWZRUNV WKLV IXVH IDLOXUH PRQLWRU LV QRW
PHDQLQJIXO DQG ZLOO EH LJQRUHG E\ WKH 6$ 7KH
IXVH IDLOXUH PRQLWRU FDQ EH VZLWFKHG RII XQGHU DG
GUHVV 
)XVH IDLOXUH PRQLWRU LV
21 VZLWFKHG RQ
2)) VZLWFKHG RII
'LVSODFHPHQW YROWDJH 
IDLOXUH VKRXOG EH GHWHFWHG
6PDOOHVW VHWWLQJ YDOXH
/DUJHVW VHWWLQJ YDOXH
(DUWK FXUUHQW DERYH ZKLFK QR IXVH IDLOXUH LV
DVVXPHG
6PDOOHVW VHWWLQJ YDOXH
/DUJHVW VHWWLQJ YDOXH
SURWHFWLRQ IXQFWLRQ KDV WR EH EORFNHG LPPHGLDWHO\
2WKHUZLVH D WULS E\ WKH GLVWDQFH SURWHFWLRQ GXH WR
WKH ODFN RI PHDVXUHG YROWDJH ZKLOH ORDG FXUUHQW LV
SRVVLEOH 7KH EORFNLQJ PXVW EH IDVWHU WKDQ WKH ILUVW
VWDJH RI WKH GLVWDQFH SURWHFWLRQ7KLV UHTXLUHV DQ H[
WUHPHO\ VKRUW UHDFWLRQ WLPH IRU WKH 97 PFE
{
IRU  +]
 PV IRU  +] QRPLQDO IUHTXHQF\  ,I
WKLV FDQQRW EH HQVXUHG WKH UHDFWLRQ WLPH RI WKH PFE
LV WR EH VHW XQGHU DGGUHVV  7 97PFE
5HDFWLRQ WLPH RI WKH 97 VHFRQGDU\ PFE
6PDOOHVW VHWWLQJ YDOXH
/DUJHVW VHWWLQJ YDOXH
IURP ILPZDUH YHUVLRQ 9 RU KLJKHU

2SHUDWLQJ LQVWUXFWLRQV
8
 DERYH ZKLFK IXVH


 9
 9
 k ,
1
 k ,
1

 PV
 PV
&*&
{
 PV

Advertisement

loading