Siemens 7SA513 - Page 90

0HWKRG RI RSHUDWLRQ6$
9
&*&

 +LJKUHVLVWDQFH HDUWK IDXOW SURWHFWLRQ RSWLRQDO
,Q HDUWKHG QHWZRUNV LQ ZKLFK WKH HDUWK SDWK UHVLV
WDQFH FDQ EH H[WUHPHO\ KLJK HJ RYHUKHDG OLQHV
ZLWKRXW OLJKWQLQJ SURWHFWLRQ FRQGXFWRU RU VDQG\
VRLOV WKH LPSHGDQFH IDXOW GHWHFWLRQ ZLOO RIWHQ QRW
SLFN XS VLQFH HDUWK IDXOW LPSHGDQFHV FDQ RFFXU
ZKLFK DSSHDU WR OLH RXWVLGH WKH SLFNXS FKDUDFWHULV
WLF RI WKH GLVWDQFH UHOD\
/LQH SURWHFWLRQ 6$ FDQ SURYLGH SURWHFWLYH IXQF
WLRQV IRU VXFK KLJK UHVLVWDQFH HDUWK IDXOWV 7KH IRO
ORZLQJ IHDWXUHV DUH WKHQ DYDLODEOH
 GLUHFWLRQDO HDUWK IDXOW SURWHFWLRQ GHILQLWH WLPH RU
LQYHUVH WLPH HDUWK RYHUFXUUHQW SURWHFWLRQ ZLWK
QRQGLUHFWLRQDO EDFNXS VWDJH
 GLUHFWLRQDO LQYHUVH WLPH ]HUR VHTXHQFH YROWDJH
SURWHFWLRQ ZLWK QRQGLUHFWLRQDO EDFNXS VWDJH
 GLUHFWLRQDO FRPSDULVRQ HDUWK IDXOW SURWHFWLRQ
 LQVWDQWDQHRXV HDUWK IDXOW VWDJH EHIRUH DXWRUHFOR
VXUH DQGRU VZLWFKRQWRIDXOW VWDJH
 SKDVH VHOHFWLRQ IRU VLQJOHSROH DXWRUHFORVXUH
ZLWK DOO SURWHFWLRQ PRGHV
 'LUHFWLRQDO GHWHUPLQDWLRQ
'LUHFWLRQDO GHWHUPLQDWLRQ LV FDUULHG RXW XVLQJ WKH
HDUWK FXUUHQW ,
(
  k ,

 DQG D SRODUL]LQJ YROWDJH 8
3
ZKLFK LV GHULYHG IURP WKH GLVSODFHPHQW YROWDJH 8
(
 c k 8

 UHIHU WR )LJXUH 
$OWHUQDWLYHO\ SRODUL]LQJ TXDQWLW\ FDQ EH D FXUUHQW ,
3
ZKLFK LV GHULYHG IURP WKH VWDUSRLQW FXUUHQW ,
<
PHD
VXUHG LQ WKH HDUWKLQJ FRQGXFWRU RI DQ HDUWKHG IHHGHU
WUDQVIRUPHU UHIHU WR )LJXUH 
$GGLWLRQDOO\ WKH HDUWK FXUUHQW ,
(
FDQ EH SRODUL]HG E\
WKH GLVSODFHPHQW YROWDJH DV ZHOO DV WKH VWDUSRLQW
FXUUHQW ,Q WKLV FDVH WKH SRODUL]LQJ TXDQWLW\ LV WKH
VXP RI WKH SRODUL]LQJ YROWDJH 8
3
DQG D YROWDJH SUR
SRUWLRQDO WR WKH SRODUL]LQJ FXUUHQW ,
3
 5DWHG FXUUHQW LQ
,
3
FRUUHVSRQGV WR  9 YROWDJH LQ WKLV SURSRUWLRQ
$Q DGYDQWDJH RI SRODUL]DWLRQ ZLWK WKH VWDUSRLQW FXU
UHQW LV WKDW LW LV LQGHSHQGHQW RI DQ\ YROWDJH WUDQV
IRUPHU VHFRQGDU\ YROWDJH 7KXV LW RSHUDWHV UHOLDEO\
DOVR LQ FDVH RI VHFRQGDU\ YROWDJH IDLOXUH %XW LW UH
TXLUHV WKDW WKH IDXOW FXUUHQW LV SURGXFHG DW OHDVW SUH
GRPLQDQWO\ IURP WKLV IHHGHU WUDQVIRUPHU IURP ZKLFK
WKH VWDUSRLQW FXUUHQW LV PHDVXUHG
5HYHUVH
8
3
8
(
k     E
,
(
)RUZDUGV
% ,
(
% 8
3
  E
5H
,P
8
(
)LJXUH  'LUHFWLRQDO FKDUDFWHULVWLF ZLWK YROW
DJH SRODUL]DWLRQ
5HYHUVH
,
(
)RUZDUGV
% ,
(
% ,
3
  E
5H
,P
,
<
,
3
)LJXUH  'LUHFWLRQDO FKDUDFWHULVWLF ZLWK FXU
UHQW SRODUL]DWLRQ
$IWHU SLFNXS RQ  k ,
(
! WKH UHOD\ FDUULHV RXW GLUHF
WLRQDO GHWHUPLQDWLRQ 7KLV UHTXLUHV D PLQLPXP GLV
SODFHPHQW YROWDJH IRU ZKLFK WKH 8
(
! VHWWLQJ LV
XVHG ,I WKH GLVSODFHPHQW YROWDJH LV WRR VPDOO D GL
UHFWLRQDO GHWHUPLQDWLRQ LV SRVVLEOH RQO\ ZLWK VWDU
SRLQW FXUUHQW SRODUL]DWLRQ 'LUHFWLRQDO GHWHUPLQDWLRQ
ZLWK 8
(
LV VXSSUHVVHG ZKHQ WKH LQGLFDWLRQ lYROWDJH
WUDQVIRUPHU PLQLDWXUH FLUFXLW EUHDNHU WULSSHGl LV VLJ
QDOOHG WR WKH UHOD\ YLD D ELQDU\ LQSXW
www . ElectricalPartManuals . com