Siemens 7UT513

2SHUDWLQJ LQVWUXFWLRQV87
9
&*&
)RU WKUHHZLQGLQJ WUDQVIRUPHUV ZLWK GLIIHUHQW 09$
UDWLQJV RI WKH ZLQGLQJV WKH XQLW DXWRPDWLFDOO\ UHIHUV
DOO FXUUHQWV WR WKH SRZHU RI WKH ODUJHVW ZLQGLQJ
:KHQ WKH SRZHU UDWLQJV RI WKH ZLQGLQJV GLIIHU
VWURQJO\ IURP HDFK RWKHU PRUH WKDQ WKH IDFWRU  LQ
WHUSRVLQJ WUDQVIRUPHUV DUH UHFRPPHQGHG ,I DQ LQ
WHUSRVLQJ WUDQVIRUPHU VHW 0$$$ LV XVHG IRU
RQH ZLQGLQJ WKH WUDQVIRUPDWLRQ UDWLR RI WKH LQWHUSRV
LQJ WUDQVIRUPHUV PXVW EH FRQVLGHUHG ZKHQ HQWHULQJ
WKH VHWWLQJ IRU WKLV ZLQGLQJ 7KLV LV GRQH E\ GLYLGLQJ
WKH DFWXDO SULPDU\ FXUUHQW WUDQVIRUPHU UDWHG FXUUHQW
E\ WKH ZLQGLQJ UDWLR RI WKH LQWHUSRVLQJ WUDQVIRUPHUV
7KH UHVXOW LV HQWHUHG DV l,1 &7l HJ DGGUHVV 
7KH PDWFKLQJ IDFWRUV ZKLFK DUH FDOFXODWHG E\ WKH
UHOD\ IURP WKH HQWHUHG UDWHG GDWD FDQ EH UHDG RXW LQ
WKH RSHUDWLRQDO DQQXQFLDWLRQV UHIHU WR 6HFWLRQ
 DIWHU SDUDPHWHUL]LQJ KDV EHHQ ILQLVKHG
7KHVH IDFWRUV DUH IRU ZLQGLQJ 
N&7
FXUUHQW SURFHVVHG E\ 87
FXUUHQW WKURXJK WKH UHOD\ WHUPLQDOV
DQG VLPLODU IRU WKH RWKHU ZLQGLQJV
N&7
N&7 RQO\ 87
NV&7  RQO\ 87
NV&7  RQO\ 87
NV&7  RQO\ 87
ZKHUH NV&7 DUH WKH IDFWRUV IRU LQSXWV IURP WKH FXU
UHQW WUDQVIRUPHU LQ WKH VWDUSRLQW FRQQHFWLRQ RI DQ
HDUWKHG WUDQVIRUPHU ZLQGLQJ DV IDU DV WKH\ DUH XVHG
,I WKH VHWWLQJ RI WKH SURWHFWLRQ VKRXOG EH SHUIRUPHG
ZLWK VHFRQGDU\ YDOXHV RQO\ HJ EHFDXVH H[WHUQDO
PDWFKLQJ WUDQVIRUPHUV DUH SUHVHQW WKHQ WKH IDFWRU\
VHW SDUDPHWHUV IRU WUDQVIRUPHU GDWD FDQ UHPDLQ XQ
FKDQJHG 7KH SUHVHWV IRU WUDQVIRUPHU GDWD DSSO\ IRU
DUDWLRRIZLWKRXWSKDVHGLVSODFHPHQW
7KH WUHDWPHQW RI WKH ZLQGLQJ VWDUSRLQW LV RI QR FRQ
FHUQ DV ORQJ DV WKH ]HUR VHTXHQFH FXUUHQWV DUH HOLP
LQDWHG IURP WKH SKDVH FXUUHQWV HJ DGGUHVV  ,R
+$1'/( ,R (/,0,1$7,21 ,Q WKLV FDVH WKH ]HUR VH
TXHQFH FXUUHQWV ZKLFK ZLOO IORZ WKURXJK DQ HDUWKHG
ZLQGLQJ VWDUSRLQW LQ WKH SURWHFWHG ]RQH RI WKH WUDQV
IRUPHU HYHQ ZKHQ DQ H[WHUQDO QHWZRUN HDUWK IDXOW RF
FXUV DUH UHQGHUHG KDUPOHVV
7KH GLVDGYDQWDJH RI WKLV ]HUR VHTXHQFH FXUUHQW
HOLPLQDWLRQ LV WKDW WKH GLIIHUHQWLDO SURWHFWLRQ EH OHVV
VHQVLWLYH LQ FDVH RI DQ LQWHUQDO HDUWK IDXOW LQ WKH SUR
WHFWHG ]RQH IDFWRU



 7KH IROORZLQJ SRVVLELOLWLHV
H[LVW WR LQFUHDVH VHQVLWLYLW\ IRU LQWHUQDO HDUWK IDXOWV
,Q V\VWHPV ZLWK LVRODWHG
RU DUF FRPSHQVDWHG VWDU
SRLQW WKH HOLPLQDWLRQ RI WKH ]HUR VHTXHQFH FXUUHQW
PD\ EH VHW LQHIIHFWLYH ,R +$1'/( :,7+287SUR
YLGHG WKH VWDUSRLQW RI WKH SURWHFWHG WUDQVIRUPHU
ZLQGLQJ LV KDV QR FRQQHFWLRQ WR HDUWK
 QRW HYHQ YLD
WKH 3HWHUVHQ FRLO ,Q WKLV FDVH HDFK HDUWK IDXOW RU
GRXEOH HDUWK IDXOW ZLWK RQH IRRWSRLQW LQ WKH SUR
WHFWHG ]RQH ZLOO EH FOHDUHG E\ WKH UHOD\ UHJDUGOHVV RI
DQ\ GRXEOH HDUWK IDXOW SULRULW\ LI WKLV LV XVHG LQ QRQ
HDUWKHG V\VWHPV
,Q HDUWKHG
V\VWHPV WKH ]HUR VHTXHQFH FXUUHQW PXVW
EH HOLPLQDWHG IRU DOO ZLQGLQJV ZKRVH VWDUSRLQW LV
HDUWKHG LQ WKH SURWHFWHG ]RQH HYHQ LI DQ DUWLILFLDO
VWDUSRLQW FRLOLV XVHG ,QFUHDVHG HDUWK IDXOW VHQVLWLY
LW\ FDQ WKHQ EH DFKLHYHG RQO\ ZKHQ WKH VWDUSRLQW
FXUUHQW LV DYDLODEOH LH ZKHQ D FXUUHQW WUDQVIRUPHU
LV LQVWDOOHG LQ WKH HDUWKLQJ OHDG EHWZHHQ WKH ZLQGLQJ
VWDUSRLQW DQG HDUWK )LJXUH  VKRZV DQ H[DPSOH
IRU D WZRZLQGLQJ WUDQVIRUPHU 87 PXVW EH XVHG
HYHQ ZKHQ WKH WUDQVIRUPHU KDV RQO\ WZR ZLQGLQJV
VLQFH 87 GRHV QRW SURYLGH FXUUHQW LQSXWV IRU WKH
VWDUSRLQW FXUUHQW
,
6W
)LJXUH  (DUWK IDXOW RXWVLGH WKH SURWHFWHG
]RQH
,Q RUGHU WR DOORZ SURFHVVLQJ RI WKH VWDUSRLQW FXUUHQW
RQH RI WKH DGGLWLRQDO FXUUHQW LQSXWV ,
$
RU ,
%
RI 87
FDQ EH XVHG UHIHU WR 6HFWLRQ  DGGUHVVHV 
RU  ,I WKH PRGHO ZLWK WDQN OHDNDJH SURWHFWLRQ LV
XVHG WKHQ FXUUHQW LQSXW ,
$
PXVW EH DVVLJQHG IRU ]HUR
VHTXHQFH FXUUHQW FRUUHFWLRQ EHFDXVH WKH LQSXW ,
%
LV
WKHQ GHVLJQHG IRU WKH KLJKO\ VHQVLWLYH WDQN OHDNDJH
SURWHFWLRQ
www . ElectricalPartManuals . com