Siemens 8DJ20

Description
'(6&5,37,21'-'-

8.3 Short-circuit/earth-fault indicators
$OOULQJPDLQIHHGHUVFDQoptionallyEHHTXLSSHGZLWKD
SKDVHVKRUWFLUFXLWRUHDUWKIDXOWLQGLFDWRU
&KDUDFWHULVWLFV
q )DFWRU\DVVHPEOHGLQFOXGLQJVHQVRUPRXQWHGRQ
ULQJPDLQFDEOHEXVKLQJ
q 2SWLFDOVLJQDOZKHQDSUHVHOHFWHGSLFNXSYDOXHLV
H[FHHGHG
q 'LVSOD\SDQHOZLWKGUDZDEOHKRXVLQJGHSHQGLQJRQ
WKHW\SH
q 6KRUWFLUFXLWSLFNXSYDOXHVHJRU
  $
q 2SWLRQHOHFWULFDOUHPRWHLQGLFDWLRQYLDFRQWDFWr
121&SDVVLQJFRQWDFW
Bild 11: ([DPSOH6KRUWFLUFXLWLQGLFDWRU$/3+$(WKH
VKRUWFLUFXLWLQGLFDWRUKDVUHVSRQGHGLQSKDVH/
Indicator type Reset Short-circuit current
6WDQGDUGYDOXHVIXUWKHUYDOXHV
DYDLODEOHRQUHTXHVW
$
Earth-fault current
6WDQGDUGYDOXHVIXUWKHUYDOXHV
DYDLODEOHRQUHTXHVW
$
Short-circuit indicatorPDNH+RUVWPDQQ
)XUKWHUW\SHVDQGRWKHUPDNHVDYDLODEOHRQUHTXHVW
2SWLRQ(OHFWULFDOUHPRWHLQGLFDWLRQSDVVLQJFRQWDFW
$/3+$0 PDQXDOO\  r
$/3+$( PDQXDOO\DXWRPDWLFDOO\DIWHURUK  r
*$00$ PDQXDOO\IROORZLQJWKHUHWXUQRIWKH
SRZHUVXSSO\DIWHURUK
 r
$/3+$DXWRPDWLFRQUHTXHVW PDQXDOO\E\SXVKEXWWRQUHPRWH
UHVHWE\DX[LOLDU\YROWDJH
DXWRPDWLFDOO\DIWHU K
&KDQJHRIFXUUHQW
 $}',} $
GHSHQGLQJRQWKHORDGFXUUHQW
DWW  PV
r
Earth-fault/short-circuit indicator
(.$H[WHUQDODX[LOLDU\YROWDJH$&
 9UHTXLUHG
IROORZLQJWKHUHWXUQRIWKHSRZHU
VXSSO\
 
'(/7$0 PDQXDOO\  
'(/7$( PDQXDOO\DXWRPDWLFDOO\DIWHURU K  
Earth-fault indicator
(.$ IROORZLQJWKHUHWXUQRIWKHSRZHU
VXSSO\
r 