16.8 Closing the Circuit Breaker
Manual operation
3UHFRQGLWLRQV
q &LUFXLW EUHDNHU LQ 'GLVFRQQHFWHG 7WHVW RU
&FRQQHFWHG SRVLWLRQ
q 6SULQJ FKDUJHG
q )URQW GRRU FORVHG DQG ODWFKHG
q 3XVKURG WR RSHQ RU FORVH WKH FLUFXLW EUHDNHU PDQX
DOO\
7KH FRQWURO HOHPHQWV RI WKH FLUFXLWEUHDNHU DUH ORFDWHG
LQ WKH FHQWHU RI WKH IURQW GRRU
0DQXDO WULSSLQJ RI WKH FLUFXLW EUHDNHU LV DOZD\V SRVVL
EOH 0DQXDO FORVLQJ LV RQO\ SRVVLEOH LQ WKH 'LVFRQ
QHFW 7HVW RU &RQQHFWHG SRVLWLRQV
)LJ )URQW GRRU ZLWK ORFDWLRQ RI RSHUDWLRQ DFFHVV IRU
FORVLQJ DQG RSHQLQJ WKH FLUFXLW EUHDNHU ULJKW DQG
UHJDUGLQJ LQGLFDWRUV OHIW
Note: ,I WKHUH LV QR FRQWURO SRZHU ERWK WKH HOHFWULFDO
DQG WKH PHFKDQLFDO LQWHUORFNV DUH FORVHG ,I HOHFWULFDO
LQWHUORFNV KDYH EHHQ SURYLGHG WKH\ ZLOO EH LQRSHUDWLYH
LI FRQWURO SRZHU LV QRW DYDLODEOH ,Q WKLV FDVH PDQXDO
RSHUDWLRQV WKDW DUH QRUPDOO\ SUHYHQWHG E\ HOHFWULFDO
LQWHUORFNV ZLOO EH SRVVLEOH ,I FRQWURO SRZHU LV QRW DYDLO
DEOH EH VXUH WKDW PDQXDO RSHUDWLRQV KDYH EHHQ SURS
HUO\ DXWKRUL]HG EHIRUH WKH\ DUH SHUIRUPHG
Õ
(QVXUH WKDW WKH LQWHQGHG PDQXDO RSHUDWLRQV KDYH
EHHQ SURSHUO\ DXWKRUL]HG
Õ
,QVHUW WKH SXVKURG LQ WKH RSHQLQJ IRU FORVLQJ WKH FLU
FXLW EUHDNHU
6*,0
23(5$7,21 1;$,5 3 $16,
Õ
3XVK WKH URG DJDLQVW WKH FORVH SXVKEXWWRQ RQ WKH
FLUFXLW EUHDNHU
7KH FLUFXLW EUHDNHU FORVHV 7KH SRVLWLRQ LQGLFDWRU RI
WKH FLUFXLW EUHDNHU FKDQJHV IURP WKH 23(1 WR WKH
&/26(' SRVLWLRQ 7KH FORVLQJ VSULQJ LV DXWRPDWL
FDOO\ UHFKDUJHG DIWHU FORVLQJ LI FRQWURO SRZHU LV DYDLO
DEOH LI FLUFXLW EUHDNHU LV LQ 7HVW RU &RQQHFWHG
SRVLWLRQ 7KH RSHUDWLRQV FRXQWHU LV LQFUHDVHG E\
2SHUDWLRQ LQ 7HVW SRVLWLRQ RU 'LVFRQQHFWHG SRVLWLRQ
LV DOVR SRVVLEOH ZLWK IURQW GRRU RSHQHG ,Q WKLV FDVH
Õ
3UHVV &/26( SXVKEXWWRQ RQ WKH EUHDNHU IURQW
Electrical operation
3UHFRQGLWLRQV
q $. FLUFXLW EUHDNHU LQVHUWHG LQ VHFWLRQ
q &RQWURO SRZHU DYDLODEOH
q )URQW GRRU FORVHG DQG ODWFKHG LI FLUFXLW EUHDNHU LV LQ
&RQQHFWHG SRVLWLRQ
q ,I DSSOLFDEOH ORFDO RSHUDWLRQ HQDEOHG LQ 6,3527(&
ED\ FRQWUROOHU RU RWKHU UHPRWH FRQWURO V\VWHP
q &LUFXLW EUHDNHU LQ 7HVW RU &RQQHFWHG SRVLWLRQ
q &ORVLQJ VSULQJ FKDUJHG
Õ
&ORVH WKH FLUFXLW EUHDNHU HLWKHU ORFDOO\ WKURXJK WKH
6,3527(& ED\ FRQWUROOHU FRQWURO VZLWFK RU IURP
UHPRWH
7KH FLUFXLW EUHDNHU FORVHV 7KH SRVLWLRQ LQGLFDWRU RI
WKH FLUFXLW EUHDNHU FKDQJHV IURP WKH 23(1 WR WKH
&/26(' SRVLWLRQ
7KH FORVLQJ VSULQJ LV DXWRPDWLFDOO\ UHFKDUJHG DIWHU
FORVLQJ 7KH RSHUDWLRQV FRXQWHU LV LQFUHDVHG E\
Operation NXAIR P - ANSI