Eaton ATC-900 - Operational Flowcharts; Open Transition Flowcharts

IB140012EN For more information visit: www.eaton.com
Instructional Booklet
Effective: March 2021 Page 45
Operation and Maintenance Manual,
Automatic Transfer Switch Controller, ATC-900
Appendix C: Operational Flowcharts
• Open Delayed Transition (Contactor, MCCB, Power)
• Open In-Phase Transition (Contactor, Power)
• Closed Transition (Contactor, Power)
• The use of TDND, TDNR, TDED, and TDER timers.
Note: These flowcharts refer to “breaker” or “contactor.”
$7&RSHQGHOD\HGWUDQVLWLRQVHTXHQFHRIRSHUDWLRQIORZFKDUW
VRXUFHFRQILJXUHGDVSUHIHUUHGVRXUFH
<HV
1R
6RXUFHLVSRZHULQJWKHORDG
,V6RXUFHXQDYDLODEOH25LVWKHUHD
UHTXHVWIRUWUDQVIHU(QJLQH7HVW3ODQW
([HUFLVHU*R7R(PHUJHQF\WR6RXUFH"
'RHVQXPEHURIJHQHUDWRUV RU"
7'(6WLPHGHOD\H[SLUHV
,V6RXUFH
DYDLODEOH"
1R
<HV
7'1(WLPHGHOD\H[SLUHV
6HQGSUHWUDQVIHUVLJQDOLI6RXUFHLVDYDLODEOH$1'SUH
WUDQVIHULVFRQILJXUHGDFWXDWHSUHWUDQVIHUUHOD\
7'35(WLPHGHOD\H[SLUHV
2SHQ6RXUFHPDLQFRQWDFWV
DFWXDWH.UHOD\
6HQGSRVWWUDQVIHUVLJQDOLISRVWWUDQVIHUFRQILJXUHG
DFWXDWHSRVWWUDQVIHUUHOD\
1RWHWKHSRVWWUDQVIHUWLPHGHOD\ZLOOVWDUWWRFRXQWGRZQ
DIWHUWKH6RXUFHPDLQFRQWDFWVFORVH
7'1WLPHGHOD\H[SLUHV25/9'VDWLVILHG
ZKHQSURGXFWFRQILJXUDWLRQVXSSRUWVORDGGLVFRQQHFW
&ORVH6RXUFHPDLQFRQWDFWV
DFWXDWH.

.

UHOD\
6RXUFHLVSRZHULQJWKHORDG
3RVWWUDQVIHUWLPHGHOD\H[SLUHV
ZKHQSRVWWUDQVIHUFRQILJXUHG
,V6RXUFH
DYDLODEOH"
1R
<HV
7'(1WLPHGHOD\H[SLUHV
6HQGSUHWUDQVIHUVLJQDO
LISUHWUDQVIHUFRQILJXUHG
DFWXDWHSUHWUDQVIHUUHOD\
7'35(WLPHGHOD\H[SLUHV
2SHQ6RXUFHPDLQFRQWDFWV
DFWXDWH.UHOD\
6HQGSRVWWUDQVIHUVLJQDOLISRVWWUDQVIHUFRQILJXUHG
DFWXDWHSRVWWUDQVIHUUHOD\
1RWH3RVWWUDQVIHUWLPHGHOD\ZLOOVWDUWWRFRXQWGRZQ
DIWHUWKH6RXUFHPDLQFRQWDFWVFORVH
7'1WLPHGHOD\H[SLUHV25/9'VDWLVILHG
ZKHQSURGXFWFRQILJXUDWLRQVXSSRUWVORDGGLVFRQQHFW
&ORVH6RXUFHPDLQFRQWDFWV
DFWXDWH.

.

UHOD\
6RXUFHLVSRZHULQJORDG
'RHVQXPEHURIJHQHUDWRUV RU"
3RVWWUDQVIHUWLPH
GHOD\H[SLUHV
ZKHQSRVWWUDQVIHU
FRQILJXUHG
3RVWWUDQVIHUWLPH
GHOD\H[SLUHV
ZKHQSRVWWUDQVIHU
FRQILJXUHG
7'(&WLPHGHOD\H[SLUHV
5HPRYH³(QJLQH6WDUW´VLJQDO
GHDFWXDWHJHQVWDUWUHOD\
6HQG³(QJLQH6WDUW´VLJQDO
DFWXDWHJHQVWDUWUHOD\
1R
<HV
<HV
1R
1RWHV
DSSOLFDEOHIRUFRQWDFWRUW\SHDQGSRZHUIUDPHWUDQVIHUVZLWFKHVZLWKVXSSRUWIRUWLPHGHOD\LQORDGGLVFRQQHFW³QHXWUDO´SRVLWLRQ
DSSOLFDEOHIRUPROGHGFDVHW\SHWUDQVIHUVZLWFKHV