Liebert 50, S3, 60 Hz User Manual

OWER PROTECTION

P

UPStation® S3

Three Phase
12 kVA to 24 kVA; 50 and 60 Hz

User

Manual

MPORTANT SAFETY INSTRUCTIONS

I

TABLE OF CONTENTS

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1

1.0 I

NTRODUCTION

ìïì 'HVFULSWLRQ эпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэ к

ìïë 6LWHэ3ODQQLQJэ'DWD пэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэ к

ìïê 836э&DELQHW пэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэ к

мпкпм &DVWHUVэDQGэ)HHW эпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэ к
мпкпл &RROLQJ эпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэ к
мпкпк $FFHVVэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэ к

ìïé 6\VWHPэ&RPSRQHQWV пэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэ й

мпйпм 6WDQGDUGэ836э8QLWэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэ й
мпйпл 2SWLRQVэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэ й

ìïè 0RGHVэRIэ2SHUDWLRQпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэ и

мпипм 1RUPDOэх8WLOLW\э3RZHUф эпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэ и
мпипл 2Qэ%DWWHU\ эпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэ и
мпипк %DWWHU\э5HFKDUJH пэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэ и
мпипй 2Qэ%\SDVVпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэ и
мпипи 5HPRWHэ(PHUJHQF\э2II эпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэ и

2.0 I

NSTALLATION

ëïì 6DIHW\э3UHFDXWLRQVэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэ з

ëïë 836э,QVWDOODWLRQ пэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэ ж

лплпм ,QVWDOODWLRQэ&RQVLGHUDWLRQV пэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэ е
лплпл 8QORDGLQJэDQGэ([WHUQDOэ,QVSHFWLRQ эпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэ е
лплпк ,QWHUQDOэ,QVSHFWLRQэRIэWKHэ836э6\VWHP эпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэ е
лплпй (TXLSPHQWэ/RFDWLRQээпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэ д

ëïê %DWWHULHV эпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэ д

ëïé (OHFWULFDOэ:LULQJпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэ мм

лпйпм 836э:LUHэ6L]Hэ*XLGHOLQHV пэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэ мм
лпйпл 3RZHUэчэ&RQWUROэ:LULQJэ пэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэ мл
лпйпк %DWWHU\э:LULQJ пэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэ мк
лпйпй :LULQJэ&RQQHFWLRQV эпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэ мй
лпйпи :LULQJэ,QVSHFWLRQ пэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэ мй

3.0 O

PERATION

êïì &RQWUROэоэ'LVSOD\э3DQHO эпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэ кд

кпмпм &RQWUROэ%XWWRQV эпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэ кд
кпмпл /&'э'LVSOD\ пэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэ йн

êïë 6\VWHPэ6WDUWр8S пэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэ йй

кплпм ,QLWLDOэ6WDUWр8S эпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэ йй
кплпл 0DQXDOэ5HVWDUWэDIWHUэ0DQXDOэ2II пэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэ йй
кплпк 0DQXDOэ5HVWDUWэDIWHUэ/RZэ%DWWHU\э6KXWGRZQэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэ йй
кплпй 0DQXDOэ5HVWDUWэDIWHUэ(32эRUэ5(32 пэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэ йй
кплпи $XWRр5HVWDUW пэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэ йй

êïê 1RUPDOэ2SHUDWLRQпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэ йй

i

êïé %DWWHU\э2SHUDWLRQпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэ йи

кпйпм 2Qэ%DWWHU\ эпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэйи
кпйпл %DWWHU\э5HFKDUJH эпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэйи

êïè %\SDVVэ2SHUDWLRQ пэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэ йз

кпипм 6WDWLFэ7UDQVIHUэ6ZLWFKэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэ йз
кпипл 0DLQWHQDQFHэ%\SDVVпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэ йе

êïç 6\VWHPэ6KXWGRZQпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэ йе

кпзпм 0DQXDOэ2II эпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэ йе
кпзпл $XWRPDWLFэ2IIэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэйе
кпзпк 5HPRWHэ(PHUJHQF\э2II пэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэйе

êïæ 8VHUэ5HVSRQVHэWRэ836э$ODUPV эпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэ ин

4.0 F

EATURES

& O

PTIONS

éïì ,QWURGXFWL RQ эпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэ пэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэ из

éïë 56рлклэ&RPPXQLFDWLRQэ)HDWXUH пэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэ из

éïê )DFWRU\э,QVWDOOHGэ2SWLRQV эпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэ пэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэ иж

йпкпм 'XDOэ,QSXW пэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэиж
йпкпл кшэ,QSXWэ&XUUHQWэ7+' эпэпэпэпэпэпэпэпэпэпэпэп эпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэиж
йпкпк ,VRODWHGэ1HXWUDOэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэ иж
йпкпй 7UDQVIRUPHUэ&DELQHW эпэпэпэпэпэпэпэпэпэпэ пэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэиж
йпкпи 2XWSXWэ'LVWULEXWLRQэ3DQHO пэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэ ие
йпкпз %DWWHU\э&DELQHWVпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэп эпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэ пэпэ ие

éïé )LHOGэ,QVWDOODEOHэ2SWLRQVэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэ ие

йпйпм ([WHUQDOэ%DWWHU\э&DELQHWV пэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэп эпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэпэие
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1

Table 1 Site Planning Data

Dual AC Input

Single

Power

Model

S312 12 8.4 208

S316 16 11.2 208

S320 20 14 208

S324 24 16.8 208

Appli­cable
Notes:

For explanation of
REOP = Recommended External Overcurrent Protection

*Dimensions, Weights, and Heat Dissipation for 400, 480, and 600 VAC models

Volt-

Rating

age

VAC

240
400
480
600

240
400
480
600

240
400
480
600

240
400
480
600

——123,9

Applicable Notes,

AC Input

(Amp)

Nom Max REOP Nom Max REOP Nom REOP Nom REOP

33

40

50

29

35

17

21

14

18

12

14
54

44

46

38

28

23

23

19

19

15

67

56

58

48

35

29

29

24

23

19
67

80

58

70

35

42

29

35

23

28

28

50

24

30

15

30

13

20

10
37

70

32

60

20

40

16

30

13

30

46

100

39

70

25

50

21

40

16

30

100

55

100

47

60

29

50

24

40

20

123,9
10
11
13
14

see referenced numbers in

(Amp)

Converter Bypass

35

50
40
30
20
15

60
50
30
30
20

70
60
40
40
30

100

80
50
40
30

10
11
13
14

33
29
17
14
12

44
38
23
19
15

56
48
29
24
19

67

100
58
35
29
23

13,9

Notes

30
19
16
13

46
39
25
21
16

58
49
31
26
21

69
59
37
31
24

50
40
30
20
15

60
50
30
30
20

80
70
40
30
30

80
50
40
30

10
11
13
14

below.

Battery

Nom-

inal

Full

Volt-

Load

age

kW

240 9.9 51 33

240 13.2 67 44

240 16.5 84 56

240 19.8 101 67

5—6,9

Notes

1. Nominal (NOM) current is based on full rated output load.

2. Maximum (MAX) current includes the short duration for battery recharge conditions.

3. UPS input cables must be run in separate conduit from output cables.

4. Reserved.

5. Nominal battery voltage is shown at 2.0 volts/cell per NEC 480-2.

6. Power cables from UPS DC link to batteries should be sized for a total maximum 2.0 volt line drop (measured at UPS) at maximum discharge current.

7. Recommended AC output overcurrent protection represents 125% of nominal full load current (continuous) per NEC 220-3(a).

8. UPS output load cables must be run in separate conduit from input cables.

9. Minimum sized grounding conductors to be per NEC 250-95. Parity sized ground conductors are recommended. Neutral conductors to be sized for full
capacity per NEC 310-16 Note 10.

10. Wiring requirements:
AC Output: 3-phase, 4-wire plus ground
DC Input: 2-wire (positive and negative) plus ground
Single Source AC Input: 3-phase, 4-wire plus ground
Dual Source AC Input:

Converter Input: 3-phase, 3-wire plus ground

11. All wiring is to be in accordance with national and local electrical codes.

12. Minimum access clearance is 3 feet front and 1 foot above the UPS.

13. Top or bottom cable entry through removable access plates. Cut plate to suit conduit size, then replace.

Bypass Input: 3-phase, 4-wire plus ground

Max.

Dis-

charge

Cur-

rent

10,11
13,14

AC Output

(Amp)

Current

50

29

40

17

30

14

20

12

15
60

50

38

30

23

30

19

20

15

80
70

48

40

29

30

24

30

19

100

58

80

35

50

29

40

23

30

17,8,9

10
11
13
14

Mechanical Data

Dimen-

sions

WxDxH

inches (cm)

29x27.25x62
(74x69x157)

*41x27.25x62

*(104x69x157)

29x27.25x62
(74x69x157)

*41x27.25x62

*(104x69x157)

29x27.25x62
(74x69x157)

*41x27.25x62

*(104x69x157)

29x27.25x62
(74x69x157)

*41x27.25x62

*(104x69x157)

12,13,14,15 15 — —

lbs (kg)

Weight

700

(318)
*1250
*(567)

700

(318)
*1250
*(567)

700

(318)
*1250
*(567)

700

(318)
*1250
*(567)

Heat

Dis-

sipa-

tion

BTU/

hr.

4000

*4700

5300

*6300

6500

*7800

7200

*8500

Cooling

Air

CFMkVA kW

1000

1000

1000

1000

Additional Notes

1. If site configuration includes a back-up emergency generator, it is recommended that the engine generator set be properly sized and equipped for a UPS
application. Generator options would typically include an isochronous governor (generator frequency regulation) and a UPS compatible regulator
(generator voltage regulation). Consult generator manufacturer for required generator options and sizing.

2. If site configuration includes an automatic transfer switch, refer to the Liebert Power Line titled “Criteria for Application of Automatic Transfer Switches
(ATS) with Uninterruptible Power Supply (UPS) Systems” 91K-PLT-48-02. It is also recommended that the transfer switch be equipped with auxiliary
contacts. Consult transfer switch manufacturer for required transfer switch options and sizing.

2

1.0 I

NTRODUCTION

1.1 Description

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1.2 Site Planning Data

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1.3 UPS Cabinet

1.3.1 Casters and Feet

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1.3.2 Cooling

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1.3.3 Access

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Introduction 3

1.4 System Components

1.4.1 Standard UPS Unit

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4 Introduction

1.5 Modes of Operation

1.5.1 Normal (Utility Power)

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1.5.2 On Battery

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1.5.3 Battery Recharge

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1.5.4 On Bypass

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1.5.5 Remote Emergency Off

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Introduction 5

2.0 I

NSTALLATION

2.1 Safety Precautions

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6 Installation

2.2 UPS Installation

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Installation 7

2.2.1 Installation Considerations

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8 Installation

2.2.4 Equipment Location

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Installation 9

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10 Installation

2.4 Electrical Wiring

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2.4.1 UPS Wire Size Guidelines

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Installation 11

2.4.2 Power & Control Wiring

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12 Installation

2.4.3 Battery Wiring

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Installation 13

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14 Installation

Table 2 Table 310-16

Allowable Ampacities of Insulated Conductors Rated 0-2000 Volts, 60° to 90°C (140° to 194°F)

Not More than Three Conductors in Raceway or Cable or Earth (Directly Buried), based on Ambient Temperature of 30° (86°F)

Size Temperature Rating of Conductor. See Table 310-13. Size

AWG
kcmil

60°C

(140°F)

Types

TW†

UF†

75°C

(167°F)

Types

FEPW+,

RH,RHW†,

THHW†,

THW†,
THWN†,
XHHW†,

USE†, ZW†

90°C

(194°F)

Types

TBS, SA,
SIS,FEP†,
FEPB†,MI,

RHH†, RHW-2

THHN†,THHW†,

THW-2,THWN-2,

USE-2, XHH,

XHHW†

XHHW-2,ZW-2

60°C

(140°F)

Types

TW†

UF†

75°C

(167°F)

Types

RH†, RHW†,

THHW†,

THW†,
THWN†,
XHHW†,

USE†

THHW†,

THW-2, THWN-2,

RHH†, RHW-2,

XHH, XHHW†,

XHHW-2, ZW-2

90°C

(194°F)

Types

TBS,
SA,SIS,
THHN†,

USE-2,

1

Copper Aluminum or Copper-Clad Aluminum

18
16
14
12
10

8
6

4
3
2
1

1/0
2/0
3/0
4/0

250
300
350
400
500

600
700
750
800
900

1000
1250
1500
1750
2000

.......

.......

20†
25†

30
40

55
70
85
95

110
125

145
165
195

215
240
260
280
320

355
385
400
410
435

455
495
520
545
560

.......

.......

20†
25†
35†

50
65

85
100
115
130

150
175
200
230

255
285
310
335
380

420
460
475
490
520

545
590
625
650
665

14

18
25†
30†
40†

55

75

95
110
130
150

170
195
225
260

290
320
350
380
430

475
520
535
555
585

615
665
705
735
750

.......

.......

.......

20†

25
30

40
55
65
75
85

100
115
130
150

170
190
210
225
260

285
310
320
330
355

375
405
435
455
470

.......

.......

.......

20†
30†

40
50

65
75
90

100
120

135
155
180

205
230
250
270
310

340
375
385
395
425

445
485
520
545
560

.......

.......

.......

25†
35†

45
60

75

85
100
115

135
150
175
205

230
255
280
305
350

385
420
435
450
480

500
545
585
615
630

AWG
kcmil

.......

.......

.......

12
10

8
6

4
3
2
1

1/0
2/0
3/0
4/0

250
300
350
400
500

600
700
750
800
900

1000
1250
1500
1750
2000

Correction Factors

Ambient

Temp °C

21-25
26-30
31-35
36-40
41-45
46-50
51-55
56-60
61-70
71-80

† Unless otherwise specifically permitted elsewhere in this Code, the overcurrent protection for conductor types marked with an
obelisk (†) shall not exceed 15 amperes for No. 14, 20 amperes for No. 12, and 30 amperes for No. 10 copper; or 15 amperes for
No. 12 and 25 amperes for No. 10 aluminum and copper-clad aluminum after any correction factors for ambient temperature and
number of conductors have been applied.

1

Reprinted with permission from NFPA 70-1993, the National Electrical Code®, Copyright 1996, National Fire Protection Association,
Quincy, MA 02269. This reprinted material is not the complete and official position of the National Fire Protection Association, on the
referenced subject which is represented only by the standard in its entirety.

For ambient temperatures other than 30°C (86°F), multiply the allowable ampacities shown

1.08

1.00
.91
.82
.71
.58
.41

.......

.......

.......

1.05

1.00
.94
.88
.82
.75
.67
.58
.33

.......

above by the appr opriate factor shown be low.

1.04

1.00
.96
.91
.87
.82
.76
.71
.58
.41

1.08

1.00
.91
.82
.71
.58
.41

.......

.......

.......

1.05

1.00
.94
.88
.82
.75
.67
.58
.33

.......

1.04

1.00
.96
.91
.87
.82
.76
.71
.58
.41

Ambient
Temp °F

70-77
78-86
87-95

96-104
105-113
114-122
123-131
132-140
141-158
159-176

Installation 15

Table 3 UPS Module Power Wiring Termination - Factory Supplied

Connectio n Type / Wire Size Range

UPS Module

Rating

kVA

12 - 24 Compression

Use factory supplied connections for terminations where they are provided. Refer to
supplied wiring termination details. Use commercially available UL listed solderless lugs for the wire size
required for your application. Connect wire to the lug using tool and procedure specified by the lug
manufacturer.

AC Input Battery AC Output Neutral Ground

lug

#14 to #2/0

Studs

3/8 - 16 x 2

Lugs Requi red

Compression

lug

#14 to #2/0

Compression

lug

#14 to #2/0

Figure 19

Copper Busbar

3.75 x 3.75 x

for field-

Table 4 Torque Specifications (Unless Otherwise Labeled)

Nut and Bolt Combinations

Grade 2

Bolt Shaft Size

Inches

1/4 70 8.0 46 5.2

5/16 132 15 60 6.8

3/8 229 26 95 10.7
1/2 476 54 256 28.9

Standard

Lb-in N-m Lb-in N-m

Electrical C on ne c tio n s

with Belleville Washers

0.25

Terminal Block Compression Lugs

UPS Module

Rating

kVA

12 - 24 Control #22 - #14 3.5 to 5.3 0.4 to 0.6
12 - 24 Power #6 - 350 MCM 50 5.6

Wiring

Wire Size or

Range

Lb-in N-m

16 Installation