AC Power Supplies
Enterasys S-Series Stand Alone (SSA) Hardware Installation Guide 1-3
AC Power Supplies
TwoACpowersupplymodels,whichyoumustorderseparately,areavailablefortheSSA:
•SSA‐AC‐PS‐625W
•SSA‐AC‐PS‐1000W
TheSSAACpowersuppliesautomaticallyadjusttotheinputvoltageandfrequency,which
allowsforaninputvoltageof100to240Vac,and afrequencybetween50
and60Hz.Seethe
operatingspecificationsinAppendix A,Specifications.Noadditionaladjustmentsarenecessary.
ForinstallationsinNorthAmerica,a15Amppowercordisrequired.See“PoweringUptheSSA”
onpage 2‐14formoredetails.
Youcaninstalluptotwopowersuppliesintherear
oftheSSAchassis.Twooperationalmodesof
powersupplyredundancyaresupported:
• Redundantmode,inwhichthepowermadeavailabletothesystemisequaltothemaximum
outputofthelowestratedsupply.Ifyouchoose tousetwopowersuppliesinaredundant
powerconfiguration,systempowerredundancy
isguaranteedifonesupplyislost.
• Non‐redundant,oradditive,mode,inwhichthecombinedoutputofbothsuppliesismade
availabletothesystem.Ifyouchoosetousetwopowersuppliesinanon‐redundantpower
configuration,thelossofasinglesupplymayresultin
asystemreset.
Thefollowingpowerconfigurationsaresupported:
•Redundant
– 625watts(2x625)
– 625watts(625+1000)
– 1000watts(2x1000)
•Non‐redundant(additive)
– 625watts(1x625)
– 1000watts(1x1000)
– 1250watts(2x625)
– 1625watts(1000+625)
– 2000watts(2x1000)
Formoreinformation,
see“InstallingthePowerSupplies”onpage 2‐13.Forinformationonthe
powersupplyLEDs,see“PowerSupplyLEDs”onpage 3‐5.
Fans
TheSSAusesthirteenindividual12Vfanstocoolthesystem.ThoughtheSSAfansarefield
replaceable,theyarenothotswappable.ForinformationonhowtoreplaceSSAfans,see
“ReplacingtheSSAFans”onpage 3‐7.
Micro-USB Port
Themicro‐USBportisintendedfordebugpurposesonly.