Extron electronic PS 124 Power Supply User Manual


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PS 124 12 VDC, 4 Amp Power Supply • Installation Manual
9
Installing the PS 124
ThereareseveraloptionalaccessoriesformountingthePS124.
TheyincludethefollowingExtronpartnumbers:
• RSU1291U9.5"DeepUniversalRackShelf
(part#60-190-01)
• RSB1291U9.5"DeepBasicRackShelf
(part#60-604-01)
• MBU1251UUnder-DeskMounting
(part#70-077-01)
• PMK350LowProlePoleMountKitforMultipleProducts
(part#70-563-03)
AdditionalmountingoptionsmaybefoundontheExtron
website at www.extron.com
UL rack mounting guidelines
ThefollowingUnderwritersLaboratories(UL)guidelines
pertaintotheinstallationofthePS124intoarack.
• Elevated operating ambient temperature — If the
equipmentisinstalledinaclosedormultiunitrack
assembly, the operating ambient temperature of the
rackenvironmentmaybegreaterthanroomambient
temperature.
Therefore, consider installing the equipment in an
environmentcompatiblewiththemaximumambient
temperature(Tma)speciedbythemanufacturer.Forthe
PS124,theTmais122°F(50°C).
• Reduced air flow—Installationoftheequipmentinarack
should be such that the amount of air flow required for
safe operation of the equipment is not compromised.
• Mechanical loading—Mountingoftheequipmentin
therackshouldbesuchthatahazardousconditionisnot
created due to uneven mechanical loading.
• Circuit overloading — Consideration should be given to
the connection of the equipment to the supply circuit and
the effect that overloading of the circuits might have on
overcurrent protection and supply wiring. Appropriate
consideration of equipment nameplate ratings should be
used when addressing this concern.
• Reliable earthing (grounding) — Reliable earthing
ofrack-mountedequipmentshouldbemaintained.
Particularattentionshouldbegiventosupplyconnections
other than direct connections to the branch circuit (e.g. use
of power strips.
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