Dell S4248FB-ON Посібник з монтажу - Сторінка 16
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For your switch to be network equipment building system (NEBS) compliant, you must follow the instructions detailed in this section.
To be NEBS compliant, orient your switch in the rack so that the air inlet is from the front aisle and the air exhaust is to the back aisle.
Topics:
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Important information
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NEBS-compliant ground installation
Important information
WARNING:
The SFP+, QSFP, QSFP28, console, Ethernet management, and universal serial bus (USB) ports are suitable for
connection to intrabuilding or unexposed wiring or cabling only. You MUST NOT metallically connect the ports to interfaces that
connect to the out side plant (OSP) or its wiring. Use these interfaces as intrabuilding interfaces only (Type-2 or Type-4 ports as
described in GR-1089-CORE, Issue 6) and they require isolation from the exposed OSP cabling. Adding primary protectors is not
sufficient protection to connect these interfaces metallically to OSP wiring.
WARNING:
If you install and connect the S4200-ON Series (S4248FB-ON and S4248FBL-ON) switch to a commercial AC power
source, you must connect the switch to an external special protection device (SPD).
To be NEBs compliant:
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Locate your switch in a restricted-access area were only trained personnel are allowed access.
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Install and connect your switch to the common bonding network (CBN).
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You can also install and connect your switch to the central office.
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Connect the battery returns of your switch as DC-I.
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Ground your switch using a copper ground conductor.
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Clean and coat all bare grounding connection points on your switch with an antioxidant solution before making connections.
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Bring all unplated ground connection surfaces on your switch to a bright finish and treat them with an antioxidant solution before
making connections.
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To ensure electrical continuity, remove any nonconductive surfaces on your switch from the ground connection points and threaded
holes used to secure the ground lugs.
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Use the two-hole, Listed, compression-type lug with an AWG 14 gauge wire for switch grounding.
NOTE:
The S4200-ON Series can operate at -40.5 VDC to -60 VDC at a maximum current level of 15A.
NOTE:
The S4200-ON Series is Earthquake Z4-compliant when you attach the ReadyRails to the frame using threaded
hardware. Do not use tool-less installation method.
NEBS-compliant ground installation
Before you install the switch into a rack, install the ground (GND) lug assembly.
Your switch includes an assembled UL-certified GND lug with bracket, packaged separately. If any parts are missing, contact your Dell EMC
sales representative.
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NEBS compliance
NEBS compliance
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