Dell S5148F-ON EMC PowerSwitch Installation Guide July 2021 - Page 25

Ground cable, Optics installation

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NOTE: Do not the use the mounted ReadyRails as a shelf or a workplace. 3. Tighten the two thumb screws and rack screws. To remove the switch from the rack or cabinet, press in the two side-release bars on the switch at the same time and slide the switch forward. Ground cable NOTE: For AC-powered switches, although the third conductor of the AC power cord provides a ground path, Dell EMC recommends grounding your switch with a dedicated ground wire. NOTE: For DC-powered switches, the only way to safely ground your switch is to attach a dedicated ground wire. Depending on the type of switch, to attach a ground cable to the switch, you need M3 or M4 screws. The switch ships with one of the following two configurations: ● One threaded hole using an M3 screw. ● Two threaded holes using one of the two M4 screws. In both configurations, the ground cable is not included. To properly ground the switch, Dell EMC recommends a one- or two-hole lug, M3 or M4 hole size. The grounding lugs must be a UL-recognized, crimp-type lug. CAUTION: Grounding conductors must be made of copper. Do not use aluminum conductors. NOTE: Coat the one-hole lug with an anti-oxidant compound before crimping. Also, bring any unplated mating surfaces to a shiny finish and coat with an anti-oxidant before mating. Plated mating surfaces must be clean and free from contamination. To connect the ground cable to the switch, follow these steps: 1. Cut your ground cable (not included) to the desired length. The cable length must facilitate proper operation of the fault interrupt circuits. Use the shortest cable route allowable. 2. To attach the ground cable, use one of the following: ● Using one threaded M3 hole, attached the ground cable to the lug using an M3 screw with a captive internal tooth lock washer. Torque the screw to ±4-5 in-lbs. ● Using one of the two M4 threaded holes, attach the ground cable to the lug. Use an M4 screw with a captive internal tooth lock washer. Torque the screw to ±5-6 in-lbs. 3. Attach the other end of the ground cable to a suitable ground point such as the rack or cabinet. The rack installation ears are not a suitable grounding point. Optics installation The S5148F-ON switch has SFP28 and QSFP28 optical ports. For a list of supported optics, see the specification sheets at www.dell.com/support or contact your Dell EMC Sales representative. CAUTION: ESD damage can occur if components are mishandled. Always wear an ESD-preventive wrist or heel ground strap when handling the S5148F-ON switch and components. WARNING: When working with optical fibers, follow all warning labels and always wear eye protection. Never look directly into the end of a terminated or unterminated fiber or connector as it may cause eye damage. 1. Position the optic to enter the port correctly. The optic has a key that prevents it from being inserted incorrectly. 2. Insert the optic into the port until it gently snaps into place. NOTE: When you cable the ports, be sure not to interfere with the airflow from the small vent holes above and below the ports. S5148F-ON switch installation 25

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NOTE:
Do not the use the mounted ReadyRails as a shelf or a workplace.
3.
Tighten the two thumb screws and rack screws.
To remove the switch from the rack or cabinet, press in the two side-release bars on the switch at the same time and slide the
switch forward.
Ground cable
NOTE:
For AC-powered switches, although the third conductor of the AC power cord provides a ground path, Dell EMC
recommends grounding your switch with a dedicated ground wire.
NOTE:
For DC-powered switches, the only way to safely ground your switch is to attach a dedicated ground wire.
Depending on the type of switch, to attach a ground cable to the switch, you need M3 or M4 screws. The switch ships with one
of the following two configurations:
●
One threaded hole using an M3 screw.
●
Two threaded holes using one of the two M4 screws.
In both configurations, the ground cable is not included. To properly ground the switch, Dell EMC recommends a one- or
two-hole lug, M3 or M4 hole size. The grounding lugs must be a UL-recognized, crimp-type lug.
CAUTION:
Grounding conductors
must
be made of copper. Do not use aluminum conductors.
NOTE:
Coat the one-hole lug with an anti-oxidant compound before crimping. Also, bring any unplated mating surfaces to a
shiny finish and coat with an anti-oxidant before mating. Plated mating surfaces must be clean and free from contamination.
To connect the ground cable to the switch, follow these steps:
1.
Cut your ground cable (not included) to the desired length. The cable length must facilitate proper operation of the fault
interrupt circuits. Use the shortest cable route allowable.
2.
To attach the ground cable, use one of the following:
●
Using one threaded M3 hole, attached the ground cable to the lug using an M3 screw with a captive internal tooth lock
washer. Torque the screw to ±4-5 in-lbs.
●
Using one of the two M4 threaded holes, attach the ground cable to the lug. Use an M4 screw with a captive internal
tooth lock washer. Torque the screw to ±5-6 in-lbs.
3.
Attach the other end of the ground cable to a suitable ground point such as the rack or cabinet.
The rack installation ears are not a suitable grounding point.
Optics installation
The S5148F-ON switch has SFP28 and QSFP28 optical ports.
For a list of supported optics, see the specification sheets at
www.dell.com/support
or contact your Dell EMC Sales
representative.
CAUTION:
ESD damage can occur if components are mishandled. Always wear an ESD-preventive wrist or heel
ground strap when handling the S5148F-ON switch and components.
WARNING:
When working with optical fibers, follow all warning labels and always wear eye protection. Never
look directly into the end of a terminated or unterminated fiber or connector as it may cause eye damage.
1.
Position the optic to enter the port correctly.
The optic has a key that prevents it from being inserted incorrectly.
2.
Insert the optic into the port until it gently snaps into place.
NOTE:
When you cable the ports, be sure not to interfere with the airflow from the small vent holes above and below
the ports.
S5148F-ON switch installation
25