Dell S4100-ON Series Руководство по установке - Страница 18

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Cabinet placement

Install the S4100–ON Series (S4128F-ON, S4148F-ON, and S4148FE-ON) only in indoor cabinets designed for use in a controlled

environment.

Do not install the switch in outside cabinets. For cabinet placement requirements, see

The cabinet must meet minimum size requirements. Airflow must be in accordance with the Electronic Industries Alliance (EIA) standard.

Ensure that there is a minimum of 5 inches (12.7 cm) between the intake and exhaust vents and the cabinet wall.

When you prepare your equipment rack, ensure that the rack is grounded. Ground the equipment rack to the same ground point the power

service in your area uses. The ground path must be permanent.

Dell EMC recommends grounding your switch. Use the S4100–ON Series switch in a CBN.

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.

The fans on the S4100–ON Series (S4128F-ON, S4148F-ON, and S4148FE-ON) support two airflow options: normal and reverse.

Fan installation is done as part of the factory install based on SKU type. The S4100–ON Series has stock keeping units (SKUs) that support

the following configurations:

•

AC PSU with fan airflow from the I/O to the PSU—normal

•

AC PSU with fan airflow from the PSU to the I/O—reverse

•

DC fan unit with airflow from the I/O to the PSU—normal

•

DC fan unit with airflow from the PSU to the I/O—reverse

Be sure to order the fans suitable to support your site's ventilation. Use a single type of airflow fan in your switch. Do not mix reverse and

normal airflows in a single switch.

For proper ventilation, position the S4100–ON Series switch in an equipment rack or cabinet with a minimum of 5 inches (12.7 cm) of

clearance around the exhaust vents. The fan speed varies based on internal temperature monitoring. The switch never intentionally turns

off the fans.

For more information, see Fans.

Connect the switch to the applicable power source using the appropriate power cable. An AC power cable is included with each PSU.

When installing AC or DC switches, follow the requirements of the National Electrical Code ANSI/NFPA 70, where applicable.

The switch is powered-up when the power cable is connected between the switch and the power source.

Site preparations

Site

selection.