Rack And Cabinet Requirements - Cisco Nexus 7718 Hardware Installation Manual

Rack and Cabinet Requirements

Table 2: Circuit Requirements for 3-kW Power Supplies
Power Supply
AC Power Supplies
3-kW power supply
DC Power Supplies
3-kW power supply
Table 3: Circuit Requirements for 3.5-kW HVAC/HVDC Power Supplies
Power Supply
3.5-kW
HVAC/HVDC
power supply
Step 5
Plan the placement of the input power receptacles within reach of the power cables used for each power supply
(see the following table for the maximum distances).
Typically, power receptacles are placed on the rack with the switch. If the DC power source is further than
allowed by the DC power cables, you can install a power interface unit (PIU) in the rack with the switch and
connect that to the power source with other cabling.
Power Supply
All AC power supplies
HVAC/HVDC 3.5-kW power
supplies
DC 3-kW power supplies
Rack and Cabinet Requirements
You can install the following types of racks or cabinets for your switch:
• Standard perforated cabinets
Cisco Nexus 7718 Switch Site Preparation and Hardware Installation Guide
14
Number of
Circuits
(N77-AC-3.0KW) 1
(N77-DC-3.0KW) 1
Number of
Circuits
(N77-HV-3.5KW) 1
Maximum Distance Between Receptacle and Power Supply
12 feet (3.6 m)
14 feet (4.26 m)
Determined by the length of the power cord that you supply.
Preparing the Site
Requirement for Each Circuit
20 A at 110 VAC or 220 VAC
20A
Requirement for Each Circuit
20 A at 110 VAC, 210 VAC, 220/230 VAC
and 277 VAC or 20 A at 210 VDC, 220/240
VDC and 380 VDC
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