2 Site Preparation Guidelines for NS2100 Systems
This section describes power, environmental, and space considerations for an NS2100 system
at your site.
Modular Cabinet Power and I/O Cable Entry
Power and I/O cables can enter the NS2100 system from either the top or the bottom rear of the
modular cabinets, depending on how the cabinets are ordered from Hewlett Packard Enterprise
and the routing of the AC power feeds at the site. NS2100 system cabinets can be ordered with
the AC power cords for the PDUs exiting either:
•
Top: Power and I/O cables are routed from above the modular cabinet.
•
Bottom: Power and I/O cables are routed from below the modular cabinet
For information about modular cabinet power and cable options, refer to
Emergency Power-Off (EPO)
This section describes these EPO topics:
•
•
“EPO Requirement for NS2100 Systems” (page 38)
•
“EPO Requirement for HPE R5000 UPS” (page 38)
•
“EPO Requirement for HPE R12000/3 UPS” (page 38)
EPO Switches
EPO switches are required by local codes or other applicable regulations when computer
equipment contains batteries capable of supplying more than 750 volt-amperes (VA) for more
that five minutes. Systems that have these batteries also have internal EPO hardware for
connection to a site EPO switch or relay. In an emergency, activating the EPO switch or relay
removes power from all electrical equipment in the computer room (except that used for lighting
and fire-related sensors and alarms).
EPO Requirement for NS2100 Systems
NS2100 systems without an optional UPS (such as an HPE R5000 UPS) installed in the modular
cabinet do not contain batteries capable of supplying more than 750 volt-amperes (VA) for more
that five minutes, so they do not require connection to a site EPO switch.
EPO Requirement for HPE R5000 UPS
The rack-mounted HPE R5000 UPS is supported for a single-phase power configuration. The
UPS contains batteries, has an EPO circuit, and can be optionally installed in a modular cabinet.
For site EPO switches or relays, consult your Hewlett Packard Enterprise site preparation specialist
or electrical engineer regarding requirements.
If an EPO switch or relay connector is required for your site, contact your Hewlett Packard
Enterprise representative or see the
HPE UPS R5000 User Guide
at
EPO Requirement for HPE R12000/3 UPS
The rack-mounted HPE R12000/3, UPS is supported for a three-phase power configuration. This
UPS contains batteries, has a remote EPO (REPO) port, and can be optionally installed in a
38
Site Preparation Guidelines for NS2100 Systems
