26
Chapter 2: Server Installation
Note:
The SYS-110P-FDWTR-NEBS-DC is DC-I and can be grounded in both CBN and IBN
networks. It is suitable for installation in Network Telecommunication Facilities and in locations
where the NEC applies. Connection of the +Return (BR) supports both North America, Isolated
GP (single point connection to CBN) and Europe, Integrated GP (Multiple point connection
to CBN) configurations. DC power source must meet TNV-2 requirements as defined by UL
60950-1 and IEC 60950-1.
Chassis Ground Stud connections for AC and DC systems
Both the AC and DC server products will include a chassis ground terminal as part of the
chassis. This terminal is identified with the IEC 60417 #5019 Protective Earth Symbol. This
equipment is designed to connect to the Common Bonding Network (CBN) of the facility in
which it is installed.
Figure 2-6. Chassis Ground Studs (Earth Ground)
The Chassis ground connection should use a single 8AWG conductor with a cable insulation
color of Green/Yellow. Multiple conductors are not allowed per attachment point. A standard
ring terminal is recommended for the connection to the GND stud.
The connection to the Chassis Ground stud must establish metal to metal contact. Paint
and other non-conductive coatings shall be removed on the surfaces between the mounting
hardware. The surfaces shall be cleaned and an anti-oxidant shall be applied before being
joined.
Prior to making crimp connections, coat all bare conductors with an appropriate anti-oxidant
compound. Bring the ground terminal and connecting hardware to a bright finish and coat
with an anti-oxidant before making a connection.
Do not mix copper and aluminum conductors (or other dissimilar metals) in the same
terminal. Use lugs rated for copper if using copper conductors, and aluminum rated
lugs if using aluminum conductors