CANOGA PERKINS 9145EMP Network Interface Device Hardware - Manual (Page 5)

9145EMP Network Interface Device Hardware User’s Manual
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Surge Protection
The AC powered 9145EMP does not contain an internal Surge Protective Device. An external
Surge Protective Device (SPD) should be used at the AC input of the network equipment accor-
ding to facilities procedures and as defined by the National Electric Code (NEC).
Grounding
The 9145EMP AC & DC models are suitable for installation as part of the Common Bonding
Network (CBN).
The 9145EMP AC and DC are provided with a safety ground connection which is capable of
conducting any fault current likely to be imposed such as fault current from sources within the
chassis. For the DC model use an approved 18ga insulated wire connected to the terminal
block’s middle conductor. The plus and minus 48VDC conductors should be a minimum of 20ga.
The AC will be grounded via the ground conductor of the power cord and must be connected to
an earthed mains socket-outlet.
An electrical conducting path should exist between the 9145EMP chassis and the metal surface
of the enclosure or rack in which it is mounted or to a grounding conductor. Electrical continuity
should be provided by using thread-forming type mounting screws that remove any paint or non-
conductive coatings and establish a metal-to-metal contact. Any paint or other nonconductive
coatings should be removed on the surfaces between the mounting hardware and the enclosure
or rack. The surfaces should be cleaned and an antioxidant applied before installation.
Lightning Protection
The intra-building ports of the 9145EMP are suitable for connection to intrabuilding or unexposed
wiring or cabling only. The intra-building port(s) of the equipment or subassembly MUST NOT be
metallically connected to interfaces that connect to the OSP or its wiring. These interfaces are
designed for use as intra-building interfaces only (Type 2 or Type 4 ports as described in GR-
1089-CORE, Issue 4) and require isolation from the exposed OSP cabling. The addition of Pri-
mary Protectors is not sufficient protection in order to connect these interfaces metallically to
OSP wiring.
To protect the port against intra-building lightning surges, the RJ45 ports of 9145EMP are suita-
ble for connection to shielded intra-building cabling grounded at both ends.
ESD
The 9145EMP has been tested and passes the ESD requirements of Test level 4 for air and
contact discharges. However to protect the exposed components from electrostatic damage
when removing or replacing the small form-factor pluggable (SFP) optical modules requires the
proper use of static mitigation procedures such as properly wearing a wrist strap.