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Total Access 3000/3010 4-Pair Line Power Unit Installation and Maintenance Practice
4 61181500L2-5B
CAUTION
Per GR-1089-CORE the Total Access 3000/3010 System is
designed and intended for installation as part of a Common
Bonding Network (CBN). The Total Access 3000/3010 System is
not designed nor intended for installation as part of an Isolated
Bonding Network (IBN).
CAUTION
Per GR-1089-CORE Section 9, the LPU does not have an internal
DC connection between –48 VR and frame ground. The LPU can be
installed in a DC-I (isolated) or DC-C (common) installation. For
installations where other cards or the host system have internal
connections between –48 VR and frame ground, the system would
be intended for deployment only in a DC-C installation.
CAUTION
The Total Access 3000/3010 Chassis frame ground terminal must
be connected to an earth ground to ensure that the front panel of
the LPU is properly grounded via the backplane connector.
NOTE
The powering ports of the LPU are classified as Type 1, 3, and 5, as
defined in Appendix B of GR-1089-CORE Issue 4, and meet the
lightning and power fault criteria with primary protectors that meet
any of the voltage limits of GR-974-CORE or GR-1361-CORE (for
example, carbon blocks, gas tubes, solid states).
NOTE
Current limiting protectors are not required.
NOTE
The LPU is designed to operate with a nominal operating voltage of
–48 VDC and a minimum operating voltage of –40 VDC. The LPU
will not be damaged by any steady state voltage below –56.7 VDC.