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Installing Hardware and Configuring Connectivity
Equipment Grounding Requirements
AC-powered MPS systems are safety grounded by the power cords; however, Avaya recommends
the addition of external cabinet grounding.
DC powered systems are not connected to the cabinet frame and you must install additional safety
grounding.
Note:
Avaya recommends that you use, at minimum, #12 AWG wire and an approved connector to the
10-32" copper grounding studs (one of four studs for 52" cabinet). The wire must be 2 meters or
less, where possible, and connected to a point referenced to the Building Principal Ground.
The implementation of external cabinet grounding at your site is dictated by local safety regulations
and your specific requirements. Requirements can differ from country to country as well as from
locality to locality. Local regulations can require that only licensed electricians be permitted to
perform this function.
The user is responsible for providing the required regulatory information and qualified personnel to
install power supply wiring and grounding for the MPS 500.
Installing DC Power
The Power Distribution Unit (PDU) supplies redundant power to components in the MPS cabinet (for
example, IBM servers) that do not have their own redundant power supply.
DC PDU Input Terminal Block
Caution:
You must follow the marked polarity on the unit as the manufacturer can change the location
without notice.
Figure 20: Detail View of SC PDU Input Terminal Block
Each PDU in the MPS 500 requires two -48V DC power sources. The sources are combined in the
PDU to provide fault tolerance. Redundancy can only be provided when both sources are
Avaya Media Processing Server 500 Hardware Installation and Maintenance
36
Comments? infodev@avaya.com
October 2014
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