Installation Instructions

R20 1X UBS Macro B T S Hardw are Installation Adding Circuit Break ers/Connectors to PDU
Adding Circuit Breakers/Connectors to PDU
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Objective
The objective of this section is to install additional circuit breaker/output power connector
assemblies in the PDU . These additional circuit breaker/output power connector assemblies are
required to allow the PDU to provide DC power to the expansion equipment being added to
the UBS Macro BTS frame.
The circuit breaker/output power connector assemblies are located on the PDU front panel.
Each circuit breaker/output power connector assembly is arranged so that the circuit breaker
is just below the corresponding DC output power connector .
The PDU can be equipped with the following circuit breaker/output power connector assemblies:
• up to four 90A for XMI 1 – XMI 4
• up to five 20A for DMI 1 – DMI 5
• up to two 20A for S SI 1 – S SI 2
• up to two 10A for accessory groups ACC 1 – ACC 2
The PDU in the UBS Macro BTS low -capacity starter/expansion frame is already equipped with
the following circuit breaker/output power connector assemblies:
• one 90A for XMI 1
• two 20A for DMI 1 – DMI 2
• one 20A for S SI 1
• zero 10A for no accessories
The type and quantity of circuit breaker/output power connector assemblies required depends
on which circuit breaker/output power connector assemblies are not already equipped in the
PDU , but are needed to support the additional expansion equipment.
Required items
The following items are required:
• Appropriate type and quantity of circuit breaker/output power connector assemblies to
be added for expansion purposes
90A circuit breaker/output power connector assembly (Motorola model STLN4093)
20A circuit breaker/output power connector assembly (Motorola model STLN6472)
68P09283A62 -2 3 -3
PRELIMINARY A UG 2007