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Installing Power Failure Transfer Units
Contents
PFTU configurations
This chapter contains information about the following topics:
PFTU configurations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Installing a PFTU . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Connecting trunks and telephones. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Installing QUA6 PFTUs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
In AC-powered systems, Power Fail Transfer Units (PFTU) are powered by
the A0367916 Auxiliary -48 V Power Supply (up to six PFTUs can be
supported by one power supply). In DC-powered systems, PFTUs are
powered from an auxiliary -48 V DC fused output from the external power
equipment.
Figure 61 shows a high-level view of PFTU alarm connections. For PFTU
operation, the wiring from the following equipment cross-connects through
termination areas at the MDF:
1
PFTU
2
Auxiliary power supply
3
System monitor
4
Attendant console (optional)
Large System Installation and Commissioning
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