Nortel Networks 1000M warranty Installing Power Failure Transfer Units, Pftu configurations

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Installing Power Failure Transfer Units

Contents

This section contains information on the following topics:

PFTU configurations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 145

Installing a PFTU . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 148

Connecting trunks and telephones. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 149

Installing QUA6 PFTUs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 150

PFTU configurations

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 60 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:

1PFTU

2Auxiliary power supply

3System monitor

4Attendant console (optional)

Communication Server 1000M and Meridian 1 Large System Installation and Commissioning