Nortel Networks 1000E - Manual (Page 453)

Installing and cross-connecting an external alarm from a PFTU Page 453 of 466
Communication Server 1000E Installation and Commissioning
Installing an alarm through QUA6 PFTU connections
A QUA6 PFTU can be used to connect an external alarm through normally
open or normally closed contacts of one of its units. The contacts operate
under the same conditions as the PFTU and can support the capacities listed
in Table 63.
Figure 183 on page 454 is an example of the contacts on one unit (PFT1) of
the PFTU. The figure also shows the contacts in normal operating mode, not
in failure mode. Table 64 on
page 454 provides the connections for all units
on the PFTU.
Table 63
The AC capacities
Maximum AC capacities
Switching power 50.0 V A
Switching voltage 125.0 V rms
Switching current 0.5 A