Nortel Networks 1000M - Manual (Page 371)

Alarm through a QUA6 PFTU 371
Figure 140 "Contacts in PFTU" (page 371) shows an example of the
contacts on one unit (PFT1) of the PFTU. The contacts are shown in normal
operating mode, not in failure mode.
Table 73 "Power Failure Transfer Unit
connections" (page 371) gives the connections for all units on the PFTU.
Figure 140
Contacts in PFTU
Table 73
Power Failure Transfer Unit connections
Unit Pair Color Normal mode Failure mode
5T
5R
W-S
S-W Makes with 6T
and 6R Opens 6T and 6R
Makes with 7T and 7R
6T
6R
R-BL
BL-R Makes with 5T
and 5R Open
7T
7R
R-O
O-R Makes with 8T
and 8R Opens 8T and 8R
Makes with 5T and 5R
P
F
T
1
8T
8R
R-G
G-R Makes with 7T
and 7R Open
Nortel Communication Server 1000
Communication Server 1000M and Meridian 1 Small System Installation and Commissioning
NN43011-310 01.04 Standard
Release 5.0 13 May 2008
Copyright © 2008, Nortel Networks
.