Nortel Meridian 1 Option 11C Planning And Installation Manual page 186

Page 186 of 408 Installing power fail transfer units
PFTU control lead signals
Table 18
PFTU control lead signals
NTAK1104 Aux. Cable
Lead
BRTN
BRTN
-48V AUX
PFTS
553-3021-210 Standard 7.00
To connect PFTUs from other manufacturers, use the information provided
in the following table:
Lead State when PFTU in
Non-Transferred State
GROUND
GROUND
-48V DC (250 mA max.)
Note 1: Refer to Figure 77 on page 183 for an illustration of where the
Auxiliary cable connects to the Option 11C system.
Note 2: If power is removed from the QUA6, a transfer of the PFTU
may also be invoked.
January 2002
OPEN
Lead State when PFTU in
Transferred State
GROUND
GROUND
-48V DC (250 mA max.)
GROUND