Nortel Meridian 1 Replacement Manual page 115

Figure 10
NT6D52 Rectifier and QBL15 Power/Battery Distribution Box connections
NT0R72 rectifier
TB3
1
– 48 V
48 V return
2
TB4
+ OUT
+ SENS
– SENS
– OUT
DCON
#22 AWG blue (DCON)
#22 AWG red (– SENSE)
#22 AWG black (+ SENSE)
Note 1: All wiring between the rectifier and the QBL15 is contained in the same conduit.
Note 2: Use single cable for 30 m (100 ft) or less, double cable for 30 to 60 m (100 to 200 ft).
Note 3: The terminal function is marked, but the terminal numbers may not be marked.
6 Disconnect the multimeter and follow normal power up procedure to
restore the system to service.
#4 AWG red (note 2)
#4 AWG black
(note 2)
To other
rectifiers
To other
rectifiers
Replacing equipment
QBL15 distribution box
W1
GND POS (+) positive bus
To other rectifiers (note 1)
DISCHARGE
1 2
TB1
TB2
MONITOR
Trip
DCON field
6
wiring kit
Alarm
6
5
3
5
2
4
(note 3)
TB3
6 – SENSE
5 + SENSE
4 – SENSE
3 + SENSE
2 – SENSE
1 + SENSE
Page 115 of 362
CHARGE
3 4
1 2
To other
rectifiers
NT8D46AT cable to
J4 on system monitor
553-3041
Hardware replacement
3