Lucent Technologies 415B Battery Plant for 4ESS
Issue 6 September 1999
System Installation 4 - 9
Battery String
Alarm
Connections
The Battery String Protection Fuse Alarm connection was
designed for ease of installation. Use 22-gauge stranded wire to
connect the alarm from the BNF2 board to the ED83146-30 G1
protection fuse with a single wire connection.
The connections at the BNF2 alarm board at the top of the
H569-429 Control and Distribution Bay have quick connect,
wire crimp, push-ons for ease of installation. The connection is
current limited by the R10 resistor on the circuit board. The
connection at the battery protection fuse has a 202A terminal for
terminating the connection. It is easily accessed by removing the
two screws and removing the cover from the ED83146-30 G1.
The Battery Fuse Alarm connections at the BNF2 board are
marked E1, E2, or E3. Each connection is for one battery string.
The connections are common on the circuit board so that if any
negative return is applied to any E1, E2, or E3, it will issue an
MJF alarm and an Open String alarm.
The Battery String Protection Module has a 600-ampere fuse
with an LED and a 70G-type fuse indicator that is used to
indicate a blown fuse. The module is mounted to the battery
stand with Kit 847936192 and mounted on the negative side of
the battery return.
Miscellaneous
Connections
Connect the rectifier sense cable (847821907) to the Control and
Distribution Bay BNF2 alarm board located inside the top panel
of the Bay. Refer to Sheet D5 of the T-83360-30 drawing for
connections.
Rectifiers
Refer to the rectifier product manual for power up of the
rectifiers.
Enhanced
Ground Current
Monitor
Follow this procedure to install the Enhanced Ground Current
Monitor (EGCM).
1. Identify the ground lead between the Plant Discharge
Return Bus Bar and the CO Ground. This should be a 1/0
cable.
2. With a dc clamp-on ammeter, verify that the cable
identified in Step 1 is carrying less than 500mA. If a
current flow greater than 500mA is detected, it must be
eliminated before proceeding.
