Panasonic Digital Business System - Installation Manual
March 1997
Issue 5
9
Installing The Built In Backup Batteries
There are two types of internal battery. One type for the DBS 38 and another for the DBS 68 and DBS 90. Use the
set appropriate to the CCU being installed.
1
Link the batteries together as shown below.
2
Connect the red and blue leads to the
+
and
-
terminals respectively of the end batteries.
3
Insert the batteries into the bay in the CCU.
Figure 4 - Battery Wiring & Location DBS 38, DBS 68 & DBS 90
Model Number
For CCU
Specification
VB2450A2UK
DBS 38
Sealed lead acid battery
2 x BT2007 (P) 12v 6.5Ah
VB26502UK
DBS 68 / 90
Sealed lead acid battery
4 x BT2005 (P) 6v 8.5Ah
Table 3 - Internal Battery Specifications
Note 1: The batteries can maintain system operation for approximately 30 minutes for a DBS 38 or DBS 68 or 15
minutes for DBS 90. The duration of system operation on battery power is dependant upon the traffic
conditions at the time.
Note 2: Panasonic recommend replacement of the backup batteries every three yeas.
Note 3: The parts listed in table 3 are recommended. However any batteries which meet the specification can be
substituted.