Begin System Installation
7.2.2 Check Sense Lead Routing From BDS–40 To The Battery
The installer normally determines the harness/wire routing but double–checking measurements
lengths and labels is advised. Please refer to section 6.3.2 Maximum Wire And Cable Lengths
on page 19 for details.
CAUTION:
Do not route the wires in the same conduit as other wires in the facility.
7.2.3 Sense Leads Connection
Voltage sense leads connect from each Plus/Base Unit to the individual cells. Each sense lead
has been cut to the appropriate length, assemble it using the drawings sent with the system.
NOTE:
10K 2W 1% flameproof resistor that reduces the risk of a short circuit during installation
and maintenance is preinstalled within the cable for safety.
Properly identify each sense lead to simplify the connection process. When connecting a sense
lead to the same battery terminal as the load cable, the load cable must be closest to the cell
post. Refer to drawing BDS–1179–A581.
7.2.3.1 Intertier Connections
Most battery installations have cables connecting groups of cells on different levels (tiers) within
a battery string. Since these intertier cables normally have higher resistance than intercell
connections, additional sense leads are used to monitor the resistance of these cables. Wires
for one or two intertier connections are included within each sense lead with a maximum of 10
ten intertiers monitored per BDS Base or Plus.
7.2.4 Internal Resistance Load Lead Cable Connecting
The 18 GA wires of the load lead test cable connect to certain cells in the battery string. These
cables come preassembled and do not need cutting or terminating.
Connect the first resistance test current cable to the positive post of the first cell. The last lead
connects to the negative post of the last cell. Other connections depend on the battery
configuration.
7.2.5 Discharge Current Sensor (Optional)
The BDS–40 can be used with a magnetic Current Transducer CT to measure discharge
current. This item can be specified at time of order. When using a magnetic current transducer
CT, connect it to the Current connector on the rear of the unit. The CT provided depends on the
application. Refer to BDS–1189–B985.
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