Lucent Technologies Lineage
®
2000 ECS Battery Plant J85500D-3
2 - 10 Product Description
Issue 5 January 1999
ECS dc
distribution
panel
The ECS dc distribution elements are shown schematically in
Figure 2-2 and pictorially in Figure 2-3. They are located behind
the dc distribution cover panel. These elements include the
distribution bus bars, the plant shunt and the optional
low-voltage battery disconnect/reconnect feature or low-voltage
load disconnect/reconnect feature.
Distribution bus
bars
The distribution or plant bus bars include the Charge Return Bus
and the Discharge Return Bus (see Figure 2-3). Battery strings
are terminated to Battery Bus 1 and the Charge Return Bus.
Rectifier output is terminated to Battery Bus 2 and the Charge
Return Bus. Power conductors for load circuits are connected,
though distribution circuit breakers, to Battery Bus 2. The return
conductors for load circuits tie to the Discharge Return Bus. The
Discharge and Charge Return Buses are joined via the Plant
Shunt. Battery Buses 1 and 2 are interconnected by the LVD/R
Contactor.
Plant shunt
The current shunt in the ECS Battery Plant is connected between
the Charge Return Bus and the Discharge Return Bus (see Figure
2-3). It is used to measure the total current supplied to the load
Figure 2-5: ECS dc distribution panel (front view)
11
12
32
33
1
2
22
23
13
14
34
35
3
4
24
25
15
16
36
37
5
6
26
27
17
18
38
39
7
8
28
29
19
20
40
41
9
10
30
31
21
42
FAIL
F
F
1 1/3 A
1 1/3 A 2A
LINEAGE 2000
1
7
F
F
2
8
F
F
3
9
F
F
4
10 11 12
F
F
5
F
F
6
OPEN
LVD/R
1
2
3
4
5
6
7
8
9
10
11
13
15
17
21
19
12
14
20
16
18
32
34
36
38
40
42
30
22
24
26
28
23
25
27
29
31
33
35
37
39
41
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