Weco ESS 5K3-XP - Relevant Topics About Connections

WECO 5K3-XP RACK LV-EMEA
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Version 11/11/2021
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3.2.2 Relevant Topics about Connections
ATTENTION: Although each module is supplied together with a pair of power cables (1x25mmq
RED and 1x25mmq BLACK), depending on the number of modules in the rack, the cable sections
must be adequate. To avoid voltage drops and overheating, the length of the cables must be
reduced as much as possible.
ATTENTION: The terminal block pole can support a 19mm width Cable Lug.
Cable sizing must be calculated by a qualified technician/engineer,
based on local regulations and according to overall system design.
When more than one battery is connected in parallel, we suggest to use a capacity reduction factor of 2%
to calculate the Cluster Capacity at the first installation.
When used in Cluster the Initial Capacity is calculated in 5.2kWh per Module.
Numbers of Modules
C-Rate
Current Allowance
Power W
1
1
100
5.200
2
0.98
196
10.192
3
0.96
288
14.976
4
0.94
376
19.552
5
0.92
460
23.920
6
0.9
540
28.080
7
0.88
616
32.032
8
0.86
688
35.776
9
0.84
756
39.312
10
0.82
820
42.640
11
0.8
880
45.760
12
0.78
936
48.672
13
0.76
988
51.376
14
0.74
1036
53.872
15
0.72
1080
56.160
ATTENTION
The Battery Terminal Block can support max 50/75mm² on each connection point (two each pole).
It is compulsory to set the maximum inverter current in accordance with the output cables
capabilities.