Figure 5-11 DC terminals
When DC inputs are not fully congured, the input terminals should meet the
following requirements:
1. Evenly distribute the DC input power cable on the DC input terminals
controlled by the two DC switches.
2. Maximize the number of connected MPPT circuits.
For example, if the number of input routes is 1–11, the recommended DC input
terminals are as follows:
Number
of PV
Strings
Terminal Selection Number
of PV
Strings
Terminal Selection
1 Connects to any even-
number route.
2 Connects to routes 2 and
10.
3 Connects to routes 2, 6, and
10.
4 Connects to routes 2, 6, 10,
and 12.
5 Connects to routes 2, 4, 6,
10, and 12.
6 Connects to routes 2, 4, 6,
8, 10, and 12.
7 Connects to routes 2, 4, 6,
8, 9, 10, and 12.
8 Connects to routes 1, 2, 4,
6, 8, 9, 10, and 12.
9 Connects to routes 1, 2, 4,
6, 7, 8, 9, 10, and 12.
10 Connects to routes 1, 2, 4,
6, 7, 8, 9, 10, 11, and 12.
11 Connects to routes 1, 2, 3,
4, 6, 7, 8, 9, 10, 11, and 12.
- -
Requirements on Cable
Specications
Cables with high rigidity, such as armored cables, are not recommended, because
poor contact may be caused by the bending of cables.
Use the positive and negative metal contacts and DC connectors delivered with
the SUN2000. If the PV connectors are lost or damaged, purchase the connectors
of the same model. The device damage caused by incompatible PV connectors is
not covered under any warranty.
SUN2000-(90KTL, 95KTL, 100KTL, 105KTL) Series
User Manual
5 Electrical Connections
Issue 11 (2020-08-30) Copyright © Huawei Technologies Co., Ltd. 57