Huawei SUN2000-63KTL-JPH0 User Manual page 55

SUN2000-63KTL-JPH0
User Manual
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Terminal Description
The SUN2000 provides 12 DC input terminals, which are controlled by its two DC switches.
DC SWITCH 1 controls DC input terminals 1–6 (MPPT1–3) and DC SWITCH 2 controls DC
input terminals 7–12 (MPPT4–6).
Figure 5-9 DC terminals
When DC inputs are not fully configured, the input terminals should meet the following
requirements:
1.
2.
For example, if the number of input routes is 1–11, the recommended DC input terminals are
as follows:
Number
of PV
Strings
1
3
5
Issue 06 (2020-02-18)
Ensure that the PV module output is well insulated to ground.
The PV strings connecting to the same MPPT circuit should contain the same number of
identical PV modules.
The SUN2000 does not support full parallel connection for PV strings (full parallel
connection: PV strings connect to one another in parallel outside the SUN2000 and then
connect to the SUN2000 independently).
During the installation of PV strings and the SUN2000, the positive or negative terminals
of PV strings may be short-circuited to ground if the power cable is not properly installed
or routed. In this case, an AC or DC short circuit may occur and damage the SUN2000.
The caused device damage is not covered under any warranty.
Evenly distribute the DC input power cable on the DC input terminals controlled by the
two DC switches.
Maximize the number of connected MPPT circuits.
Terminal Selection
Connects to any even-number
route.
Connects to routes 2, 6, and 10.
Connects to routes 2, 4, 6, 10,
Copyright © Huawei Technologies Co., Ltd.
5 Electrical Connections
Number Terminal Selection
of PV
Strings
2 Connects to routes 2 and 10.
4 Connects to routes 2, 6, 10, and
12.
6 Connects to routes 2, 4, 6, 8,
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