● 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 solar inverter does not support full parallel connection for PV strings (full
parallel connection: PV strings connect to one another in parallel outside the
solar inverter and then connect to the solar inverter separately).
Terminal Description
The inverter provides 18 DC input terminals, which are controlled by its three DC
switches. DC SWITCH 1 controls DC input terminals 1–6, DC SWITCH 2 controls DC
input terminals 7–12, and DC SWITCH 3 controls DC input terminals 13–18.
Figure 5-15 DC terminals
Requirements for selecting DC input terminals:
1. Evenly distribute the DC input power cables on the DC input terminals
controlled by the three DC switches.
2. Maximize the number of connected MPPT circuits.
SUN2000-(175KTL-H0, 185KTL-INH0, 185KTL-H1)
User Manual 5 Electrical Connections
Issue 19 (2023-12-20) Copyright © Huawei Technologies Co., Ltd. 54
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