Huawei SUN2000-55KTL Series User Manual page 48

SUN2000-(55KTL, 60KTL) Series
User Manual
Ensure that the following conditions are met. Otherwise, the SUN2000 will be damaged, or
even become a fire hazard.
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Context
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Figure 5-12 DC terminals
Table 5-2 Requirements for selecting DC terminals
Number of Inputs
1
2
Issue 06 (2020-01-03)
The open-circuit voltage of each PV string is always lower than or equal to 1500 V DC.
The positive and negative terminals of a PV module connect to corresponding positive and
negative DC input terminals of the SUN2000.
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.
During the installation of PV strings and SUN2000, the positive or negative terminals of
PV strings may be short-circuited to ground if power cables are not properly installed or
routed. In this case, an AC or DC short circuit may occur and damage the SUN2000. The
caused equipment damage is beyond the warranty scope.
DC terminal selection
Figure 5-12 shows the DC terminals at the bottom of the SUN2000.
requirements for selecting DC terminals.
The SUN2000 provides two DC switches, named as, DC SWITCH 1 and DC SWITCH 2. DC SWITCH
1 controls the first to fourth sets of DC input terminals, whereas DC SWITCH 2 controls the fifth to
eighth sets of DC input terminals.
SUN2000
Connects to set 1.
Connects to sets 1 and 5.
Copyright © Huawei Technologies Co., Ltd.
5 Electrical Connections
Table 5-2 shows the
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