Huawei SUN2000-4.95KTL-JPL0 User Manual page 47

SUN2000-4.95KTL-JPL0
User Manual
Prerequisites
● Before connecting the DC input power cables, ensure that the DC voltage is
● When the solar inverter is operating, it is not allowed to work on the DC input
● If no PV string connects to a DC input terminal of the solar inverter, do not
Ensure that the following conditions are met. Otherwise, the solar inverter may be
damaged, or even a fire could happen.
● The open-circuit voltage of each PV string is always lower than or equal to 600
● The polarities of electric connections are correct on the DC input side. The
● If polarity of the DC input power cables is reversed, do not turn off the DC
● Since the output of the PV string connected to the solar inverter cannot be
● During the installation of PV strings and the solar inverter, the positive or
Issue 04 (2023-02-17)
D ANGER
within the safe range (lower than 60 V DC) and that the DC switch on the solar
inverter is set to OFF. Failing to do so may result in electric shocks.
power cables, such as connecting or disconnecting a PV string or a PV module
in a PV string. Failing to do so may cause electric shocks.
remove the watertight cap from the DC input terminal. Otherwise, the IP rating
of the solar inverter will be affected.
WARNING
V DC.
positive and negative terminals of a PV module connect to corresponding
positive and negative DC input terminals of the solar inverter.
switch immediately or unplug positive and negative connectors. Wait until the
solar irradiance declines at night and the PV string current drops below 0.5 A.
Then, turn off the DC switch, remove the positive and negative connectors, and
rectify the connection of the DC input power cables.
NO TICE
grounded, ensure that the PV module output is well insulated to ground.
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 solar inverter. The caused device damage is not
covered under any warranty.
NO TE
The solar inverter supports Y type terminals.
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5 Electrical Connections
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