Disconnection
Disconnection can be performed in reverse order.
5.5 Installing DC Input Power Cables
Important Notes
● Before connecting the DC input power cable, ensure that the DC voltage is
within the safe range (lower than 60 V DC) and that the DC switch on the
SUN2000 is OFF. Otherwise, electric shocks may occur.
● When the SUN2000 is operating, it is not allowed to work on the DC input
power cables, such as connecting or disconnecting a PV string or a PV module
in a PV string. Otherwise, electric shocks may occur.
● If no PV string connects to a DC input terminal of the SUN2000, do not remove
the watertight cap from the DC input terminals. Otherwise, the IP rating of the
SUN2000 will be aected.
Ensure that the following conditions are met. Otherwise, the SUN2000 may be
damaged, or even re could happen.
● PV modules connected in series in each PV string are of the same specications.
● The open-circuit voltage of each PV string must always be 1100 V DC or lower.
● The maximum short-circuit current of each PV string must always be 15 A or
lower.
● The polarities of electric connections are correct on the DC input side. The
positive and negative terminals of a PV string connect to corresponding positive
and negative DC input terminals of the SUN2000.
● If polarity of the DC input power cable is reversed, do not turn o the DC
switch immediately or remove positive and negative connectors. Wait until the
solar irradiance declines at night and the PV string current reduces to below 0.5
A, and then turn o the DC switch and remove the positive and negative
connectors. Correct the PV string polarity before reconnecting the PV string to
the SUN2000.
SUN2000-(3KTL-10KTL)-M1 Series
User Manual 5 Electrical Connections
Issue 17 (2024-01-12) Copyright © Huawei Technologies Co., Ltd. 49
To Next Page
Loading...
Need help?
General
