Huawei SUN2000-25KTL-US Quick Installation Manual page 11

WARNING
Ensure that the PV string is well insulated to the ground.

Before inserting the positive and negative connectors respectively into the positive and

negative DC input terminals of the inverter, check that the DC voltage does not exceed 1000 V
using a multimeter. Otherwise, the inverter will be damaged.
NOTICE
1. Before connecting DC input power cables, mark the polarities on the cables to ensure that the
cables are connected correctly. If the cables are connected incorrectly, the device may be
damaged.
2. Insert the crimped metal terminals of the positive and negative power cables into the appropriate
positive and negative connectors. Then pull back the DC input power cables to ensure that they
are connected securely.
3. Connect the positive and negative connectors to the appropriate positive and negative DC input
terminals. Then pull DC input power cables to ensure that they are connected securely.
4. If the DC input power cables are reversely connected and the DC switch is ON, do not turn off
the DC switch immediately. Otherwise, the inverter may be damaged. Wait until the PV string
voltage reduces to the safety range. Then, turn off the DC switch, remove the positive and
negative connectors, and rectify the connection.
5. The damage caused by reverse connection of the DC input power cable is beyond the warranty
scope.
Positive metal terminal
Negative metal terminal
Common PV cables with a
cross-sectional area of 12
AWG are recommended.
Ensure that cables
cannot be removed after
crimped.
Recommended:
H4TC0001 (Amphenol)
Ensure that the
cables are correctly
connected and the
voltage does not
exceed 1000 V.
10
Positive connector
Negative
connector
Click
Ensure that the
locking nut is
secured.
Recommende
d: H4TW0001
(Amphenol)