Huawei SUN2000-25KTL-US Quick Installation Manual page 8

Positive and negative metal terminals
Positive metal terminal
Negative metal terminal
Common PV cables with a
cross-sectional area of 12
AWG are recommended.
Ensure that the
locking nut is
secured.
Recommended: H4TW0001
(Amphenol)
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. Before connecting the DC connector to the inverter, measure the voltage of DC input power
cables using a multimeter. Ensure that the voltage of each string is within the specified range
(varies depending on the actual situation) and check that the polarities of the DC input power
cables are correct.
3. The open-circuit voltage of each DC input is always lower than or equal to 1000 V DC.
4. Check that DC input power cables will not be disconnected by pulling them.
2.4 Installing RS485 Communications Cables
NOTICE
When routing communications cables, ensure that communications cables are separated from
power cables and away from interfering source to prevent communication from being affected.
NOTE
1. RS485 communications cables can be connected to the terminal block or RJ45 ports. Connecting
to the terminal block is recommended.
2. It is recommended that the RS485 communications cable be routed through a pipe for protection.
The maximum pipe outer diameter allowed is 25.5 mm (1.00 in.).
3. Before connecting cables, remove the waterproof cable connector from the corresponding position.
Positive metal terminal (female)
Negative metal terminal (male)
Ensure that cables
cannot be removed after
crimped.
Recommended: H4TC0001
(Amphenol)
Positive connector
Negative
connector
7
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