Huawei SUN2000-33KTL - Safety Precautions; Personnel Requirements; Label Protection; Installation Safety

6
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. Check that DC input power cables will not be disconnected by pulling them.
3. If DC input power cables are reversely connected and the DC switch is ON, do not turn off the
DC SWITCH immediately. Otherwise, the equipment may be damaged. You can disconnect the
DC input power cable on the PV string side or wait until the PV string voltage reduces to a value
within the safety range. Then, turn off the DC SWITCH, remove the positive and negative
connectors, and rectify the connection.
NOTICE
Positive connector
Negative
connector
Positive metal terminal
Negative metal terminal
Common PV cables with a
cross-sectional area of 4 mm²
are recommended.
Ensure that cables cannot
be removed after crimped.
Recommended: H4TC0001
(Amphenol)
Click
Ensure that the
locking nut is
secured.
Recommended: H4TW0001
(Amphenol)
2.4
Model
Communication Mode
Remarks
RS485
PLC
SUN2000-33KTL
(with PLC)
Supported
Supported
1. Only one communications mode can be
selected in application scenarios.
2. If the PLC communications mode is selected,
no device installation is required.
SUN2000-40KTL
(with PLC)
Supported
Supported
SUN2000-33KTL
(without PLC)
Supported
Not
supported
None.
SUN2000-40KTL
(without PLC)
Supported
Not
supported
None.
Selecting a Communication Mode