Huawei SUN2000 Series Quick Installation Manual page 6

1. Use the positive and negative metal contacts and DC connectors supplied with the SUN2000.
Using other models of positive and negative metal contacts and DC connectors may result in
serious consequences. The caused device damage is not covered under any warranty or service
agreement.
2. The metal contacts supplied with the DC connectors are either cold forming contacts or stamping
forming contacts. Crimp the metal cold forming contacts using crimping tool H4TC0001
(Amphenol). Crimp the metal stamping forming contacts using crimping tool H4TC0002
(Amphenol). Choose the crimping tools that fit the metal contact types. Do not mix up the tools.
3. 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.
4. Insert the crimped metal terminals of the positive and negative power cables into the
appropriate positive and negative connectors. Then pull the DC input power cables to ensure
that they are connected securely.
5. Connect the positive and negative connectors to the appropriate positive and negative DC
input terminals. Then pull the DC input power cables to ensure that they are connected
securely.
6. 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 and the damage
is beyond the warranty scope. Wait until the PV string voltage reduces to the safety range
(below 60 V DC). Then, turn off the DC SWITCH, remove the positive and negative
connectors, and rectify the connection.
Installing a DC input power cable (using metal cold forming contacts)
Positive metal contact
Negative metal contact
Common PV cables with a
cross-sectional area of 4 mm²
are recommended.
Ensure that cables cannot
be removed after crimped.
Ensure that cables
are connected
correctly and that
the voltage does not
exceed 1000 V DC.
5
Positive connector
Negative
connector
Click
Ensure
that the
locking nut
is secured.