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

6
Optional DC input terminals
Number of
Inputs
SUN2000
1
Connects
to any one route
2
Connects to
routes 1 and 3
3
Connects to
routes 1, 3, and 5
4
Connects to
routes 1, 2, 3, and 5
5
Connects to
routes 1, 2, 3, 4, and 5
6
Connects to
routes 1, 2, 3, 4, 5, and 6
Routes 1, 2, 3, 4, 5, and 6 are defined
from left to right.
NOTE
Installing DC Input Power Cables
2.3
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 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, label the cable polarities to ensure correct cable
connections. If the cables are connected incorrectly, the SUN2000 may be damaged.
4. Insert the crimped metal contacts 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.
5. Connect the positive and negative connectors to the appropriate positive and negative DC input
terminals. Then pull back 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.
NOTICE
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 DC using
a multimeter and that the cables are connected correctly. Otherwise, the inverter will be
damaged.