Huawei SUN2000-55KTL Series Quick Manual page 11

Ensure that the PV module output is well insulated to ground.

Before inserting the positive and negative connectors respectively into the positive and

negative DC input terminals of the SUN2000, check that the DC voltage does not exceed
1500 V using a multimeter and that the cables are connected correctly. Otherwise, the
SUN2000 will be damaged.
1. Use the Amphenol UTX PV connectors provided with the
SUN2000. If the terminals are lost or damaged, purchase the
PV connectors of the same model. The device damaged
caused by incompatible PV connectors is not covered under
any warranty or service agreement.
2. The metal contacts supplied with the Amphenol UTX PV
connectors are either the cold forming contacts or stamping
forming contacts. Choose the crimping tools that fit the metal
contact types. Do not mix up the tools.
3. Crimp the metal cold forming contacts using crimping tool
UTXTC0001 (recommended) or H4TC0001. When choosing
H4TC0001, do not use the locator.
4. Crimp the metal stamping forming contacts using crimping tool
UTXTC0002.
5. 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.
6. 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.
7. 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.
8. If polarity of the DC input power cable is reversed and the DC
switch is ON, do not turn off the DC switch immediately or
unplug positive and negative connectors. The device may be
damaged if you do not follow the instruction. The caused
equipment damage is beyond the warranty scope. Wait until
the solar irradiance declines and the PV string current reduces
to below 0.5 A, and then turn off the two DC switches and
remove the positive and negative connectors. Correct the
string polarity before reconnecting the string to the SUN2000.
10
Locator