Huawei SUN2000 Series User Manual page 50

SUN2000-(8KTL-20KTL)-M2
User Manual
(3) Terminals of DC input 3
Procedure
Before inserting the positive and negative connectors into the positive and
negative DC input terminals of the SUN2000, check that the DC SWITCH is OFF.
● Cables with high rigidity, such as armored cables, are not recommended as DC
● Before assembling DC connectors, label the cable polarities correctly to ensure
● After crimping the positive and negative metal contacts, pull the DC input
● Insert the crimped metal contacts of the positive and negative power cables
● If the DC input power cable is reversely connected and the DC SWITCH is set to
Step 1 Connect the DC input power cable.
Use the Staubli MC4 positive and negative metal terminals and DC connectors
delivered with the SUN2000. Using incompatible positive and negative metal
terminals and DC connectors may result in serious consequences. The caused
device damage is not covered under any warranty or service agreement.
Issue 01 (2020-07-02)
WARNING
NO TICE
input power cables, because poor contact may be caused by the bending of the
cables.
correct cable connections.
power cables back to ensure that they are connected securely.
into the appropriate positive and negative connectors. Then pull back the DC
input power cables to ensure that they are connected securely.
the ON position, do not operate the DC SWITCH and positive and negative
connectors. Otherwise, the device may be damaged. The caused device damage
is not covered under any warranty. Wait until the solar irradiance declines and
the PV string current drops to below 0.5 A. Then set the two DC SWITCH to the
OFF position, remove the positive and negative connectors, and rectify the
connection of the DC input power cable.
NO TE
● The DC voltage measurement range of the multimeter must be at least 1080 V. If the
voltage is a negative value, the DC input polarity is incorrect and needs correction. If the
voltage is greater than 1080 V, too many PV modules configured in the same string.
Remove some PV modules.
● If the PV string is configured with an optimizer, check the cable polarity by referring to
the Smart PV optimizer quick guide.
CA UTION
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5 Electrical Connections
(4) Terminals of DC input 4
43