Huawei SUN2000-75KTL Series User Manual page 72

SUN2000-(75KTL, 100KTL, 110KTL, 125KTL) Series
User Manual
Specification Requirements
Cables with high rigidity, such as armored cables, are not recommended, because
poor contact may be caused by the bending of cables.
Use the Staubli MC4 connectors delivered with the solar inverter. If the PV
connectors are lost or damaged, purchase the connectors of the same model. The
device damage caused by incompatible PV connectors is beyond the warranty
scope.
Procedure
Step 1 Prepare the DC input power cables.
Step 2 Crimp positive and negative metal contacts.
Step 3 Insert the contacts into the corresponding positive and negative connectors.
Step 4 Tighten the lock nuts on the positive and negative connectors.
Step 5 Use a multimeter to measure the voltage between the positive and negative
terminals of the PV string (measurement range no less than 1100 V).
●
●
Issue 11 (2021-11-10)
Scenario Model of Y-branch
Connector (Part
A)
Connecting All models
Y-branch
connectors
to the PV
strings
(recommen
ded)
Connecting Models
Y-branch recommended by
connectors Huawei
to the
Other models
SUN2000
CA UTION
If the voltage is a negative value, the DC input polarity is incorrect and needs
correction.
If the voltage is greater than 1100 V, too many PV modules configured to the
same string. Remove some PV modules.
Copyright © Huawei Technologies Co., Ltd.
5 Electrical Connections
Connection Description
Use the DC terminals delivered with the
SUN2000s to connect part B to the
SUN2000s.
Part A can be directly connected to the
SUN2000, and part B is not needed.
To ensure that the terminals of part A
match the DC terminals of the
SUN2000, part B is needed to connect
part A to the SUN2000. Use the DC
terminals delivered with the SUN2000
to connect part B to the SUN2000.
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