● You are advised to use the PV-CZM-22100 (Staubli) crimping tool and do not
use it with the positioning block. Otherwise, the metal terminals may be
damaged.
● The PV-MS (Staubli) or PV-MS-HZ (Staubli) open-end wrench is recommended.
● Cables with high rigidity, such as armored cables, are not recommended as DC
input power cables, because poor contact may be caused by the bending of the
cables.
● Before assembling DC connectors, label the cable polarities correctly to ensure
correct cable connections.
● After the positive and negative connectors snap into place, try to pull the DC
input power cables back to check that they are secure.
● If the inverter is used with optimizers, the number of optimizers in a single PV
string cannot exceed 25.
● If PV strings are congured with optimizers, check the cable polarities by
referring to the
Smart PV Optimizer Quick Guide
.
Procedure
Step 1 Connect DC power cables.
Figure 5-14 Connecting DC power cables
----End
During DC input power cabling, leave at least 50 mm of slack. The axial tension
on PV connectors must not exceed 80 N. Radial stress or torque must not be
generated on PV connectors.
SUN2000-(20KTL, 29.9KTL, 30KTL, 36KTL, 40KTL)-
M3
User Manual 5 Electrical Connections
Issue 18 (2024-03-10) Copyright © Huawei Technologies Co., Ltd. 52
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