Replacing SUN2000-(15KTL-50KTL) Series with
SUN2000-(15KTL-50KTL)-M3 Series
User Manual
6 Electrical Connections
Issue 01 (2021-04-05)
Copyright © Huawei Technologies Co., Ltd.
54
Before connecting DC input power cables, ensure that the original DC terminals have been
cut off. If the original DC connector is directly connected to the
SUN2000-(15KTL-50KTL)-M3 series, the inverter may be burnt.
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, pull the DC input power cables
back to ensure that they are connected securely.
Use the positive and negative Staubli MC4 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.
Step 1
Cut off the original DC terminals.
Figure 6-7
Cut off the original DC terminals
Step 2
Connect the DC power cables.
