Connecting Cables To Amphenol Helios H4 Terminals - Huawei SUN2000-20KTL-M3 User Manual

SUN2000-(20KTL, 29.9KTL, 30KTL, 36KTL, 40KTL)-
M3
User Manual
2.
Quantity
of PV
Strings
1
3
5
7

5.5.2 Connecting Cables to Amphenol Helios H4 Terminals

Use the Amphenol Helios H4 positive and negative metal terminals and DC
connectors delivered with the inverter. Using incompatible positive and negative
metal terminals and DC connectors may result in serious consequences. The
resulting device damage is not covered by the product warranty.
● You are advised to use the H4TC0003 (Amphenol) crimping tool and do not use
it with the positioning block. Otherwise, the metal terminals may be damaged.
● The H4TW0001 (Amphenol) 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 configured with optimizers, check the cable polarities by
referring to the
Procedure
Step 1 Connect DC power cables.
Issue 18 (2024-03-10)
Maximize the number of connected MPPT circuits.
Terminal Selection
PV1
PV1, PV3, PV7
PV1, PV2, PV3, PV5, PV7
PV1, PV2, PV3, PV4, PV5,
PV7, PV8
CA UTION
NO TICE
Smart PV Optimizer Quick Guide .
Copyright © Huawei Technologies Co., Ltd.
5 Electrical Connections
Quantity Terminal Selection
of PV
Strings
2 PV1, PV7
4 PV1, PV3, PV5, PV7
6 PV1, PV2, PV3, PV5, PV7,
PV8
8 PV1, PV2, PV3, PV4, PV5,
PV6, PV7, PV8
50