Connecting Dc Input Power Cables; Cable Connection Description - Huawei SUN2000-100KTL-M2 User Manual

SUN2000-(100KTL, 110KTL, 115KTL)-M2
User Manual

5.7 Connecting DC Input Power Cables

Two models of PV connectors are delivered with the device: Amphenol Helios H4
and Staubli MC4. PV connectors of different models cannot be used together.
Device damage caused by mixed use of different PV connectors is not covered by
the warranty.
● For details about using Amphenol Helios H4 PV connectors, see section
● For details about using Staubli MC4 PV connectors, see section

5.7.1 Cable Connection Description

Precautions
● Before connecting the DC input power cables, ensure that the DC voltage is
● If you turn a DC SWITCH to ON by mistake when connecting or disconnecting
● When the solar inverter operates in grid-tied mode, do not perform
Ensure that the following conditions are met. Otherwise, the solar inverter may be
damaged, or even a fire could happen.
●
●
Issue 07 (2023-04-30)
CA UTION
Connecting Cables to Amphenol Helios H4
Connecting Cables to Staubli MC4
D ANGER
within the safe range (lower than 60 V DC) and that the three DC switches on
the solar inverter are set to OFF. Failing to do so may result in electric shocks.
DC input power cables, do not remove or insert DC input terminals. If you need
to remove or insert a DC input terminal, perform the operations provided in
Power-Off for Troubleshooting.
maintenance or operations on the DC circuit, such as connecting or
disconnecting a PV string or a PV module in the PV string. Failing to do so may
cause electric shocks or arcing, which may also cause fire.
WARNING
According to IEC 62548, the maximum open-circuit voltage of each PV string
cannot exceed 1100 V DC at the lowest average annual dry-bulb temperature.
The polarities of electric connections are correct on the DC input side. The
positive and negative terminals of a PV module connect to corresponding
positive and negative DC input terminals of the solar inverter.
Copyright © Huawei Technologies Co., Ltd.
Connectors.
Connectors.
5 Electrical Connections
5.7.2
5.7.3
8.2
60