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I
nput connection to PV generator (DC side)
Comply with the maximum input current relating to the quick-fit connectors as indicated in the
technical data.
Polarity inversion can cause serious damage. Check polarity before connecting each string!
The installation must be performed by qualified installers and/or licensed electricians in accor-
dance with the existing regulations in the country of installation and in accordance of all safety
rules for performing electrical works. These activity is allowed ONLY with the appropriate PPE
for carrying out this check (overall resistant to electric arc, dielectric helmet with visor, insula-
ting gloves class 0, Protective overglove in leather EN420 – EN388 , Safety shoes).
Caution! The inverters referred to in this document are TRANSFORMERLESS. This type re-
quires the use of insulated photovoltaic panels (IEC61730 Class A Rating) and the need to
keep the photovoltaic generator floating with respect to ground: no terminal of the generator
must be connected to ground.
Using corresponding parts that are not compliant with the quick fit connector models on the
inverter could cause serious damage to the unit and lead to invalidation of the warranty.
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4A
4B
4C
1D
4D
6A
6B
6C
6D
After having carried out preliminary checks and therefore having verified
that there are no problems in the photovoltaic system, you may connect
the inputs to the inverter.
For the string connections it is necessary to use the quick fit connectors
(usually Weidmüller PV-Stick or WM4, MultiContact MC4 and Amphe-
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nol H4) located on the left side of the wiring box
Refer to the document "String inverter – Product Manual appendix" avai-
lable at www.abb.com/solarinverters to know the brand and the model of
the quick fit connector. Depending on the model of the connector of the
own inverter, it is necessary to use the same model and the respective
counterpart (check the compliant counterpart on the website of the ma-
nufacturer or in ABB)
The input connectors are divided into 6 groups (one group for each input
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channel) consisting of 4 pairs of quick fit connectors.
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5 - Installation
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02
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