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Input connection to PV generator (DC side
Once preliminary checks have been carried out and no problems found with the photovoltaic system, and the channel configuration has been selected (parallel or independent) you may connect the inputs to the inverter.
According to the system configuration, check the correct setting of the channels to independent or in parallel mode. An incorrect setting of the input channels can lead to loss of energy production.
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Polarity inversion can cause serious damage. Check polarity before connecting each string!
When the photovoltaic panels are exposed to sunlight they provide continuous DC voltage to the inverter. To avoid risks of electrical shock, all wiring operations must be carried out with the DC disconnect switch (internal or external to the inverter) off.
For the string connections it is necessary to use the quick fit connectors (usually Weidmüller PV-Stick or WM4, MultiContact MC4 and Amphenol H4) located on the bottom of the mechanic 17 18 .
PVI-5000/6000-TL-OUTD PVI-5000/6000-TL-OUTD-S
17 18 17 18
Refer to the document “String inverter – Product Manual appendix” available 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 manufacturer or in ABB)
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.
Connect all the strings required by the system, always checking the seal of the connectors.
The figure below shows a connection example of the string inputs on a PVI-6000-TL-OUTD-S inverter (with dual input channel). Each input channel is connected to a string, while the protective covers are installed to unused connectors.
IP65
If any string inputs are not required, you must ensure that covers are installed to the connectors, and install any which are missing. This is necessary both for the inverter seal, and to avoid damage to the free connector which may be used at a later time.
