Danfoss DLX 4.6 Guía de usuario descargar pdf (Pagina 22)

22 User Guide DLX Series L00410623-1

4.3. Electrical Installation

Correct electrical connection is critical for achieving a safe, long-term and reliable

operation of the entire PV system.

NOTICE

The electrical connections on the AC and DC side must be performed by qualified

persons and comply with local and national electrical regulations and the

instructions detailed in this User Manual.

Figure 4.3.1: Simplified PV system overview

4.3.1. Conductors

Two important criteria must be considered in the selection of conductor sizes, namely

ampacity and voltage drop. Using correctly sized conductors improves the efficiency of the

PV system.

• Ampacity refers to the current-carrying capacity of the conductor. The larger the

conductor is, the greater its capacity to carry current.

• Voltage drop is the loss of voltage due to cross section, current flow and length of the

conductor. It is recommended to minimize the system conductor voltage losses, as

voltage losses are equal to loss in energy yield.

CAUTION

The conductor cross section area and the disconnector ratings must conform to

the ratings required by local and national electrical regulations.

• Use adequately sized conductors with the correct temperature rating and sunlight

resistance.

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Danfoss DLX 4.6 Guía de usuario Pagina 22