PV Powered 2500 Guide d'installation télécharger pdf (Page 17)

SMA Solar Technology AG Electrical Connection

Installation Guide SB25_30-IEN092520 17

5.2 Connecting the Sunny Boy to the public grid (AC)

Cable Design

The conductor cross-section should be dimensioned in a way that output losses do not exceed 1% at

nominal power. Use "Sunny Design" (www.SMA.de/en) for this.

The maximum cable lengths relative to the conductor cross-section are shown in the following table.

The conductor cross-section required in individual cases depends on the following factors:

• Ambient temperature,

• Routing method,

•UV resistance,

•Line losses,

• Valid installation guidelines of the respective country (of the installation site).

Cable Requirements

Connection requirements of the utility operator

Comply with the connection requirements of your utility operator.

Inverter Conductor cross-section Maximum cable length

SB 2500 1.5 mm² 9 m

2.5 mm² 15.5 m

SB 3000 2.5 mm² 12.5 m

Position Designation Value

A External diameter 9 ... 17 mm

B Conductor cross-section max. 2.5 mm²

C Strip insulation 4 ... 5 mm

1 2 ... 12 13 14 15 16 17 18 19 20 21 22 ... 51 52

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PV Powered 2500 Guide d'installation Page 17