SMA SB 2800i Installation

Sunny Boy 2800i

String Inverter Sunny Boy 2800i

The New Generation of PV System Technology

SB2800i-11:SE0504

Installation Guide

Table of Contents

1 Introduction . . . . . . . . . . . . . . . . . . . 3

2 Safety Instructions. . . . . . . . . . . . . . . 5

3 Overview. . . . . . . . . . . . . . . . . . . . . 7

3.1 Device Description. . . . . . . . . . . . . . . . . . 7

3.2 External Dimensions. . . . . . . . . . . . . . . . . 8

4 Requirements for the Installation . . . . 9

4.1 Requirements: Mounting Place . . . . . . . . . 9

4.2 Requirements: PV-Modules. . . . . . . . . . . 11

4.3 Requirements: Grid 230 V~ (AC) . . . . . . 12

5 Installation . . . . . . . . . . . . . . . . . . . 15

5.1 Mounting . . . . . . . . . . . . . . . . . . . . . . . 15

5.2 Electrical Installation . . . . . . . . . . . . . . . 16

5.3 Activation . . . . . . . . . . . . . . . . . . . . . . . 21

6 Opening and closing the Sunny Boy. 23

6.1 Opening the Sunny Boy . . . . . . . . . . . . . 23

6.2 Closing the Sunny Boy . . . . . . . . . . . . . . 23

7 Communication. . . . . . . . . . . . . . . . 25

7.1 Powerline Communication . . . . . . . . . . . 25

7.2 RS232 Communication . . . . . . . . . . . . . 26

7.3 RS485 Communication . . . . . . . . . . . . . 28

8 Exchanging varistors. . . . . . . . . . . . 31

9 Contact . . . . . . . . . . . . . . . . . . . . . 35

Revision History

Document number Changes Author

SB2800i-11:SE0504 First Issue Siebert

Installation Guide Introduction

1Introduction

This document gives short installation instructions for
electricians only. It helps to swiftly and correctly install and
commission an SMA inverter type „ SB 2800i“.

For detailed technical data and operating instructions please
see the Operating Instructions.

The „GenAu“ tool will help to dimension and check the size of
your strings with respect to the Sunny Boy you intend to use. The
„GenAu“ tool is available for download at www.SMA.de.

If you have any further questions please do not hesitate to call
the Sunny Boy hotline on the following number:

[phone]

All trademarks mentioned in this Installation Guide are
accepted.

SB2800i-11:SE0504 SMA Regelsysteme GmbH 3

Introduction Installation Guide

4 SMA Regelsysteme GmbH SB2800i-11:SE0504

Installation Guide Safety Instructions

2Safety Instructions

Only a qualified electrician may work on the
open Sunny Boy! This work is only permissible
if the AC and DC power supply are safely
disconnected from the Sunny Boy.

The Sunny Boy must be disconnected from the grid and secured
against accidental reconnection. Connections to the PV
generator must be disconnected as well.

When this has been done, always wait for
approx. 5 minutes so that the capacitors in the
Sunny Boy can be discharged. Only then may
the lid be opened and the safe isolation from
power supply be checked.

The Sunny Boy 2800i is equipped with the anti-islanding unit
„SMA grid guard“. The Sunny Boy 2800i therefore complies
with the VDEW guidelines for grid interactive inverters and the
DIN VDE 0126 (4.99) specified in this regulation.

The Sunny Boy is equipped with high

voltage capacitors that can contain lethal

voltages even when disconnected from

supply power for some time.

SB2800i-11:SE0504 SMA Regelsysteme GmbH 5

Safety Instructions Installation Guide

6 SMA Regelsysteme GmbH SB2800i-11:SE0504

Installation Guide Overview

3 Overview

3.1 Device Description

The following figure shows the different components and
connection areas of an open Sunny Boy 2800i inverter.

Varistors,
page 31

Communication socket
(RS232, RS485, PLC),
page 25

Socket for
display unit
(Sunny Display)

LEDs indicating

operating state

Terminal for PE

Terminals (AC)
page 17

PV input plugs (DC),

page 19

Fig. 3.1: Inside view of the Sunny Boy 2800i

SB2800i-11:SE0504 SMA Regelsysteme GmbH 7

Communication
terminal

Overview Installation Guide

3.2 External Dimensions

Abb. 3.2: Size of the Sunny Boy 2800i

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Installation Guide Requirements for the Installation

4 Requirements for the Installation

Please make sure to fulfill all conditions below before installing
and commissioning the Sunny Boy.

4.1 Requirements: Mounting Place

The Sunny Boy 2800i has a relatively high weight of 31 kg.
Please keep this in mind when selecting the place where and how
to mount the Sunny Boy.

The ambient temperature should be within -25 °C
and + 60 °C.

The Sunny Boy 2800i is only for inside installation. It should be
mounted in a place whithout high temperatures - otherwise this
may reduce the yield of the PV plant.

It can be mounted straight or to the back. To ensure optimum
energy yield and easy operation it should be mounted straight
and on eye level.

Important for the selection of the location:

Unintended removal of the Multi-Contact
snap-cable connectors can damage the
connectors and even result in serious injuries.
Install the Sunny Boy in a place where an
unintended removal of the Multi-Contact
connectors (e. g. by children) is not possible.

Some parts of the Sunny Boy can reach
temperatures over 80 °C. Keep a suitable
distance to flammable materials!

Never install the Sunny Boy in areas that likely
contain explosive athmospheres (battery
rooms, fuel storage rooms etc.)!

31 kg

®

®

Install the Sunny Boy 2800i in a fairly dust free
environment.

SB2800i-11:SE0504 SMA Regelsysteme GmbH 9

Requirements for the Installation Installation Guide

Please make sure there is a sufficient space for heat dissipation!
In a normal environment the following clearance should be
provided for a single Sunny Boy 2800i

Minimum clearance

Lateral 20 cm

Top 20 cm

Pay attention to the required minimum

clearance for the Sunny Boy 2800i

Bottom 20 cm

Front 5 cm

Table 4.1: Minimum clearance

If you want to install several Sunny Boy 2800i side by side on the
same level, pay attention to the minimum distance between them.
If there is not enough space between the devices, the left Sunny
Boy will reduce the yield of the PV plant because of the
incomming air temperature.

Two or more Sunny Boy 2800i
may not be mounted directly to
each other.

The minimum space between two Sunny Boy 2800i has to be
40 cm.

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