SMA Sunny Boy SB 2500 User manual

Sunny Boy SB 2500 and SB 3000
String Inverter for Photovoltaic Plants
Installation Guide Version 1.0 SB25_30-11:SE0307
IMEN-SB25_30

SMA Technologie AG Table of Contents
Installation Guide SB25_30-11:SE0307 Page 3
Table of Contents
1 Explanation of the Symbols Used . . . . . . . . . . . . 5
2 Foreword. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
2.1 Target Group. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
2.2 Appropriate Usage. . . . . . . . . . . . . . . . . . . . . . . . . 8
2.3 Validity of Documentation . . . . . . . . . . . . . . . . . . . . 8
3 Safety Instructions . . . . . . . . . . . . . . . . . . . . . . . . 9
4 Overview. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
4.1 Unit Description . . . . . . . . . . . . . . . . . . . . . . . . . . 11
4.2 External Dimensions . . . . . . . . . . . . . . . . . . . . . . . 12
5 Installation Requirements. . . . . . . . . . . . . . . . . . 13
5.1 Installation Location Requirements . . . . . . . . . . . . . 13
5.2 PV Generator Requirements . . . . . . . . . . . . . . . . . . 15
5.3 Low Voltage Grid (AC) . . . . . . . . . . . . . . . . . . . . . 15
6 Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
6.1 Mounting the Device. . . . . . . . . . . . . . . . . . . . . . . 21
6.2 Electrical Installation . . . . . . . . . . . . . . . . . . . . . . . 22
6.2.1 Connecting the AC Output . . . . . . . . . . . . . . . . . . . . . . . . . . .24
6.2.2 PV String (DC) Connection . . . . . . . . . . . . . . . . . . . . . . . . . . .30
6.3 Commissioning . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
7 Opening and Closing the Sunny Boy . . . . . . . . 33
7.1 Opening the Sunny Boy . . . . . . . . . . . . . . . . . . . . 33
7.2 Closing the Sunny Boy . . . . . . . . . . . . . . . . . . . . . 33
8 Technical Data . . . . . . . . . . . . . . . . . . . . . . . . . . 35
8.1 Sunny Boy SB 2500 . . . . . . . . . . . . . . . . . . . . . . . 35
8.1.1 PV Generator Connection Data . . . . . . . . . . . . . . . . . . . . . . . .35
8.1.2 Grid Connection Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .36

Table of Contents SMA Technologie AG
Page 4 SB25_30-11:SE0307 Installation Guide
8.2 Sunny Boy SB 3000 . . . . . . . . . . . . . . . . . . . . . . . 37
8.2.1 PV Generator Connection Data . . . . . . . . . . . . . . . . . . . . . . . .37
8.2.2 Grid Connection Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .38
8.3 General Data. . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
8.3.1 Efficiency of the Sunny Boy SB 2500 . . . . . . . . . . . . . . . . . . . .40
8.3.2 Efficiency of the Sunny Boy SB 3000 . . . . . . . . . . . . . . . . . . . .41
8.4 Operating Parameters. . . . . . . . . . . . . . . . . . . . . . 42
8.4.1 Explanation of the Operating Parameters . . . . . . . . . . . . . . . . .42
8.4.2 Parameter Settings for Germany . . . . . . . . . . . . . . . . . . . . . . .45
8.4.3 Country-specific Parameter Settings . . . . . . . . . . . . . . . . . . . . .47
8.4.4 Fixed Parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .48
8.5 Certificate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49
8.5.1 CE Declaration of Conformity . . . . . . . . . . . . . . . . . . . . . . . . .49
8.5.2 SMA Grid Guard Certificate . . . . . . . . . . . . . . . . . . . . . . . . . .50
9 Replacing the Varistors . . . . . . . . . . . . . . . . . . . 51
10 Rating for a Line Circuit Breaker . . . . . . . . . . . . 55
11 The Communication Interface. . . . . . . . . . . . . . . 59
11.1 Connection of the Communication Interface. . . . . . . 60
11.1.1 Jumper Functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .61
12 Contact. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63

SMA Technologie AG Explanation of the Symbols Used
Installation Guide SB25_30-11:SE0307 Page 5
1 Explanation of the Symbols Used
To ensure optimum use of this document, note the following explanation of the symbols
used.
This symbol indicates an example.
This symbol indicates a note which, if ignored, will make the procedure or
operation more difficult.
This symbol indicates a fact which, if not observed, could result in damage
to components or represent a danger to persons. Read these passages
especially carefully.