SMA Sunny Boy SB 2500 Installation Manual
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SMA Sunny Boy SB 2500 Installation Manual

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

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Summary of Contents for SMA Sunny Boy SB 2500

  • Page 1 Sunny Boy SB 2500 and SB 3000 String Inverter for Photovoltaic Plants Installation Guide Version 1.0 SB25_30-11:SE0307 IMEN-SB25_30...

  • Page 3: Table Of Contents

    Technical Data ......35 Sunny Boy SB 2500 ..... . . 35 8.1.1...
  • Page 4 8.5.2 SMA Grid Guard Certificate ......50 Replacing the Varistors ....51 Rating for a Line Circuit Breaker .

  • Page 5: Explanation Of The Symbols Used

    Technologie AG Explanation of the Symbols Used 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.
  • Page 6 Explanation of the Symbols Used Technologie AG Page 6 SB25_30-11:SE0307 Installation Guide...

  • Page 7: Foreword

    Technologie AG Foreword 2 Foreword The Sunny Boy is equipped with the SMA grid guard. This is a type of automatic disconnection device. This means that the Sunny Boy complies with the VDEW (Verband der Elektrizitätswirtschaft – German Electricity Industry Association)

  • Page 8: Appropriate Usage

    SMA. 2.3 Validity of Documentation The Sunny Boy SB 2500 and Sunny Boy SB 3000 are identical in construction and only differ in their technical data. This documentation uses the terms Sunny Boy or inverter when referring to either device type. The device will be specified with its full name if the information only refers to that particular device.

  • Page 9: Safety Instructions

    Safety Instructions 3 Safety Instructions Warning! Overvoltage! Check the system design using the Sunny Design tool (www.SMA.de) or by calling the Sunny Boy Hotline. Overvoltages lead to the destruction of the Sunny Boy. Warning! High voltage! Work on the Sunny Boy with the cover removed must be carried out by a qualified electrician! High voltages are present in the device.
  • Page 10 Safety Instructions Technologie AG Page 10 SB25_30-11:SE0307 Installation Guide...

  • Page 11: Overview

    Technologie AG Overview 4 Overview 4.1 Unit Description The following diagram gives a schematic overview of the various components and connection points inside the Sunny Boy with the cover removed: Varistors, section 9 Communication socket Communication socket (RS232, RS485, NLM Piggy-Back, radio), section 11 Sunny Display Operating status...

  • Page 12: External Dimensions

    Overview Technologie AG 4.2 External Dimensions 225 mm 470 mm 490 mm Page 12 SB25_30-11:SE0307 Installation Guide...

  • Page 13: Installation Requirements

    Check that all of the requirements listed below are met before installing and commissioning the Sunny Boy. 5.1 Installation Location Requirements The Sunny Boy SB 2500 weighs 30 kg, the Sunny Boy SB 3000 weighs 32 kg. Take this weight into account when choosing the installation location and method of installation.
  • Page 14 Installation Requirements Technologie AG When choosing the installation location, be sure to observe the following: Warning, high voltage! Unintentionally pulling out the DC plug connectors under load can damage the plugs and could result in personal injury! Install the Sunny Boy in such a way that it is not possible (e.g.

  • Page 15: Pv Generator Requirements

    The connecting cables from the PV generators must also be fitted with this type of plug connector. A pre-assembled set for connecting the free cable ends from a string is available as an optional accessory. The SMA order codes for the various connectors are as follows: •...
  • Page 16 Installation Requirements Technologie AG Rating for a Line Circuit Breaker in a Photovoltaic Power Generating System Operated in Parallel to the Low Voltage Grid Various factors should be taken into account when selecting line circuit breakers. These include, for example: •...
  • Page 17 Multi-wire cables with copper forward and return conductors are used. Output Losses of the Sunny Boy SB 2500 Do not use cables where losses will exceed 1.0 %...
  • Page 18 Installation Requirements Technologie AG Output Losses of the Sunny Boy SB 3000 Do not use cables where losses will exceed 1.0 % Cable length Cable cross-section 1.5 mm² 2.5 mm² Max. length 7.5 m 12.5 m Page 18 SB25_30-11:SE0307 Installation Guide...
  • Page 19 Technologie AG Installation Requirements The Sunny Boy is designed for operation on 220 - 240 V grids at a grid frequency of 50 / 60 Hz. When connecting an inverter to the public grid, follow the connection requirements of the local grid operator. Limit values for AC output Voltage range (complying with DIN VDE 198 V ...
  • Page 20 Installation Requirements Technologie AG Page 20 SB25_30-11:SE0307 Installation Guide...

  • Page 21: Installation

    Technologie AG Installation 6 Installation 6.1 Mounting the Device To make the job easier, we recommend you use the supplied wall bracket to mount the Sunny Boy. For vertical installation and installation on solid concrete or block walls, for example, you can fit the bracket using 6 mm x 50 mm hexagon bolts to DIN 571 standard, stainless steel type, and with wall anchors type SX 8.

  • Page 22: Electrical Installation

    Installation Technologie AG Mount the wall bracket (1). To mark the positions to drill the holes, you can use the wall bracket as a drilling template. Now hang the Sunny Boy onto the wall bracket (2) using its upper mounting plate so that it cannot be moved sideways.

  • Page 23: View From Below

    Technologie AG Installation View from below Opening for the optional AC plug for the grid Electronic Solar Switch connection Plug and socket Opening for optional connector for communication via connection of the RS232, RS485 or solar modules radio (PG16) Installation Guide SB25_30-11:SE0307 Page 23...

  • Page 24: Connecting The Ac Output

    Installation Technologie AG 6.2.1 Connecting the AC Output Warning! Voltage! Before you connect the mains cable to the AC connection socket, make sure that no voltage is present at the cable. A round plug connector system is used, which allows various cable diameters to be used in the cable outlet.
  • Page 25 Technologie AG Installation Now take the AC connection socket parts from the accessories kit and connect up the cable, with shielding and insulation stripped, as described on the following pages. Cord grip for PG13.5 Pressure screw for PG13.5 Sealing ring for PG13.5 Threaded sleeve Socket element...
  • Page 26 Installation Technologie AG Connecting the AC Output with PG13.5 To connect a cable with a maximum cross-section of 13.5 mm², proceed as follows. Press the sealing ring (1) into the cord grip (2). Now slide the pressure screw (3) over the cable first of all, followed by the cord grip with the sealing ring (4) in it.
  • Page 27 Technologie AG Installation Now screw the threaded sleeve (7) onto the socket element (8) and tighten it. Now screw the pressure screw (9) (10) into the threaded sleeve (10) and tighten it. The cord grip with the sealing ring is pressed into the threaded sleeve and can no longer be seen.
  • Page 28 Installation Technologie AG Connecting the AC Output with PG16 To connect a cable with a cross-section between 13.5 mm² and 16 mm², proceed as follows. First of all, slide the pressure screw with the PG16 screw fitting (1) onto the cable. Now slide the threaded sleeve (2) over the cable.
  • Page 29 Technologie AG Installation Now screw the pressure screw (6) into the threaded sleeve (7) and tighten it. Firmly tighten the screw fitting against the seal and strain relief. The AC connection socket is now fully assembled. If you are not going to connect up the Sunny Boy immediately, close the socket element using the cap supplied in the accessories kit.

  • Page 30: Pv String (Dc) Connection

    Installation Technologie AG 6.2.2 PV String (DC) Connection To connect up the input, follow these steps: Make sure the PV generator connectors have the right polarity and do not exceed the maximum string voltage of 600 V (DC). See also section 5.2 "PV Generator Requirements" (Page 15).

  • Page 31: Commissioning

    If despite checking the string voltages the LED signal occurs again when the PV generator is connected to the Sunny Boy, disconnect the PV generator from the Sunny Boy again and contact SMA Technologie AG (see section 12 "Contact" (Page 63)). Installation Guide...
  • Page 32 Installation Technologie AG Green Yellow Status shines continuously is not shining is not shining OK (working mode) shines continuously is not shining failure shines continuously OK (initialization) flashes quickly is not shining is not shining OK (stop) (3 x per second) shines continuously is not shining failure...

  • Page 33: Opening And Closing The Sunny Boy

    Technologie AG Opening and Closing the Sunny Boy 7 Opening and Closing the Sunny Boy Warning! If you need to open the device for whatever reason, pay attention to section 3 "Safety Instructions" (Page 9). 7.1 Opening the Sunny Boy Warning! Follow the sequence below under all circumstances! Switch the line circuit breaker to the "off"...
  • Page 34 Opening and Closing the Sunny Boy Technologie AG Page 34 SB25_30-11:SE0307 Installation Guide...

  • Page 35: Technical Data

    Technologie AG Technical Data 8 Technical Data 8.1 Sunny Boy SB 2500 8.1.1 PV Generator Connection Data Description Abbr. Setting Max. input open circuit voltage 600 V (based on -10 °C cell PV 0 temperature) Input voltage, MPP range 224 V ... 600 V Max.

  • Page 36: Grid Connection Data

    Germany: 198 ... 253 / 260 V AC Operating range, grid frequency 47.55 ... 50.2 Hz All-pole isolator on grid side automatic disconnection device (SMA grid guard 2), double implementation Power factor (based on the cos phi 1 (at nominal power output)

  • Page 37: Sunny Boy Sb 3000

    Technologie AG Technical Data 8.2 Sunny Boy SB 3000 8.2.1 PV Generator Connection Data Description Abbr. Setting Max. input open circuit voltage 600 V (based on -10 °C cell PV 0 temperature) Input voltage, MPP range 268 V ... 600 V Max.

  • Page 38: Grid Connection Data

    Germany: 198 ... 253 / 260 V AC Operating range, grid frequency 47.55 ... 50.2 Hz All-pole isolator on grid side automatic disconnection device (SMA grid guard 2), double implementation Power factor (based on the cos phi 1 (at nominal power output)

  • Page 39: General Data

    IP65 Dimensions (w x h x d) 434 mm x 295 mm x 214 mm (approx.) Weight Sunny Boy SB 2500: approx. 30 kg Sunny Boy SB 3000: approx. 32 kg External interfaces Data transmission over mains power line optional...

  • Page 40: Efficiency Of The Sunny Boy Sb 2500

    94.1 % ηeuro European standard efficiency 93.2 % The efficiency of the Sunny Boy SB 2500 depends mainly on the input voltage of the connected PV strings. The lower the input voltage, the higher the efficiency. Pac [kW] Page 40...

  • Page 41: Efficiency Of The Sunny Boy Sb 3000

    Technologie AG Technical Data 8.3.2 Efficiency of the Sunny Boy SB 3000 Efficiency ηmax Max. efficiency 95 % ηeuro European standard efficiency 93,6 % The efficiency of the Sunny Boy SB 3000 depends mainly on the input voltage of the connected PV strings.

  • Page 42: Operating Parameters

    Technical Data Technologie AG 8.4 Operating Parameters 8.4.1 Explanation of the Operating Parameters Name Explanation ACVtgRPro Voltage rise protection (only relevant for Germany). Sunny Boys can feed into the public grid in Germany with up to 260 V AC. However, DIN VDE 0126-1-1 stipulates that the average AC voltage over 10 minutes must not exceed 253 V.
  • Page 43 Technologie AG Technical Data Name Explanation dFac-Max Maximum "grid frequency change" before the grid monitoring system disconnects the device from the grid. dZac Maximum "grid impedance change" before the grid monitoring system disconnects the device from the grid. E_Total Total energy yield for the inverter. This change may be necessary when you replace the Sunny Boy and want to use the data stored in the old device.
  • Page 44 Technical Data Technologie AG Name Explanation Upv-Start The DC voltage required before the inverter begins feeding power into the grid. This value is above the minimum MPP voltage which is required in order to always guarantee safe connection to the grid, and to minimize grid relay wear.

  • Page 45: Parameter Settings For Germany

    Technologie AG Technical Data 8.4.2 Parameter Settings for Germany Warning! Unauthorized changes to the operating parameters may result in: • injury or accidents as a result of changing the internal safety routines in the Sunny Boy, • voiding the Sunny Boy's operating approval certificate, •...
  • Page 46 250 ... 600 Parameters designated with * are safety-related grid monitoring parameters. To change the SMA grid guard parameters, you must enter your personal SMA grid guard password (Inst.-Code). Call the Sunny Boy Hotline to obtain your personal SMA grid guard password.

  • Page 47: Country-Specific Parameter Settings

    The parameters listed below represent country-specific settings and are only displayed in installer mode. All other parameters are international and can be viewed in the table in section 8.4.2 "Parameter Settings for Germany" (Page 45). Sunny Boy SB 2500 Name Short Country settings descr.

  • Page 48: Fixed Parameters

    Technical Data Technologie AG 8.4.4 Fixed Parameters The following parameters are displayed in the parameter list but cannot be changed: Name Short Value range descr. Sunny Boy SB 2500 Sunny Boy SB 3000 Fac-Pderating Fac-Tavg Plimit 2500 3000 SMA-SN Software-BFR...

  • Page 49: Certificate

    We declare that the above specified devices are compliant with the regulations of the European Community, in terms of the design and the version fabricated by SMA. This especially applies for the EMC Regulation defined in 89/336/EWG and the LV- regulation defined in 73/23/EWG.

  • Page 50: Sma Grid Guard Certificate

    Technical Data Technologie AG 8.5.2 SMA Grid Guard Certificate The Sunny Boy is equipped with the automatic disconnection device “SMA grid guard” which has been awarded a certificate of confidence by the Professional Association for Electric Technology and Precision Mechanics..

  • Page 51: Replacing The Varistors

    The Sunny Boy is a complex high-technology device. As a result, the possibilities for fixing faults on site are limited to just a few items. Do not attempt to carry out repairs other than those described here. Use the SMA Technologie AG 24-hour replacement service and repair service instead.
  • Page 52 Replacing the Varistors Technologie AG If the measured voltages are constant and their total is roughly the same as the open circuit voltage of the string, then there is a ground fault in this string. Its approximate location can be deduced from the relationships between the voltages.
  • Page 53 Insert the special around! If you do not receive a special tool tool to open the for operating the terminal clamps together terminal clamp with your replacement varistors, contact SMA. As an alternative, the terminal contacts Remove the operated using suitable varistor screwdriver.
  • Page 54 Sunny Boy indicates that the device is functioning correctly. If no ground fault and no defective varistor were found, there is probably a fault in the Sunny Boy. In this case, contact the SMA Hotline to discuss what to do next. Page 54 SB25_30-11:SE0307...

  • Page 55: Rating For A Line Circuit Breaker

    Failur Required Technical Data for the Inverters Used • Maximum output current = 12.5 A (Sunny Boy SB 2500) 15 A (Sunny Boy SB 3000) • Maximum permissible fuse protection for the inverter = 16 A The choice of cable together with the way it is routed, ambient temperatures and other underlying conditions limit the maximum fuse protection for the cable.
  • Page 56 Rating for a Line Circuit Breaker Technologie AG When selecting line circuit breakers, a number of load factors need to be taken into account. These can be found in the respective data sheets. Example for the thermal selection of a 16 A line circuit breaker with B sensitivity and no gap between the circuit breakers: For example, one manufacturer's circuit breaker may be designed for an ambient temperature of 50 °C.
  • Page 57 Technologie AG Rating for a Line Circuit Breaker Summary The selected line circuit breaker cannot be used in our example case since the maximum current-carrying capacity for fault-free operation is lower than the maximum output current of the inverter used. It will trip under rated operating conditions! In this case one solution would be to ensure there is an 8 mm gap between the circuit breakers.
  • Page 58 Rating for a Line Circuit Breaker Technologie AG Page 58 SB25_30-11:SE0307 Installation Guide...

  • Page 59: The Communication Interface

    Installation or replacement of the communication interface is only to be carried out by a qualified electrician. The communication interface is used to communicate with SMA communication devices (e.g. Sunny Boy Control, Sunny WebBox) or a PC with appropriate software (e.g.

  • Page 60: Connection Of The Communication Interface

    The Communication Interface Technologie AG 11.1 Connection of the Communication Interface Warning! When opening the Sunny Boy, follow all the safety instructions as described in section 3. Electrostatic discharges are an acute danger to the Sunny Boy and to the communication interface.

  • Page 61: Jumper Functions

    Technologie AG The Communication Interface 2 3 5 7 2 3 5 7 Housing feed-through in the base of the Sunny Boy Cable route (gray surface) PE connector Screw terminals for connection of the communication wires Jumper slots Interface port 11.1.1 Jumper Functions Jumper A Jumper B...
  • Page 62 The Communication Interface Technologie AG Page 62 SB25_30-11:SE0307 Installation Guide...

  • Page 63: Contact

    Technologie AG Contact 12 Contact If you have any questions or technical problems concerning the Sunny Boy, contact our hotline. Have the following information available when you contact SMA: • Inverter type • Type and number of modules connected •...

  • Page 64: Exclusion Of Liability

    The information contained in this document is the property of SMA Technologie AG. Publishing its content, either partially or in full, requires the written permision of SMA Technologie AG. Any internal company copying of the document for the purposes of evaluating the product or its correct implementation is allowed and does not require permission.
  • Page 66 Sales Solar Technology www.SMA.de SMA Technologie AG Hannoversche Strasse 1–5 34266 Niestetal, Germany Tel. : +49 561 9522 4000 Fax: +49 561 9522 4040 E-Mail: Info@SMA.de Freecall: +800 SUNNYBOY Freecall: +800 7 8 6 6 9 2 6 9 Innovation in Systems Technology...

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