SMA Sunny Boy 1700 Installation Manual
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SMA Sunny Boy 1700 Installation Manual

String inverter
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Sunny Boy 1700

String Inverter Sunny Boy 1700
Installation Guide
Version 1.1
SB1700-11:SE2006
IME-SB1700

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Summary of Contents for SMA Sunny Boy 1700

  • Page 1: Sunny Boy

    Sunny Boy 1700 String Inverter Sunny Boy 1700 Installation Guide Version 1.1 SB1700-11:SE2006 IME-SB1700...
  • Page 3 Technologie AG Explanation of Symbols used in this Document Explanation of Symbols used in this Document This symbol indicates information that is essential for a trouble-free and safe operation of the product. Please read these sections care- fully in order to avoid any damages of the equipment and for op- timal personal protection.
  • Page 4 Liability limitation: SMA Technologie AG disclaims liability for any direct or indirect consequential damages arising from the use of the software produced by SMA Technologie AG. The same applies for the provision and/or non-provision of support. Provided software not produced by SMA Technologie AG is subject to the respective licensing and liability agreements of the manufacturer.

  • Page 5: Table Of Contents

    Unit description ........11 Dimensions of the Sunny Boy 1700.....12 Installation requirements .
  • Page 6 Technologie AG Page 6 SB1700-11:SE2006 Installation Guide...

  • Page 7: Foreword

    The Sunny Boy 1700 is equipped with the SMA grid guard. This is a type of independent disconnection device. It ensures that the Sunny Boy 1700 complies with the VDEW (Verband der Elektrizitätswirtschaft –...
  • Page 8 Foreword Technologie AG Page 8 SB1700-11:SE2006 Installation Guide...

  • Page 9: Safety Information

    You must also make sure that no voltage is present in the device. The electronics inside your Sunny Boy 1700 is vulnerable in terms of electrostatic discharge. Be sure to be connected to ground (e.g.
  • Page 10 Safety information Technologie AG Page 10 SB1700-11:SE2006 Installation Guide...

  • Page 11: Overview

    Technologie AG Overview 3 Overview 3.1 Unit description The following diagram gives a schematic overview of the various components and connection points inside the Sunny Boy 1700 with the lid removed: Socket for communication Varistors (RS232, RS485, NLM Piggy- page 35...

  • Page 12: Dimensions Of The Sunny Boy 1700

    Overview Technologie AG 3.2 Dimensions of the Sunny Boy 1700 214 mm 434 mm 295 mm Page 12 SB1700-11:SE2006 Installation Guide...

  • Page 13: Installation Requirements

    The ambient temperature must be within -25 °C to +60 °C. The Sunny Boy 1700 should be installed in a place where it is not 25 kg exposed to direct sunlight. An increased ambient temperature can reduce the yield of the PV system.
  • Page 14 When choosing the installation site, ensure there is enough space for heat to dissipate. Under normal conditions, the following guidelines should be applied for the space to be kept clear around the Sunny Boy 1700: Minimum clearance Sides...

  • Page 15: Pv Generator Requirements

    Technologie AG Installation requirements 4.2 PV generator requirements The Sunny Boy 1700 is designed to be connected to up to two strings (PV modules wired in series) having a homogenous structure (modules of the same type, identical orientation and angle).
  • Page 16 Installation requirements Technologie AG We recommend using a 16 A line circuit breaker to protect the power circuit. No loads should be connected to this power circuit. Rating for a line circuit breaker in a photovoltaic electrical power unit operated in parallel with the low-voltage grid Various factors should be taken into account when selecting line circuit breakers.
  • Page 17 Technologie AG Installation requirements The system impedance at the installation site of the Sunny Boy 1700 must be less than 1 Ohms for the islanding detection and the fuses to work porperly. In addition, we recommend dimensioning the cable cross-section so that line losses do not exceed 1% at the nominal power.
  • Page 18 Installation requirements Technologie AG The Sunny Boy 1700 is designed for operation on 230 V grids and works at grid voltages of 198 V to 260 V at 49.8 Hz to 50.2 Hz. Limit values for AC output Voltage range 198 V ...

  • Page 19: Installation

    Fit the wall bracket (1). To mark the positions to drill the holes, you can use the wall bracket as a drilling template. Now hook the Sunny Boy 1700 onto the wall bracket (2) at its upper mounting plate so that it cannot be moved sideways.

  • Page 20: Electrical Installation

    Installation Technologie AG 5.2 Electrical installation Check the correct polarity before you connect the PV-strings! The complete wiring for a Sunny Boy 1700 is shown schematically in the following diagram: max. 2,5 mm Communication String 1 String 2 Page 20...
  • Page 21 AC cable. To connect up the AC output, follow these steps: Check the grid voltage. If this is higher than 260 V, the Sunny Boy 1700 will not be fully operational. In this case, contact the local grid operator for assistance.
  • Page 22 Installation Technologie AG Connecting the AC output with PG13.5 To connect a cable with a maximum diameter of 13.5 mm, proceed as follows. Press the sealing ring into the cord grip. Cord grip Sealing ring Now slide the pressure screw over the cable first of all, followed by the cord grip with the sealing ring in it.
  • Page 23 Sunny Boy. Firmly tighten the threaded ring on the AC connecting socket to the plug to seal the connection and secure it. Do not switch the line circuit breaker on yet! The Sunny Boy 1700 may only be connected to the AC grid once the PV strings are connected and the device is securely closed.
  • Page 24 Installation Technologie AG Connecting the AC plug with PG16 To connect a cable with a diameter between 13.5 mm and 16 mm, proceed as follows. First of all, slide the pressure screw with the PG16 screw fitting onto the cable. Now slide the threaded sleeve over the cable.
  • Page 25 Sunny Boy. Firmly tighten the threaded ring on the AC connecting socket to the plug to seal the connection and secure it. Do not switch the line circuit breaker on yet! The Sunny Boy 1700 may only be connected to the AC grid once the PV strings are connected and the device is securely closed.
  • Page 26 Do not connect strings to the Sunny Boy 1700 that contain a earth fault until you have fixed the earth fault in the PV generator. Repeat points 2 and 3 for each string.

  • Page 27: Startup

    If the bottom yellow LED flashes four times at intervals of one second, the grid voltage and the PV generator must be disconnected from the Sunny Boy 1700 immediately! There is a risk of damage to the inverter resulting from excessive DC input voltage.
  • Page 28 Installation Technologie AG Green Yellow Status OK (feeding grid) failure OK (initialisation) OK (stop) blinking quickly (3 x per second) failure OK (waiting, grid on / blinking monitoring) (1 x per second) failure on / blinking OK (derating) (shortly off 1 x failure per second) OK (night)

  • Page 29: Opening And Closing The Sunny Boy

    1700 by tightening the four screws. Connect the PV generator. Switch the line circuit breaker to the "on" position. Now check whether the LED display on the Sunny Boy 1700 indicates that the device is functioning correctly. Installation Guide SB1700-11:SE2006...
  • Page 30 Opening and closing the Sunny Boy Technologie AG Page 30 SB1700-11:SE2006 Installation Guide...

  • Page 31: Technical Data

    Technologie AG Technical data 7 Technical data 7.1 PV generator connection data Max. input open circuit voltage 400 V (based on -10 °C cell PV 0 temperature) Input voltage, MPP range 139 V ... 400 V Max. input current 12.6 A PV max Max.

  • Page 32: Device Description

    European standard efficiency 91.8 % eur o The efficiency of the Sunny Boy 1700 depends mainly on the input voltage of the connected PV strings. The lower the input voltage the higher is the efficiency of the Sunny Boy 1700.

  • Page 33: Sunny Boy 1700 Operating Parameters

    Technologie AG Technical data 7.4 Sunny Boy 1700 Operating parameters Unauthorised 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 permission •...
  • Page 34 Unit Value range Factory Description setting Plimit 1700 Upper limit for AC output power SMA-SN Serial number of the Sunny Boy Software-BFR / Firmware version of the operation control Firmware-BFR unit (BFR) Software-SRR / Firmware version of the current control...

  • Page 35: Replacing The Varistors

    Replacing the varistors 8 Replacing the varistors The Sunny Boy 1700 is a complex high-technology device. As a result, the possibilities for fixing faults on site are limited to just a few items. Please don't try to carry out repairs other than those described here. Use the SMA Technologie AG 24- hour exchange service and repair service instead.
  • Page 36 Using a continuity tester, check all the varistors to see if there is a conducting connection between connectors 2 and 3. If there isn't, then that varistor is not working. The positions of the varistors in the Sunny Boy 1700 can be seen in the diagram in section 3.1 "Unit description" (page 11).
  • Page 37 Sunny Boy 1700 indicates that the device is functioning correctly. If no earth 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. Installation Guide SB1700-11:SE2006...
  • Page 38 Replacing the varistors Technologie AG Page 38 SB1700-11:SE2006 Installation Guide...

  • Page 39: Rating For A Line Circuit Breaker

    Example for the thermal rating for a line circuit breaker in a photovoltaic electrical power unit operated in parallel with the low-voltage grid We assume a PV system with 9 Sunny Boy 1700 inverters, with three inverters per phase. Betrie...
  • Page 40 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 10 A line circuit breaker with B sensitivity with no gap between the circuit breakers: For example, one manufacturer's circuit breaker may be designed for an ambient temperature of 50 °C.
  • Page 41 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. In this case one solution would be to ensure there is an 8 mm gap between the circuit breakers.
  • Page 42 Rating for a line circuit breaker Technologie AG Page 42 SB1700-11:SE2006 Installation Guide...

  • Page 43: Contact

    Technologie AG Contact 10 Contact If you have any questions or technical problems concerning the Sunny Boy 1700, please contact our hotline. Please have the following information available when you contact SMA: • Inverter type • Type and number of connected modules •...
  • Page 44 Contact Technologie AG Page 44 SB1700-11:SE2006 Installation Guide...
  • Page 48 Technologie AG SMA Technologie AG www.SMA.de Hannoversche Straße 1–5 34266 Niestetal Germany Tel. +49 561 9522 0 info@SMA.de SMA Solartechnology China Vertrieb SMA Italien International Metro Center, Via Lorenzo Valla, 16 Building A, City Square No. Jia 3, 20141 Milano...

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