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

Pv inverter
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PV Inverter
SUNNY BOY 2500 / 3000
Installation Guide
SB25_30-IEN100930 | IMEN-SB25_30 | Version 3.0
EN

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Summary of Contents for SMA Sunny Boy 2500

  • Page 1 PV Inverter SUNNY BOY 2500 / 3000 Installation Guide SB25_30-IEN100930 | IMEN-SB25_30 | Version 3.0...

  • Page 3: Table Of Contents

    SMA Solar Technology AG Table of Contents Table of Contents Notes on this Manual......6 Scope of Validity.
  • Page 4 Table of Contents SMA Solar Technology AG PV generator connection (DC) ......27 5.4.1 Conditions for the DC Connection ....... . 27 5.4.2...
  • Page 5 SMA Solar Technology AG Table of Contents Decommissioning ....... . 58 10.1...

  • Page 6: Notes On This Manual

    You will find further information on special topics such as designing a line circuit breaker or the description of the operating parameters in the download area at www.SMA.de/en. Refer to the user manual for detailed information on operating the inverter.

  • Page 7: Symbols Used

    SMA Solar Technology AG Notes on this Manual 1.4 Symbols Used The following types of safety precautions and general information are used in this manual: DANGER! "DANGER" indicates a hazardous situation which, if not avoided, will result in death or serious injury.

  • Page 8: Safety

    The free design program "Sunny Design" (www.SMA.de/en/SunnyDesign) will assist you. The manufacturer of the PV modules must have approved the modules for use with this Sunny Boy device. You must also ensure that all measures recommended by the module manufacturer for long-term maintenance of the module properties are taken (see also Technical Information "Module Technology", in the download area of...
  • Page 9 SMA Solar Technology AG Safety Certified Countries The Sunny Boy 2500 / 3000 (with according configuration) fulfill the requirements specified in the following standards and directives (dated: April/2010): • AS4777 (2005) • C10/C11 (05.2009) • CER/06/190 (10.2006) • DK 5940 Ed.2.2 (02.2006) •...

  • Page 10: Safety Precautions

    Grounding the PV Generator Comply with the local requirements for grounding the modules and the PV generator. SMA Solar Technology AG recommends connecting the generator frame and other electricity conducting surfaces so that there is continuous conduction and to ground them in order to achieve maximum protection of the system and personnel.

  • Page 11: Explanation Of Symbols

    SMA Solar Technology AG Safety 2.3 Explanation of Symbols This chapter contains an explanation of all symbols found on the inverter and type label. 2.3.1 Symbols on the Inverter Symbol Explanation Operation display. Indicates the operation condition of the inverter. Ground fault or varistor defective.

  • Page 12: Symbols On The Type Label

    Safety SMA Solar Technology AG 2.3.2 Symbols on the Type Label Symbol Explanation Beware of dangerous electrical voltage. The inverter operates at high voltages. All work on the inverter must be carried out by qualified personnel only. Beware of hot surface.

  • Page 13: Unpacking

    SMA Solar Technology AG Unpacking 3 Unpacking 3.1 Scope of Delivery Check the delivery for completeness and for any visible external damage. Contact your dealer if anything is damaged or missing. Object Quantity Description Sunny Boy Wall mounting bracket Electronic Solar Switch (ESS)

  • Page 14: Identifying The Inverter

    Unpacking SMA Solar Technology AG 3.2 Identifying the Inverter You can identify the inverter by the type label. The type label is on the right side of the enclosure. The serial number (Serial no.) and the type (Type / Model) of the product, as well as device-specific characteristics are specified on the type label.

  • Page 15: Installing The Device

    SMA Solar Technology AG Installing the Device 4 Installing the Device 4.1 Safety DANGER! Danger to life due to fire or explosion! Despite careful construction, electrical devices can cause fires. • Do not mount the inverter on flammable construction materials. • Do not mount the inverter in areas where highly flammable materials are stored.
  • Page 16 Installing the Device SMA Solar Technology AG • The connection area must point downward. • Never install the device with a forward tilt. • Do not install horizontally. • Install at eye level so that operating statuses can be read at all times.

  • Page 17: Mounting The Inverter With Wall Mounting Bracket

    SMA Solar Technology AG Installing the Device 4.3 Mounting the Inverter with Wall Mounting Bracket CAUTION! Risk of injury due to the heavy weight of the inverter. • Take the inverter's weight of approx. 32 kg into account for mounting. • When mounting the bracket, use fastening material suitable for the material.
  • Page 18 Installing the Device SMA Solar Technology AG 3. Use the upper mounting clips to fit the inverter in the wall mounting bracket so that it cannot be pushed out of the wall mounting bracket from the side. 4. Use the M6x12 screws provided to fix the inverter and prevent it from being lifted out of place.

  • Page 19: Electrical Connection

    SMA Solar Technology AG Electrical Connection 5 Electrical Connection NOTICE! Electrostatic discharges can damage the inverter! Internal components of the inverter can be irreparably damaged by static discharge. • Ground yourself before touching a component. 5.1 Overview of the Connection Area 5.1.1 Exterior View The following figure shows the assignment of the individual connection areas on the bottom of the inverter.

  • Page 20: Interior View

    Electrical Connection SMA Solar Technology AG 5.1.2 Interior View The following illustration shows the various components and connection areas of the open inverter. Object Description Varistors Connection area and sockets for optional communication via RS485 or radio Display Operating status LEDs...

  • Page 21: Connection To The Public Grid (Ac)

    SMA Solar Technology AG Electrical Connection 5.2 Connection to the Public Grid (AC) 5.2.1 Conditions for the AC Connection Connection requirements of the utility operator Comply with the connection requirements of your utility operator. Cable Sizing The conductor cross-sectional area should be dimensioned so output losses do not exceed 1 % at nominal power.
  • Page 22 The maximum permissible rating is located in section 11 ”Technical Data” (page 60). Detailed information and examples for the rating of a line circuit breaker can be found in the Technical Information "Line Circuit Breaker" in the SMA Solar Technology AG download area at www.SMA.de/en. DANGER! Danger to life due to fire.

  • Page 23: Connecting The Inverter To The Public Grid (Ac)

    AC nom The exact operating range of the inverter is specified in the operating parameters. The corresponding document is located in the download area at www.SMA.de/en, in the "Technical Description" category of the respective inverter. 3. Switch off the line circuit breaker, protect against reconnection, and make sure no voltage is present.
  • Page 24 Electrical Connection SMA Solar Technology AG 6. Strip 4 to 5 mm of insulation from the AC cable. 7. Pass the pressure screw and/or cable gland and socket tube over the AC cable. Size used Procedure PG13.5 • Push the sealing ring into the fastening case.
  • Page 25 SMA Solar Technology AG Electrical Connection 12. Make sure the wires are securely connected. 13. Screw the threaded sleeve onto the socket element. 14. Tighten the pressure screw or cable gland tightly onto the threaded sleeve. Size used Procedure PG13.5 The fastening case along with the sealing ring is pressed into the threaded sleeve and can no longer be seen.

  • Page 26: Setting The Display Language

    Electrical Connection SMA Solar Technology AG 15. If the AC connection socket is not immediately connected to the inverter, close the AC plug on the inverter with the protective cap provided. 16. Insert the AC connection socket into the AC socket on the inverter.

  • Page 27: Pv Generator Connection (Dc)

    SMA Solar Technology AG Electrical Connection 5.4 PV generator connection (DC) 5.4.1 Conditions for the DC Connection Use of Adaptors Adaptors (branch connectors) are not to be visible or freely accessible in the immediate surroundings of the inverter. • The DC current flow may not be interrupted via adaptors.

  • Page 28: Assembling The Dc Plug Connector

    Electrical Connection SMA Solar Technology AG 5.4.2 Assembling the DC Plug Connector In order to connect to the inverter, all connecting cables of the PV modules must be equipped with the DC plug connectors provided. To assemble the DC plug connectors, proceed as detailed below. Ensure the plug connectors have the correct polarity.
  • Page 29 SMA Solar Technology AG Electrical Connection Result Action ☑ If the conductors are not visible in the • Loosen the clamping clip using a hollow cavity of the clamp, the cable is not screwdriver. in the correct position. • Remove cable and start again from step 1.

  • Page 30: Opening The Dc Plug Connector

    Electrical Connection SMA Solar Technology AG 5.4.3 Opening the DC Plug Connector 1. Screw the threaded joint off. 2. To release the plug connector, slot a screw driver into the side catch mechanism and lever out. 3. Carefully pull the DC plug connector apart.

  • Page 31: Connecting The Pv Generator (Dc)

    SMA Solar Technology AG Electrical Connection 5.4.4 Connecting the PV Generator (DC) DANGER! Danger to life due to high voltages in the inverter. • Before connecting the PV generator, ensure that the line circuit breaker is switched off. NOTICE! Excessive voltages can destroy the measuring device.
  • Page 32 Electrical Connection SMA Solar Technology AG 4. Check the strings for ground faults, as described in section 9.3.1 ”Checking the PV Generator for a Ground Fault” (page 53). DANGER! Risk of lethal electric shock. • Do not connect strings with ground faults.
  • Page 33 SMA Solar Technology AG Electrical Connection 7. Check the Electronic Solar Switch for wear, as described in section 8.1 ”Checking the Electronic Solar Switch for Wear” (page 47) and reattach it firmly. NOTICE! Manipulating the connector in the handle can damage the Electronic Solar Switch.

  • Page 34: Communication

    To change grid-relevant parameters, you need a personal access code - the so-called SMA Grid Guard Code. The application form for the personal access code is located in the download area at www.SMA.de/en, in the "Certificate" category for each inverter.

  • Page 35: Setting Stand-Alone Grid Operation

    SMA Solar Technology AG Electrical Connection 5.6.2 Setting Stand-alone Grid Operation To operate the inverter in a Sunny Island system, you must set the inverter via the "Default" parameter to off-grid ("OFF-Grid") operation. You have several possibilities to set the inverter to stand-alone grid operation: •...

  • Page 36: Commissioning

    Commissioning SMA Solar Technology AG 6 Commissioning 6.1 Commissioning the Inverter Self test in accordance with DK 5940, Ed. 2.2 for initial commissioning (applies to Italy only) The Italian DK 5940 standard requires that an inverter can first operate on the power distribution grid when the disconnection times for overvoltage, undervoltage, minimum frequency and maximum frequency have been checked.

  • Page 37: Self-Test In Accordance With Dk 5940, Ed

    SMA Solar Technology AG Commissioning 6.2 Self-Test in accordance with DK 5940, Ed. 2.2 (applies to Italy only) 6.2.1 Starting the Self-Test by Tapping You can start testing the disconnection times by tapping on the enclosure lid. Prerequisite here is that the country configuration of the inverter has been set to Italy (IT/DK5940) or "trimmed". Proceed as follows for checking the disconnection times: 1.
  • Page 38 Commissioning SMA Solar Technology AG Overvoltage Test The inverter begins with the overvoltage test. During the test sequence, the voltage limit applied is shown in the display of the inverter. The voltage limit is reduced successively until the shut-down threshold is achieved and the inverter disconnects from the grid.
  • Page 39 SMA Solar Technology AG Commissioning Undervoltage Test After the overvoltage test, the inverter performs the undervoltage test. During the test sequence, the current calibration value of the voltage limit applied is shown in the display of the inverter. The voltage limit is increased successively until the shut-down threshold is achieved and the inverter disconnects from the grid.

  • Page 40: Maximum Frequency

    Commissioning SMA Solar Technology AG Maximum Frequency In the third step, the inverter tests the maximum frequency. During the test sequence, the frequency limit applied is shown in the display of the inverter. The frequency limit is reduced successively until the shut-down threshold is achieved and the inverter disconnects from the grid.
  • Page 41 SMA Solar Technology AG Commissioning Minimum Frequency In the last step, the inverter tests the minimum frequency. During the test sequence, the frequency limit applied is shown in the display of the inverter. The frequency limit is increased successively until the shut-down threshold is achieved and the inverter disconnects from the grid.

  • Page 42: Opening And Closing

    Opening and Closing SMA Solar Technology AG 7 Opening and Closing 7.1 Safety DANGER! Risk of lethal electric shock. Observe the following before opening the inverter: • Ensure the AC side is not live. • Ensure the DC side is not live.
  • Page 43 SMA Solar Technology AG Opening and Closing 4. Release all DC plug connectors using a screwdriver: – Insert a screwdriver into one of the side slits (1). – Lever the screwdriver upward (2) and pull out the plug connector (3).
  • Page 44 Opening and Closing SMA Solar Technology AG 6. Check whether all LEDs and the display have gone out. DANGER! Danger to life due to high voltages in the inverter. The capacitors in the inverter require 15 minutes to discharge. • Wait 15 minutes before opening the inverter.

  • Page 45: Closing The Inverter

    SMA Solar Technology AG Opening and Closing 7.3 Closing the Inverter 1. Reconnect the protective conductor (PE) connection to the enclosure lid. 2. Secure the enclosure lid of the inverter by evenly tightening the 4 lid screws. 3. Check the DC plug connector for correct polarity and connect it.
  • Page 46 Opening and Closing SMA Solar Technology AG 6. Check the Electronic Solar Switch for wear, as described in section 8.1 ”Checking the Electronic Solar Switch for Wear” (page 47) and reattach it firmly. NOTICE! Manipulating the connector in the handle can damage the Electronic Solar Switch.

  • Page 47: Maintenance And Cleaning

    SMA Solar Technology AG Maintenance and Cleaning 8 Maintenance and Cleaning Check for proper inverter operation at regular intervals. Impurities such as dust or pollen can cause heat accumulation that can lead to yield losses. Also check the inverters and the cables for visible external damage.

  • Page 48: Failure Search

    Do not try to carry out repairs other than those described here. Instead, use the SMA Solar Technology AG 24-hour replacement service (the inverter will be ready for dispatch within 24 hours and sent to a forwarding agency) and repair service 9.1 Blink Codes...

  • Page 49: Error Messages

    • If the grid voltage is continually within the acceptable range, and this error is still displayed, contact the SMA Serviceline. Bfr-Srr Internal measurement comparison fault or hardware defect. Corrective measures • If this fault occurs often, contact the SMA Serviceline. Installation Guide SB25_30-IEN100930...
  • Page 50 • Check the system design and grid conditions. K1-Close Fault during relay test. Corrective measures K1-Open • Contact the SMA Serviceline if this problem occurs often or several times in succession. MSD-Fac Internal measurement comparison fault or hardware defect. Corrective measures MSD-Vac •...
  • Page 51 • Check the plant for ground faults as described in section 9.3.1 ”Checking the PV Generator for a Ground Fault” (page 53). The inverter's firmware is faulty. Corrective measures • If this fault occurs often, contact the SMA Serviceline. Shutdown Temporary inverter fault. Corrective measures •...

  • Page 52: Red Led Is Glowing Continuously

    Internal program run fault. Corrective measures Watchdog-Srr • If this fault occurs often, contact the SMA Serviceline. 9.3 Red LED is Glowing Continuously If the red LED of the status display is continuously on during operation, there is either a ground fault in the PV generator or at least one of the varistors for the overvoltage protection is defective.

  • Page 53: Checking The Pv Generator For A Ground Fault

    SMA Solar Technology AG Failure Search 9.3.1 Checking the PV Generator for a Ground Fault 1. Disconnect the inverter from both the DC and AC connections as described in section 7.2 ”Opening the Inverter” (page 42). DANGER! Risk of lethal electric shock. • Only touch the cables of the PV generator on their insulation.
  • Page 54 Failure Search SMA Solar Technology AG Result Action ☑ You have found a ground fault. • The installer of the PV generator must remedy the ground fault in the affected string. • Do not reconnect the faulty string. • Close the inverter and commission it as described in section 7.3 ”Closing the Inverter”...

  • Page 55: Checking The Functioning Of The Varistors

    SMA Solar Technology AG Failure Search 9.3.2 Checking the Functioning of the Varistors Varistors are wear parts. Their functional efficiency diminishes with age or following repeated responses as a result of overvoltages. It is therefore possible that one of the thermally monitored varistors has lost its protective function, and thus the red LED is lit.
  • Page 56 The varistors are specially manufactured for use in the inverter and are not commercially available. They must be ordered directly from SMA Solar Technology AG (see section 12 ”Accessories” (page 66)). • To replace the varistors, proceed to step 3.

  • Page 57: Checking The Insulation Resistance

    3. Close the inverter as described in section 7.3 ”Closing the Inverter” (page 45). 4. If the red LED is glowing, contact the SMA Serviceline (see section 13 ”Contact” (page 67)). ☑ You have now finished checking the insulation resistance. Installation Guide...

  • Page 58: Decommissioning

    Decommissioning SMA Solar Technology AG 10 Decommissioning 10.1 Dismantling the Inverter CAUTION! Risk of injury due to the heavy weight of the inverter. • Remember that the inverter weighs approx. 32 kg. 1. Open the inverter as described in section 7.2 ”Opening the Inverter” (page 42).

  • Page 59: Packing The Inverter

    Dispose of the inverter at the end of its service life in accordance with the disposal regulations for electronic waste which apply at the installation site at that time. Alternatively, send it back to SMA Solar Technology AG with shipping paid by sender, and labeled "ZUR ENTSORGUNG" ("for disposal") (see sectio n 13 ”Contact” (page 67)).

  • Page 60: Technical Data

    Technical Data SMA Solar Technology AG 11 Technical Data 11.1 SB 2500 DC Input Maximum DC power at cos ϕ = 1 2,700 W Maximum DC voltage * 600 V DC max MPP voltage range at 230 V AC 224 V ... 480 V...

  • Page 61: Mechanical Data

    > 1 M Ω ) Insulation monitoring Pole confusion protection Short circuit diode AC short circuit protection Current control All-pole AC disconnection unit Automatic disconnection device SMA Grid Guard 2.1, double design Communication Interfaces ® Bluetooth Wireless Technology Optional RS485, galvanically isolated Optional...
  • Page 62 Technical Data SMA Solar Technology AG Electronic Solar Switch (ESS) Electrical service life in the event of a short circuit, A minimum of 50 switching operations with a nominal current of 35 A Maximum switching current 35 A Maximum switching voltage...

  • Page 63: Sb 3000

    SMA Solar Technology AG Technical Data 11.2 SB 3000 DC Input Maximum DC power at cos ϕ = 1 3,200 W Maximum DC voltage * 600 V DC max MPP voltage range at 230 V AC 268 V ... 480 V...

  • Page 64: Climatic Conditions

    > 1 M Ω ) Insulation monitoring Pole confusion protection Short circuit diode AC short circuit protection Current control All-pole AC disconnection unit Automatic disconnection device SMA Grid Guard 2.1, double design Communication Interfaces RS485, galvanically isolated Optional Radio Optional Bluetooth Optional...
  • Page 65 SMA Solar Technology AG Technical Data Electronic Solar Switch (ESS) Electrical service life in the event of a short circuit, A minimum of 50 switching operations with a nominal current of 35 A Maximum switching current 35 A Maximum switching voltage...

  • Page 66: Accessories

    SMA Solar Technology AG 12 Accessories You will find the corresponding accessories and replacement parts for your product In the following overview. If required, you can order these from SMA Solar Technology AG or your dealer. Description Brief description SMA order number...

  • Page 67: Contact

    SMA Solar Technology AG Contact 13 Contact If you have technical problems concerning our products, contact the SMA Serviceline. We require the following information in order to provide you with the necessary assistance: • Inverter type • Inverter serial number • Type and number of PV modules connected •...

  • Page 71: Exclusion Of Liability

    The use of supplied software produced by SMA Solar Technology AG is subject to the following conditions: • SMA Solar Technology AG rejects any liability for direct or indirect damages arising from the use of software developed by SMA Solar Technology AG. This also applies to the provision or non-provision of support activities.

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