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

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PV Inverter
SUNNY BOY 2500/3000
Installation Manual
SB25-30-IA-en-51 | IMEN-SB25_30 | Version 5.1
EN

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Summary of Contents for SMA Sunny Boy 2500

  • Page 1 PV Inverter SUNNY BOY 2500/3000 Installation Manual SB25-30-IA-en-51 | IMEN-SB25_30 | Version 5.1...

  • Page 3: Table Of Contents

    SMA Solar Technology AG Table of Contents Table of Contents Information on this Manual......7 Validity ..........7 Target Group .
  • Page 4 Table of Contents SMA Solar Technology AG Setting the Display Language ......28 PV Array Connection (DC) ......28 5.4.1...

  • Page 5: Table Of Contents Sb25-30-Ia-En-51

    11.1 Sunny Boy 2500 ........62 11.2...
  • Page 6 Table of Contents SMA Solar Technology AG SB25-30-IA-en-51 Installation Manual...

  • Page 7: Information On This Manual

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

  • Page 8: Symbols Used

    Information on this Manual SMA Solar Technology AG 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 9: Safety

    Do not use the Sunny Boy for purposes other than those described here. Alternative uses, modifications to the Sunny Boy or the installation of component parts not expressly recommended or sold by SMA Solar Technology AG shall void any warranty claims and the operation permission. Installation Manual...

  • Page 10: Safety Precautions

    Safety SMA Solar Technology AG 2.2 Safety Precautions DANGER! Danger to life due to high voltages in the inverter • All work on the inverter may only be carried out by an electrically qualified person. CAUTION! Risk of burns due to hot enclosure parts •...
  • Page 11 PV array earthing Comply with local regulations when earthing the modules and the PV array. SMA Solar Technology AG recommends connecting the array frame and other electrically conductive surfaces so that there is continuous conduction and to earth them in order to ensure maximum protection for installations and persons.

  • Page 12: Explanation Of Symbols

    Section 7.2 "Opening the Inverter" (page 44). QR-Code *** for SMA bonus program ® You will find information on the SMA bonus programme at www.SMA-Bonus.com. * This function is valid from firmware version 4.00, not for SB 2500-IT/3000-IT ** Optional *** QR-Code is a registered trademark of DENSO WAVE INCORPORATED.

  • Page 13: Symbols On The Type Label

    SMA Solar Technology AG Safety 2.3.2 Symbols on the Type Label Symbol Explanation Beware of hazardous voltage. The inverter operates at high voltages. All work on the inverter may only be carried out by an electrically qualified person. Beware of hot surface.

  • Page 14: Unpacking

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

  • Page 15: Identifying The Inverter

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

  • Page 16: Mounting

    Mounting SMA Solar Technology AG 4 Mounting 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 17 SMA Solar Technology AG Mounting • The connection area must point downward. • Never mount the device with a forward tilt. • Never mount the device with a sideways tilt. • Do not mount horizontally. • Install at eye level in order to allow operating states to be read at all times.

  • Page 18: Mounting The Inverter With The Wall Mounting Bracket

    Mounting SMA Solar Technology AG 4.3 Mounting the Inverter with the 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. • Use mounting material suitable for the surface when attaching the wall mounting bracket.
  • Page 19 SMA Solar Technology AG Mounting 3. Mount the inverter with its upper anchorage bracket on the wall mounting bracket in such a way that it cannot slide out of the bracket sideways. 4. If a second protective conductor is required in the country of installation, earth the inverter and fix it securely as described in Section 5.2.3 "Connecting...

  • Page 20: Electrical Connection

    Electrical Connection SMA Solar Technology AG 5 Electrical Connection NOTICE! Electrostatic discharges can damage the inverter. Internal component parts of the inverter can be irreparably damaged by static electric discharge. • Earth yourself before touching a component part. 5.1 Overview of the Connection Area 5.1.1 Exterior View...

  • Page 21: Interior View

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

  • Page 22: Connection To The Power Distribution Mains (Ac)

    Connection requirements of the network operator Comply with the connection requirements of your network operator. Cable dimensioning Use Sunny Design version 2.0 or higher for dimensioning the conductor cross-sectional areas (see Sunny Design programme at www.SMA.de/en). Cable requirements Position Designation...
  • Page 23 The maximum permissible fuse protection can be found in Section 11 "Technical Data" (page 62). Detailed information and examples for the rating of a miniature circuit-breaker can be found in the Technical Information "Miniature Circuit-breaker" in the SMA Solar Technology AG download area at www.SMA.de/en. DANGER!

  • Page 24: Connecting The Inverter To The Power Distribution Mains (Ac)

    AC nom The exact operating range of the inverter is specified in the operating parameters. The corresponding document can be found in the download area at www.SMA.de/en, in the "Technical Description" category of the respective inverter. 3. Switch off the miniature circuit-breaker, ensure that the device cannot be unintentionally or accidentally reconnected, and ensure that no voltage is present.
  • Page 25 SMA Solar Technology AG Electrical Connection Size used Procedure PG13.5 • Push the sealing ring into the fastening case. • Slide the PG13.5 pressure screw and the fastening case including the sealing ring over the AC cable. • Slide the threaded sleeve over the AC cable.
  • Page 26 Electrical Connection SMA Solar Technology AG 14. Tighten the pressure screw or cable gland 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 27: Connecting Additional Earthing

    SMA Solar Technology AG Electrical Connection 5.2.3 Connecting Additional Earthing If a second protective conductor, additional earthing or equipotential bonding is required, you can additionally earth the inverter on the enclosure. Overview of the additional earthing Object Description M6x12 cheese-head screw (included in the scope of delivery)

  • Page 28: Setting The Display Language

    Electrical Connection SMA Solar Technology AG 5.3 Setting the Display Language You can set the language of the display using the switches at the bottom of the display assembly inside the inverter. Procedure 1. Open the inverter as described in Section 7.2 "Opening the Inverter" (page 44).

  • Page 29: Assembling The Dc Connectors

    SMA Solar Technology AG Electrical Connection • The following limiting values at the DC input of the inverter must not be exceeded: Inverter Maximum input voltage Maximum input current SB 2500 600 V (DC) 12.0 A (DC) SB 2500-IT SB 3000 600 V (DC) 12.0 A (DC)
  • Page 30 Electrical Connection SMA Solar Technology AG 3. Ensure the cable is correctly in place. Result Measure ☑ If the conductors are visible in the hollow • Proceed to step 4. cavity of the clamping bracket, the cable is in the correct position.

  • Page 31: Opening The Dc Connector

    SMA Solar Technology AG Electrical Connection 5.4.3 Opening the DC Connector 1. Unscrew the cable gland. 2. To release the plug, slot a screwdriver into the side catch mechanism and lever out. For this purpose, use a screwdriver with a blade width of 3.5 mm.

  • Page 32: Connecting The Pv Array (Dc)

    Electrical Connection SMA Solar Technology AG 5.4.4 Connecting the PV Array (DC) DANGER! Danger to life due to high voltages in the inverter • Before connecting the PV array, ensure that the miniature circuit-breaker is switched off. NOTICE! Excessive voltages can destroy the measuring device.
  • Page 33 SMA Solar Technology AG Electrical Connection NOTICE! Exceeding the maximum input voltage can destroy the inverter. If the voltage of the PV modules exceeds the maximum input voltage of the inverter, it can be destroyed by the overvoltage. This will void all warranty claims.
  • Page 34 Electrical Connection SMA Solar Technology AG 7. In order to seal the inverter, all the DC inputs that are not required have to be closed with DC connectors and sealing plugs: Sealing plugs • Do NOT insert the sealing plugs DIRECTLY into the DC inputs on the inverter.

  • Page 35: Communication

    Refer to the communication interface manual for a detailed wiring diagram and a mounting description. The inverter's active power can be limited externally using the Power Reducer Box from SMA Solar Technology AG. You will find detailed information on active power limitation in the Technical Description "Operating Parameters" at www.SMA.de/en. Installation Manual...

  • Page 36: Setting The Mains And Country Parameters

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

  • Page 37: Commissioning

    SMA Solar Technology AG Commissioning 6 Commissioning 6.1 Commissioning the Inverter 1. Check the following requirements before commissioning: – The inverter is securely in place. – Correct connection of the AC cable (mains) – Complete connection of all DC cables (PV strings) –...

  • Page 38: Display Messages During The Startup Phase

    Commissioning SMA Solar Technology AG 6.2 Display Messages during the Startup Phase • After commissioning, the inverter displays the SB xxx device type in the startup phase. Wrxxx • After 5 seconds or when you tap on the enclosure lid again, the firmware version of the internal processors is displayed by the inverter.

  • Page 39: Self-Test In Accordance With Dk 5940, Ed

    SMA Solar Technology AG Commissioning 6.3 Self-test in Accordance with DK 5940, Ed. 2.2 (Applies to Italy Only) 6.3.1 Starting the Self-test by Tapping You can start testing the disconnection times by tapping on the enclosure lid. A prerequisite here is that the rotary switch for language settings on the inverter has been set to Italy (IT/DK5940) or "trimmed".
  • Page 40 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 disconnection threshold is reached and the inverter disconnects from the mains.
  • Page 41 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 disconnection threshold is reached and the inverter disconnects from the mains.

  • Page 42: Maximum Frequency

    Commissioning SMA Solar Technology AG Maximum Frequency In a 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 disconnection threshold is reached and the inverter disconnects from the mains.
  • Page 43 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 disconnection threshold is reached and the inverter disconnects from the mains.

  • Page 44: Opening And Closing

    Opening and Closing SMA Solar Technology AG 7 Opening and Closing 7.1 Safety DANGER! Risk of lethal electric shock Before opening the inverter, observe the following: • Ensure that no voltage is present on the AC side. • Ensure that neither voltage nor current is present on the DC side.
  • Page 45 SMA Solar Technology AG Opening and Closing 5. Unlock and disconnect all DC connectors. To do this, insert the screwdriver into one of the side slits (blade width: 3.5 mm) and pull the DC connectors straight down. Do NOT pull ON THE CABLE while doing this.
  • Page 46 Opening and Closing SMA Solar Technology AG 8. Ensure that no voltage is present at the DC plugs on the inverter. ☑ If voltage is present, check the installation. 9. Remove all screws from the enclosure lid and pull the lid forward smoothly.

  • Page 47: Closing The Inverter

    SMA Solar Technology AG Opening and Closing 7.3 Closing the Inverter 1. Establish the protective conductor (PE) connection to the enclosure lid. 2. Attach the enclosure lid of the inverter by evenly tightening the four lid screws. 3. Check the DC connectors for correct polarity and connect them.
  • Page 48 Opening and Closing SMA Solar Technology AG 7. If an Electronic Solar Switch is installed, check the Electronic Solar Switch for wear, as described in Section 8.2 "Checking the Electronic Solar Switch for Wear" (page 49), and reattach it firmly. NOTICE!

  • Page 49: Maintenance And Cleaning

    SMA Solar Technology AG Maintenance and Cleaning 8 Maintenance and Cleaning Impurities such as dust or airborne pollen can cause a buildup of heat that can lead to yield losses. Also check the inverter and the cables for visible external damage. Repair, if necessary.
  • Page 50 Maintenance and Cleaning SMA Solar Technology AG Result Measure ☑ The metal tongues in the The Electronic Solar Switch can no longer reliably Electronic Solar Switch have a brown disconnect the DC side. discolouration or are burned through (A). 1. Replace the Electronic Solar Switch handle before attaching it again (for the order number, see Section 12 "Accessories"...

  • Page 51: Troubleshooting

    Do not perform any repairs that are not described here and take advantage of the 24-hour replacement service (inverter ready for shipping and handed over to a freight-forwarding company within 24 hours) and the SMA Solar Technology AG repair service instead. 9.1 Blink Codes...

  • Page 52: Error Messages

    • If the line voltage is continually within the tolerance range and this error message is still displayed, contact the SMA Service Line. Bfr-Srr Internal measurement comparison fault or hardware defect Corrective measures • If this fault occurs frequently, contact the SMA Service Line. SB25-30-IA-en-51 Installation Manual...
  • Page 53 MSD-Fac Internal measurement comparison fault or hardware defect. Corrective measures MSD-Vac • If this fault occurs frequently, contact the SMA Service Line. MSD-Timeout offset The "offset" operating state is a normal operating state that occurs prior to mains monitoring. If "offset" is displayed as an error, there is a fault in the data logging.
  • Page 54 • Check the installation for earth faults as described in Section 9.3.1 "Checking the PV Array for Earth Faults" (page 56). The inverter's firmware is faulty. Corrective measures • If this fault occurs frequently, contact the SMA Service Line. Shutdown Temporary inverter fault. Corrective measures •...

  • Page 55: Red Led Is Permanently Lit

    Corrective measures Watchdog Srr • If this fault occurs frequently, contact the SMA Service Line. 9.3 Red LED is Permanently Lit If the red status display LED is permanently lit during operation, there is an earth fault in the PV array, at least one of the varistors for overvoltage protection is defective or there is an insulation fault.

  • Page 56: Checking The Pv Array For Earth Faults

    Troubleshooting SMA Solar Technology AG 9.3.1 Checking the PV Array for Earth Faults 1. Disconnect the inverter from both the DC and AC sides as described in Section 7.2 "Opening the Inverter" (page 44). DANGER! Risk of lethal electric shock • Only touch the cables of the PV array on their insulation.
  • Page 57 SMA Solar Technology AG Troubleshooting Result Measure ☑ You have found an earth fault. • The installer of the PV array must remedy the earth fault in the affected string. You can determine the location of the earth fault as described below.

  • Page 58: Checking The Function Of The Varistors

    B and C. Result Measure ☑ There is a conducting connection. There is probably a different error in the inverter. • Contact the SMA Service Line (see Section 13 "Contact" (page 71)). SB25-30-IA-en-51 Installation Manual...
  • Page 59 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 70)). • To replace the varistors, proceed to step 3.

  • Page 60: Decommissioning

    Decommissioning SMA Solar Technology AG 10 Decommissioning 10.1 Unmounting the Inverter CAUTION! Risk of injury due to the heavy weight of the inverter • Note that the inverter weighs approx. 32 kg. 1. Open the inverter as described in Section 7.2 "Opening the Inverter" (page 44).

  • Page 61: 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 Section 13 "Contact" (page 71)).

  • Page 62: Technical Data

    Technical Data SMA Solar Technology AG 11 Technical Data 11.1 Sunny Boy 2500 DC Input Maximum DC power at cos φ = 1 2 700 W Maximum input voltage* 600 V MPP voltage range 224 V … 480 V Rated input voltage...

  • Page 63: Protective Devices

    SMA Solar Technology AG Technical Data Overvoltage category according to IEC 60664-1 Maximum cable length at conductor cross-section of 1.5 mm² Maximum cable length at conductor cross-section 15.5 m of 2.5 mm² Protective Devices DC reverse polarity protection Short-circuit diode...
  • Page 64 Technical Data SMA Solar Technology AG Country standards, as of 11/2011* VDE0126-1-1 AS4777 C10/11 PPDS GBT19939-2005 EN 50438 RD1663 RD661 G83/1-1 DK5940 VDE-AR-N 4105 UTE C 15-712-1 EN 50438: does not apply to all country standard deviations of EN 50438.
  • Page 65 SMA Solar Technology AG Technical Data Electronic Solar Switch (Optional) Electrical endurance in the event of a short circuit, Min. 50 switching processes with a nominal current of 35 A Maximum switching current 35 A Maximum switching voltage 800 V...

  • Page 66: Sunny Boy 3000

    Technical Data SMA Solar Technology AG 11.2 Sunny Boy 3000 DC Input Maximum DC power at cos φ = 1 3 200 W Maximum input voltage* 600 V MPP voltage range 268 V … 480 V Rated input voltage 350 V...
  • Page 67 SMA Solar Technology AG Technical Data Overvoltage category according to IEC 60664-1 Maximum cable length at conductor cross-section 12.5 m of 2.5 mm² Protective Devices DC reverse polarity protection Short-circuit diode Input-side disconnection device Electronic Solar Switch DC overvoltage protection...
  • Page 68 Technical Data SMA Solar Technology AG Country standards, as of 11/2011* VDE0126-1-1 AS4777 C10/11 PPDS GBT19939-2005 EN 50438 RD1663 RD661 G83/1-1 DK5940 VDE-AR-N 4105 UTE C 15-712-1 EN 50438: does not apply to all country standard deviations of EN 50438.
  • Page 69 SMA Solar Technology AG Technical Data Electronic Solar Switch (Optional) Electrical endurance in the event of a short circuit, Min. 50 switching processes with a nominal current of 35 A Maximum switching current 35 A Maximum switching voltage 800 V...

  • Page 70: Accessories

    SMA Solar Technology AG 12 Accessories You will find the corresponding accessories and spare parts for your product in the following overview. If required, you can order these from SMA Solar Technology AG or your specialty retailer. Designation Brief description SMA order number...

  • Page 71: Contact

    SMA Solar Technology AG Contact 13 Contact If you have technical problems concerning our products, contact the SMA Service Line. We need the following data in order to provide you with the necessary assistance: • Inverter type • Inverter serial number •...
  • Page 75 Legal Provisions The information contained in this document is the property of SMA Solar Technology AG. Publishing its content, either partially or in full, requires the written permission of SMA Solar Technology 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.

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