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SMA SUNNY BOY 2000HF-US Installation Manual

Pv inverter
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PV Inverter
SUNNY BOY 2000HF‑US/2500HF‑US/3000HF‑US
Installation Guide
SB20_25_30HFUS-eng-IUS113711 | IMUS-SB20-30HFUS | Version 1.1
CA
US

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Summary of Contents for SMA SUNNY BOY 2000HF-US

  • Page 1 PV Inverter SUNNY BOY 2000HF‑US/2500HF‑US/3000HF‑US Installation Guide SB20_25_30HFUS-eng-IUS113711 | IMUS-SB20-30HFUS | Version 1.1...
  • Page 3 All such warranties are expressly disclaimed. Neither SMA America, LLC nor its distributors or dealers nor SMA Solar Technology Canada Inc. nor its distributors or dealers shall be liable for any indirect, incidental, or consequential damages under any circumstances.
  • Page 4 A warning describes a hazard to equipment or personnel. It calls attention to a procedure or practice, which, if not correctly performed or adhered to, could result in damage to or destruction of part or all of the SMA equipment and/or other equipment connected to the SMA equipment or personal injury. DANGER DANGER indicates a hazardous situation which, if not avoided, will result in death or serious injury.
  • Page 5 SMA America, LLC Important Safety Instructions Other symbols in this document In addition to the safety and hazard symbols described on the previous pages, the following symbol is also used in this installation guide: Information This symbol accompanies notes that call attention to supplementary information that you must know and use to ensure optimal operation of the system.
  • Page 6 The Sunny Boy contains no user-serviceable parts except for the fan on the bottom of the enclosure. For all repair and maintenance always return the unit to an authorized SMA Service Center.

  • Page 7: Table Of Contents

    Mounting the wall mounting bracket....... 24 Mounting the SMA DC-Disconnect..... . 25 Mounting the Sunny Boy onto the Wall mounting bracket .
  • Page 8 Disconnect the Sunny Boy from Voltage Sources ... 65 Open SMA DC Disconnect......66 Closing the SMA DC-Disconnect .
  • Page 9 Exchanging fuses ........74 9.3.1 Exchanging SMA Plug-in Grounding fuse......74 9.3.2 Replacing optional string fuses .
  • Page 10 Table of Contents SMA America, LLC 12.6 Disposing of the Sunny Boy ......100 12.7 Supplementary Information.

  • Page 11: Notes On This Manual

    You can find further information on special subjects in the download area of www.SMA‑America.com. Refer to the user manual for detailed information on operating the Sunny Boy. 1.4 Nomenclature In this document SMA America Production, LLC and SMA Solar Technology Canada Inc. are referred to in the following as SMA. Installation Guide...

  • Page 12: Safety

    Safety SMA America, LLC 2 Safety 2.1 Appropriate usage The Sunny Boy is a PV inverter which converts the direct current of a PV array into alternating current and feeds this into the power distribution grid. The Sunny Boy is suitable for installation indoors and outdoors.
  • Page 13 When designing the PV system, ensure that the values comply with the permitted operating range of all components at all times. The free design program ”Sunny Design” (www.SMA‑America.com) will assist you. The manufacturer of the PV modules must have approved the modules for use with this Sunny Boy device.

  • Page 14: Pv Series Fusing

    Safety SMA America, LLC PV ground fault detection and interruption The Sunny Boy is equipped with a ground fault detection device. If a ground fault current greater than 1 Amp is detected, the Sunny Boy will shut down and display the fault condition on the user interface display.

  • Page 15: Safety Instructions

    SMA America, LLC Safety 2.2 Safety instructions DANGER During operation high voltages are present in the Sunny Boy. Death or serious injury due to electric shock. • All work on the Sunny Boy must only be carried out by qualified personnel.

  • Page 16: Fcc Compliance Information

    Contact SMA for more information. RF-exposure Statement The SMA Sunny Boy 2000HF‑US, Sunny Boy 2500HF‑US, Sunny Boy 3000HF‑US contains a modular transmitter. Thus it must have a separation of at least 8 in. (20 cm) between the antenna and the body of the user or nearby persons, excluding hands, wrists, feet, and ankles.

  • Page 17: Common Utility Voltage Configurations

    SMA America, LLC Safety 2.4 Common utility voltage configurations The figure below illustrates common utility voltage configurations. Remember, when connecting the Sunny Boy to the power distribution grid, the phase relationship is not important, but the voltage must be compatible. Installation Guide...

  • Page 18: Unpacking And Inspection

    Installation manual Document set User manual SMA DC-Disconnect Communication module (SMA Quick Module) SMA Plug-in Grounding Screws and washers (M5) 3.2 Identifying the Sunny Boy You can identify the Sunny Boy using the type label. The type label is on the right side of the enclosure.

  • Page 19: Mounting The Device

    Danger of crushing due to the Sunny Boy falling. Crushing of body parts • Consider the weight of the Sunny Boy with SMA DC-Disconnect of approximately 50 lbs (23 kg) during mounting. • Always lift the Sunny Boy with both hands.

  • Page 20: Selecting The Wall Mounting Location

    Mounting the Device SMA America, LLC 4.2 Selecting the wall mounting location Observe the following conditions during installation: • The installation method and mounting location must be suitable for the weight and dimensions of the Sunny Boy (see section 13 ”Technical Data” (page 103)).

  • Page 21: Mounting The Wall Mounting Bracket

    SMA America, LLC Mounting the Device • Observe the minimum clearances to walls, other devices or objects as shown in the diagram in order to guarantee sufficient heat dissipation. Overview minimum clearances for indoor installation: 12 in. (300 mm) Front 2 in.
  • Page 22 Mounting the Device SMA America, LLC Dimensions of the Wall Mounting Bracket SB20_25_30HFUS-eng-IUS113711 Installation Guide...

  • Page 23: Possibilities For Mounting The Wall Mounting Bracket

    SMA America, LLC Mounting the Device 4.3.1 Possibilities for mounting the wall mounting bracket Mounting on stone wall For mounting on a stone wall you must affix the wall mounting bracket with a minimum of 3 screws. The position of the screws on the wall mounting bracket is as follows: •...

  • Page 24: Mounting The Wall Mounting Bracket

    Mounting the Device SMA America, LLC 4.3.2 Mounting the wall mounting bracket 1. Position the wall mounting bracket against the wall where you intend to mount the Sunny Boy. (Try to mount the Sunny Boy so that the display is approximately at eye-level.) Place a level on the top edge of the bracket, and adjust the position of the bracket until it is level.

  • Page 25: Mounting The Sma Dc-Disconnect

    CAUTION Danger of crushing due to the SMA DC-Disconnect falling. Crushing of body parts. • Consider the weight of the SMA DC-Disconnect of approximately 11 lbs (5 kg) during mounting. 1. Turn the DC disconnect switch of the SMA DC-Disconnect to position ”Off”.
  • Page 26 Mounting the Device SMA America, LLC 6. Push SMA DC-Disconnect straight onto the wall. 7. Ensure the SMA DC-Disconnect is correctly in place. ☑ The SMA DC-Disconnect is mounted onto the wall mounting bracket. SB20_25_30HFUS-eng-IUS113711 Installation Guide...

  • Page 27: Mounting The Sunny Boy Onto The Wall Mounting Bracket

    • Always lift the Sunny Boy with both hands. 1. Lift up the Sunny Boy with both hands and hang from above in the SMA DC-Disconnect and in the wall mounting bracket. While hanging the Sunny Boy, ensure that all cables of the inverter do not become trapped.

  • Page 28: Grounding The Sma Dc-Disconnect

    The Sunny Boy is grounded via the connection of the grounding cable to the DC side and the AC side (see section 6 ”Wiring the Sunny Boy” (page 40)). To ensure proper grounding of the SMA Disconnect, it must be connected with the Sunny Boy via an electric conductive connection. This electric conductive connection has to be provided by a screw and a locking washer included in the scope of delivery.

  • Page 29: Configuring The Sunny Boy

    Quick Module 485QM and multi-function relay You can purchase the Quick Module 485QM with RS485 interface and a multi-function relay from SMA or your dealer (see section 14 ”Accessories” (page 108)). You will find detailed descriptions of the functions in the respective manual.

  • Page 30: Inner View Of The Quick Module

    Quick Module (A). • To insert an SD card, flip the lower flap upwards. In case of a firmware update an SD card is necessary. Contact the SMA Service Line for details. Properties of the SD Card •...

  • Page 31: Country Setting Via Rotary Switch

    (B). Rotary switch positions The operating parameters show the corresponding parameter set. You can read these off via a communication device or download them from www.SMA‑America.com. Parameter Set Display Language Country/grid...
  • Page 32 Configuring the Sunny Boy SMA America, LLC Parameter Set Display Language Country/grid Off-Grid 60Hz English flexible German French Spanish If the Sunny Boy is not set to the correct installation country, configure it via the two rotary switches as described in section 5.2.2 ”Configuration for Bluetooth communication” (page 34).

  • Page 33: Configuring The Quick Module

    SMA America, LLC Configuring the Sunny Boy 5.2 Configuring the Quick Module You can configure the Quick Module before connecting it to the Sunny Boy. The Sunny Boy can be configured in two ways for several countries and grids. • By using the two rotary switches (A) and (B) of the Quick Module.

  • Page 34: Configuration For Bluetooth Communication

    Configuring the Sunny Boy SMA America, LLC 5.2.2 Configuration for Bluetooth communication Communication via Bluetooth with a communication device is activated as standard. Networking via Bluetooth with other inverters is deactivated as a delivery condition. The following configuration settings are possible via a rotary switch (switch C):...

  • Page 35: Closing The Quick Module

    (see section 8.1 ”Disconnect the Sunny Boy from Voltage Sources” (page 65)) and open the SMA DC Disconnect (see section 8.2 ”Open SMA DC Disconnect” (page 66)) 2. Plug the Quick Module into the designated holes on the bracket until it snaps into place.
  • Page 36 ☑ The lug of the Quick module is flush with the lug of the bracket. 4. Check that the Quick Module is securely in place. 5. Close the SMA DC Disconnect (see section 8.3 ”Closing the SMA DC-Disconnect” (page 67)). 6. Commission the Sunny Boy (see section 7 ”Commissioning” (page 63)).

  • Page 37: Configuration After Installation

    1. Disconnect the Sunny Boy from all voltage sources (see section 8.1 ”Disconnect the Sunny Boy from Voltage Sources” (page 65)). 2. Open the SMA DC Disconnect (see section 8.2 ”Open SMA DC Disconnect” (page 66)). 3. Pull the Quick Module carefully downwards to the stopper.
  • Page 38 ☑ The lug of the Quick module is flush with the lug of the bracket. 9. Close the SMA DC-Disconnect (see section 6.8 ”Closing the SMA DC Disconnect” (page 62)). 10. Commision the Sunny Boy (see section 7 ”Commissioning” (page 63)). ☑ The country configuration is complete.

  • Page 39: Disassembling The Quick Module

    1. Disconnect the Sunny Boy from voltage sources (see section 8.1 ”Disconnect the Sunny Boy from Voltage Sources” (page 65)). 2. Open the SMA DC Disconnect (see section 8.2 ”Open SMA DC Disconnect” (page 66)). 3. Pull the Quick Module carefully downwards to the stopper.

  • Page 40: Wiring The Sunny Boy

    Wiring the Sunny Boy SMA America, LLC 6 Wiring the Sunny Boy This section provides step-by-step instructions and other information required for wiring the Sunny Boy to the PV array and the power distribution grid. To complete the installation in a safe and efficient manner, complete the steps in the order that they appear.
  • Page 41 PLUG-IN GROUNDING PLUG-IN GROUNDING L1 L2 Object Description DC side terminals Connection point grounding Sunny Boy / SMA DC-Disconnect AC side terminals Opening for AC cable Connector for fan power supply DC-Disconnect Switch Openings for DC cable Top-hat rail for optional string fuses...

  • Page 42: Lower View Of The Sma Dc-Disconnect

    A DC grounding electrode conductor may be required by the Authority Having Jurisdiction (AHJ). Use the array grounding and DC Grounding Electrode Conductor – see illustration on page 47. 6.2 Lower view of the SMA DC-Disconnect The following graphic shows the bottom of the SMA DC-Disconnect. Object Description...

  • Page 43: Connection Of The Pv Array (Dc)

    Electric shock as a result of incorrect array grounding before installation of the SMA Plug-in Grounding. Death or serious injuries. The PV plant is only grounded when the inverter and the SMA Plug-in Grounding are completely installed. Leave the inverter disconnected on both the DC and AC sides until installation of the inverter and the SMA Plug-in Grounding is completed.

  • Page 44: Installing Cable Conduits And Leading Cable Into The Sunny Boy

    Always configure the DC-input-voltage range correctly before connecting the DC-input wires from the PV array to the Sunny Boy. Use Sunny Design at www.SMA‑America.com to determine the correct string configuration. Series fusing may be required depending on the type of PV module and the number of ®...
  • Page 45 (19 mm)) on the free openings of the SMA DC-Disconnect. Screw the cable conduits with counter nuts to the inner side of the SMA DC-Disconnect. 3. Lead the AC cable through the cable conduit from the inside of the safety enclosure into the inside of the SMA DC-Disconnect.

  • Page 46: Connection Of Pv Strings Without Optional String Fuses

    Wiring the Sunny Boy SMA America, LLC 6.4 Connection of PV strings without optional string fuses DC connection of the Sunny Boy with a negatively grounded PV array If your PV plant requires negative grounding, connect the cables of the PV strings and the DC cable...
  • Page 47 SMA America, LLC Wiring the Sunny Boy 7. Plug the equipment grounding conductor of the PV plant into terminal (B). 8. If there is a grounding electrode conductor: plug the grounding electrode conductor into terminal (A). One and Two String Wiring...
  • Page 48 Wiring the Sunny Boy SMA America, LLC DC connection with a positively grounded PV plant If your PV plant requires positive grounding, connect the cables of the PV strings and the DC cable of the Sunny Boy to the terminal block in the following way: Using DC-Terminal blocks Connect the wires to the DC-terminal block as described in section 12.7.1 ”Connect wires...
  • Page 49 SMA America, LLC Wiring the Sunny Boy 7. Plug the equipment grounding conductor of the PV plant into terminal (B). 8. If there is a grounding electrode conductor: plug the grounding electrode conductor into terminal (A). One and Two String Wiring...

  • Page 50: Connection Of Pv Strings With Optional Fuses

    Wiring the Sunny Boy SMA America, LLC 6.5 Connection of PV strings with optional fuses By using optional fuses for the connection of the PV strings, you can connect up to three PV strings to the Sunny Boy. For this you must install fuse holders to the top-hat rail next to the terminal block.
  • Page 51 SMA America, LLC Wiring the Sunny Boy 10. Strip the ends of the additional wires on the other side to a length of ⁄ in. (12 mm). 11. Loosen the screws of the upper terminal of the fuses (A) in a counterclockwise direction.
  • Page 52 Wiring the Sunny Boy SMA America, LLC DC connection with a positively grounded PV plant Connecting the Sunny Boy on the DC side Using DC terminal blocks Connect the wires to the DC terminal block as described in section 12.7.1 ”Connect wires to DC terminal block”...
  • Page 53 SMA America, LLC Wiring the Sunny Boy 13. Connect two of the additional wires to the terminals (D). 14. Connect the third additional wire to screw clamp (E): – Completely open the screw clamp (turn the screw counterclockwise). – Feed in the wire from below into the screw clamp.

  • Page 54: Installation Of The Sma Plug-In Grounding

    6.6 Installation of the SMA Plug-in Grounding SMA Plug-in Grounding enables for array grounding and contains a fuse for Ground Fault Indication (GFDI). If a ground fault occurs, the fuse in the SMA Plug-in Grounding disconnects the fault current generated. The type of grounding (positive/negative) is coded into the grounding stick.
  • Page 55 6.5 ”Connection of PV strings with optional fuses” (page 50). – Close the SMA DC Disconnect (see section 8.3 ”Closing the SMA DC-Disconnect” (page 67)). – Commission the Sunny Boy (see section 7 ”Commissioning” (page 63)).

  • Page 56: Configurable Grounding Parameters

    Grounding is prescribed by normative regulation or the module manufacturer. The inverter can only be operated with an SMA Plug-in Grounding set. In case of a grounding error, the inverter will not continue to feed into the grid and interrupts operation.

  • Page 57: Error Messages

    • The inverter does not feed into the grid. • Event number 35 An insulation fault has occurred. • Display message • If an SMA Plug-in Grounding is < Insulation resist. - check generator > installed, correct the fault as described in section 11.2 ”Correct Grounding •...

  • Page 58: Parameter "Prescribed Grounding Type" Or "Md.gndmodreq

    • Automatically: When in learning mode, the inverter automatically saves the grounding type of the plugged in SMA Plug-in Grounding after 10 hours of operation. • Manually: You can change the grounding type you want to use via the communication tool (Bluetooth/RS485), after you have started up the inverter.

  • Page 59: Wiring The Ac Output

    SMA America, LLC Wiring the Sunny Boy 6.7 Wiring the AC Output This subsection provides complete, step-by-step procedures for wiring the AC output from the Sunny Boy to the power distribution grid. 6.7.1 AC connection safety requirements WARNING All electrical installations must be done in accordance with all local electrical codes and ®...

  • Page 60: Connecting The Sunny Boy On The Ac Side

    SMA America, LLC 6.7.2 Connecting the Sunny Boy on the AC side Use the following procedure to connect the AC wires to the Sunny Boy with the SMA DC-Disconnect: WARNING You must connect the wires that carry the AC voltage from the Sunny Boy to the power distribution grid in the order described in this procedure.
  • Page 61 SMA America, LLC Wiring the Sunny Boy Connecting the AC cable of the power distribution grid and connecting the power supply of the fan 4. Connect the L1 wire of the power distribution grid to the terminal (E). 5. Connect the L2 wire of the power distribution grid to the terminal (F).

  • Page 62: Closing The Sma Dc Disconnect

    1. Check wire routing to ensure that no wires can interfere with proper sealing of the cover and that no pressure will be exerted on the connections when the cover is replaced. 2. Carefully position the cover on the front of the SMA DC-Disconnect. – Make sure that the switch handle snaps into place.

  • Page 63: Commissioning

    Depending on the type of system, the array’s negative or positive conductor is connected to the grounding system inside the inverter through the SMA Plug-in Grounding as a part of the UL1741 listed ground fault detection system. The GFDI protection is active whenever there is sufficient DC voltage to turn on the LCD in the Sunny Boy.

  • Page 64: Display Messages During Initialization

    Commissioning SMA America, LLC Display messages during initialization • First, the firmware version of the internal processors appears in the text lines. • After 5 seconds or after tapping the enclosure lid the serial number or the identifier of the inverter appears.

  • Page 65: Opening And Closing

    8 Opening and closing 8.1 Disconnect the Sunny Boy from Voltage Sources DANGER Electric shock due to improper opening of the SMA DC-Disconnect. Death resulting from burning and electric shock. • Observe the sequence described here when opening the Sunny Boy. • If problems occur when performing the work described here, contact SMA.

  • Page 66: Open Sma Dc Disconnect

    High voltages inside the SMA DC-Disconnect. Death or serious injuries. After opening the SMA DC-Disconnect there are still high voltages inside the SMA DC-Disconnect at the DC contacts of the DC terminal block and at the contacts of the DC switch.

  • Page 67: Closing The Sma Dc-Disconnect

    2. Carefully position the cover on the front of the SMA DC-Disconnect. – Make sure that the switch handle snaps into place. – Make sure that the upper edge of the SMA DC-Disconnect is covered by the lower edge of the Sunny Boy.

  • Page 68: Lock-Off Function

    During work on the PV modules in your PV plant you must switch the Sunny Boy off and secure against reconnection. The Lock-Off function of the SMA DC-Disconnect secures the Sunny Boy against accidental reconnection during work on the PV plant. 8.4.1 Secure Sunny Boy against reconnection 1.

  • Page 69: Unlocking And Switching On The Sunny Boy

    1. Open and remove the padlock on the switch of the SMA DC-Disconnect switch. 2. Push the handle of the SMA DC-Disconnect into the SMA DC-Disconnect and turn to the ”On” position. ☑ The Sunny Boy is unlocked and connected.

  • Page 70: Maintenance And Cleaning

    Maintenance and cleaning SMA America, LLC 9 Maintenance and cleaning Check the correct operation of the Sunny Boy at regular intervals. Impurities such as dust or pollen can cause heat accumulation that can lead to yield losses. Also check the Sunny Boy and the cables for visible external damage. Undertake repairs if necessary.

  • Page 71: Cleaning The Fan

    If the fan enclosure is soiled with loose dust, it can be cleaned using a vacuum cleaner. For locating the fan refer to section "Lower view of the SMA DC-Disconnect" on page 42. If you do not achieve satisfactory results with a vacuum cleaner, you can dismantle the fan for cleaning.
  • Page 72 Pull the fan plug slightly to ensure proper connection. 8. Close SMA DC-Disconnect (see section 8.3 ”Closing the SMA DC-Disconnect” (page 67). 9. Commission the Sunny Boy (see section 7 ”Commissioning” (page 63)). ☑ The fan has been cleaned.

  • Page 73: Checking The Fan

    You will also need the installer password to access the installer mode. 1. Request the installer password from the SMA Service Line (contact info see page 109). 2. Set the ”CoolSys.FanTst” parameter to ”on” in the installer mode using a communications device (e.g.

  • Page 74: Checking The Sma Dc Disconnect

    SMA Plug-in Grounding enables for array grounding and contains a fuse for Ground Fault Indication (GFDI). If a ground fault occurs, the fuse in the SMA Plug-in Grounding disconnects the fault current generated. Once the ground fault is eliminated (see section 11.1 ”Checking the PV array for Ground Fault”...
  • Page 75 For continued protection against risk of fire, replace only with the same type and ratings of fuse (600 VDC, 1 A). 6. Insert new fuse into the fuse holder of the SMA Plug-in Grounding and push it firmly into the fuse holder. 7. Hold the connection part of the SMA Plug-in Grounding tightly, replace the cap of the SMA Plug-in Grounding and tighten by hand.
  • Page 76 8. If the PV plant shall be negatively grounded and is properly wired as described in section 6.3, section 6.4 and section 6.5: connect the SMA Plug-in Grounding to the terminal socket so that the ”—” symbol shows to the front on the cap. Push the SMA Plug-in Grounding upwards until it clicks into place.

  • Page 77: Replacing Optional String Fuses

    SMA America, LLC Maintenance and cleaning 9.3.2 Replacing optional string fuses PV String Fuse Sizing CAUTION The string fuse size must not be greater than the maximum fuse size rating of the PV module as provided on the PV module manufacturers data sheet. If no maximum fuse size is indicated, please contact the PV module manufacturer! Refer to section 14 ”Accessories”...

  • Page 78: Replacing String Fuses

    1. Disconnect the Sunny Boy from voltage sources (see section 8.1 ”Disconnect the Sunny Boy from Voltage Sources” (page 65)). 2. Open the SMA DC Disconnect (see section 8.2 ”Open SMA DC Disconnect” (page 66)). 3. Open fuse holder. 4. Take the fuse out of the fuse holder.
  • Page 79 6. Close fuse holder. 7. Repeat the replacement of fuse for each string. 8. Close the SMA DC-Disconnect (see section 8.3 ”Closing the SMA DC-Disconnect” (page 67)). 9. Commission the Sunny Boy (see section 7 ”Commissioning” (page 63)). ☑ The string fuses have been replaced.

  • Page 80: Inspecting And Changing The Varistors

    1. Disconnect the Sunny Boy from voltage sources (see section 8.1 ”Disconnect the Sunny Boy from Voltage Sources” (page 65)). 2. Open the SMA DC Disconnect (see section 8.2 ”Open SMA DC Disconnect” (page 66)). 3. The position of the varistors are shown in the figure (A).
  • Page 81 • Procure replacement varistors as soon as possible and replace the defective varistors immediately. • Do not operate inverters with faulty varistors or without varistors. Use AC varistor replacement kit from SMA only. See section ”Accessories” (Seite 108) for the order number. Arrangement of the varistors Arrange the varistors as shown in the figure.

  • Page 82: Messages

    Messages SMA America, LLC 10 Messages 10.1 Green LED is lit or flashes Green LED is lit • If the green LED is lit, the Sunny Boy is in feed-in operation. Green LED is flashing • If the green LED flashes over a long period, this can mean that there is not sufficient DC voltage available.

  • Page 83: Error Messages

    If the grid voltage lies within the tolerance too high. range, yet this error is still being displayed, For safety reasons, the Sunny Boy contact the SMA Service Line. disconnects itself from the grid. < Grid fault > • Check for tripping of the line circuit breaker.
  • Page 84 The Sunny Boy disconnects from the grid to acceptable range, and this error is still assure compliance with the voltage quality. displayed, contact the SMA Service Line. < Grid fault > • Check the grid connection for strong, short-term frequency variations.
  • Page 85 (page 88). • The installer of the PV array must remedy the ground faults before you re-connect the affected string. • Check the SMA Plug-in Grounding. The fuse may be cleared. < DC Overcurrent > If this event occurs often: < Check Generator >...
  • Page 86 SMA America, LLC Event No. Display message and cause Corrective measures Wrong earthing type. • Check the polarity of the SMA Plug-in The SMA Plug-in Grounding is not installed Grounding and refer to the inverter with the correct polarity. setting of the grounding polarity parameter (positive or negative).
  • Page 87 < Language table update not successful > Internal device fault: however, the Sunny Boy continues to feed in. < Self diagnosis > • Contact the SMA Service Line (see section 15 ”Contact” (page 109)). < Device Fault > < Derating pending >...

  • Page 88: Troubleshooting

    Check the strings for ground faults, as described in the following: 1. Disconnect the Sunny Boy from voltage sources (see section 8.1 ”Disconnect the Sunny Boy from Voltage Sources” (page 65)). 2. Open the SMA DC Disconnect (see section 8.2 ”Open SMA DC Disconnect” (page 66)). NOTICE Excessive voltages can destroy measuring devices.

  • Page 89: Correct Grounding Fuse Fault

    9. Make a note of the type of generator grounding (" − " or " + "). 10. Remove the SMA Plug-in Grounding. Turn it in counterclockwise direction and then pull it down. 11. Check the PV array for a ground fault (see section 11.1 ”Checking the PV array for Ground Fault”...

  • Page 90: Correct The Grounding Type

    Voltage Sources” (page 65)). 15. Open the SMA DC Disconnect (see section 8.2 ”Open SMA DC Disconnect” (page 66)). 16. Check the SMA Plug-in Grounding fuse and, if necessary, replace it as described in section 9.3.1 ”Exchanging SMA Plug-in Grounding fuse” (page 74). 17. Connect the fully operative SMA Plug-in Grounding to the inverter as described in section 6.6 ”Installation of the SMA Plug-in Grounding”...

  • Page 91: Exchanging Grounding Fuse

    SMA America, LLC Troubleshooting 11.4 Exchanging Grounding Fuse Proceed as described in chapter 9.3.1 ”Exchanging SMA Plug-in Grounding fuse” (page 74). 11.5 AC fault If the line circuit breaker installed at the Sunny Boy tripped out, check the varistors as described in section 9.4 ”Inspecting and changing the varistors” (page 80).

  • Page 92: Decommissioning

    High voltages inside the SMA DC-Disconnect. Death or serious injuries. After opening the SMA DC-Disconnect there are still high voltages inside the SMA DC-Disconnect at the DC contacts of the DC terminal block and at the contacts of the DC switch.
  • Page 93 SMA America, LLC Decommissioning 3. Remove the grounded DC wire of the Sunny Boy from the terminal (A). 4. Remove the ungrounded DC wire of the Sunny Boy from the terminal (B). ☑ The connection of the Sunny Boy on the DC side is removed.
  • Page 94 Facing - Facing + N L1 L2 Loosening the connection of the Sunny Boy with the SMA DC-Disconnect 10. Loosen the screw which is used for grounding of the SMA DC-Disconnect counterclockwise. Lay the screw to one side in such a way that it will not get lost.

  • Page 95: Disassembling Sma Dc-Disconnect

    • Before dismounting the SMA DC-Disconnect ensure that the SMA DC-Disconnect is disconnected on both the AC and DC sides. Before you can dismount the SMA DC-Disconnect, you must disassemble the Sunny Boy (see section 12.1 ”Disassembling the Sunny Boy” (page 92)).
  • Page 96 PV plant and the grounding cable of the ground rod through the opening of the SMA DC-Disconnect enclosure. ☑ The cables of the PV plant are removed from the DC side of the SMA DC-Disconnect. SB20_25_30HFUS-eng-IUS113711 Installation Guide...
  • Page 97 PV plant and the grounding cable of the ground rod through the opening of the SMA DC‑Disconnect enclosure. ☑ The cables of the PV plant are removed from the DC side of the SMA DC-Disconnect. Installation Guide SB20_25_30HFUS-eng-IUS113711...
  • Page 98 SMA DC-Disconnect 1. Remove cables of the power distribution grid from terminal block (A). Pull the cables of the power distribution grid from the SMA DC-Disconnect enclosure. One and Two String Wiring iring (for more strings and further information see manual)
  • Page 99 Disassembling the SMA DC-Disconnect enclosure 1. Loosen the screw at the bottom of the wallmounting bracket. 2. With both hands hold the SMA DC Disconnect slightly slanted and lift out of the wall mounting bracket. 3. Remove the SMA DC-Disconnect to the front.

  • Page 100: Disassemble The Sunny Boy For Transport

    1. Disassembling the Sunny Boy as described in section 12.1 ”Disassembling the Sunny Boy” (page 92). 2. Remove the SMA Plug-in Grounding. Turn it in counterclockwise direction and then pull it down. ☑ The SMA Plug-in Grounding is loosened from its bracket.

  • Page 101: Disconnect Wires From Dc Terminal Block

    SMA America, LLC Decommissioning 4. Push an insulated screw driver into the rectangular opening under the spring terminal, which should open. 5. Push the screwdriver down, and hold this position. ☑ The spring terminal is open. 6. Lead the wire into the spring terminal.

  • Page 102: Disconnect Wires From Ac-Terminal Block

    Decommissioning SMA America, LLC 12.7.3 Disconnect wires from AC-terminal block 1. Strip the end of the wire to a length of ⁄ (14 mm). 2. Push an insulated screw driver into the rectangular opening under the spring terminal, which should open. 3. Push the screwdriver down, and hold this position.

  • Page 103: Technical Data

    SMA America, LLC Technical Data 13 Technical Data PV array connection data SB 2000HFUS- SB 2500HFUS- SB 3000HFUS- Max. input voltage, MPP 600 V DC Max Input voltage range 175 V ... 480 V 220 V ... 480 V 220 V ... 480 V...
  • Page 104 Technical Data SMA America, LLC Power distribution grid connection (AC) SB 2000HFUS- SB 2500HFUS- SB 3000HFUS- data Internal consumption at night < 1 W General data SB 2000HFUS- SB 2500HFUS- SB 3000HFUS- Dimensions, including DC-Disconnect 13  ⁄  in x 28 ...

  • Page 105: Torque Values And Wire Sizes

    SMA America, LLC Technical Data Communication interfaces SB 2000HFUS- SB 2500HFUS- SB 3000HFUS- Bluetooth standard Quick Module 485QM optional (galvanically isolated) Efficiency SB 2000HFUS- SB 2500HFUS- SB 3000HFUS- CEC efficiency η 90 % 96.5 % 96.5 % Certificates UL 1741, UL 1998, IEEE 1547, CSA.22.107 Electromagnetic Compliance FCC, Part 15, Class A&B...

  • Page 106: Efficiency Curves

    Technical Data SMA America, LLC 13.2 Efficiency curves Sunny Boy 2000HF‑US Sunny Boy 2500HF‑US SB20_25_30HFUS-eng-IUS113711 Installation Guide...
  • Page 107 SMA America, LLC Technical Data Sunny Boy 3000HF‑US Installation Guide SB20_25_30HFUS-eng-IUS113711...

  • Page 108: Accessories

    SMA America, LLC 14 Accessories You will find the corresponding accessories and replacement parts for your product in the following overview. If needed, you can order these from SMA or your dealer. Name SMA order number Optional Quick Module 485QM with RS485...

  • Page 109: Contact

    • Event number or display message of the Sunny Boy • Type of communication, if applicable • Type of fault signaling contact connected, if applicable SMA Solar Technology America, LLC 6020 West Oaks Blvd, Ste 300 Rocklin, CA 95765 Tel. +1 916 625 0870 Tel.

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