PV Inverter SUNNY BOY 3000-US / 3800-US / 4000-US Installation Manual SB30-40-US-IA-en-34 | TBUS-SB30_40US | Version 3.
YOUR ^D DISTRIBUTOR SOLIGENT 800-967-6917 www.soligent.
SMA America, LLC Legal Restrictions Copyright © 2013 SMA America, LLC. All rights reserved. No part of this document may be reproduced, stored in a retrieval system, or transmitted, in any form or by any means, electronic, mechanical, photographic, magnetic or otherwise, without the prior written permission of SMA America, LLC. Neither SMA America, LLC nor SMA Solar Technology Canada Inc.
Important Safety Instructions SMA America, LLC IMPORTANT SAFETY INSTRUCTIONS SAVE THESE INSTRUCTIONS This manual contains important instructions for the following products: • Sunny Boy 3000-US / 3800-US / 4000-US This manual must be followed during installation and maintenance. The product is designed and tested according to international safety requirements, but as with all electrical and electronic equipment, certain precautions must be observed when installing and/or operating the product.
SMA America, LLC General Warnings General Warnings General Warnings All electrical installations must be made in accordance with the local and National Electrical Code® ANSI/NFPA 70 or the Canadian Electrical Code® CSA C22.1. This document does not and is not intended to replace any local, state, provincial, federal or national laws, regulation or codes applicable to the installation and use of the product, including without limitation applicable electrical safety codes.
General Warnings 6 SB30-40-US-IA-en-34 SMA America, LLC Installation Manual
SMA America, LLC Table of Contents Table of Contents 1 Information on this Document. . . . . . . . . . . . . . . . . . . . . . 11 2 2.1 2.2 2.3 Safety . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 Intended Use. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 Skills of Electrically Qualified Persons. . . . . . . . . . . . . . . . . . . . 14 Safety Precaution . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Table of Contents SMA America, LLC 5.6 Mounting the DC Disconnect . . . . . . . . . . . . . . . . . . . . . . . . . . 32 5.6.1 Inserting the DC Varistors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32 5.6.2 Mounting the DC Disconnect on the Wall . . . . . . . . . . . . . . . . . . . . . . . . . . 33 5.7 Mounting the Inverter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34 6 6.1 6.2 Electrical Connection . . . . . . . . . . . . . . . . . . . . .
SMA America, LLC Table of Contents 9 9.1 9.2 9.3 9.4 Opening and Closing. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57 Opening the Inverter. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57 Closing the Inverter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58 Opening the DC Disconnect . . . . . . . . . . . . . . . . . . . . . . . . . . . 59 Closing the DC Disconnect . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61 10 10.1 10.2 10.3 10.
Table of Contents SMA America, LLC 12.3 12.4 12.5 12.6 Protection Devices. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 96 DC Disconnect . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 96 Torques and Cable Sizes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 96 Tripping Limits/Tripping Times. . . . . . . . . . . . . . . . . . . . . . . . . . 97 13 Accessories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
SMA America, LLC 1 1 Information on this Document Information on this Document Validity This document is valid for the following device types: • SB 3000US • SB 3000US-12 • SB 3800-US-10 • SB 3800-US-12 • SB 4000US • SB 4000-US-12 Target group This document is for electrically qualified persons. Only skilled workers are allowed to perform the tasks set forth in this document (see Section 2.2 "Skills of Electrically Qualified Persons", page 14).
1 Information on this Document SMA America, LLC Typography Typography "light" Usage Example: • The inverter switches to "Balanced" mode. • Display messages • Parameters • Terminals • Slots bold • Elements to be selected • Select the parameter FanTest and set to 1. • Elements to be entered Nomenclature The following nomenclature is used in this document: Complete designation Designation in this document SMA America, LLC SMA SMA Solar Technology Canada Inc.
SMA America, LLC 2 2 Safety Safety 2.1 Intended Use The Sunny Boy is a PV inverter that converts the direct current from the PV array into alternating current. Figure 1: Principle of a PV plant with Sunny Boy Position Designation A PV array B Sunny Boy with DC Disconnect C Load D Energy meter E Power distribution grid You can use the alternating current generated as follows: Household grid: Energy flows into the household grid.
2 Safety SMA America, LLC The Sunny Boy is suitable for indoor and outdoor use. The PV modules used must be suitable for use with the Sunny Boy and must be approved by the module manufacturer. Do not connect any energy sources other than PV modules to the Sunny Boy. The corresponding plant design may require the use of protective devices (see National Electrical Code® 690.9). For installations in Canada, the installation must be carried out in accordance with the applicable Canadian standards.
SMA America, LLC 2 Safety 2.3 Safety Precaution Danger to life due to high voltages in the inverter High voltages capable of causing electric shocks are present in the conductive components of the inverter. • All work on the inverter may be carried out by an electrically qualified person only. • All work on the inverter should only be carried out as described in this document. • The performance of work on the inverter is only permitted when the inverter is dead.
3 Scope of Delivery 3 SMA America, LLC Scope of Delivery Check the delivery for completeness and any externally visible damage. Contact your specialty retailer if the delivery is incomplete or damaged.
SMA America, LLC Position 3 Scope of Delivery Quantity Designation H 6 Explanation Conical spring washer For M6x10 cheese-head screws and M6x16 cheese-head screw I 3 DC varistor* ‒ K 1 Insertion tool* For DC varistors L 1 Installation manual, user manual, document set with explanations and certificates ‒ * Only applies for SB 3000US-12/SB 3800-US-12/SB 4000US-12 Installation Manual SB30-40-US-IA-en-34 17
4 Product Description 4 SMA America, LLC Product Description 4.1 Sunny Boy The Sunny Boy is a PV inverter which converts the direct current of the PV array to alternating current and feeds it into the power distribution grid.
SMA America, LLC 4 Product Description Symbols on the Inverter Symbol Designation Tap symbol Explanation You can operate the display by tapping on the enclosure lid: • To switch on the backlight, tap once. • To switch to the next displayed message, tap once. • To restart the inverter, tap once.
4 Product Description SMA America, LLC 4.2 Type Labels 4.2.1 Sunny Boy Type Label The type label provides a unique identification of the inverter. The type label is on the right-hand side of the enclosure. Figure 4: Layout of the Sunny Boy type label Position Designation Explanation A Model Device type B Serial no.
SMA America, LLC 4 Product Description 4.2.2 DC Disconnect Type Labels The type labels provide a unique identification of the DC Disconnect. The type label is on the righthand side of the enclosure. SMA Solar Technology AG www.sma-solar.com A DC-Disconnect Engineered in Germany Item No.l DE34 DC-DisconU-XX Date of manufacture XX/XXXX Max. system voltage under all conditions* XXXX Vdc DC max operating current* XXXX Adc Max.
4 Product Description SMA America, LLC SMA Solar Technology AG www.sma-solar.com DC-Disconnect A Engineered in Germany Serial No. XXXXXXXXXX Item No. DC-DisconU-XX Date of manfuacture Figure 6: DE34 XXXXXXXX Layout of the DC Disconnect type label Position Designation Explanation A Serial no. DC Disconnect serial number You require the information on the type labels to use the DC Disconnect safely and for customer support at the SMA Service Line.
SMA America, LLC 4 Product Description 4.3 DC Disconnect The DC Disconnect safely disconnects the PV array from the inverter. Figure 7: DC Disconnect design Position Designation A Rotary Switch B Cover The DC Disconnect connects the PV array to the inverter. Turning the rotary switch interrupts the flow of current and the DC cabling can be safely disconnected from the inverter. 4.
4 Product Description SMA America, LLC 4.6 Arc-Fault Circuit Interrupter (AFCI) According to the National Electrical Code®, Section 690.11, the Sunny Boy has a system for electric arc detection and interruption. An electric arc with a power of 300 W or greater must be interrupted by the AFCI in the time specified by UL 1699B. A tripped AFCI may only be reset manually.
SMA America, LLC 5 5 Mounting Mounting 5.1 Safety during Mounting Risk of injury due to inverter falling over Potential risk of bruising and broken bones due to the heavy weight of the inverter. • When mounting the inverter, note that it has a weight of 88 lb. (40 kg). • Use appropriate mounting material for the mounting location of the inverter: – For mounting on plasterboard, do not use hollow-wall anchors or toggle bolts.
5 Mounting SMA America, LLC 5.2 Selecting the Mounting Location Requirements for the mounting location: Danger to life due to fire or explosions With electrical devices, there is always a certain danger that a fire may break out. • Do not mount the inverter in the vicinity of combustible materials. • Do not mount the inverter in areas where highly flammable materials are stored. • Do not mount the inverter in a potentially explosive atmosphere. ☐ The mounting must be on a stable surface, e.g.
SMA America, LLC 5 Mounting Wall mounting bracket dimensions: Figure 8: Dimensions of the wall mounting bracket Observe recommended clearances: Figure 9: Recommended clearances for mounting the inverter Installation Manual SB30-40-US-IA-en-34 27
5 Mounting SMA America, LLC • If the inverter is mounted outdoors, the clearance below the inverter must amount to 3 ft. (900 mm). This prevents the ingress of waterspray into the inverter. • Observe recommended clearances to the walls as well as to other inverters or objects. Thus, you will prevent the inverter's power output from being reduced due to excessive temperatures.
SMA America, LLC 5 Mounting 5.3 Mounting the Wall Mounting Bracket on a Stone Wall Additional required mounting material (not included in the scope of delivery): ☐ 3 screws suitable for the foundation. ☐ 3 washers suitable for the screws. ☐ 3 screw anchors suitable for the foundation and for the screws. 1. Position the wall mounting bracket at the installation location. Tip: The bottom end of the wall mounting bracket reaches approximately to the bottom corner of the inverter. 2.
5 Mounting SMA America, LLC 5.4 Mounting the Wall Mounting Bracket on a Wooden Wall with a Stud or a Post Additional required mounting material (not included in the scope of delivery): ☐ 3 screws suitable for the foundation. ☐ 3 washers suitable for the screws. 1. Position the wall mounting bracket at the installation location. Tip: The bottom end of the wall mounting bracket reaches approximately to the bottom corner of the inverter. 2. Align the bracket with a spirit level. 3.
SMA America, LLC 5 Mounting 5.5 Mounting the Wall Mounting Bracket on a Wooden Wall with two Studs or on two Posts Additional required mounting material (not included in the scope of delivery): ☐ 2 screws suitable for the foundation. ☐ 2 washers suitable for the screws. 1. Position the wall mounting bracket at the installation location. Tip: The bottom end of the wall mounting bracket reaches approximately to the bottom corner of the inverter. 2. Align the bracket with a spirit level. 3.
5 Mounting SMA America, LLC 5.6 Mounting the DC Disconnect 5.6.1 Inserting the DC Varistors To protect inverters with an arc-fault circuit interrupter from overvoltage, the provided DC varistors must be inserted into the intended terminals prior to mounting the DC Disconnect.
SMA America, LLC 5 Mounting 2. Equip the 3 terminals with DC varistors: • Insert the insertion tool into the rectangular opening of the terminal. • Insert the DC varistor into the terminal. • Pull the insertion tool out of the rectangular opening of the terminal. 3. Ensure that all DC varistors in the terminals are securely in place. 4. Close the DC Disconnect (see Section 9.4) 5.6.2 Mounting the DC Disconnect on the Wall 1.
5 Mounting SMA America, LLC 5.7 Mounting the Inverter 1. Transport the inverter using the side handles and hook the inverter into the wall mounting bracket from above. Ensure that the inverter is positioned in the center of the wall mounting bracket. 2. Screw the inverter onto the wall mounting bracket on both sides using the provided screws with conical spring washers (torque: 44 in-lb. (5 Nm)). 3. Close the recessed grips with the ventilation grids. Ensure that the side assignment is correct.
SMA America, LLC 6 6 Electrical Connection Electrical Connection 6.1 Safety During Electrical Connection Danger to life due to high voltages in PV modules that are exposed to light Death or serious injury due to electric shock as a result of touching a DC cable. • During the installation of the inverter, cover the PV modules with opaque material.
6 Electrical Connection SMA America, LLC 6.2 Overview of the Connection Area 6.2.
SMA America, LLC 6 Electrical Connection 6.2.
6 Electrical Connection SMA America, LLC 6.2.
SMA America, LLC 6 Electrical Connection 6.3 AC Connection The AC outputs and the neutral conductors are not bonded to ground The circuits of the AC input and the AC output are isolated from the enclosure. The electrically qualified person is responsible for grounding the plant according to Section 250 of the National Electrical Code ANSI/NFPA 70. The Sunny Boy must be connected to the AC grounding conductor of the power distribution grid via the ground terminal of the AC connection terminal. 6.3.
6 Electrical Connection SMA America, LLC 4. Damage to the DC Disconnect due to penetration of moisture Electronic components in the inverter can be destroyed or damaged as a result of moisture penetration. • Only break out 1 knockout for the connection of the AC cable. • Do not enlarge the enclosure opening. 5. Insert 1 rain-tight or water-tight sleeve (3⁄4 in. (19 mm)) in the enclosure opening of the DC Disconnect and tighten from the inside using a counter nut. 6. Install 1 rigid conduit (3⁄4 in.
SMA America, LLC 6 Electrical Connection 6.3.3 Connecting the AC Cable of the DC Disconnect to the Inverter The power distribution grid is connected to the inverter via the DC Disconnect. Inserting the AC cable of the DC Disconnect into the inverter 1. Open the inverter (see Section 9.1). 2. In order to insert the AC cable of the DC Disconnect, pierce a hole in the center of the rubber grommet in the enclosure opening. Use a screwdriver for this. 3.
6 Electrical Connection SMA America, LLC 1. Connect the black insulated conductor to screw terminal "L1" (torque: 15 in-lb. (1.7 Nm)). 2. Connect the red insulated conductor to screw terminal "L2" (torque: 15 in-lb. (1.7 Nm)). 3. Connect the white insulated conductor to screw terminal "N" (torque: 15 in-lb. (1.7 Nm)). 4. Connect the green-yellow insulated conductor to screw terminal (torque: 15 in-lb. (1.7 Nm)). 5.
SMA America, LLC 6 Electrical Connection 1. Disconnect the AC miniature circuit-breaker and ensure that it cannot be reconnected. 2. Open the DC Disconnect (see Section 9.3). 3. Break out a suitable knockout on the underside of the DC Disconnect for inserting the DC cable of the PV array. 4. Damage to the DC Disconnect due to penetration of moisture Electronic components in the inverter can be destroyed or damaged as a result of moisture penetration.
6 Electrical Connection SMA America, LLC 1. Connect the PV ground terminal to the PV protective conductor (torque: 15 in-lb. (1.7 Nm)). 2. If a DC protective conductor is prescribed, connect the DC protective conductor to the DC ground terminal (torque: 15 in-lb. (1.7 Nm)). 3. Ensure that all ground terminals are correctly connected and that the cables are securely positioned in the screw terminals. 6.4.3 Grounding the DC Input The grounding of the PV plant depends on the type of PV module used.
SMA America, LLC 6 Electrical Connection • To negatively ground the DC input, insert the fuse extractor with ground fuse into the fuse holder and insert the jumper into the pin header: • Insert the fuse extractor with ground fuse into the upper fuse holder. • Insert the jumper into the upper pin, labeled "NEG", of the pin header.
6 Electrical Connection SMA America, LLC 6.4.4 Connecting the DC Cables to the DC Disconnect Depending on the PV modules used in the PV plant, it is necessary to positively or negatively ground the PV array. The PV array must be connected to the DC Disconnect, taking into account the necessary type of grounding. Potential damage to the inverter due to overvoltage If the DC input voltage of the PV modules exceeds the maximum values of the inverter, the inverter can be damaged by overvoltage.
SMA America, LLC 6 Electrical Connection 1. Ensure that the inverter is grounded as prescribed (see Section 6.4.3 "Grounding the DC Input", page 44). 2. Ensure that the DC Disconnect is grounded as prescribed (see Section 6.4.2 "Grounding the DC Disconnect", page 43). 3. To connect the PV array with negative polarity to the DC Disconnect, connect the DC cables: • Connect the DC+ cables to the "UNGROUNDED" screw terminal (torque: 15 in-lb. (1.7 Nm)).
6 Electrical Connection SMA America, LLC Connecting the DC cable of the DC disconnect to the inverter Figure 20: DC+ and DC − connecting terminal plates for connecting the DC cable of the DC Disconnect Position Designation A Screw terminal DC+ B Screw terminal DC − To connect the PV array with negative polarity to the inverter, connect the DC cables: • Connect the black insulated conductor to screw terminal DC+ (torque: 15 in-lb. (1.7 Nm)).
SMA America, LLC 6 Electrical Connection 6.5 Connecting the Combiner Box to the DC Disconnect Figure 21: Terminals for the Combiner Box Position Designation A "COMBINED" spring terminal B "GROUNDED" screw terminal Connecting the DC cable to the "COMBINED" spring terminal Requirement: ☐ A 3.5 mm x 120 mm insulated screwdriver must be available. 1. Insert a screwdriver into the rectangular opening of the spring terminal.
6 Electrical Connection SMA America, LLC 2. Press the insulated screwdriver upward and insert the stripped cable into the spring terminal. 3. Remove the insulated screwdriver from the spring terminal. 4. Carefully pull the cable to ensure that it is correctly connected. Connecting the Combiner Box to the DC Disconnect 1. Open the DC Disconnect (see Section 9.3). 2.
SMA America, LLC 7 7 Configuration Configuration 7.1 Automatic Line Voltage Detection The inverter automatically detects the line voltage that it must feed in. Depending on the voltage and the phase angle between L1-N and L2-N, the inverter determines whether it is connected to a 208 V or 240 V power distribution grid. If the inverter is configured for the wrong grounding system, the inverter displays an error message.
7 Configuration SMA America, LLC 7.2 Possible Grounding Systems The image illustrates the permitted and prohibited grounding systems in which the inverter can be operated. Tip: When connecting the inverter to the power distribution grid, the phase relationship is not important, but the voltage must be compatible.
SMA America, LLC 7 Configuration 7.3 Jumper Assignments for Grounding Systems At the factory, the inverter is configured for connection to the power distribution grid via a neutral conductor. By setting the jumper, the inverter can be configured for various grounding systems. This means it is possible to connect the inverter to grounding systems without a neutral conductor (e.g. to a 240 Delta or 208 Delta).
7 Configuration SMA America, LLC The inverter is compatible with grounding systems with a 208 V AC output or a 240 V AC output. Example: Jumper assignment for 240 V Delta: 120 V Stinger The example shows the jumper assignment for the connection of 3 inverters to a 240 Delta: 120 V Stinger power distribution grid. Observe the sequence in which the inverters are connected to the line conductors.
SMA America, LLC 7 Configuration 7.4 Changing the Display Language You can change the display language of the inverter. The language is configured via two switches that are located on the bottom edge of the display. Figure 24: Switch for setting the language on the bottom edge of the display Position Designation A "S2" switch B "S1" switch 1. Open the inverter (see Section 9.1). 2.
8 Commissioning the Inverter 8 SMA America, LLC Commissioning the Inverter Always commission the inverter according to the following procedure. Requirements: ☐ The AC miniature circuit-breaker must be correctly rated. ☐ All cables must be correctly connected. ☐ The enclosure lid must be closed and correctly grounded. 1. Remove all covers from the PV array. 2. Switch on the AC miniature circuit-breaker. 3. Turn the rotary switch of the DC Disconnect to the On position. ☑ The start phase begins.
SMA America, LLC 9 9 Opening and Closing Opening and Closing 9.1 Opening the Inverter Danger to life due to high voltages in the inverter High voltages capable of causing electric shocks are present in the conductive components of the inverter. • Only open the inverter as described in this document. Danger to life due to high voltages The capacitors in the inverter require 5 minutes to discharge. • Wait 5 minutes until the LEDs and the display switch off.
9 Opening and Closing SMA America, LLC 4. Remove all 4 screws and conical spring washers from the enclosure lid and remove the enclosure lid in an upward direction. 5. The enclosure lid, screws, and conical spring washers are to be stored safely. 9.2 Closing the Inverter Requirements: ☐ All cables are routed correctly and are not jammed when closing the lid. ☐ The seal in the inside of the lid must be undamaged and in the correct position.
SMA America, LLC 9 Opening and Closing 2. Attach the enclosure lid to the enclosure using all 4 screws and conical spring washers: • Attach 1 conical spring washer on each screw. Here, the grooved side of the conical spring washer must point to the screw head. • Tighten the 4 screws with conical spring washers through the drill holes in the enclosure lid into the threaded bores of the enclosure (torque: 53 in-lb. (6 Nm)). ☑ The teeth of the conical spring washer press into the enclosure lid.
9 Opening and Closing SMA America, LLC 3. If additional DC switch-disconnectors are available, switch off the DC switch-disconnectors and secure against re-connection. 4. Loosen the screw on the rotary switch of the DC Disconnect. Use a cross-head screwdriver for this. 5. Remove the screw and conical spring washer of the cover on the underside of the DC Disconnect. 6. Remove the rotary switch of the DC Disconnect in an upward direction.
SMA America, LLC 9 Opening and Closing 7. Remove the cover of the DC Disconnect. 9.4 Closing the DC Disconnect Always close the DC Disconnect as per the following procedure. 1. If a Combiner Box is not connected, ensure that the fuse extractors with string fuses are securely positioned in the fuse holders of the DC Disconnect (see Section 11.8 "Replacing String Fuses", page 88). 2. Mount the cover on the DC Disconnect. 3. Connect the rotary switch.
9 Opening and Closing SMA America, LLC 4. Turn the rotary switch of the DC Disconnect to the Off position. 5. Tighten the screw on the right-hand side of the rotary switch. Use a cross-head screwdriver for this. 6. Attach the conical spring washer on the screw of the DC Disconnect. Here, the grooved side of the conical spring washer must point to the screw head. 7. Insert the screw and conical spring washer into the underside of the DC Disconnect and tighten the screw (torque: 44 in-lb. (5 Nm)).
SMA America, LLC 10 Troubleshooting 10 Troubleshooting 10.1 LED Signals The LEDs represent the current operating state of the inverter clarify the messages in the display by means of the various blink codes. Figure 25: Position of the LEDs Position Designation Status A Green LED Glowing Explanation Operation Indicates standard operation of the inverter. Blinks 3 times per second Start The inverter is calibrating internal systems. The calibration takes 10 s.
10 Troubleshooting SMA America, LLC Position Designation Status Explanation B Red LED Glowing Tripped ground fuse Ground fuse was tripped or is not available. Corrective measures: • Check the PV plant for ground-faults (see Section 11.6). C Yellow LED Glowing Control System Fault The operation of the inverter is permanently inhibited. The inverter no longer feeds into the power distribution grid. Blinking AFCI self-test The inverter is carrying out the AFCI self-test.
SMA America, LLC Position B+C 10 Troubleshooting Designation Red LED + yellow LED Status Explanation Glows for 5 s, goes out for 3 s, blinks 4 times High DC input voltage Glows for 5 s, goes out for 3 s, blinks 5 times Disturbance Glowing ground-fault The inverter has detected a DC input voltage that is too high for safe operation. The inverter has detected an internal fault that interrupts normal operation: The inverter has detected a ground-fault.
10 Troubleshooting SMA America, LLC Measurement channel Explanation h-Total Total number of feed-in operation hours I-dif Residual current Iac Line current Ipv DC input current Max Temperature Measured maximum temperature at IGBT module Max Vpv Maximum DC input voltage Mode Current operating mode Pac Power fed into the power distribution grid Power On Total system start-up counter Serial Number Inverter serial number Temperature Temperature measured at IGBT module Vac Line voltage
SMA America, LLC 10 Troubleshooting Name Description CO2-Fact The inverter assesses the 0 lb./kWh to 2 lb./ yield and displays the kWh approximate amount of CO2 that the inverter has saved. The amount of CO2 is calculated by multiplying the generated kWh (E-total) by the factor defined in the parameter "CO2". Defines the country USA/UL1741/ standard for adjusting 2005 country-specific OFF_Grid information.
10 Troubleshooting SMA America, LLC Name Description Value/range Fac-delta+* Maximum permissible frequency deviation above the power frequency of 60 Hz before the grid monitoring disconnects the device from the power distribution grid. 0 Hz to 4.5 Hz The standard value is optimal for plants ˂ 30 kW. Fac-MinTripTime* Switch-off time having fallen below power frequency. The standard value is optimal for plants ˂30 kW. Fan-Test By setting this parameter to 1, you can check the function of the fan. 0.
SMA America, LLC Name 10 Troubleshooting Description Memory Function Value/range no function Default param. Reset Op.Data Reset errors Operating Mode Operating modes of an inverter MPP-Operation Turbine V-const Stop T-Max-Fan T-Start Installation Manual Explanation Default value no function Sets all parameters to the standard value. Sets all parameters that are visible on the user level to the standard values. Resets all permanent errors that lead to device disconnection.
10 Troubleshooting SMA America, LLC Name Description T-Start-Fan Fan turn-on temperature at minimum speed. Time during which the inverter waits before disconnecting from the power distribution grid if "Pac" (fed-in power) falls below the minimum required "Vpv-Start" (DC voltage). Fan turn-off temperature T-Stop T-Stop-Fan V-Const Setval Vac-Min* 70 Value/range 32°F to 212°F (0°C to 100°C) 1 s to 1,800 s 32°F to 212°F (0°C to 100°C) DC target voltage for the SB 3000US: operating mode "V-Const".
SMA America, LLC 10 Troubleshooting Name Description Vac-Max* Additional monitoring of the AC voltage The value is used to calculate the upper limit of the permissible AC voltage. The standard value is optimal for plants ˂ 30 kW. The standard value of 10% results in a trip value of 110%, as the list of trip limits shows (see Section 12.6). Additional monitoring of the AC voltage The value is used to calculate the lower limit of the permissible AC voltage.
10 Troubleshooting SMA America, LLC Name Description Vac-Max-Recnet The value is used to calculate the upper limit that is required for reconnecting to the power distribution grid after a grid failure. Minimum DC voltage from which the inverter feeds into the power distribution grid. Vpv-Start Value/range Explanation 0% to 20% Default value 5.
SMA America, LLC 10 Troubleshooting 10.4 Display messages 10.4.1 Status Messages Message Explanation Derating Reduction of the power fed into the power distribution grid due to high heat sink temperatures Disturbance Displays an error status that concerns the power distribution grid. This error status resolves itself. Error Error status that must be rectified Grid monitoring When the system starts, the inverter performs a synchronization with the power distribution grid.
10 Troubleshooting SMA America, LLC 10.4.2 Error Messages In the event of an error, the corresponding messages are shown in the display and the backlight is activated. Each error message is displayed for 5 seconds. After 5 seconds, the display switches through the regular operating messages. The error message will be displayed in the display sequence until the fault is rectified.
SMA America, LLC 10 Troubleshooting Message Cause and corrective measures Fac-Bfr, Fac-Srr The AC power frequency exceeds the permissible range. To prevent islanding, the inverter disconnects from the power distribution grid. Corrective measures: • Ensure that the AC cable is correctly connected (see Section 6.3). • Ensure that the power frequency is within the permissible range.
10 Troubleshooting SMA America, LLC Message Cause and corrective measures ROM Internal test of the inverter control system firmware failed. Corrective measures: • If the message occurs frequently, contact the SMA Service Line (see Section 15). Shut-Down Overcurrent present at the DC input of the inverter. The inverter switches off. Corrective measures: • If the message occurs frequently, ensure that the design and circuitry of the PV array are correct.
SMA America, LLC 10 Troubleshooting Message Cause and corrective measures XFMR_TEMP_W After high transformer temperatures are reduced, the inverter restarts feedin operation. Corrective measures: • Ensure that the fan is functioning correctly (see Section 11.3 "Checking the Fan", page 81). 10.4.3 Resetting "Error AFCI" Disturbance If the message "Error AFCI" is displayed, an electric arc has been detected in the PV system.
11 Cleaning and Care SMA America, LLC 11 Cleaning and Care 11.1 Cleaning the Ventilation Grids For optimal heat dissipation of the device, the ventilation grids must be clean. 1. Remove the ventilation grids sideways. 2. Risk of damage to the inverter due to intrusion of foreign bodies If the ventilation grid has been removed, foreign bodies (e.g. insects or stones) can intrude into the inverter and cause damage. • Mount the ventilation grids after installation and every time you finish cleaning.
SMA America, LLC 11 Cleaning and Care 11.2 Cleaning the Fans If the inverter displays the message "Derating", the fan may be dirty or defective. Always clean the fan as per the following procedure. 1. Open the inverter (see Section 9.1). 2. Wait 5 minutes until the fan stops rotating. 3. Check whether the fan guard is dusty or badly clogged. If the fan guard is dusty, clean the fan guard with a vacuum cleaner.
11 Cleaning and Care SMA America, LLC • Unlock and remove the fan plug. Damage to the fan due to compressed air • Clean the fan with a soft brush, a paint brush, or a damp cloth. 5. Insert the fan plug into the jack until it snaps into place. 6. Insert the fan into the inverter until the fan audibly snaps into place. 7. Press the fan guard into the retainer until it audibly snaps into place. 8. Commission the inverter (see Section 8).
SMA America, LLC 11 Cleaning and Care 11.3 Checking the Fan You can check the fan by configuring a parameter via a communication product or by placing a jumper on the pin header of the printed circuit board of the inverter. At temperatures below 32°F (0°C), the fan will no longer be controlled and cannot be checked. Fan test by configuring a parameter ☐ A communication product, data logger, or item of software, which is suitable for the type of communication used, must be available. 1.
11 Cleaning and Care SMA America, LLC 6. After checking the fan, return the jumpers to the original position: • Open the inverter (see Section 9.1). • Place the jumpers on the pin header according to the desired jumper assignment (see Section 7.3 "Jumper Assignments for Grounding Systems", page 53). • Close the inverter (see Section 9.2). • Commission the inverter (see Section 8). 11.
SMA America, LLC 11 Cleaning and Care Figure 26: Position of the DC varistors and string fuses Position Designation Explanation A DC varistors ‒ B Fuse holder For connecting 4 fuse extractors with string fuses Requirement: ☐ Set with 3 replacement varistors including insertion tool must be available (see Section 13 "Accessories", page 97). 1. Open the DC Disconnect (see Section 9.3). 2. Check whether the DC varistors are discolored or whether there is any other visible damage.
11 Cleaning and Care SMA America, LLC If no voltage is present at the DC varistors, replace all DC varistors. • Insert the insertion tool into the rectangular opening of the terminal. • Remove the DC varistor. • Insert the new DC varistor into the terminal. • Pull the insertion tool out of the rectangular opening of the terminal. 6. Ensure that all DC varistors in the terminals are securely in place. 7.
SMA America, LLC 11 Cleaning and Care 11.6 Checking the PV Plant for a ground-fault If the red and yellow LEDs glow, there may be a ground-fault in the PV plant. Check each string of the PV plant for a ground-fault as per the following procedure: Danger to life due to electric shock Death or serious injuries due to high voltages at the PV array. • Only touch the insulation of the PV array cables. • Do not connect strings with ground-faults to the inverter.
11 Cleaning and Care SMA America, LLC Example: Location of the ground-fault The example shows a ground-fault between the second and third PV modules. Figure 27: ground-fault in the PV array 3. Close the DC Disconnect (see Section 9.4). 4. Commission the inverter (see Section 8). 11.7 Replacing the Ground Fuse If the red LED glows and the inverter displays the error message "GFDI Fuse Open", the ground fuse may have been tripped.
SMA America, LLC 11 Cleaning and Care ^ Figure 28: Position of the ground fuse Position Designation A Fuse extractor with ground fuse Additional required mounting material (not included in the scope of delivery): ☐ 1 functional and correctly designed ground fuse must be available 1. Open the inverter (see Section 9.1). 2. Remove the fuse extractor with ground fuse from the fuse holder. 3. Remove defective ground fuse from the fuse extractor and insert a new ground fuse into the fuse extractor.
11 Cleaning and Care SMA America, LLC 11.8 Replacing String Fuses Danger to life due to high voltages in the PV plant Death or serious injury due to electric shock. • Only replace string fuses in the inverter with fuse extractors. Danger of fire due to incorrectly rated fuses Risk of injury due to fire. • Only replace faulty string fuses with string fuses of the same type and size.
SMA America, LLC 11 Cleaning and Care Additional required mounting material (not included in the scope of delivery): ☐ 4 functional and correctly rated string fuses must be available. 1. Open the DC Disconnect (see Section 9.3 "Opening the DC Disconnect", page 59). 2. Replace all string fuses: • Remove the fuse extractor with ground fuse from the fuse holder. • Remove the defective string fuse from the fuse extractor and insert the new string fuse into the fuse extractor.
12 Technical Data SMA America, LLC 12 Technical Data 12.1 DC⁄AC 12.1.
SMA America, LLC 12 Technical Data Efficiency Power factor at nominal power Inverter peak efficiency CEC efficiency at 208 V nominal value CEC efficiency at 240 V nominal value 1 96.8% 95.0% 95.
12 Technical Data SMA America, LLC 12.1.
SMA America, LLC 12 Technical Data Figure 31: Efficiency curve SB 3800-US-10/3800-US-12 12.1.
12 Technical Data SMA America, LLC AC output AC operating voltage range at 208 V nominal value AC operating voltage range at 240 V nominal value AC operating frequency range AC frequency, nominal value Maximum continuous AC output power Total harmonic factor of the output current with total harmonic factor of the AC voltage ˂ 2% and AC power ˃ 50% rated power Maximum continuous AC output current at 208 V Maximum continuous AC output current at 240 V Maximum residual output current Maximum output overcurre
SMA America, LLC 12 Technical Data Figure 32: Efficiency curve SB 4000US/4000US-12 12.2 General Data Width x height x depth 17 51⁄64 in. x 13 53⁄64 in. x 9 19⁄64 in. Weight Inverter technology Ambient temperature range (462 mm x 351 mm x 236 mm) 88 lb.
12 Technical Data SMA America, LLC 12.3 Protection Devices DC reverse polarity protection AC short-circuit current capability AC overcurrent protection Grid monitoring (SMA Grid Guard® 2) Short-circuit diode Software-controlled Current-controlled Yes 12.
SMA America, LLC 13 Accessories 12.6 Tripping Limits/Tripping Times Nominal frequency 60 Hz Tripping limit Tripping frequencies Tripping times ˃ 60.5 Hz ˂ 57.0 Hz to 59.8 Hz (standard 59.3 Hz) 60.45 Hz to 60.55 Hz 56.95 Hz to 59.85 Hz (standard 59.25 Hz to 59.35 Hz) 56.95 Hz to 57.05 Hz max. 0.1602 s Adjustable, 0.16 s to 300 s (standard max. 0.1602 s) ˂ 57.0 Hz Nominal voltage Tripping limit 208 V 240 V max. 0.1602 s 50% Trip voltages, conductor-neutral conductor* 57.6 V to 62.
14 Compliance Information SMA America, LLC 14 Compliance Information FCC Compliance This device complies with Part 15 of the FCC Rules. Operation is subject to the following conditions: 1. This device must not cause harmful interference, and 2. This device must accept any interference received, including interference that may cause undesired operation. NOTE: This equipment has been tested and found to comply with the limits for a Class A & B digital device, pursuant to Part 15 of the FCC Rules.
SMA America, LLC 15 Contact 15 Contact If you have technical problems concerning our products, contact the SMA Service Line.
4." 4PMBS 5FDIOPMPHZ XXX 4." 4PMBS DPN 4." "NFSJDB --$ XXX 4.
