SUNNY CENTRAL 500HE-20/630HE-20/720HE-20/760HE
Contents
1. SMA Solar Technology AG Figure 8 Position of the labels Item SMA order number Description A 86 05200 Beware of hazardous voltage B Serial number C 86 108670105 Danger of burn injury D 86 10867022 Risk of electrical shock even when the device is disconnected E 86 10867022 Risk of electrical shock even when the device is disconnected F 86 10867023 Risk of electric shock due to active power source 86 108670106 Danger of burn injury G 86 108670103 Risk of electric shock due to active power source H 86 10867023 Risk of electric shock due to active power source 86 108670106 Danger of burn injury 86 0032311 5 safety rules 86 108670108 The positive negative pole of the PV generator is earthed 86 108670107 in the inverter 86 10867024 Unintended tripping due to modified settings 86 108670104 Risk of electric shock due to active power source K 86 0032310 Plant protected by conductors L 86 108670103 Risk of electric shock due to active power source Depending on the PV array earthing SC500 800HE20 WH en 10 Maintenance Manual SMA Solar Technology AG 6 Maintenance Under Voltage Free Conditions 1 PUNO Dang2. 52 7 3 6 Checking the String Cables oooooocccccccccccco o 53 7 3 7 Checking the Covers and Labels ooooooooo o ooo 53 7 3 8 Checking the Fuses and Fuse Holders 0 0 54 7 3 9 Checking the Screw Connections and Clamp Connections 54 7 3 10 Checking the Surge Arrester 2 0 0 0 000 0 e eee eee eee 55 E 56 Maintenance Manual SC500 800HE20 WH en 10 5 SMA Solar Technology AG SC500 800HE20 WH en 10 Maintenance Manual SMA Solar Technology AG U Information on this Document Validity This document applies to the following inverters and accessories SC 500HE 20 SC 630HE 20 SC 720HE 20 SC 760HE 20 SC 800HE 20 SSM SSM16 11 SSM24 11 SMB SMB C SMA String Combiner Target group 1 Information on this Document This manual is intended for skilled persons Only qualified personnel with the appropriate skills are allowed to perform the tasks described in this manual see Section 2 2 Skills of Skilled Persons page 11 Additional information For more information on third party components contact the relevant manufacturers A maintenance report is enclosed with every inverter The maintenance report describes the pending maintenance work and the maintenance interval recommended by SMA Solar Technology AG Maintenance Manual SC500 800HE20 WH en 10 7 1 Information on this Document Symbols SMA Solar Technology AG Symbol A DANGER
3. Central Inverter SUNNY CENTRAL 500HE 20 630HE 20 720HE 20 760HE 20 800HE 20 Maintenance Manual SC500 800HE20 WH en 10 98 4110410 Version 1 0 Co SMA Solar Technology AG Table of Contents Table of Contents Information on this Document o ooooooooo 7 EEN 9 KEE 9 2 2 Skills of Skilled Persons AAA DHL am ett 11 2 3 Personal Protective Equipment cenicero 11 3 Maintenance Intervals ooooooooooo 12 Sunny Central WEE 13 4 1 Design of the Inverter ee Bee Kate ge toe EX S CEA DS 13 A2 Type label tsov cope ie EEN 13 5 Maintenance when Voltage is Present 14 5 1 Reading off Error Messages and Warnings issus 14 5 2 Checking the DC Switch Disconnector 0000 eee e eee 14 A3 Checking the External FastStop 16 5 4 AC Circuit Breaker Optional ies e Rh e RR 17 6 Maintenance Under Voltage Free Conditions 18 6 1 Disconnecting the Inverter EEN 18 6 2 Disassembling the bone 19 6 3 Replacing Ventilation Grid Mats 1 ecrire eem 20 6 4 Maintaining the Interior of the Switch Cabinet 2 6 4 1 Disassembling the Protective Cover 21 6 4 2 Checking the Interior of the Switch Cabinet siuuuu 21 6 4 3 Checking the Fuses Disconnecting Blades 21 6 4 4 Checking the Surge Arrester 0 0000 00 c cee eee eee 22 6 4 5 Replacing the GFDI Soft Grounding Relay ssuue 23
4. Danger to life from electric shock or electric arc when touching live components Disconnect the inverter see Section 6 1 2 Mount the protective covers torque 10 Nm 3 Fasten the earthing cables to the panels of the interface cabinet torque 8 Nm Ensure that the earthing cables are securely in place Fasten the panels torque 2 Nm 3 Nm 30 SC500 800HE20 WH en 10 Maintenance Manual SMA Solar Technology AG 6 Maintenance Under Voltage Free Conditions 6 8 Maintenance after Connecting the Control Voltage 6 8 1 Connecting the Voltage High voltages that can cause fatal electric shocks are present in the live components of the inverter Move the key switch to the Stop position and ensure it cannot be reconnected accidentally e Do not touch any live components in the inverter or the medium voltage grid Comply with all applicable safety regulations for handling medium voltage grids e All previously removed protective covers must be mounted 1 Open the doors of the interface cabinet 2 Switch on the grid monitoring miniature circuit breaker Connect additional external voltage Connect external voltage supply externally Connect AC circuit breaker Connect the DC voltage in the main distributor or the sub distributor NOOB Ww Connect the AC voltage of the medium voltage transformer externally Maintenance Manual SC500 800HE20 WH en 10 3
5. Check the sealing of the enclosure 7 2 6 Checking the Enclosure Interior 1 Te Danger to life from electric shock or electric arc when touching live components e Disconnect the Sunny Main Box see Section 7 2 1 2 Check whether the enclosure interior is damaged If the enclosure interior is damaged contact the SMA Service Line 3 Remove any dirt build up on the enclosure opening for the connection cables Replace damaged or unsealed enclosure openings for connection cables Ensure that there is no condensation water inside the enclosure 5 Ensure that the door mechanism is securely in place and sealed 7 2 7 Checking the Base Plate 1 Melde Danger to life from electric shock or electric arc when touching live components e Disconnect the Sunny Main Box see Section 7 2 1 2 Ensure that the foam on the base plate is intact Maintenance Manual SC500 800HE20 WH en 10 47 7 Maintaining the Accessories SMA Solar Technology AG 7 2 8 Checking the Covers and Labels A B 600 m A o WH WH WE WE WEE WEE WEE ER EY B o d i ON to s IE 2 B Figure 16 Position of the labels on the Sunny Main Box Position SMA order number Description A 86 0520 Active power source B 86 108670103 Risk of electric shock due to active power source 86 108670109 Risk o
6. Figure 1 Design of the inverter ltem Description A Ventilation grid Inverter cabinet B C Interface cabinet D Exhaust vent 4 2 Type Label You can identify the inverter by its type label The type label is located in the interface and inverter cabinet of the inverter The serial number is also located at the front of the inverter Maintenance Manual SC500 800HE20 WH en 10 13 5 Maintenance when Voltage is Present SMA Solar Technology AG 5 Maintenance when Voltage is Present 5 1 Reading off Error Messages and Warnings You can connect a PC via the service interface on the outside of the interface cabinet see the Sunny Central installation manual If an error occurs view the error message on the display or SC COM interface and respond accordingly see the Sunny Central user manual 5 2 Checking the DC Switch Disconnector Figure 2 Design of the DC switch disconnector Item Description A Spring status indicator B Position indicator C ON button D OFF button Requirements Ll Control voltage is present O DC voltage is connected 14 SC500 800HE20 WH en 10 Maintenance Manual SMA Solar Technology AG 5 Maintenance when Voltage is Present 1 NOOR co Move the key switch to Stop Open the doors of the interface cabinet Check that the DC switch disconnector is turned off and indicates the Off po
7. 6 4 6 Checking the Screw Connections of the Power Cabling 24 647 Checking labelsz ives viescken sti citer el cad EEN E 26 Maintenance Manual SC500 800HE20 WH en 10 3 Table of Contents SMA Solar Technology AG 6 5 Checking the Switch Cabinet from the Outside 27 6 5 1 Checking the Door Seck 27 6 5 2 Checking the Locking Devices and Hinges 0 0 28 6 5 3 Checking the Surface of the Switch Cabinet 28 6 5 4 Checking the Switch Cabinet for Corrosion o assisas 29 6 6 Mounting the Protective Cover 29 6 7 Mounting the Panels ag owes tio ex vines Pre EE t 30 6 8 Maintenance after Connecting the Control Voltage 31 6 8 1 Connecting the Voltage esee 31 GR Checking the Fans no Ee Se epp 2 32 6 8 3 Checking the Heating Element and Hygrostat 32 7 Maintaining the Accessories eee 34 7 1 Maintaining the Sunny String Monitor 2200 34 7 1 1 Disconnecting the Sunny String Monitor 34 7 1 2 Maintenance Interna 34 7 1 3 Overview of the Main Components lese esses 35 7 1 4 Checking the Mounting Location and Installation 38 7 1 5 Checking the Enclosure mrss trahere n a e ES 38 7 1 6 Checking the Enclosure Interior 0ooooocccoccoo o o o 39 7 1 7 Checking the Base Pote 39 7 1 8 Checking the Covers and Label 40 7 1 9 Checking the Fuses and Fuse Holder 42 7 1 10 Checking the Screw Connections a
8. 800HE20 WH en 10 Maintenance Manual SMA Solar Technology AG 6 Maintenance Under Voltage Free Conditions 6 5 4 Checking the Switch Cabinet for Corrosion Required maintenance material not included in the scope of delivery O 6 6 Touch up sticks brushes or cans of spray paint or alternatively 2K PUR acrylic paint in the appropriate RAL colour can be used to repair minor surface damage Observe the relevant instructions of the paint manufacturer Touch up paint or 2K PUR acrylic paint in the appropriate RAL colour can be used to repair large area surface damage Observe the relevant instructions of the paint manufacturer Item RAL colour Colour scheme Enclosure door roof RAL 7035 Light grey Base RAL 7024 Graphite grey Abrasive cloth Degreaser Remove dirt To remove small area surface damage Sand the surface Clean the surface with degreaser Paint the surface To remove large area surface damage Sand the surface Clean the surface with degreaser Paint the entire surface Mounting the Protective Covers A DANGER Danger to life from electric shock or electric arc when touching live components Disconnect the inverter see Section 6 1 Mount the protective covers For this purpose use a torque wrench torque 10 Nm Maintenance Manual SC500 800HE20 WH en 10 29 6 Maintenance Under Voltage Free Conditions SMA Solar Technology AG 6 7 Mounting the Panels 1 Melde
9. 9522 399 Sunny Central 49 561 9522 299 30 210 9856 666 91 22 61713844 39 02 89347 299 81 3 3451 9530 82 2 508 8599 Maintenance Manual SMA Solar Technology AG 8 Contact Netherlands Poland Portugal Romania Slovakia Spain Switzerland Thailand United Arab Emirates United Kingdom Other countries Maintenance Manual See Belgium See Czech Republic SMA Solar Technology Portugal Unipessoal Lda See Czech Republic See Czech Republic SMA Ib rica Tecnolog a Solar S L U See Germany SMA Solar Thailand Co Ltd SMA Middle East LLC SMA Solar UK Ltd International SMA Service Line Lisbon Barcelona Bangkok Abu Dhabi Milton Keynes Niestetal 351 2 12 37 78 60 34 900 14 22 22 662 670 6999 971 2 698 5080 44 1908 304899 00800 SMA SERVICE 800 762 7378423 SC500 800HE20 WH en 10 57 SMA Solar Technology AG Legal Provisions 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 SMA Factory Warranty The current warranty conditions come enclosed with your device These are also available online at www SMA Solar com and can be downloaded and a
10. Sunny Central remove them see the Sunny Central installation manual 4 If there are no fuses in the Sunny Central remove the fuses from the DC main distributor 5 ESPIAS Danger to life from electric arcs when opening isolation terminals Open the isolation terminals Only do this when the Sunny String Monitor is switched off 6 Ed Danger to life from electric arcs when removing the DC connectors Open all DC connectors Only do this when the Sunny String Monitor is switched off 7 1 2 Maintenance Interval Maintenance is to be performed on the Sunny String Monitor every 24 months 34 SC500 800HE20 WH en 10 Maintenance Manual SMA Solar Technology AG 7 Maintaining the Accessories 7 1 3 Overview of the Main Components N o Figure 11 Main components of the Sunny String Monitor SSM ltem Description A Cover latch B DC fuses C LEDs for displaying the operating state D Surge arrester E DC switch F Terminals for connecting the signalling cable for the response contact G Terminals for conne
11. products contact the SMA Service line We require the following information in order to provide you with the necessary assistance e Device type Serial number Fabrication version Installation address with GPS coordinates e Plant name Pictures of the faulty components Type and number of connected PV modules Country Company name Subsidiary Australia SMA Australia Pty Ltd Sydney Austria See Germany Belgium SMA Benelux bvba sprl Mechelen Bulgaria See Greece China SMA Beijing Commercial Company Ltd Beijing Czech Republic SMA Central amp Eastern Europe s r o Prague Denmark See Germany France SMA France S A S Lyon Germany SMA Solar Technology AG Niestetal Greece SMA Hellas AE Athens Hungary See Czech Republic India SMA Solar India Pvt Ltd Mumbai Italy SMA Italia S r l Milan Japan SMA Japan K K Tokyo Korea SMA Technology Korea Co Ltd Seoul Luxembourg See Belgium 56 SC500 800HE20 WH en 10 SMA Service Line Toll free for Australia 1800 SMA AUS 1800 762 287 International 61 2 9491 4200 32 15 286 730 86 10 51501685 602 420 235 010 417 Sunny Boy Sunny Mini Central Sunny Tripower Inverters 33 472 09 04 40 Communication 33 472 09 04 41 Sunny Island 33 472 09 04 42 Sunny Central 33 472 09 04 43 Sunny Boy Sunny Mini Central Sunny Tripower Inverters 49 561 9522 1499 Communication 49 561 9522 2499 SMS with R ckruf 49 176 888 222 44 Sunny Island 49 561
12. screw terminals are securely attached to the fuse holders If the screw terminals are detached from the fuse holders reconnect the string cables to the fuse holders see the SMA String Combiner installation manual 7 3 7 Checking the Covers and Labels Figure 18 Position of the labels on the SMA String Combiner Item Description A Dangerous voltage symbol B Risk of electric shock from fuse holder C Risk of electric shock under the cover D Risk of an electric arc E Danger of burn injury F PV array earthing G Fuse rating Maintenance Manual SC500 800HE20 WH en 10 53 7 Maintaining the Accessories SMA Solar Technology AG 1 PUNO Danger to life from electric shock or electric arc when touching live components e Disconnect the SMA String Combiner see Section 7 3 1 2 Ensure that the safety message labels on and inside the device are present and undamaged Replace safety message labels if they are damaged or missing The safety message labels can be ordered from SMA using the SMA order number 86 0043660 3 Checkthat the cover latches are undamaged and securely in place Replace the cover latches if they are damaged or loose 7 3 8 Checking the Fuses and Fuse Holders 1 PANAS Danger to life from electric shock or electric arc when touching live components e Disconnect the SMA String Combiner see Se
13. shock or electric arc when touching live components e Disconnect the Sunny String Monitor see Section 7 1 1 2 Check the sealing of the device 3 Ensure that the drain plugs and vent plugs are intact and clean 4 Ensure that there is no condensation water inside the enclosure 7 1 7 Checking the Base Plate 1 edd Danger to life from electric shock or electric arc when touching live components e Disconnect the Sunny String Monitor see Section 7 1 1 2 Ensure that the vent plug on the Sunny String Monitor SSM is not dirty or damaged 3 If the vent plug is dirty or damaged clean or replace it 4 Ensure that all cable glands are sealed and securely in place 5 Ensure that the connectors are intact and securely in place Maintenance Manual SC500 800HE20 WH en 10 39 7 Maintaining the Accessories SMA Solar Technology AG 7 1 8 Checking the Covers and Labels A 9 y pm 8 ES coo Figure 13 Position of the labels on the Sunny String Monitor SSM Item SMA order number Description A 86 0520 Beware of hazardous voltage B 86 0512 Positive pole
14. they are damaged or missing 7 2 9 Checking the Fuses and Fuse Holders 1 edd Danger to life from electric shock or electric arc when touching live components e Disconnect the Sunny Main Box see Section 7 2 1 2 Ensure that the DC fuses and tension springs of the fuse holders are securely in place Replace the DC fuses or fuse holders if they are loose 7 2 10 Checking the Screw Connections and Clamp Connections 1 Melde Danger to life from electric shock or electric arc when touching live components e Disconnect the Sunny Main Box see Section 7 2 1 2 Ensure that the screw and clamp connections are securely in place 3 Ensure that the strain relief of the entire cabling is intact 50 SC500 800HE20 WH en 10 Maintenance Manual SMA Solar Technology AG 7 Maintaining the Accessories 7 3 Maintaining the SMA String Combiner 7 3 1 Disconnecting the SMA String Combiner A DANGER Danger to life due to electric shock High voltages are present in the live components of the SMA String Combiner Disconnect the SMA String Combiner before carrying out any work Turn off the DC switch disconnector in the SMA String Combiner Remove the DC fuses on the central inverter after switching it off Use an LV HRC fuse handle to do this If the central inverter is equipped with the Optiprotect option switch the miniature circuit breakers in the central inverter off Only open the fuse holders in the SMA S
15. 0 WH en 10 21 6 Maintenance Under Voltage Free Conditions SMA Solar Technology AG 6 4 4 Checking the Surge Arrester Figure 5 DEHNventil ltem Description A Ready indicator Additional maintenance material that is required but not included in the scope of delivery Ll A surge arrester testing device approved by the manufacturer of the surge arrester such as the PM20 by DEHN SOHNE GmbH Co KG i Item number of the surge arrester You can find the item numbers of the surge arrester in the circuit diagram For information on a specific item number please contact the SMA Service line 1 Med Danger to life from electric shock or electric arc when touching live components Disconnect the inverter see Section 6 1 2 Check whether the ready indicator is red If the ready indicator on the surge arrester is red replace the surge arrester Remove the cables Mark the cables in the process They must be connected to the same terminals again later 22 SC500 800HE20 WH en 10 Maintenance Manual SMA Solar Technology AG 6 Maintenance Under Voltage Free Conditions Depress the lever and lift the surge arrester upwards out of the top hat rail Insert the new surge arrester into the top hat rail from above and press it against the top hat rail Connect the cables to the terminals from which you removed them before 3 Usethe testing device to check that the surge arrester is operational
16. 1 6 Maintenance Under Voltage Free Conditions SMA Solar Technology AG 6 8 2 Checking the Fans O The miniature circuit breaker of the external voltage supply is switched off 1 Open the doors 2 Switch on the miniature circuit breaker of the external voltage supply The fans should soon start to run X Have the fans failed to start Contact the SMA Service Line 3 Close the doors 6 8 3 Checking the Heating Element and Hygrostat Risk of burns due to hot heating elements During the function test the heating element will become hot There is a risk of burns if you touch the heating element without protective gloves on e Do not touch heating elements with bare hands Wear personal protective equipment Always maintain a safe distance when checking the function of heating elements D Low humidity If the humidity is below 50 you will not be able to perform the function test since the minimum value of the hygrostat is 50 32 C500 800HE20 WH en 10 Maintenance Manual SMA Solar Technology AG 6 Maintenance Under Voltage Free Conditions Requirements O The miniature circuitbreaker of the external voltage supply must be switched on Figure 10 Position of the heating element and hygrostat Position Description A H
17. C 86 108670101 Damage to the plant due to incorrectly rated fuses 86 108670103 Risk of electric shock due to active power source D 86 004610 Incorrect connection leads to destruction of the device 40 SC500 800HE20 WH en 10 Maintenance Manual SMA Solar Technology AG 7 Maintaining the Accessories Item SMA order number Description E 86 0509 Earthing F 86 0514 Negative pole Supo 000 Figure 14 Position of the labels on the Sunny String Monitor 16 24 11 with SSM 24 11 as an example 86 108670102 Item SMA order number Description A 86 051488 Beware of hazardous voltage B 86 108670101 Damage to the plant due to incorrectly rated fuses 86 1086701010 C 86 108670106 Risk of burns due to hot components beneath the cover D 86 108670109 Risk of an electric arc E 86 108670103 Risk of electric shock due to active power source F 86 051489 Beware of hazardous voltage G 86 0514 Negative pole H SSM isolation terminal risk of an electric arc do not remove isolation terminals under load 86 0512 Positive pole Maintenance Manual SC500 800HE20 WH en 10 41 7 Maintaining the Accessories SMA Solar Technology AG Item SMA order number Description K 86 10868001 External view label for SSM 24 1 with cable glands 86 10868002 External view label
18. ER Danger to life from electric shock or electric arc when touching live components e Disconnect the Sunny String Monitor see Section 7 1 1 Check the earth connection and contact resistance to the earth potential SC500 800HE20 WH en 10 Maintenance Manual SMA Solar Technology AG 7 Maintaining the Accessories 7 1 16 Checking the LEDs on the Measurement PCB 1 Melde Danger to life from electric shock or electric arc when touching live components e Disconnect the Sunny String Monitor see Section 7 1 1 2 If the red LED of the operating status indicator is on contact the SMA Service Line 7 2 Maintaining the Sunny Main Box 7 2 1 Disconnecting the Sunny Main Box A DANGER Danger to life from electric shock when live components of the Sunny Main Box are touched Observe the safety rules Disconnect Ensure that the device cannot be reconnected Ensure that no voltage or current is present Cover or safeguard any adjacent live components Maintenance must only be carried out when the device has been turned off and is dead 1 If there are DC circuit breakers in the DC sub distributor for example Sunny String Monitors these are to be disconnected This ensures that there is no current flowing through the Sunny String Monitor 2 Where are no DC circuit breakers in the DC sub distributor for example Sunny String Monitors remove the fuses in the DC sub distributor see the DC sub distributo
19. Explanation Indicates a hazardous situation which if not avoided will result in death or serious injury Indicates a hazardous situation which if not avoided could result in death or serious injury Indicates a hazardous situation which if not avoided could result in minor or moderate injury NOTICE Indicates a situation which if not avoided can result in property damage Information that is important for a specific topic or objective but is not safety relevant Indicates a requirement for meeting a specific goal Desired result HW A problem that might occur Nomenclature The following nomenclature is used in this document Full designation Designation in this document Sunny Central Inverter Sunny Central Communication Controller SC COM Abbreviations Abbreviation Designation Explanation AC Alternating Current DC Direct Current ESD Electrostatic Discharge GFDI Ground Fault Detection Interruption MSL Mean Sea Level PE Protective Earth Protective conductor PV Photovoltaics 8 SC500 800HE20 WH en 10 Maintenance Manual SMA Solar Technology AG 2 Safety 2 Safety 2 1 Safety Precautions Electric shock High voltages that can cause fatal electric shocks are present in the live components of the inverter e All work must be carried out as described in this manual Observe all safety precautions Observe all safety pre
20. Section 7 1 1 2 Ensure that the screw connections of the power cables are securely in place 3 Ensure that the clamp connections of the strings are securely in place 4 Ensure that the clamp connections of the optional DC circuit breaker are securely in place 5 Check the screw and clamp connections to the insulation and the clamps for discolouration or changes to their appearance If the screw and clamp connections are discoloured or if there are changes to their appearance replace them 6 Ensure that the shield clamping saddle is securely in place 7 1 11 Checking the Surge Arrester 1 Te Danger to life from electric shock or electric arc when touching live components e Disconnect the Sunny String Monitor see Section 7 1 1 2 Check whether the ready indicator on the surge arrester is red If the ready indicator is red replace the protection module 7 1 12 Checking the Supply Voltage Required maintenance material not included in the scope of delivery O Voltmeter Requirements O The miniature circuit breaker of the voltage supply for the Sunny Central must be switched on 1 TI Danger to life from electric shock or electric arc when touching live components e Disconnect the Sunny String Monitor see Section 7 1 1 2 Measure the supply voltage at the terminals Wl Supply voltage must be at least 30 V X Is the supply voltage less than 30 V Check the clamp connections Attach the cable if nec
21. apacitors to discharge 6 2 Disassembling the Panels 1 A DANGER Danger to life from electric shock or electric arc when touching live components Disconnect the inverter see Section 6 1 Remove the panel screws using a Torx screwdriver Loosen the earthing cables of the panels Remove the panels Remove protective covers Ensure that no voltage is present AC connection lugs DC connection lugs DC busbars DC terminals Maintenance Manual SC500 800HE20 WH en 10 19 6 Maintenance Under Voltage Free Conditions SMA Solar Technology AG 6 3 Replacing Ventilation Grid Mats i Replacement of the ventilation grid mats Ventilation grid mats are wearing parts They must be replaced after 2 years ot the latest Depending on the pollution of the ventilation grid mats e g exposure to high levels of dust it may be necessary to replace these more frequently New ventilation filter mats can be purchased from SMA Solar Technology AG or your specialist dealer using the SMA order number 65 1077 1 A DANGER Danger to life from electric shock or electric arc when touching live components Disconnect the inverter see Section 6 1 2 Push the button of the ventilation grid upwards This releases the ventilation grid 3 Remove the ventilation grid mats Insert new ventilation grid mats For this purpose the fine side must be pointing outwards 5 Close the ventilation grid The ventilation grid audi
22. bly engages 20 SC500 800HE20 WH en 10 Maintenance Manual SMA Solar Technology AG 6 Maintenance Under Voltage Free Conditions 6 4 Maintaining the Interior of the Switch Cabinet 6 4 1 Disassembling the Protective Covers 1 Melde Danger to life from electric shock or electric arc when touching live components e Disconnect the inverter see Section 6 1 2 Remove protective covers 6 4 2 Checking the Interior of the Switch Cabinet 1 Te Danger to life from electric shock or electric arc when touching live components Disconnect the inverter see Section 6 1 2 Remove dirt and dust from the interior of the switch cabinet and from all assemblies e g DC switch disconnector and AC circuit breaker 3 Remove moisture To do this use a cloth 6 4 3 Checking the Fuses Disconnecting Blades 1 Melde Danger to life from electric shock or electric arc when touching live components Disconnect the inverter see Section 6 1 2 Check the LV HRC fuses disconnecting blades and tension springs for discolouration or changes to their appearance If the LV HRC fuses disconnecting blades or tension springs are discoloured or if there are changes to their appearance replace them 3 Check insulation and terminals for discolouration and changes to their appearance If the insulation or terminals are discoloured or if there are changes to their appearance contact the SMA Service Line Maintenance Manual SC500 800HE2
23. cautions in this document and the inverter installation manual e Do not touch any live components in the inverter or the medium voltage grid Comply with all applicable safety regulations for handling medium voltage grids In the event of an earth fault remember that plant components which are presumed earthed may still be live e Ensure that no voltage is present before touching any part of the plant Hazardous voltages may still be present in the inverter even if the AC and DC main switches are switched off e Wait at least 12 minutes after switching off the inverter This allows the capacitors to perform an electric discharge The insulation monitoring device with GFDI or remote GFDI does not provide protection from injury when GFDI is activated PV modules that are earthed by GFDI discharge voltage to earth Entering the PV field can lead to lethal electric shocks e Before entering the PV field switch the PV modules to insulated operation e Ensure that the insulation resistance of the PV field is greater than 1 kQ Operating a damaged inverter can lead to serious injuries from electric shock Only use the inverter when it is working safely and properly and check for visible damage on a regular basis e Ensure that all external safety equipment is freely accessible at all times and that regular checks are carried out to ensure that it is fully functional Escape routes Opening the doors of 2 inverters located opposite each ot
24. cting the control of the auxiliary trigger Maintenance Manual SC500 800HE20 WH en 10 35 7 Maintaining the Accessories SMA Solar Technology AG Item Description H Stud terminal for connecting the DC main cable Spring clamp terminals for the string connections K Plugs for connecting the strings L Terminals for the earth connection M Terminals for connecting the data cable N Cable gland for connecting the DC main cable O Cable glands for the string connections P Cable glands for the earth connection Q Vent plug R Cable glands for the communication connection S Cable glands for connecting the remote tripping T Cable glands for connecting the response contact optional 36 SC500 800HE20 WH en 10 Maintenance Manual SMA Solar Technology AG 7 Maintaining the Accessories G O NM L K I H G Figure 12 Main components of the Sunny String Monitor SSM 24 11 example ltem Description A DC fuses positive pole B Vent plug C LEDs for displaying the operating state D DC switch E Surge arrester with ready indicator F DC fuses negative pole G Drain plugs Maintenance Manual SC500 800HE20 WH en 10 37 7 Maintaining the Accessories SMA Solar Technology AG lte
25. ction 7 3 1 2 Ensure that all fuse holders are closed 3 Ensure that the screw connections of the power cables are securely in place 7 3 9 Checking the Screw Connections and Clamp Connections 1 Te Danger to life from electric shock or electric arc when touching live components e Disconnect the SMA String Combiner see Section 7 3 1 2 Checkthat the clamp connections of the string cables are securely in place Replace the clamp connections on the string cables if they are loose 3 Check that the clamp connections on the optional DC switch disconnector are securely in place Replace clamp connections if they are loose 4 Check the screw and clamp connections to the insulation and check the clamps for discolouration or changes to their appearance Replace the screw and clamp connections if they are discoloured or if there are changes to their appearance 54 SC500 800HE20 WH en 10 Maintenance Manual SMA Solar Technology AG 7 Maintaining the Accessories 7 3 10 Checking the Surge Arrester 1 PANES Danger to life from electric shock or electric arc when touching live components e Disconnect the SMA String Combiner see Section 7 3 1 2 Check whether the ready indicator on the surge arrester is red If the ready indicator is red replace the protection module Maintenance Manual SC500 800HE20 WH en 10 55 8 Contact 8 Contact SMA Solar Technology AG If you have technical problems concerning our
26. e line 6 5 2 Checking the Locking Devices and Hinges Required maintenance material not included in the scope of delivery O O E A suitable water free and heat resistant lubricant e g WD40 Non lubricating antifreeze e g PS88 A DANGER Danger to life from electric shock or electric arc when touching live components Disconnect the inverter see Section 6 1 Check that the doors latch easily Open and shut the doors several times in the process If the doors do not latch easily lubricate all moving parts of the latch Check that the doors can be held in place If the doors cannot be held in place lubricate the door stops Check that the door hinges move easily If the door hinges do not move easily lubricate them Lubricate all moving latch elements and movement points IF the inverter is installed in a region where below freezing temperatures occur treat the profile cylinder of the door lock and the key switch with a non lubricating antifreeze to prevent them freezing over 6 5 3 Checking the Surface of the Switch Cabinet l 2 28 A DANGER Danger to life from electric shock or electric arc when touching live components Disconnect the inverter see Section 6 1 Check surfaces for signs of damage or corrosion If surfaces are damaged repair them without delay or within 3 weeks at the latest If surfaces are corroded repair them without delay or within 3 weeks at the latest SC500
27. eating element B Hygrostat 1 Open the doors 2 Set the hygrostat to the minimum value If the humidity exceeds the set value the heating will start X Has the heating failed to start e Wait at least 5 minutes If the heating element does not start contact the SMA Service Line 3 Resetthe hygrostat to the initial value The initial value is included in the circuit diagram 4 Close the doors Maintenance Manual SC500 800HE20 WH en 10 33 7 Maintaining the Accessories SMA Solar Technology AG 7 Maintaining the Accessories 7 1 Maintaining the Sunny String Monitor 7 1 1 Disconnecting the Sunny String Monitor A DANGER Danger to life from electric shock when touching live components of the Sunny String Monitor e Observe the safety rules Disconnect Ensure that the device cannot be reconnected Ensure that no voltage or current is present Cover or safeguard any adjacent live components Maintenance must only be carried out when the device has been turned off and is dead Only open the isolation terminals when the device is off Only unplug the DC connector when the device is off l If there is a DC circuitbreaker in the Sunny String Monitor disconnect it This ensures that there is no current flowing through the Sunny String Monitor 2 If there is no DC circuit breaker disconnect the Sunny Central see the Sunny Central installation manual 3 If there are fuses in the
28. er to life from electric shock or electric arc when touching live components e Disconnect the inverter see Section 6 1 2 Ensure that safety messages and labels are present and undamaged Replace the safety messages and labels if they are missing or illegible If necessary you can purchase labels from SMA Solar Technology AG or your specialist dealer using the SMA order number stated above 6 5 Checking the Switch Cabinet from the Outside 6 5 1 Checking the Door Seals There are seals on the doors of the inverter E Figure 9 Section drawing with top view of seals example Item Description A Seal Side panel Sealing area Hinge Door TI IMIVUIO D Frame construction 1 Melde Danger to life from electric shock or electric arc when touching live components Disconnect the inverter see Section 6 1 Maintenance Manual SC500 800HE20 WH en 10 27 6 Maintenance Under Voltage Free Conditions SMA Solar Technology AG Check whether the seals in the sealing area show signs of damage Tip the sealing area is not visible when the door is closed If seals are damaged contact the SMA Service line Maintain the seals using talcum power petroleum jelly or wax This prevents frost damage If the side panels are disassembled check whether the seals in the side panels show any signs of damage in the sealing area If seals are damaged contact the SMA Servic
29. essary Maintenance Manual SC500 800HE20 WH en 10 43 7 Maintaining the Accessories SMA Solar Technology AG 7 1 13 Checking Shunt Release Optional E 2 3 M x gt 5 A DANGER Danger to life from electric shock or electric arc when touching live components e Disconnect the Sunny String Monitor see Section 7 1 1 Open the Sunny String Monitor At the shunt release apply a voltage of 230 V The DC switch switches to the OFF position Has the DC switch not switched to the OFF position Possible cause the voltage is outside the range of 70 to 110 of the nominal voltage of the shunt release Ensure that the voltage at the shunt release is in the range of 70 to 110 of the nominal voltage Contact the SMA Service Line Switch the DC switch to the ON position again Close the Sunny String Monitor 7 1 14 Checking the Undervoltage Release Optional 1 9 N d 6 A DANGER Danger to life from electric shock or electric arc when touching live components e Disconnect the Sunny String Monitor see Section 7 1 1 Open the Sunny String Monitor Disconnect the voltage at the undervoltage release Check whether the DC switch has switched to the OFF position If the DC switch has not switched to the OFF position contact the SMA Service line Switch the DC switch to the ON position again Close the Sunny String Monitor 7 1 15 Checking the Earth Connection 1 2 44 A DANG
30. f an electric arc E 86 051489 Dangerous voltage D 86 05081 Protective earth 48 SC500 800HE20 WH en 10 Maintenance Manual SMA Solar Technology AG 7 Maintaining the Accessories pe el a F F FF G G G G ay din KAA Oo o Oo o 0 0 o DD d Y Figure 17 Position of the labels on the Sunny Main Box Cabinet Position SMA order number Description A 86 0520 Active power source B 86 108670103 Risk of electric shock due to active power source 86 108670109 Risk of an electric arc 86 051489 Dangerous voltage D 86 05081 Protective earth Maintenance Manual SC500 800HE20 WH en 10 49 7 Maintaining the Accessories SMA Solar Technology AG Position SMA order number Description E 86 108670105 Danger of burn injury 86 108670109 Risk of an electric arc F 86 0512 L G 86 0514 L 1 EONA Danger to life from electric shock or electric arc when touching live components e Disconnect the Sunny Main Box see Section 7 2 1 2 Ensure that the latches of the Plexiglas covers are undamaged and securely in place Replace the latches if they are damaged or loose 3 Ensure that the safety message labels on and inside the device are present and undamaged Replace safety message labels if
31. for SSM 24 1 with DC connector 24 string inputs 86 10868003 External view label for SSM 24 1 with DC connector 48 string inputs 86 10868004 External view label for SSM 16 11 with 8x cable gland 86 10868005 External view label for SSM 16 11 with DC connector 16 string inputs 86 10868006 External view label for SSM 16 11 with DC connector 32 string inputs for SSM16 11 for SSM24 11 1 2 3 A DANGER Danger to life from electric shock or electric arc when touching live components e Disconnect the Sunny String Monitor see Section 7 1 1 Ensure that the safety message labels on and inside the device are present and undamaged Replace safety message labels if they are damaged or missing Check that the cover latches are undamaged and securely in place Replace the cover latches if they are damaged or loose 7 1 9 Checking the Fuses and Fuse Holders 1 2 42 A DANGER Danger to life from electric shock or electric arc when touching live components e Disconnect the Sunny String Monitor see Section 7 1 1 Ensure that the DC fuses and tension springs of the fuse holders are securely in place SC500 800HE20 WH en 10 Maintenance Manual SMA Solar Technology AG 7 Maintaining the Accessories 7 1 10 Checking the Screw Connections and Clamp Connections 1 PAN Danger to life from electric shock or electric arc when touching live components e Disconnect the Sunny String Monitor see
32. g NOTICE Damage to screw connections from over tightening Only apply the prescribed torque to tighten loose screw connections Torque specifications are shown in the circuit diagram of the inverter Contact the SMA Service Line if specifications are missing 24 SC500 800HE20 WH en 10 Maintenance Manual SMA Solar Technology AG 6 Maintenance Under Voltage Free Conditions Figure 7 Position of the power cabling A ltem Description Connection bar earthing cables Connection lugs AC cables Connection lugs DC cables B C D Connection lugs DC cables 1 A DANGER Danger to life from electric shock or electric arc when touching live components Disconnect the inverter see Section 6 1 Check that all screw connections on the power cables are tight If screw connections are loose tighten them with a torque wrench Check the insulation and connections for discolouration and changes to their appearance If the insulation or connections are discoloured or if there are changes to their appearance contact the SMA Service Line Check screw connections for damage and contact elements for corrosion If screw connections are damaged or contact elements are corroded replace them Maintenance Manual SC500 800HE20 WH en 10 25 6 Maintenance Under Voltage Free Conditions 6 4 7 Checking Labels n x
33. her blocks the escape route e Only open 1 inverter door at any given time Maintain the minimum passage width between the open door of the inverter and the next fixed obstacle The minimum passage width must comply with national standards In Germany the minimum passage width is 500 mm Maintenance Manual SC500 800HE20 WH en 10 9 2 Safety SMA Solar Technology AG Electrostatic discharge By touching electronic components you can damage or even destroy the inverter through electrostatic discharge ESD When working on the inverter or handling assemblies observe the electrostatic discharge safety regulations and wear protective gloves Discharge the electrostatic charge by touching uncoated earthed enclosure parts e g at the protective conductor connection on the doors This makes it safe to touch electronic components Environmental influences Moisture and dust penetration will damage the inverter Do not open the inverter when it is raining or if humidity is over 95 Only perform maintenance in a dry and dustfree environment Observing torque Adhere to the torque specifications listed in the circuit diagram and installation manual Contact the SMA Service Line if torque specifications are not given Storing documentation This documentation must be accessible to all service and maintenance personnel at all times Safely store this documentation within the immediate area of the inverter Warning signs Warn
34. hnology AG recommends an optical inspection every month to determine maintenance needs Under normal ambient and operating conditions the Sunny Central must be fully serviced at the following intervals Maintenance under normal ambient and operating conditions Description Interval Routine maintenance Every 24 months Preventative replacement intervals Description Interval Replacing the 24 V power supply units Every 10 years Replacing the fans of the inverter bridge Every 13 years Ventilation grid mats Every 24 months GFDI soft grounding relay 100 trippings due to short circuit Surge arrester If tripped Contact the SMA Service Line i Maintenance intervals Plant size location and ambient conditions influence the maintenance intervals e If the inverter is subject to adverse ambient conditions SMA Solar Technology AG recommends shortening the maintenance intervals Spare parts Spare parts can be identified by their reference designation ref des and the circuit diagram The spare parts list includes the item number of each spare part For information on a specific item number please contact the SMA Service line 12 SC500 800HE20 WH en 10 Maintenance Manual SMA Solar Technology AG 4 Sunny Central HE 20 4 Sunny Central HE 20 4 1 Design of the Inverter B C p i EH el d
35. ing signs must be clearly legible at all times Replace warning signs if damaged 10 SC500 800HE20 WH en 10 Maintenance Manual SMA Solar Technology AG 2 Safety 2 2 Skills of Skilled Persons The work described in this document must be performed by skilled persons only Skilled persons must have the following skills Knowledge of how an inverter works and is operated Training in how to deal with dangers and risks associated with operating and maintaining electrical devices and plants e Vocational training in the maintenance of electrical devices and plants Knowledge of all applicable standards and directives Knowledge of and adherence to this document and all safety precautions 2 3 Personal Protective Equipment After the control voltage has been switched on personal protective equipment is required for all work performed The protective equipment must conform with Directive 89 686 EEC Any protective equipment that is stipulated by law or otherwise required must also be used Maintenance Manual SC500 800HE20 WH en 10 11 3 Maintenance Intervals SMA Solar Technology AG 3 Maintenance Intervals Observing maintenance intervals ensures trouble free operation of the Sunny Central Maintenance intervals depend on ambient and operating conditions Under especially harsh ambient conditions certain maintenance tasks must be performed more frequently These maintenance tasks are listed in the maintenance report SMA Solar Tec
36. instructions for testing are included in the testing device user manual Replace the surge arrester if it is faulty 6 4 5 Replacing the GFDI Soft Grounding Relay Figure 6 Position of the GFDI and the soft grounding relay Item Description A GFDI B Soft grounding relay Maintenance Manual SC500 800HE20 WH en 10 23 6 Maintenance Under Voltage Free Conditions SMA Solar Technology AG 1 Melde Danger to life from electric shock or electric arc when touching live components Disconnect the inverter see Section 6 1 2 If the GFDI or the soft grounding relay have been tripped 100 times due to short circuit replace the components Remove the cables Mark the cables in the process They must be connected to the same terminals again later Release the components and remove from the top hat rail in an upwards direction Insert the new components into the top hat rail from above and press against the top hat rail Connectthe cables to the terminals from which you removed them before 3 If the GFDI has been replaced set the current value to 5 A 4 If the soft grounding relay has been replaced make the following settings Item Configuration value Upper potentiometer 0 8 Middle potentiometer W I Lower potentiometer 0 9 6 4 6 Checking the Screw Connections of the Power Cablin
37. juries e Before performing any work on the Sunny Central disconnect the inverter and ensure that it cannot be reconnected e After disconnecting the inverter wait at least 15 minutes until the inverter capacitors have discharged completely e Ensure that no voltage is present Before doing any maintenance work disconnect the inverter from all voltage sources as described in this section D Person authorised to operate the medium voltage transformer Only a duly authorised person may connect or disconnect the AC voltage of the medium voltage transformer 1 Switch the inverter to Stop 2 Disconnect the AC voltage of the medium voltage transformer externally Disconnect the DC voltage in the main distributor e g Sunny Main Box or the sub distributor e g Sunny String Monitor Switch off the AC circuit breaker Disconnect the external voltage supply externally Disconnect any additional external voltage NOMS Switch off the miniature circuit breaker of the external voltage supply and if necessary disconnect the internal power supply transformer 18 SC500 800HE20 WH en 10 Maintenance Manual SMA Solar Technology AG 6 Maintenance Under Voltage Free Conditions 9 10 11 12 Switch off the miniature circuit breaker of the grid monitoring Ensure that all poles are dead Earth and short circuit Cover or safeguard any adjacent live components Wait 12 minutes for the c
38. m Description String connections negative pole DC main line negative pole Earthing terminal DC main line positive pole Terminal for remote tripping optional Communication terminal OlZz z String connections positive pole 7 1 4 Checking the Mounting Location and Installation Remove all inflammable materials Ensure that the Sunny String Monitor is securely in place Ensure that the Sunny String Monitor is not exposed to direct solar irradiation 7 1 5 Checking the Enclosure 38 Check whether the enclosure is damaged Replace the enclosure if it is badly damaged or cracked Ensure that the vent plugs in the enclosure of the Sunny String Monitor SSM 16 24 are intact and clean Inspect the cover latches and cover screws of the Sunny String Monitor SSM e Check whether the cover latches are worn out IF the cover latches are worn out contact the SMA Service Line Check whether the cover screws are dirty or damaged If the cover screws are dirty or damaged clean or replace them Ensure that the cover is securely in place On the Sunny String Monitor 16 24 1 1 ensure that the lock is working and intact Check the side vent plugs for dirt Clean or replace the vent plugs if they are very dirty SC500 800HE20 WH en 10 Maintenance Manual SMA Solar Technology AG 7 Maintaining the Accessories 7 1 6 Checking the Enclosure Interior 1 Melde Danger to life from electric
39. n the doors of the interface cabinet Check whether the DC switch disconnector turns off and indicates the Off position If the DC switch disconnector does not turn off and does not indicate the Off position contact the SMA Service Line 6 Close the doors of the interface cabinet 7 Unlock the fast stop again 8 Switch the inverter to Start 9 Test the switching operation 3 times 16 C500 800HE20 WH en 10 Maintenance Manual SMA Solar Technology AG 5 Maintenance when Voltage is Present 5 4 AC Circuit Breaker Optional Figure 4 Design of the AC circuit breaker Item Description A On position B Tripped position C Off position Additional maintenance material that is required but not included in the scope of delivery Ll A testing device approved by the manufacturer of the AC circuit breaker e g TT1 from ABB Use the testing device to check whether the AC circuit breaker is ready for operation instructions are included in the testing device documentation e Ifan error is detected contact the SMA Service Line Maintenance Manual SC500 800HE20 WH en 10 17 6 Maintenance Under Voltage Free Conditions SMA Solar Technology AG 6 Maintenance Under Voltage Free Conditions 6 1 Disconnecting the Inverter A DANGER Electric shock due to live voltage The components of the Sunny Central are energised Touching components of the Sunny Central may result in death or severe in
40. nd Clamp Connections 43 7 1 11 Checking the Surge Arrester 00 0 eee eee 43 7 1 12 Checking the Supply Voltage 43 7 1 13 Checking Shunt Release Optional o n oansnsrunan nena 44 7 1 14 Checking the Undervoltage Release Optional 44 7 1 15 Checking the Earth Connection sees 44 7 1 16 Checking the LEDs on the Measurement PCB 45 4 SC500 800HE20 WH en 10 Maintenance Manual SMA Solar Technology AG Table of Contents 7 2 Maintaining the Sunny Main Bos 45 7 2 1 Disconnecting the Sunny Main Bos 45 7 2 2 Maintenance Interval etes ra BEE 45 7 2 3 Overview of the Main Components oaaae iaaiaee 46 7 2 4 Checking the Mounting Location and Installation 46 7 2 9 Checking the Enclosure ec REL e des RE 47 7 2 6 Checking the Enclosure Interior ooooococcoccooo o o 47 7 2 7 Checking the Base Plate xao coo ridad 47 7 2 8 Checking the Covers and Labels ooooooccccco o o 48 7 2 9 Checking the Fuses and Fuse Holder 50 7 2 10 Checking the Screw Connections and Clamp Connections 50 7 3 Maintaining the SMA String Combiner 220005 51 7 3 1 Disconnecting the SMA String Combiner n a u aanuaaaanaa 51 7 3 2 Maintenance Interna 5 7 3 3 Checking the Mounting Location and Installation 52 7 34 Checking the B se Plat eere RR aeons 52 7 3 5 Checking the Enclosure and Enclosure Interior
41. omponents e Disconnect the SMA String Combiner see Section 7 3 1 2 Check whether the drainage plugs are dirty or damaged Clean or replace the drainage plugs if they are damaged or dirty 3 Ensure that all cable glands are securely in place 4 Ensure that the connectors are intact and securely in place 7 3 5 Checking the Enclosure and Enclosure Interior 1 PSN Danger to life from electric shock or electric arc when touching live components e Disconnect the SMA String Combiner see Section 7 3 1 2 Ensure that the enclosure is undamaged and clean If the enclosure is severely damaged contact the SMA Service Line 3 Ensure that the door lock is intact and clean 4 Check that the perimeter seals on the door frames are intact If the seals are damaged replace them Ensure that there is no condensation water inside the enclosure Ensure that all cable glands are sealed 52 SC500 800HE20 WH en 10 Maintenance Manual SMA Solar Technology AG 7 Maintaining the Accessories 7 3 6 Checking the String Cables 1 Melde Danger to life from electric shock or electric arc when touching live components e Disconnect the SMA String Combiner see Section 7 3 1 2 Check the DC connectors are securely in place If the DC connectors are loose reconnect the string cables to the SUNCLIX DC connector see SMA String Combiner installation manual Replace the DC connectors if they do not snap in correctly 3 Ensure that the
42. r installation manual 3 If there are fuses in the Sunny Central remove them see the Sunny Central installation manual 4 If there are no fuses in the Sunny Central the maintenance can only be performed when it is dark 7 2 2 Maintenance Interval Maintenance is to be performed on the Sunny String Monitor every 24 months Maintenance Manual SC500 800HE20 WH en 10 45 7 Maintaining the Accessories SMA Solar Technology AG 7 2 3 Overview of the Main Components 8 NM N AAA Figure 15 Main interior components Item Description A Sunny Main Box Sunny Main Box Cabinet DC busbar positive pole or negative pole depending on PV plant DC fuses or disconnecting blades DC inputs positive pole or negative pole depending on PV plant mim g O w Earthing terminal 7 2 4 Checking the Mounting Location and Installation Ensure that the mounting location is accessible e Ensure that the Sunny Main Box is securely in place Remove all inflammable materials e Ensure that the Sunny Main Box is not exposed to direct solar irradiation 46 SC500 800HE20 WH en 10 Maintenance Manual SMA Solar Technology AG 7 Maintaining the Accessories 7 2 5 Checking the Enclosure Check whether the enclosure is damaged If the enclosure is damaged contact the SMA Service Line
43. re available on paper from the usual sales channels if required Trademarks All trademarks are recognised even if these are not marked separately Missing designations do not mean that a product or brand is not a registered trademark The Bluetooth word mark and logos are registered trademarks owned by Bluetooth SIG Inc and any use of such marks by SMA Solar Technology AG is under licence QR Code is a registered trademark of DENSO WAVE INCORPORATED SMA Solar Technology AG Sonnenallee 1 34266 Niestetal Germany Tel 49 561 9522 0 Fax 49 561 9522 100 www SMA de E Mail info SMA de O 2004 to 2012 SMA Solar Technology AG All rights reserved Maintenance Manual SC500 800HE20 WH en 10 59 SMA Solar Technology www SMA Solar com SMA Solar Technology AG www SMA de SMA Australia Pty Ltd www SMA Australia com au SMA Benelux bvba sprl www SMA Benelux com SMA Beijing Commercial Company Ltd www SMA China com cn SMA Central 8 Eastern Europe s r o www SMA Czech com SMA France S A S www SMA France com SMA Hellas AE www SMA Hellas com SMA Ib rica Tecnolog a Solar S L U www SMA lberica com SMA Solar India Pvt Ltd www SMA India com SMA Italia S r l www SMA ltalia com SMA Japan K K www SMA Japan com SMA Technology Korea Co Ltd www SMA Korea com SMA Middle East LLC www SMA Me com SMA Portugal Niestetal Services Unipessoal Lda www SMA Portugal com SMA Solar Thailand Co Ltd
44. sition If the DC switch disconnector is not turned off and does not indicate the Off position contact the SMA Service Line Close the doors of the interface cabinet Switch the inverter to Start Open the doors of the interface cabinet Check that the DC switch disconnector is turned on and indicates the On position IF the DC switch disconnector is not turned on and does not indicate the On position contact the SMA Service Line Close the doors of the interface cabinet Move the key switch to Stop Test the switching operation 3 times Maintenance Manual SC500 800HE20 WH en 10 15 5 Maintenance when Voltage is Present SMA Solar Technology AG 5 3 Checking the External Fast Stop gs m Figure 3 Position of the fast stop Item Description A Fast stop Requirements Ll Control voltage is present O DC voltage is connected 1 Check whether the DC switch disconnector and the AC contactor audibly switch off when the fast stop is actuated If no switching noises can be heard contact the SMA Service Line 2 For inverters with display check whether the inverter display shows the error message 9009 If the display does not show the error message 9009 contact the SMA Service Line 3 For inverters with light repeaters check whether the red light repeater is illuminated If the red light repeater is not illuminated contact the SMA Service Line Ope
45. tring Combiner when it is switched off Only plug in or unplug the DC connector when it is switched off Risk of burns from touching hot components Wear safety gloves when working on the device l If there is a DC switch disconnector in the SMA String Combiner disconnect it This ensures that there is no current flowing through the SMA String Combiner If there is no DC switch disconnector disconnect the Sunny Central see the Sunny Central installation manual 2 If there are fuses in the Sunny Central remove them Use an LV HRC fuse handle to do this If the central inverter is equipped with the Optiprotect option switch the miniature circuit breakers in the central inverter off If there are no fuses in the Sunny Central remove the fuses from the DC main distributor 5 Only open the fuse holder in the SMA String Combiner when it is switched off 6 Disconnect all DC connectors 7 3 2 Maintenance Interval Service the SMA String Combiner every 24 months Maintenance Manual SC500 800HE20 WH en 10 51 7 Maintaining the Accessories SMA Solar Technology AG 7 3 3 Checking the Mounting Location and Installation Remove all inflammable materials Ensure that the SMA String Combiner is securely in place e Ensure that the SMA String Combiner is not exposed to direct solar irradiation 7 3 4 Checking the Base Plate 1 Te Danger to life from electric shock or electric arc when touching live c
46. www SMA Thailand com SMA Solar UK Ltd www SMA UK com
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