Maintenance Manual
Contents
1. Figure 3 Position of the circuit breakers Item Description A Motor driven circuit breakers Requirements Ll Control voltage is present O DC voltage is connected 1 Switch the inverter to Stop 2 Open the doors of the interface cabinet 16 SCCP WH B4 en 20 Maintenance Manual SMA Solar Technology AG 5 Maintenance when Voltage is Present 3 Switch the inverter to Start The motor driven circuit breakers are turned on and switch to the ON position X 15 the circuit breaker not turning on Contact the SMA Service Line 4 Switch the inverter to Stop The motor driven circuit breakers are turned off and switch to the OFF position X 15 the circuit breaker not turning offe Contact the SMA Service Line Test the switching operation 3 times 6 Close the doors of the interface cabinet Maintenance Manual SCCP WH B4 en 20 17 5 Maintenance when Voltage is Present SMA Solar Technology AG 5 4 AC Circuit Breaker Optional C lm E Figure 4 Switch positions of the AC circuit breaker Item Description A Off position B Tripped position C On 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 Procedure Use the testing d2. Figure 7 Position of the labels Item SMA order number Description A 86 004330 Dangerous voltage warning 30 SCCP WH B4 en 20 Maintenance Manual SMA Solar Technology AG 6 Maintenance under Voltage free Conditions Item SMA order number Description B 86 004332 Dangerous voltage warning 86 05200 Dangerous voltage warning D 86 004345 Risk of short circuit if operated without a transformer E 86 004332 Dangerous voltage warning F 86 004345 Risk of electric shock from active power source G 86 108670106 Risk of burns from hot fuses beneath the cover H 86 0032311 5 safety rules 86 10867021 Risk of fire due to insufficient contact K 86 10867024 Unintended tripping due to modified settings L 86 0032310 Plant protected by surge arresters M 86 108670104 Risk of electric shock from active power source N 86 10867035 Faulty connection leads to destruction of the device 86 0099 Position of earthing P 86 108670105 Risk of burns due to hot components beneath the cover Q 86 10867022 Dangerous touch voltage even when device is disconnected Label is only present on inverters shipped to the USA j Danger to life from electric shock or electric arc when touching live components Disconnect the inverter see Section 6 1 2 Ensure that safety messages and labels are present and undamaged Replace th
3. Earthing terminal DC main line negative pole Terminal for remote tipping optional Communication terminal OlZz z String connections positive pole 7 1 4 Checking the Mounting Location and Installation Ensure that the mounting location is accessible 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 Check whether the enclosure is damaged If the enclosure is badly damaged or cracked contact the SMA Service Line for a replacement enclosure Ensure that the vent plugs in the enclosure of the Sunny String Monitor SSM 16 24 1 1 are intact and clean Inspect the cover latches and cover screws of the Sunny String Monitor SSM 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 SSM 16 24 11 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 Maintenance Manual SCCP WH B4 en 20 45 7 Maintaining the Accessories SMA Solar Technology AG 7 1 6 Checking the Enclosure Interior 1 2 3 4 A DANGER D
4. Central Inverter SUNNY CENTRAL 500CP JP 500CP XT 630CP XT 720CP XT 760CP XT 800CP XT 850CP XT 900 CP XT Maintenance Manual SCCP WH B4 en 20 98 4046720 Version 2 0 SMA Solar Technology AG Table of Contents Table of Contents Information on this 7 2 2 1 ss ahaa nios sd Ops es ere ta aces 10 2 1 Safety Precautions ere set et Scale ood I Ss Cain aman UE REA 10 2 2 Qualification of Skilled 11 2 3 Personal Protective 1 3 Maintenance 12 Sunny Central 13 4 1 Design ofthe Inverter oreet eter e eS res EN eee 13 ASD Type label wee tvi 13 5 Maintenance when Voltage is 14 5 1 Reading Error Messages and 14 5 2 Checking the DC 5 1 14 5 3 Checking the Circuit Breakers with Optiprotect Optional 16 5 4 Circuit Breaker Optional ee e 18 6 Maintenance under Voltage free Conditions 19 6 1 Disconnectng the 19 6 2 Removing the Panels lt tree ink ued asi ba teehee 22 6 3 Cleaning the Ventilation Er e eee eed 23 6 3 1 Cleaning the Ve
5. Ensure that the mounting location can be freely accessed without the need for additional equipment Ensure that the SMA String Combiner is securely in place 7 4 4 Checking the Base Plate Check whether the drainage plugs are dirty or damaged Clean or replace the drainage plugs if they are damaged or dirty Ensure that all cable glands are securely in place Ensure that the plug connectors are intact and securely in place 7 4 5 Checking the Enclosure and Enclosure Interior Ensure that the enclosure is undamaged and clean If the enclosure is badly damaged contact the SMA Service Line Ensure that the door lock is intact and clean 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 7 4 6 Checking the String Cables Check that the DC connectors are securely in place If the DC plug connectors are loose reconnect the string cables to the SUNCLIX DC plug connectors see SMA String Combiner installation manual Replace the DC connectors if they do not snap in correctly Ensure that the 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 installation manual of SMA String Combiner Maintenance Manual SCCP WH B4 en 20 67 7 Main taining the Accessori
6. 86 108670103 Risk of electric shock from active power source D 86 004610 Faulty connection leads to destruction of the device 86 0509 Earthing F 86 0514 Negative pole Maintenance Manual SCCP WH B4 en 20 47 7 Maintaining the Accessories SMA Solar Technology AG i K Y t Figure 14 Position of the labels the Sunny String Monitor SSM16 24 11 with SSM24 11 as an example Item SMA order number Description A 86 051488 Dangerous voltage warning B 86 108670101 Damage to the plant due to incorrectly rated fuses 86 108670102 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 from active power source F 86 05 1489 Dangerous voltage warning G 86 0514 Negative pole 48 SCCP WH B4 en 20 Maintenance Manual SMA Solar Technology AG 7 Maintaining the Accessories Item SMA order number Description H 86 1086701010 SSM isolation terminal risk of an electric arc do not remove isolation terminals under load 86 0512 Positive pole K 86 10868001 External view label for SSM24 11 with cable glands 86 10868002 External view label for SSM24 11 with DC connector 24 string
7. DC connector F Terminals or busbar G Plug connector for data cable H Condensation drain Cable glands for the string cable K Cable glands for DC main connection communication earthing signal contact or remote tripping optional 7 2 4 Checking the Mounting Location and Installation Remove all inflammable materials Ensure that the Sunny String Monitor is securely in place e Ensure that the Sunny String Monitor is not exposed to direct solar irradiation 7 2 5 Checking the Enclosure e Check whether the enclosure is damaged Replace the enclosure if it is badly damaged or cracked e Ensure that the vent plugs in the enclosure are intact and clean Ensure that the lock is intact and functional 7 2 6 Checking the Enclosure Interior 1 Danger to life from electric shock or electric arc when touching live components e Disconnect the Sunny String Monitor see Section 7 2 1 2 Ensure that the device is watertight Ensure that the drain plugs are intact and clean 4 Ensure that there is no condensation water inside the enclosure 54 SCCP WH B4 en 20 Maintenance Manual SMA Solar Technology AG 7 Maintaining the Accessories 7 2 7 Checking the Base Plate 1 EONA Danger to life from electric shock or electric arc when touching live components e Disconnect the Sunny String Monitor see Section 7 2 1 2 Ensure that all cable glands are sealed and securely in place 3 Ensure that
8. Maintenance under Voltage free Conditions 6 7 4 Function Test of Heating Element with Low Temperature Range Option Optional 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 if you are not wearing protective gloves Do not touch heating elements with bare hands e Wear personal protective equipment e Always maintain a safe distance when checking the function of heating elements Requirements Ll The miniature circuitbreaker of the external voltage supply must be switched on Figure 10 Position of the heating element and controller of the low temperature option L There are no disturbances a Position Description A Heating element with low temperature range option B Temperature control connection plug Heating element with low temperature range option Maintenance Manual SCCP WH B4 en 20 39 6 Maintenance under Voltage free Conditions SMA Solar Technology AG RON gt Switch the Sunny Central to Stop Open the inverter doors Remove the protective covers of the heating elements Remove the temperature control connection plug A contactor audibly switches off the inverter After about two minutes another contactor audibly switches off the control voltage X Is the contacto
9. delay or within three weeks at the latest Maintenance Manual SCCP WH B4 en 20 33 6 Maintenance under Voltage free Conditions SMA Solar Technology AG 6 5 4 Checking the Switch Cabinet for Corrosion Required maintenance material not included in the scope of delivery o Od 34 Touch up sticks brushes 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 Roof RAL 7004 Signal grey Base RAL 7005 Mouse grey Enclosure RAL 9016 Traffic white Abrasive cloth Degreaser Remove dirt To remove small area surface damage Sand the surface Clean the surface using degreaser Paint the surface To remove large area surface damage Sand the surface Clean the surface using degreaser Paint the entire surface SCCP WH B4 en 20 Maintenance Manual SMA Solar Technology AG 6 Maintenance under Voltage free Conditions 6 6 Mounting the Panels 1 EONA Danger to life from electric shock or electric arc when touching live components e Disconnect the inverter see Section 6 1 Mount the protective covers Fasten t
10. on the interface cabinet Remove the panels Remove the protective covers in the connection area 6 Ensure that all poles are free of voltage On the DC connection lugs DC busbars DC terminals On the AC connection lugs 22 SCCP WH B4 en 20 Maintenance Manual SMA Solar Technology AG 6 Maintenance under Voltage free Conditions 6 3 Cleaning the Ventilation 6 3 1 Cleaning the Ventilation Plate 1 Danger to life from electric shock or electric arc when touching live components Disconnect the inverter see Section 6 1 Remove the panels see Section 6 2 Remove the ventilation plate from the inverter cabinet Take hold of the underside of the ventilation plate and push upwards in the middle when removing Clean the ventilation plate with a brush or vacuum 5 Pushthe ventilation plate into the inverter cabinet The ventilation grid in the ventilation plate must face the rear panel The ventilation grid must be flush with the inverter enclosure X Does the ventilation plate not go all the way in Take hold of the underside of the ventilation plate and push upwards in the middle while pushing it in Maintenance Manual SCCP WH B4 en 20 23 6 Maintenance under Voltage free Conditions SMA Solar Technology AG 6 3 2 Cleaning the Air Duct and Insect Screens 1 71934 Danger to life from electric shock or electric arc when touching live components D
11. that there is no current flowing through the Sunny String Monitor If there is no DC circuit breaker disconnect the Sunny Central see installation manual for the Sunny Central If there are fuses in the Sunny Central remove them If there are no fuses in the Sunny Central remove the fuses from the DC main distributor Only open the isolation terminals on the Sunny String Monitor when it is switched off A DANGER Danger to life from electric arcs when removing the DC plug connector e Only remove all existing DC connectors when the Sunny String Monitor is switched off 7 1 2 Maintenance Interval Service the SMA String Combiner every 24 months Maintenance Manual SCCP WH B4 en 20 41 7 Maintaining the Accessories SMA Solar Technology AG 7 1 3 Overview of the Main Components Figure 1 1 Main components of the Sunny String Monitor SSM Item Description A Cover latch B DC fuses LEDs for displaying the operating state D Surge arrester E DC switches F Terminals for connecting the signalling cable for the response contact G Termina
12. the Sunny String Monitor If there is no DC switch disconnector disconnect the Sunny Central see the Sunny Central installation manual If there are fuses in the Sunny Central remove them see Sunny Central installation manual or If there are no fuses in the Sunny Central remove the fuses from the DC main distributor A DANGER Danger to life from electric arcs when opening fuse holders e Only open the fuse holders when the Sunny String Monitor is switched off A DANGER Danger to life from electric arcs when removing the DC plug connector e Only remove all existing DC connectors when the Sunny String Monitor is switched off SCCP WH B4 en 20 Maintenance Manual SMA Solar Technology AG 7 2 2 Maintenance Interval Service the Sunny String Monitor every 24 months 7 2 3 Overview of the Main Components 7 Maintaining the Accessories 22225 125 H K Figure 15 Main components of the Sunny String Monitor SSMxx 21 example ltem A Description Fuse holder Maintenance Manual SCCP WH B4 en 20 53 7 Maintaining the Accessories SMA Solar Technology AG Item Description B Plug connector for signal contact or remote tripping Surge arrester D Vent plug E SUNCLIX
13. AG 7 3 3 Overview of the Main Components 8 NM NH NH NE N NJ Figure 18 Main interior components Item Description A Sunny Main Box B Sunny Main Box Cabinet C DC busbar positive pole or negative pole depending on PV plant D DC fuses or disconnecting blades E DC inputs positive pole or negative pole depending on PV plant F Earthing terminal 7 3 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 7 3 5 Checking the Enclosure Check whether the enclosure is damaged If the enclosure is damaged contact the SMA Service Line Ensure that the enclosure is watertight 62 SCCP WH B4 en 20 Maintenance Manual SMA Solar Technology AG 7 Maintaining the Accessories 7 3 6 Checking the Enclosure Interior e Check whether the enclosure interior is damaged If the enclosure interior is damaged contact the SMA Service Line 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 Ensure that the door mecha
14. 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 String 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 1 If there is 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 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 42 Maintenance Interval Service the SMA String Combiner every 24 months 66 SCCP WH B4 en 20 Maintenance Manual SMA Solar Technology AG 7 Maintaining the Accessories 7 43 Checking the Mounting Location and Installation
15. 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 Checkthe earth connection and contact resistance to the earth potential 7 1 14 Checking the LEDs on the Measurement PCB 1 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 SMA Service Line Maintenance Manual SCCP WH B4 en 20 51 7 Maintaining the Accessories SMA Solar Technology AG 7 2 Maintaining the Sunny String Monitor SSM8 21 SSM16 21 SSM24 21 7 2 1 Disconnecting the Sunny String Monitor DANGER Danger to life from electric shock when touching live components of the Sunny String Monitor Observe the safety rules Disconnect the device 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 has no voltage supply Only unplug the DC connector when no current is present Risk of burns from touching hot components Wear personal protective equipment when working on the device Procedure 1 52 If there is a DC switch disconnector turn it off This ensures that there is no current flowing through
16. Positive pole L Material number of the label sheet with all safety message labels for all product variants Procedure 1 Danger to life from electric shock or electric arc when touching live components e Disconnect the Sunny String Monitor see Section 7 2 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 When doing so select a label that is correct for the product variant 3 Check whether the cover latches are undamaged and securely in place Replace the cover latches if they are damaged or loose Maintenance Manual SCCP WH B4 en 20 57 7 Maintaining the Accessories SMA Solar Technology AG 7 2 9 Checking the Fuse Holders 1 717954 Danger to life from electric arcs when opening fuse holders Only open the fuse holders when the Sunny String Monitor is switched off 2 Checkthe fuse holders for discoloration or changed appearance If the fuse holders are discoloured or changed in any way contact the SMA Service line 3 Ensure that each fuse holder opens and closes properly 7 2 10 Checking the Screw Terminal and Plug Connections 1 Danger to life from electric shock or electric arc when touching live components e Disconnect the Sunny String Monitor see Section 7 2 1 2 Ensure that the screw connections of the power cables are securely in place Check the scre
17. amp connections to the insulation and the clamps for discolouration or changes in appearance Replace the screw and clamp connections if they are discoloured or look different in any way 7 4 10 Checking the Surge Arrester e Check whether the ready indicator on the surge arrester is red If the ready indicator is red replace the protection module Maintenance Manual SCCP WH B4 en 20 69 8 Contact SMA Solar Technology AG 8 Contact If you have technical problems concerning our 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 e Installation address with GPS coordinates e Plant name Pictures of the faulty components Type and number of the PV modules connected SMA Solar Technology AG Sonnenallee 1 34266 Niestetal Germany www SMA de SMA Service Line Tel 49 561 9522 299 Fax 49 561 9522 3299 E Mail SunnyCentral Service SMA de 70 SCCP WH B4 en 20 Maintenance Manual 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 permiss
18. anger 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 device is watertight Ensure that the drain plugs and vent plugs are intact and clean Ensure that there is no condensation water inside the enclosure 7 1 7 Checking the Base Plate 1 46 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 vent plug on the Sunny String Monitor SSM is not dirty or damaged If the vent plug is dirty or damaged clean or replace it Ensure that all cable glands are sealed and securely in place Ensure that the plug connectors are intact and securely in place SCCP WH B4 en 20 Maintenance Manual SMA Solar Technology AG 7 1 8 Checking the Covers and Labels 7 Maintaining the Accessories A S p Figure 13 Position of the labels on the Sunny String Monitor SSM ltem SMA order number Description A 86 0520 Dangerous voltage warning B 86 0512 Positive pole C 86 108670101 Damage to the plant due to incorrectly rated fuses
19. chnology AG 6 Maintenance under Voltage free Conditions 6 52 Checking the Latches Door Stops and Hinges Required maintenance material not included in the scope of delivery O 1 A suitable water free and heat resistant lubricant e g WD 40 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 ubricating antifreeze to prevent them freezing over 6 5 3 Checking the Surface of the Switch Cabinet 1 2 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 three weeks at the latest If surfaces are corroded repair them without
20. cuit diagram of the inverter Contact the SMA Service Line if specifications are missing 1 7193 Danger to life from electric shock or electric arc when touching live components Disconnect the inverter see Section 6 1 2 Check that all screw connections on the power cables are tight If screw connections are loose tighten them using a torque wrench 3 Check the insulation and connections for discolouration and changes to their appearance If the insulation and connections are discoloured or look different contact the SMA Service Line 4 Check screw connections for damage and contact elements for corrosion If screw connections are damaged or contact elements are corroded replace them 6 4 6 Cleaning Heating Elements of the Low Temperature Range Option Optional Figure 6 Positions of heating elements 1 71934 Danger to life from electric shock or electric arc when touching live components Disconnect the inverter see Section 6 1 Open the inverter doors Remove the protective covers of the heating elements Remove dirt and dust from the heating elements Remove moisture oak WN Mount the protective covers of the heating elements Maintenance Manual SCCP WH B4 en 20 29 6 Maintenance under Voltage free Conditions SMA Solar Technology AG 6 4 7 Checking the Labels A
21. e Accessories Position SMA order number Description B 86 108670103 Risk of electric shock from active power source 86 108670109 Risk of an electric arc 86 051489 Dangerous voltage D 86 05081 Protective earth E 86 108670105 Risk of burns 86 108670109 Risk of an electric arc F 86 0512 L G 86 0514 L Ensure that the latches of the Plexiglas covers are undamaged and securely in place Replace the latches if they are damaged or loose 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 7 3 9 Checking the Fuses and Fuse Holders 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 3 10 Checking the Screw Connections and Clamp Connections e Ensure that the screw and clamp connections are securely in place e Ensure that the strain relief of the entire cabling is intact Maintenance Manual SCCP WH B4 en 20 65 7 Maintaining the Accessories SMA Solar Technology AG 7 4 Maintaining the SMA String Combiner 7 4 1 Disconneding the SMA String Combiner 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
22. e g Sunny String Monitor Open the doors of the interface cabinet Switch off the AC circuit breaker Disconnect the external voltage supply externally oN Oc Disconnect any additional external voltage Maintenance Manual SCCP WH B4 en 20 19 6 Maintenance under Voltage free Conditions SMA Solar Technology AG 9 Switch off the miniature circuit breaker of the external voltage supply and if necessary disconnect the internal power supply transformer 10 Switch off the miniature circuit breaker of the grid monitoring 11 If your inverter is equipped with Optiprotect string current monitoring ensure that the switches on the motor driven circuit breakers are in the OFF position If this is not the case set all switches to OFF 20 SCCP WH B4 en 20 Maintenance Manual SMA Solar Technology AG 6 Maintenance under Voltage free Conditions 12 Open the test and disconnect terminals 13 Ensure that all poles are free of voltage 14 Earth and short circuit the inverter 15 Cover or safeguard any adjacent live components Maintenance Manual SCCP WH B4 en 20 21 6 Maintenance under Voltage free Conditions SMA Solar Technology AG 6 2 Removing the Panels Danger to life from electric shock electric arc when touching live components Disconnect the inverter see Section 6 1 Remove the screws from the front panels using a Torx screwdriver Unfasten the earthing straps from the panels
23. e 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 Maintenance Manual SCCP WH B4 en 20 31 6 Maintenance under Voltage free Conditions SMA Solar Technology AG 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 8 Section drawing with top view of seals example A Item Description Seal Side panel Sealing area Hinge Door 160 Frame construction Required maintenance material not included in the scope of delivery o iF 32 A suitable water free and heat resistant lubricant A DANGER Danger to life from electric shock or electric arc when touching live components Disconnect the inverter see Section 6 1 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 removed check whether the seals in the side panels show any signs of damage in the sealing area If seals are damaged contact the SMA Service Line SCCP WH B4 en 20 Maintenance Manual SMA Solar Te
24. ench 3 Check the insulation and connections for discolouration and changes to their appearance If the insulation and connections are discoloured or look different contact the SMA Service Line Maintenance Manual SCCP WH B4 en 20 27 6 Maintenance under Voltage free Conditions SMA Solar Technology AG 6 4 4 Checking the Surge Arrester Figure 5 Position of the DEHNventil Item Description A Ready indicator Additional maintenance material that is required but not included in the scope of delivery Ll A testing device approved by the manufacturer of the surge arrester such as the PM20 by DEHN SOHNE GmbH Co KG Danger to life from electric shock or electric arc when touching live components e Disconnect the inverter see Section 6 1 2 Check whether the ready indicator is red If the ready indicator is red replace the surge arrester 3 Usethe testing device to check that the surge arrester is operational instructions for testing are included in the user manual of the testing device Replace the surge arrester if it is faulty 28 SCCP WH B4 en 20 Maintenance Manual SMA Solar Technology AG 6 Maintenance under Voltage free Conditions 6 4 5 Checking the Screw Connections of the Power Cables NOTICE Damage to screw connections from over tightening Only apply the prescribed torque to tighten loose screw connections Torque specifications are shown in the cir
25. es SMA Solar Technology AG 7 47 Checking the Covers and Labels Figure 21 Position of the labels on the SMA String Combiner Item Description A Dangerous voltage symbol B Risk of electric shock from fuse holder Risk of electric shock under the cover D Risk of an electric arc E Risk of burns F PV array earthing G Fuse rating 7 4 68 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 Check that the cover latches are undamaged and securely in place Replace the cover latches if they are damaged or loose 8 Checking the Fuses and Fuse Holders Ensure that all fuse holders are closed Ensure that the screw connections of the power cables are securely in place SCCP WH B4 en 20 Maintenance Manual SMA Solar Technology AG 7 Maintaining the Accessories 7 49 Checking the Screw Connections and Clamp Connections Check that the clamp connections of the string cable are securely in place Replace the clamp connections on the string cable if they are loose e Checkthat the clamp connections on the optional DC switch disconnector are securely in place Replace clamp connections if they are loose Check the screw and cl
26. evice to check whether the AC circuit breaker is ready for operation instructions are included in the manual of the testing device If the AC circuit breaker is not ready for operation contact the SMA Service line 18 SCCP WH B4 en 20 Maintenance Manual SMA Solar Technology AG 6 Maintenance under Voltage free Conditions 6 Maintenance under Voltage free Conditions 6 1 Disconnecting the Inverter DANGER Electric shock due to live voltage The components of the Sunny Central carry a voltage Touching components of the Sunny Central may result in death or severe injuries e Before performing 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 Check that no voltage is present Before doing any maintenance work disconnect the inverter from all voltage sources as described in this section i 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 Set the inverter key switch to Stop Wait 15 minutes This allows the capacitors to perform an electric discharge Externally disconnect the AC voltage of the medium voltage transformer a 1 Disconnect the DC voltage in the main distributor e g Sunny Main Box or the sub distribution
27. f tripped Contact the SMA Service Line i Maintenance intervals Plant size location and ambient conditions influence the maintenance intervals 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 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 SCCP WH B4 en 20 Maintenance Manual SMA Solar Technology AG 4 Sunny Central CP 4 Sunny Central CP 4 1 Design of the Inverter e pM Figure 1 Design of the Inverter Item Description A Inverter cabinet B Insect screen C Interface cabinet D Ventilation grid 4 2 Type Label You can identify the inverter by its type label The type label is located in the interface cabinet and inverter cabinet of the inverter The serial number is also located on the front of the inverter Maintenance Manual SCCP WH B4 en 20 13 5 Maintenance when Voltage is Present SMA Solar Technology AG 5 Maintenance when Voltage is Present 5 1 Reading Error Messages and Warnings You can connect a computer via the service interface on the outside of the interface cabinet If an error occurs read off and resolve the error usi
28. he earthing straps to the panels on the interface cabinet Torque 8 Nm Ensure that the earthing straps are firmly in place ak WN Fasten the panels in place Maintenance Manual SCCP WH B4 en 20 35 6 Maintenance under Voltage free Conditions SMA Solar Technology AG 6 7 Maintenance after Connecting the Control Voltage 6 7 1 Connecting the Control 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 Do not touch any live components of the inverter or the medium voltage grid Comply with all applicable safety regulations for handling medium voltage grids 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 the AC circuit breaker Connect the DC voltage in the main distribution box or the sub distribution box gt GO Connect the AC voltage of the medium voltage transformer externally 36 SCCP WH B4 en 20 Maintenance Manual SMA Solar Technology AG 6 Maintenance under Voltage free Conditions 6 7 2 Checking the Fans 1 Open the inverter doors 2 Switch on the miniature circuit breaker of the external voltage supply The fans should start to run X Have the fans failed t
29. inputs 86 10868003 External view label for SS 24 11 with DC connector 48 string inputs 86 10868004 External view label for SSM16 11 with 8x cable gland 86 10868005 External view label for SSM16 11 with DC connector 16 string inputs 86 10868006 External view label for SSM16 11 with DC connector 32 string inputs for SSM16 11 for SSM24 11 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 e Checkthat 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 71934 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 DC fuses and tension springs of the fuse holders are securely in place Maintenance Manual SCCP WH B4 en 20 49 7 Maintaining the Accessories SMA Solar Technology AG 7 1 10 Checking the Screw Connections and Clamp Connections 1 4 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 screw connections of the power cables are securely in place Ensure that the clamp connections of the photovoltaic strings are securely in place Ensure that the clamp connections of
30. ion 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 are available on paper from the usual sales channels if required Trademarks All trademarks are recognized 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 2004 to 2012 SMA Solar Technology AG All rights reserved Maintenance Manual SCCP WH B4 en 20 71 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 amp 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 Ko
31. isconnect the Sunny String Monitor see Section 7 2 1 2 Open the Sunny String Monitor Disconnect the voltage at the undervoltage release 4 Check whether the DC switch disconnector has switched to the tripped position If the DC switch disconnector has not switched to the tripped position contact SMA Service Line 5 Switch the voltage at the undervoltage release back on To switch on the DC switch disconnector 200 A and 280 A the voltage applied must be more than 85 of the nominal voltage Vy 6 Switch the DC switch disconnector to the Off position Switch the DC switch disconnector back to the On position 8 Close the Sunny String Monitor Maintenance Manual SCCP WH B4 en 20 59 7 Maintaining the Accessories SMA Solar Technology AG 7 2 14 Checking the Earth Connection 1 Danger to life from electric shock or electric arc when touching live components Disconnect the Sunny String Monitor see Section 7 2 1 2 Checkthe earth connection and contact resistance to the earth potential 7 2 15 Checking the LEDs on the Measurement PCB A n Figure 17 LED error on the String Monitor unit Item Description A Error EONA Danger to life from electric shock or electric arc when touching live components Disconnect the Sunny String Monitor see Section 7 2 1 2 If the red Error LED on the String Monit
32. isconnect the inverter see Section 6 1 2 Remove the screws from the right hand side insect screen 3 Pull the bottom of the right hand side insect screen forward thus removing the insect screen 4 Remove the screws from the left hand side insect screen 5 Pull the bottom of the left hand side insect screen forward thus removing the insect screen 24 SCCP WH B4 en 20 Maintenance Manual SMA Solar Technology AG 6 Maintenance under Voltage free Conditions 6 Vacuum the air duct from the outside or clean it with i a brush Ss 7 Vacuum the insect screens or clean them with a brush 8 Check the insect screen for visible damage The insect screens are not damaged X Are the insect screens damaged Replace the damaged insect screens 9 Insert the righthand side insect screen 10 Screw the right hand side insect screen into place Torque 20 Nm 11 Insert the left hand side insect screen Maintenance Manual SCCP WH B4 en 20 25 6 Maintenance under Voltage free Conditions SMA Solar Technology AG 12 Screw the lefthand side insect screen into place Torque 20 Nm 6 4 Maintaining the Interior of the Switch Cabinet 6 4 1 Checking the Interior of the Switch Cabinet 1 Danger to life from electric shock or electric arc when touching live components Disconnect the inverter see Section 6 1 2 Ensure that the switch cabinet is closed Remove dirt and dust from the inte
33. king the Enclosure js cas eee erster 62 7 3 6 Checking the Enclosure 63 7 3 7 Checking the Base 63 7 3 8 Checking the Covers and 63 7 3 9 Checking the Fuses and Fuse 65 7 3 10 Checking the Screw Connections and Clamp Connections 65 Maintaining the SMA 66 7 4 1 Disconnecting SMA 66 7 4 2 Maintenance Interval eese 66 7 4 3 Checking the Mounting Location and Installation 67 7 4 4 Checking the Base 67 Maintenance Manual SCCP WH B4 en 20 5 Table of Contents SMA Solar Technology AG 7 4 5 Checking the Enclosure and Enclosure Interior 67 7 4 6 Checking the String 67 7 4 7 Checking the Covers and 68 7 4 8 Checking the Fuses and Fuse 68 7 4 9 Checking the Screw Connections and Clamp Connections 69 7 4 10 Checking the Surge 69 8 Conta os sid ea in ean Ok DOOR a aR en os 70 6 SCCP WH B4 en 20 Maintenance Manual SMA Solar Technology AG Information on this Document 1 Information on this Document Validity This document is
34. ls for connecting the control of the auxiliary trigger 42 SCCP WH B4 en 20 Maintenance Manual SMA Solar Technology AG 7 Maintaining the Accessories Item Description Stud terminal for connecting the DC main cable Spring terminals for the string connections Plugs for connecting the strings Terminals for the earth connection Terminals for connecting the data cable Cable gland for connecting the DC main cable Cable glands for the string connections Cable glands for the earth connection Vent plug Cable glands for the communication connection Cable glands for connecting the remote tripping Cable glands for connecting the response contact optional Maintenance Manual SCCP WH B4 en 20 43 7 Maintaining the Accessories SMA Solar Technology AG G L K I H G Figure 12 Main components of the Sunny String Monitor SSM24 11 example ltem Description A DC fuses positive pole B Vent plug LEDs for displaying the operating state D DC switches E Surge arrester with ready indicator F DC fuses negative pole G Drain plugs 44 SCCP WH B4 en 20 Maintenance Manual SMA Solar Technology AG 7 Maintaining the Accessories Item Description String connections negative pole DC main line negative pole
35. ng Monitor 55 8 21 SSM16 21 SSM2 2 1 52 7 2 1 Disconnecting the Sunny String Monitor 52 7 2 2 Maintenance Interval uoua 00 eee eee 53 7 2 3 Overview of the Main 53 7 2 4 Checking the Mounting Location and Installation 54 7 2 5 Checking the 54 7 2 6 Checking the Enclosure 54 7 2 7 Checking the Base 55 7 2 8 Checking the Covers and 56 7 2 9 Checking the Fuse Holders 58 7 2 10 Checking the Screw Terminal and Plug Connections 58 7 2 11 Checking the Surge 58 7 2 12 Checking the Supply 59 7 2 13 Checking the Undervoltage Release Optional 59 7 2 14 Checking the Earth 60 7 2 15 Checking the LEDs on the Measurement PCB 60 Maintaining the Sunny Main Box Sunny Main Box Cabinet 6 7 3 1 Disconnecting the Sunny Main 61 7 3 2 Maintenance Interval esee eee 61 7 3 3 Overview of the Main 62 7 3 4 Checking the Mounting Location and Installation 62 78 5 Chec
36. ng the display or the user interface on the SC COM see Sunny Central operating manual 5 2 Checking the DC Switch Disconnector Figure 2 Indicators and switches on 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 SCCP WH B4 en 20 Maintenance Manual SMA Solar Technology AG 5 Maintenance when Voltage is Present 1 Switch the inverter to Stop 2 Open the doors of the interface cabinet Check that the DC switch disconnector is turned off and indicates the Off position 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 On position If the DC switch disconnector is not turned on and does not indicate the On position contact the SMA Service Line Switch the inverter to Stop 9 Test the switching operation 3 times 10 Close the doors of the interface cabinet Maintenance Manual SCCP WH B4 en 20 15 5 Maintenance when Voltage is Present SMA Solar Technology AG 5 3 Checking the Circuit Breakers with Optiprotect Optional
37. nism is securely in place and sealed 7 3 7 Checking the Base Plate Ensure that the foam on the base plate is intact 7 3 8 Checking the Covers and Labels A 0 0 SL o E a UM Bi u u u m R E E en Ee DOS 3 8 B Figure 19 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 from active power source 86 108670109 Risk of an electric arc Maintenance Manual SCCP WH B4 en 20 63 7 Maintaining the Accessories SMA Solar Technology AG Position SMA order number Description 86 051489 Dangerous voltage D 86 0508 1 Protective earth A B 33 1 ri G G G G ee 4 P O O fe Is Figure 20 Position of the labels on the Sunny Main Box Cabinet Position SMA order number Description A 86 0520 Active power source 64 SCCP WH B4 en 20 Maintenance Manual SMA Solar Technology AG 7 Maintaining th
38. ntilation 23 6 3 2 Cleaning the Air Duct and Insect Screens 24 6 4 Maintaining the Interior of the Switch Cabinet 26 6 4 1 Checking the Interior of the Switch 26 6 4 2 Checking the Fuses Disconnecting Blades 26 6 4 3 Checking the Screw 27 6 4 4 Checking the Surge 28 6 4 5 Checking the Screw Connections of the Power Cables 29 6 4 6 Cleaning Heating Elements of the Low Temperature Range Option Optional etu ec Co tc 29 6 4 7 Checking the labels persis cuiris 30 Maintenance Manual SCCP WH B4 en 20 3 Table of Contents SMA Solar Technology AG 6 5 Checking the Switch Cabinet from the 32 6 5 1 Checking the Door 32 6 5 2 Checking the Latches Door Stops and Hinges 33 6 5 3 Checking the Surface of the Switch Cabinet 33 6 5 4 Checking the Switch Cabinet for 34 6 6 Mounting the Panels 3224 ilu e den dau 35 6 7 Maintenance after Connecting the Control 36 6 7 1 Connecting the Control 36 6 7 2 Checking the eo park EE ERR EU Ee es 37 6 7 3 Checking
39. o start Contact the SMA Service Line 3 Close the inverter doors 6 7 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 if you are not wearing protective gloves Do not touch heating elements with bare hands e Wear personal protective equipment e Always maintain a safe distance when checking the function of the heating elements i Low humidity If the humidity is below 50 you will not be able to perform the function test as the minimum value of the hygrostat is 50 Maintenance Manual SCCP WH B4 en 20 37 6 Maintenance under Voltage free Conditions SMA Solar Technology AG Requirements Ll The miniature circuitbreaker of the external voltage supply must be switched on Figure 9 Position of the heating element and hygrostat Position Description A Heating element B Hygrostat 1 Open the inverter doors 2 Set the hygrostat to the minimum value Check whether the heating elements are radiating heat after a waiting time of five minutes If the heating elements do not radiate heat contact the SMA Service Line Reset the hygrostat to the initial value The initial value is included in the circuit diagram 5 Close the inverter doors 38 SCCP WH B4 en 20 Maintenance Manual SMA Solar Technology AG 6
40. ol voltage has been switched on personal protective equipment is required for all work performed The protective equipment must comply with Directive 89 686 EEC Any protective equipment that is stipulated by law or otherwise required must also be used Maintenance Manual SCCP WH B4 en 20 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 Note that cleaning see Section 6 3 Cleaning the Ventilation page 23 and corrosion protection see Section 6 5 3 Checking the Surface of the Switch Cabinet page 33 may be required more frequently depending on the conditions at the installation site SMA 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 Replacing the interior fan Every 13 years GFDI Soft Grounding 100 trippings due to short circuit ABB high performance circuit breaker Surge arrester I
41. or unit is on contact the SMA Service Line 60 SCCP WH B4 en 20 Maintenance Manual SMA Solar Technology AG 7 Maintaining the Accessories 7 3 Maintaining the Sunny Main Box Sunny Main Box Cabinet 7 3 1 Disconnecting the Sunny Main Box Danger to life from electric shock when live components of the Sunny Main are touched Observe the safety rules Disconnect the device 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 has no voltage supply If there are DC circuit breakers in the DC sub distribution boxes for example the Sunny String Monitor turn off the power to all DC circuit breakers of the DC sub distribution boxes that are connected to the Sunny Central see installation manual of the DC sub distribution box If there are no DC circuit breakers in the DC sub distribution boxes for example the Sunny String Monitor remove all fuses in the DC sub distribution boxes connected to the Sunny Central see installation manual for the DC sub distribution box If there are fuses in the Sunny Central remove them see Sunny Central installation manual 7 3 2 Maintenance Interval Service the Sunny Main Box every 24 months Maintenance Manual SCCP WH B4 en 20 61 7 Maintaining the Accessories SMA Solar Technology
42. ot touch any live components of 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 Ensure that no voltage is present before touching any part of the plant 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 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 two inverters located opposite each other blocks the escape route Only open one 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 ESD By touching electronic components you can damage or even destroy the inverter through electrostatic discharge ESD When working on the inverter or handing 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 PE connection on the doors This makes it safe to
43. r switching not audible Contact the SMA Service Line Check whether the heating elements are radiating heat after a waiting time of five minutes If the heating element does not radiate heat contact the SMA Service Line Insert the temperature control connection plug A contactor audibly switches on the control voltage After about two minutes another contactor audibly switches on the inverter X 15 the contactor switching not audible Contact the SMA Service Line 7 Mount the protective covers of the heating elements 8 40 Close the inverter doors SCCP WH B4 en 20 Maintenance Manual SMA Solar Technology AG 7 Maintaining the Accessories 7 Maintaining the Accessories 7 1 Maintaining the Sunny String Monitor SSM 55 16 11 SSM24 11 7 1 1 Disconneding the Sunny String Monitor DANGER Danger to life from electric shock when touching live components of the Sunny String Monitor Observe the safety rules Disconnect the device 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 has no voltage supply Only open the isolation terminals when the device is off Only unplug the DC connector when no current is present If there is a DC circuit breaker in the Sunny String Monitor disconnect it This ensures
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45. rior of the switch cabinet and from all assemblies e g DC switch disconnector and AC circuit breaker 4 Remove moisture 6 4 2 Checking the Fuses Disconnecting Blades 1 EONA Danger to life from electric shock electric arc when touching live components e Disconnect the inverter see Section 6 1 2 Check the fuses disconnecting blades and tension springs for discolouration or changes to their appearance If the fuses disconnecting blades or tension springs are discoloured or look different replace them 3 Check insulation and terminals for discolouration and changes to their appearance If the insulation or terminals are discoloured or look different contact the SMA Service Line 26 SCCP WH B4 en 20 Maintenance Manual SMA Solar Technology AG 6 Maintenance under Voltage free Conditions 6 4 3 Checking the Screw Connections 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 L 71793 Danger to life from electric shock or electric arc when touching live components Disconnect the inverter see Section 6 1 2 Check that screw connections on all assemblies e g DC switch disconnectors and AC circuit breakers are securely in place If screw connections are loose tighten them using a torque wr
46. sential requirement for achieving a specific goal Desired result HB A problem that might occur Typography Typography Usage Example bold Display Messages Select the ExITrfErrEna operating Elements on a user parameter and set to Off interface Select the Operating Operating parameters parameters tab Connections e Fuse holders e Elements to be selected e Elements to be entered Nomenclature In this manual the Sunny Central of the CP production series is also referred to as Sunny Central or inverter In this manual the Sunny Central Communication Controller is also referred to as SC COM SCCP WH B4 en 20 Maintenance Manual SMA Solar Technology AG Abbreviations Information on this Document Abbreviation Designation Explanation AC Alternating Current DC Direct Current ESD Electrostatic Discharge GFDI Ground Fault Detection Interruption PE Protective Earth Protective conductor PV Photovoltaics Maintenance Manual SCCP WH B4 en 20 9 2 Safety SMA Solar Technology AG 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 All work must be carried out as described in this manual Observe all safety precautions Observe all safety precautions in this manual and the inverter installation manual Do n
47. the DC connectors are intact and securely in place Maintenance Manual SCCP WH B4 en 20 55 7 Maintaining the Accessories SMA Solar Technology AG 7 2 8 Checking the Covers and Labels SUNNY STRING MONITOR umm Figure 16 Position of the labels in and on the Sunny String Monitor SSMxx 2 1 example 56 SCCP WH B4 en 20 Maintenance Manual SMA Solar Technology AG 7 Maintaining the Accessories Item SMA order number Description A 86 0043673 Risk of burns due to hot components beneath the cover B 86 051488 Dangerous voltage warning C 86 0514 Negative pole L D 86 0043673 3 labels with safety messages on fuses and fuse holders E 86 0043673 The negative pole in the PV array must be earthed in the inverter F 86 0043673 2 labels Risk of electric shock from active power source and Damage to the plant due to incorrectly rated fuses Maximum output current 200 A or Risk of electric shock from active power source and Damage to the plant due to incorrectly rated fuses Maximum output current 280 A G 86 0043673 The positive pole of the PV array must be earthed in the inverter H 86 0512
48. the Heating Element and Hygrostat 37 6 7 4 Function Test of Heating Element with Low Temperature Range Option 39 7 Maintaining the Al 7 1 Maintaining the Sunny String Monitor SSM 10 11 55 224411 habe E ERE ME 41 7 1 1 Disconnecting the Sunny String Monitor 41 7 1 2 Maintenance Interval llle sees 41 7 1 3 Overview of the Main 42 7 1 4 Checking the Mounting Location and Installation 45 7 1 5 Checking the Enclosure eee eee A5 7 1 6 Checking the Enclosure 46 7 1 7 Cheeking etre 46 7 1 8 Checking the Covers and 47 7 1 9 Checking the Fuses and Fuse 49 7 1 10 Checking the Screw Connections and Clamp Connections 50 7 1 11 Checking the Surge 50 7 1 12 Checking the Supply 5 7 1 13 Checking the Earth 5 7 1 14 Checking the LEDs on the Measurement PCB 5 4 SCCP WHB4 en 20 Maintenance Manual SMA Solar Technology AG Table of Contents 7 2 7 3 7 4 Maintaining the Sunny Stri
49. the optional DC circuit breaker are securely in place Check the screw and clamp connections to the insulation and the clamps for discolouration or changes in appearance If the screw and clamp connections are discoloured or look different in any way replace them Ensure that the shield clamping saddle is securely in place 7 1 11 Checking the Surge Arrester 1 2 50 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 whether the ready indicator on the surge arrester is red If the ready indicator is red replace the protection module SCCP WH B4 en 20 Maintenance Manual SMA Solar Technology AG 7 Maintaining the Accessories 7 1 12 Checking the Supply Voltage Required maintenance material not included in the scope of delivery Ll Voltmeter Requirement The miniature circuitbreaker of the voltage supply for the Sunny Central must be switched on 1 7193 Danger to life from electric shock or electric arc when touching live components Disconnect the Sunny String Monitor see Section 7 1 1 2 Measure the supply voltage between the terminals and the plug connectors M 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 necessary 7 1 13 Checking the Earth Connection 1
50. touch electronic components Environmental Influences Moisture and dust penetration will damage the inverter Do not open the inverter when it is raining humidity is over 95 Only perform maintenance in a dry and dustfree environment f necessary use a protective tent such as the SMA service tent 10 SCCP WH B4 en 20 Maintenance Manual SMA Solar Technology AG 2 Safety 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 manual must be accessible to all service and maintenance personnel at all times Safely store this manual within the immediate area of the inverter Warning Signs Warning signs must be clearly legible at all times Replace warning signs if damaged 2 2 Qualification of Skilled Persons The work described in this document must be performed by skilled persons only Skilled persons must have the following qualifications 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 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 contr
51. valid for the following device types SC 500CPJP SSM SC 500CP XT e SSM16 11 C 630CP XT e SSM24 11 e SCZ720CPXT e SSM821 SCZ60CP XT e SSM16 21 SC 800CP XT e SSM24 21 SC 850CP XT e Sunny Main Box SC 900CP XT Sunny Main Box Cobinet SMA String Combiner Target Group 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 Qualification of Skilled Persons page 11 Additional Information For additional information on third party components please contact the relevant manufacturer 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 SCCP WH B4 en 20 7 1 Information on this Document SMA Solar Technology AG Symbols Symbol Explanation A DANGER 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 could result in property damage Information that is important for a specific topic or goal but is not safety relevant Indicates an es
52. w and clamp connections to the insulation and the clamps for discolouration or changes in appearance If the screw and clamp connections are discoloured or look different in any way replace them 4 Ensure that the plug connectors are intact and securely in place 7 2 11 Checking the Surge Arrester 1 Danger to life from electric shock or electric arc when touching live components e Disconnect the Sunny String Monitor see Section 7 2 1 2 Check whether the ready indicator on the surge arrester is red If the ready indicator is red replace the protection module 58 SCCP WH B4 en 20 Maintenance Manual SMA Solar Technology AG 7 Maintaining the Accessories 7 2 12 Checking the Supply Voltage Required maintenance material not included in the scope of delivery O Voltmeter Requirement Ll The miniature circuit breaker of the voltage supply for the Sunny Central must be switched on L 7193 Danger to life from electric shock or electric arc when touching live components e Disconnect the Sunny String Monitor see Section 7 2 1 2 Measure the supply voltage at the plug connector on the lowest String Monitor unit 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 necessary 7 2 13 Checking the Undervoltage Release Optional 1 EONA Danger to life from electric shock or electric arc when touching live components e D
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