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SMA

Technologie AG

Electrical Connection

Installation Guide

SMC50A_60A-IEN073320

Page 33

Design Notes

Check the following points below:

Step

Test

Do all the strings have the same number of series-connected modules?

How high is the maximum reverse current in a defective string at nominal
conditions?
Example: generator with 4 strings of modules at 5 A short-circuit current
The maximum reverse current is 3 x 5 A = 15 A.

Are the modules suitable for such a reverse current?

If not: Have appropriate measures been taken in order to avoid these
currents (e.g. string fuse in each string)?

Are the plug connectors of the modules and the inverter suitable for such a
reverse current?

Is the string wiring suitable for such a reverse current?

Содержание Sunny Mini Central 5000A

Страница 1: ...Sunny Mini Central SMC 5000A 6000A Inverter for three phase grid feeding PV plants Installation Guide Version 2 0 SMC50A_60A IEN073320 IME SMC50A_60A...

Страница 2: ......

Страница 3: ...es 11 4 Overview of the Device 12 4 1 Identification 12 4 2 Dimensions 13 4 3 Electronic Solar Switch ESS 15 4 4 Interior View 16 5 Installation 18 5 1 Selecting an Installation Location 18 5 2 Requir...

Страница 4: ...5 9 Hand over to the Operator 57 10 Opening and Closing the Sunny Mini Central 58 10 1 Safety Instructions 58 10 2 Opening of the Sunny Mini Central 59 10 3 Closing of the Sunny Mini Central 60 11 Tro...

Страница 5: ...Disposal 74 14 Technical Data 75 14 1 Sunny Mini Central SMC 5000A 75 14 2 Sunny Mini Central SMC 6000A 78 14 3 General Data 81 14 4 Sunny Mini Central Operating Parameters 82 14 4 1 Explanation of t...

Страница 6: ...Content SMA Technologie AG Page 6 SMC50A_60A IEN073320 Installation Guide...

Страница 7: ...upply company may install and commission the inverters The instructions assume that you the installer are familiar with electrical installations and know the corresponding rules and regulations 1 3 Ex...

Страница 8: ...into a low voltage grid with a nominal voltage of 220 to 240 V and 50 Hz or 60 Hz Principle of a solar power system with a Sunny Mini Central SMC 5000A or SMC 6000A Do not use the Sunny Mini Central f...

Страница 9: ...reach more than 60 C Touching these parts could result in severe burns Once the handle of the Electronic Solar Switch has been pulled out the Sunny Mini Central provides protection rating IP21 Thus it...

Страница 10: ...le at all times 1 Disconnecting the device Before you start to work on the unit disconnect all wires which could carry voltage to the area you are working on 2 Protect against reenergizing To prevent...

Страница 11: ...t The information regarding operational safety refers to the regulations of the European Union valid at the time the inverter was produced The installer is obliged to make sure that the mentioned safe...

Страница 12: ...number device specific key data the CE mark and SMA contact information The following is an example of a Sunny Mini Central SMC 6000A name plate SMA Technologie AG www SMA de SUNNY MINI CENTRAL Photov...

Страница 13: ...SMA Technologie AG Overview of the Device Installation Guide SMC50A_60A IEN073320 Page 13 4 2 Dimensions 242 mm 613 mm 468 mm...

Страница 14: ...73320 Installation Guide Wall bracket and rear panel 8 5 2 6 2 6 7 8 11 0 2 2 8 6 7 6 43 3 2 0 1 2 1 0 1 2 2 0 2 2 7 0 48 7 0 2 1 2 5 8 2 5 1 2 5 8 2 5 0 9 4 x Specifications in cm Holes for optional...

Страница 15: ...the AC side 2 Pulling off the Electronic Solar Switch handle 3 Disconnecting the DC plug connectors Assembly The Electronic Solar Switch consists of a handle on the underside of the inverter and an a...

Страница 16: ...0A_60A IEN073320 Installation Guide 4 4 Interior View The following diagram gives a schematic overview of the various components and connection points inside the Sunny Mini Central SMC 5000A and SMC 6...

Страница 17: ...e 48 D Jumper for communication Page 48 E Sunny Display Page 54 F Jumper for fan testing Page 69 G Operating status LEDs Page 55 H Connection terminals for mains cable AC Page 41 I Cable duct for main...

Страница 18: ...ethod of installation is suitable for the weight of approximately 63 kg and the dimensions of 468 mm x 613 mm x 242 mm width x height x depth of the Sunny Mini Central 2 The following minimum clearanc...

Страница 19: ...its weight of 63 kg 6 The Sunny Mini Central is not installed in areas where highly flammable materials are stored or in potentially explosive areas 7 The Sunny Mini Central is not exposed to direct s...

Страница 20: ...ontally 14 The Sunny Mini Central should ideally be installed at eye level to allow operating conditions to be read at all times Foundation 15 The Sunny Mini Central is mounted on a solid surface 16 T...

Страница 21: ...attaching the wall bracket to the wall 1 appropriate spanner attaching the wall bracket to the wall 1 hexagon allen key 5 mm attaching the Sunny Mini Central to the wall bracket 1 steel bar with max d...

Страница 22: ...kg Step Instruction Mounting the Wall Bracket 1 For mounting the wall bracket use two to four of the six holes in the middle 2 Mark the positions of the drill holes by using the wall bracket as a dril...

Страница 23: ...serting a steel bar B diameter max 30 mm 5 Hang the Sunny Mini Central using the mounting holes on the rear face into the wall bracket Take care to ensure that the Sunny Mini Central locks audibly int...

Страница 24: ...age 92 Optional Anti theft Protection 9 To protect the Sunny Mini Central against theft the rear face can be secured to the wall at the bottom using 2 so called single use bolts The other two holes ar...

Страница 25: ...r and securing the additional grounding terminal to the housing if required 1 cable with external diameter between 11 and 25 mm AC connecting cable 1 stripping pliers stripping the AC cable 1 flathead...

Страница 26: ...ase of the Sunny Mini Central When connecting the unit to the power supply do not deviate from the sequence described here A Plug connectors for connecting the PV strings B Plug connector for connecti...

Страница 27: ...ectors of the Sunny Mini Central to be connected to it A pre assembled set for connecting the free cable ends from a string is available as an optional accessory from SMA 3 Make sure that the followin...

Страница 28: ...e section 6 3 1 Requirements Page 27 WARNING Dangerously high voltages may be present Danger of death Make sure that you only use measuring devices with a DC input voltage range up to at least 600 V 3...

Страница 29: ...cluded in the delivery 8 Reinsert the handle of the Electronic Solar Switch in the socket on the underside of the Sunny Mini Central The Electronic Solar Switch can be damaged if it has not been attac...

Страница 30: ...avoided adequately when the strings are of the same length Since shadowing of the modules has no significant effect on UPV 0 even in this situation no significant reverse current occurs In failure fre...

Страница 31: ...and extremely rare in practice preventative measures must still be taken After all these types of faults carry a high potential for damage and danger since all modules in the affected string may be da...

Страница 32: ...a defect string can reach no higher value than the value of the short circuit current of the intact string 2 String diodes The so called string diodes connected in series with the individual strings...

Страница 33: ...tive string at nominal conditions Example generator with 4 strings of modules at 5 A short circuit current The maximum reverse current is 3 x 5 A 15 A 3 Are the modules suitable for such a reverse cur...

Страница 34: ...values for AC output Voltage range default setting per DIN VDE 0126 1 1 198 V 253 260 Va Voltage range adjustable operating range 180 V 265 V Frequency range default setting per DIN VDE 0126 1 1 47 5...

Страница 35: ...0 V limit is exceeded it switches off immediately and displays a grid error message If voltage rise protection is not required in the relevant grid area outside Germany it is deactivated by means of p...

Страница 36: ...W per phase Consequently only one Sunny Mini Central may be installed per phase in this example A higher output per phase without causing a disconnection because of AC overvoltage requires better conn...

Страница 37: ...ctive earth connection at the AC terminal the Sunny Mini Central is also equipped with an additional protective earth connection directly on the housing This can be used if a second protective earth c...

Страница 38: ...he different cable cross sections Cable cross section 4 0 mm 6 0 mm 10 0 mm 16 0 mm 25 0 mm Max cable length 12 4 m 18 6 m 31 1 m 49 7 m 77 7 m With three phase connection and symmetrical feeding ther...

Страница 39: ...he different cable cross sections Cable cross section 4 0 mm 6 0 mm 10 0 mm 16 0 mm 25 0 mm Max cable length 10 3 m 15 5 m 25 9 m 41 4 m 64 8 m With three phase connection and symmetrical feeding ther...

Страница 40: ...Circuit Breaker Page 44 No loads should be connected to this power circuit A circuit breaker s load disconnecting properties can be utilized to disconnect the inverter from the grid under load A scre...

Страница 41: ...or for assistance The inverter can temporarily feed power into the grid with a maximum output voltage of 260 V However the 10 minute average must not exceed 253 V 2 Isolate the grid connection switch...

Страница 42: ...s required you can use the additional connection terminal directly on the Sunny Mini Central s housing for this purpose Proceed as follows 1 Insert the terminal clamp in the slits and screw the termin...

Страница 43: ...t to also reattach the washers The toothing of the washers must face toward the housing cover The screws must be tightened with approximately 6 Nm torque in order to guarantee both the sealing of the...

Страница 44: ...this limits the current that can flow and therefore determines the response behavior of the circuit breaker Adequate separation between the circuit breakers to avoid excessive heating Selectivity Prot...

Страница 45: ...rlying conditions limit the maximum fuse protection for the cable In our example we assume that the chosen cable 6 mm is ideally routed and can take a nominal current of 32 2 A Selecting the line circ...

Страница 46: ...he maximum output current of the inverter used It will trip under rated operating conditions Solution 1 Use a 35 A line circuit breaker As a result the maximum current carrying capacity would be 26 A...

Страница 47: ...47 As well as the thermal rating of the circuit breakers the applicable DIN VDE standards must also be taken into account The main ones that apply here are DIN VDE 0100 part 410 DIN VDE 0100 part 430...

Страница 48: ...nternet at www SMA de This section describes the installation of the communication interface in the Sunny Mini Central The detailed wiring diagram for each communication interface can be found in the...

Страница 49: ...Mini Central using the silicone tube provided The silicone tube is imperative for safety reasons Without this silicone tube the interface may not be operated 6 Lay the cable in area B as shown in the...

Страница 50: ...base of the Sunny Mini Central B Cable route gray surface C PE connector D Screw terminals for connection of the communication wires E Jumper slots F Interface port Jumper A Jumper B Jumper C RS232 R...

Страница 51: ...ronic Solar Switch is securely attached the AC power cable is fully connected and the line circuit breaker is laid out correctly Commissioning Procedure Step Instruction 1 First of all switch the line...

Страница 52: ...lting from excessive DC input voltage 1 Check the DC input voltage again to make sure it is within the limits stated in section 6 3 1 Requirements Page 27 If the input voltage is too high contact the...

Страница 53: ...may be due to the fact that the AC wire is not correctly connected or the circuit breaker is not switched on If a measured value is responsible for the fault condition then the value measured at the t...

Страница 54: ...underside of the display assemblies inside the Sunny Mini Central Proceed as follows 1 Open the Sunny Mini Central as described in section 10 2 Opening of the Sunny Mini Central Page 59 2 Set the swi...

Страница 55: ...the DC input voltage again to make sure it is within the limits stated in section 6 3 1 Requirements Page 27 If the input voltage is too high contact the planner installer of the PV generator for assi...

Страница 56: ...s out for 3 seconds and then flashes briefly twice there is a grid fault In this case that may be due to the fact that the AC cable has not yet been cabled correctly or that the line circuit breaker h...

Страница 57: ...s display 5 handling of additional communication components 6 contact partner in case of a failure 7 keep the documents to hand close to the Sunny Mini Central The following documents are handed over...

Страница 58: ...al damage or injury to persons which could be fatal Before working on the Sunny Mini Central with the cover removed the AC and DC voltages must therefore be disconnected from the Sunny Mini Central an...

Страница 59: ...r Switch off the Sunny Mini Central Be sure to pull the handle downwards and slightly towards the wall There is a contact in the middle that automatically starts the switching process when the handle...

Страница 60: ...rantee both the sealing of the housing and the grounding of the cover Then tighten the four remaining screws as well If you should lose a screw or washer the Sunny Mini Central accessories kit contain...

Страница 61: ...t has not been attached properly The handle must be firmly attached to the Electronic Solar Switch s socket and rest against the housing Check that the handle is positioned correctly before recommissi...

Страница 62: ...ng within 24 hours and then given to a shipping company and the repair service of SMA Technologie AG 11 1 overview Inappropriate problem solving may cause serious injury to persons or material damage...

Страница 63: ...he DC and AC connections as described in section 10 2 Opening of the Sunny Mini Central Page 59 2 Taking one DC plug connector at a time measure the voltages between one DC plug connector of a string...

Страница 64: ...x the ground fault before you can reconnect this string You have found no ground fault It is likely that one of the thermally monitored varistors is defective In this case proceed as described in sect...

Страница 65: ...ck all the varistors and see if there is a conducting connection between connectors 2 and 3 The positions of the varistors in the Sunny Mini Central can be seen in the figure in section 4 Overview of...

Страница 66: ...tors not just the one that is obviously defective If no replacement varistors are locally available the Sunny Mini Central can temporarily run without them To do this remove the varistors you identifi...

Страница 67: ...information can also be obtained by using one of the communication options Check the heat dissipation as described in section 12 1 Checking Heat Dissipation Page 67 if during a visual inspection you n...

Страница 68: ...re laid out from step 4 onwards 4 The fans are attached to the housing via three snap fits Press the two front snap fits back and the rear snap fit forwards 5 Remove the fans by pulling them slowly an...

Страница 69: ...cluded in the Sunny Mini Central accessories kit Check the fans as follows Step Instruction Setting the Parameter 1 Request the installer password on the SMA Serviceline contact see Page 92 2 Set the...

Страница 70: ...The Sunny Mini Central recognizes the jumper only after the system has been restarted i e all LEDs must have gone out before a restart 5 Check the fans air flow The Sunny Mini Central sucks air in fr...

Страница 71: ...und on the sides of the housing Place your fingers in the space between the top of the housing and the handle covers and gently pull the handle covers out of their bracket 2 Clean the handle covers wi...

Страница 72: ...wear before you attach it To do this check the metal tongues on the inside of the plug for brown discoloration If one of the metal tongues is completely burned out see figure below then the Electroni...

Страница 73: ...described in section 10 2 Opening of the Sunny Mini Central Page 59 2 Disconnect the AC cable 3 Close the Sunny Mini Central with the six screws and the corresponding washers 4 Remove the two screws...

Страница 74: ...ambient temperatures are always between 25 C and 60 C 13 4 Disposal Dispose of the Sunny Mini Central at the end of its service life in accordance with the disposal regulations for electronic scrap wh...

Страница 75: ...sed on 10 C cell temperature Input voltage MPP range UPV 213 V 600 V UACmin 246 V 600 V DC 230 V AC Max input current IPV max 26 A Max input power PDC 5750 W All pole isolator on the DC input side DC...

Страница 76: ...id voltage complying with DIN VDE 0126 1 1 UAC 198 253 V 260 Va Voltage range extended operating range UAC 180 V 265 V Nominal operating frequency fACnom 50 Hz 60 Hz Operating range grid frequency com...

Страница 77: ...ini Central can temporarily feed power into the grid with a maximum output voltage of 260 V However DIN VDE 0126 1 1 stipulates that the average voltage over 10 minutes must not exceed 253 V That mean...

Страница 78: ...C cell temperature Input voltage MPP range UPV 213 V 600 V UACmin 246 V 600 V DC 230 V AC Max input current IPV max 26 A Max input power PDC 6300 W All pole isolator on the DC input side DC plug conn...

Страница 79: ...d voltage complying with DIN VDE 0126 1 1 UAC 198 253 V 260 Va Voltage range extended operating range UAC 180 V 265 V Nominal operating frequency fACnom 50 Hz 60 Hz Operating range grid frequency comp...

Страница 80: ...Central can temporarily feed power into the grid with a maximum output voltage of 260 V However DIN VDE 0126 1 1 stipulates that the average voltage over 10 minutes must not exceed 253 V That means f...

Страница 81: ...ove sea level Fan connections designed for safe disconnection in accordance with DIN EN 50178 1998 04 Dimensions W x H x D 468 mm x 613 mm x 242 mm approx External Interfaces Data transfer via separat...

Страница 82: ...the average over 10 minutes exceeds the threshold value of 253 V the Sunny Mini Central disconnects itself from the grid Once the average over 10 minutes returns to a value of less than 253 V the Sunn...

Страница 83: ...rameter settings for Great Britain Other parameter settings can be defined here for countries where no predefined setting exists Trimmed If country specific parameters have been changed trimmed is sho...

Страница 84: ...rid monitoring can only be changed after entering the SMA grid guard password KI Wind Reg Control factors in Turbine mode Further information on this topic can be found in the Windy Boy instruction ma...

Страница 85: ...rted Volatil prevents the parameters being stored in the EEPROM the parameters are only stored until the next restart T Max Fan Temperature for the maximum fan speed T Start The period the Sunny Mini...

Страница 86: ...ologie AG Page 86 SMC50A_60A IEN073320 Installation Guide Usoll Konst PV desired voltage for constant operational voltage These parameters are only important when the Betriebsart parameter is set to U...

Страница 87: ...rd 0 10 0 0 AntiIsland Freq mHz 0 1 2000 500 500 Betriebsart MPP Ikonst Stop Turbine Mode U konst Off_grid MPP MPP Control Auto Grid Bridge Auto Auto Default GER VDE0126 1 1 GB G83 AUS AS4777 USA UL17...

Страница 88: ...min kOhm 0 10000 1000 1000 Speicherfkt no function no function Storage Speicher permanent volatile permanent permanent T Max Fan grdC 0 110 90 90 T Start s 5 1600 10 10 T Start Fan grdC 0 110 70 70 T...

Страница 89: ...rsonal SMA grid guard password Inst Code Call the SMA Serviceline to obtain your personal SMA grid guard password You can see the default settings of the Sunny Mini Central on the name plate see secti...

Страница 90: ...e table in section 14 4 2 Name Short descr Country settings Germany Australia Great Britain Italy Spain ACVtgRPro V 253 253 253 253 253 Default GER VDE0126 1 1 AUS AS4777 GB G83 IT DK5950 SP RD1663 dF...

Страница 91: ...yed out parameters are only displayed in installer mode The following parameters are displayed in the parameter list but cannot be changed Name Short descr Default setting SMC 5000A SMC 6000A Fac Pder...

Страница 92: ...tline Please have the following information available when you contact SMA Inverter type Serial number of the Sunny Mini Central Type and number of modules connected Communication method Blink code or...

Страница 93: ...SMA Technologie AG Contact Installation Guide SMC50A_60A IEN073320 Page 93...

Страница 94: ...protection conditions Altering the product or supplied software without authority The product malfunctions due to operating attached or neighboring devices beyond statutory limit values In case of unf...

Страница 95: ......

Страница 96: ...Technologie AG Hannoversche Strasse 1 5 34266 Niestetal Germany Tel 49 561 9522 4000 Fax 49 561 9522 4040 E mail sales SMA de Freecall 800 SUNNYBOY Freecall 800 78669269 Innovation in Systems Technol...

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