Operating Manual - SUNNY TRIPOWER 20000TL
Contents
1. If necessary two screw anchors suitable for the support surface and the screws 18 STP20 25TL BE en 1 1 Operating Manual SMA Solar Technology AG 5 Mounting O For transporting the inverter with a crane two eye bolts suitable for the weight of the inverter size M10 L1 To secure the inverter from being lifted off two screws washers and screw anchors that are suitable for the support surface CAUTION Risk of injury when lifting the inverter or if it is dropped The inverter weighs 61 kg There is risk of injury if the inverter is lifted incorrectly or dropped while being transported or when attaching it to or removing it from the wall mounting bracket Carry and lift the inverter in an upright position with several people without tilting it With one hand grasp the recessed grip and with the other hand support the top part of the enclosure This will prevent the inverter tipping forward If the inverter is to be transported and lifted with a crane remove the filler plugs on the top of the inverter and screw the eye bolts into the threads A CAUTION Risk of burns due to hot enclosure parts Some parts of the enclosure can get hot during operation e Mount the inverter in such a way that it cannot be touched inadvertently during operation Procedure 1 CAUTION Risk of injury due to damaged cables There may be power lines or other supply lines e g gas or water routed in the wall2. Operating Manual SUNNY TRIPOWER 20000TL 25000TL STP20 25TL BE en 11 Version 1 1 AMERICAN ENGLISH Legal Provisions SMA Solar Technology AG Legal Provisions The information contained in these documents is property of SMA Solar Technology AG Any publication whether in whole or in part requires prior written approval by SMA Solar Technology AG Internal reproduction used solely for the purpose of product evaluation or other proper use is allowed and does not require prior approval SMA Warranty You can download the current warranty conditions from the Internet at www SMA Solar com Trademarks All trademarks are recognized even if not explicitly identified as such A lack of identification does not mean that a product or symbol is not trademarked The BLUETOOTH word mark and logos are registered trademarks of Bluetooth SIG Inc and any use of these marks by SMA Solar Technology AG is under license Modbus is a registered trademark of Schneider Electric and is licensed by the Modbus Organization Inc QR Code is a registered trademark of DENSO WAVE INCORPORATED Phillips and Pozidriv are registered trademarks of Phillips Screw Company is a registered trademark of Acument Global Technologies Inc 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 2014 SMA Solar Technology AG All rights
3. e 5 1 tE it eS E E E I LLL e 52 NU est A a 647 mm Figure 3 Position of the anchoring points Recommended clearances If you maintain the recommended clearances adequate heat dissipation will be ensured Thus you will prevent power reduction due to excessive temperature Maintain the recommended clearances to walls as well as to other inverters or objects L1 If multiple inverters are mounted in areas with high ambient temperatures increase the clearances between the inverters and ensure sufficient fresh air supply Operating Manual 5 20 25 11 17 5 Mounting SMA Solar Technology AG E RE 300 mm i i 300 50mm e n E v amp 00 Figure 4 Recommended clearances Permitted and prohibited mounting positions The inverter must be mounted one of the permitted positions This will ensure that no moisture can penetrate the inverter The inverter should be mounted in such a way that LED signals can be read without difficulty 15 Figure 5 Permissible and impermissible mounting positions 5 2 Mounting the Inverter Additionally required mounting material not included in the scope of delivery At least two screws that are suitable for the support surface size at maximum O At least two washers that are suitable for the screws diameter 30 mm at maximum
4. Ensure that no lines are laid in the wall which could be damaged when drilling holes Operating Manual 5 20 25 11 19 5 Mounting SMA Solar Technology AG 2 Align the wall mounting bracket horizontally on the wall and use it to mark the position of the drill holes Use at least one hole on the righthand and left hand side in the wall mounting bracket 3 If the inverter is to be secured from being lifted off of the wall mounting bracket mark the position of the drill holes for the screw that attaches the inverter to the wall mounting bracket Observe the dimensions of the two anchoring points at the bottom of the inverter rear panel Set the wall mounting bracket aside and drill the marked holes Insert screw anchors into the drill holes if the support surface requires them Secure the wall mounting bracket horizontally using screws and washers Hook the inverter into the wall mounting bracket 8 If the inverter has been transported with a crane remove the eye bolts from the threads on the top of the inverter and reinsert the filler plugs 9 Remove all six screws from the lower enclosure lid using an Allen key AF 3 10 Flip the lower enclosure lid up and remove it 20 STP20 25TLBE en 1 1 Operating Manual SMA Solar Technology AG 5 Mounting 11 In order to secure the inverter from being lifted off the wall accidentally attach it to the wall with suitable mounting m
5. 61 kg Length x width x height of the packaging 780 mm x 380 mm x 790 mm Transport weight 68 kg 42 STP20 25TL BE en 1 1 Operating Manual SMA Solar Technology AG 10 Technical Data Climatic category in accordance with IEC 60721 3 4 Environmental category outdoors Pollution degree outside the enclosure 3 Pollution degree inside the enclosure 2 Operating temperature range 25 C to 60 C Maximum permissible value for relative humid 100 ity non condensing Maximum operating altitude above mean sea 3 000 m level MSL Typical noise emission 51 dB A Power loss in night mode 1W Topology transformerless Cooling method SMA OptiCool Degree of protection for electronics in accor IP65 dance with IEC 60529 Protection class in accordance with IEC 61140 Grid configurations TN C TN S TN C S TT when V lt 20 V National standards and approvals as per 10 2014 AS 4777 BDEW 2008 C10 11 2012 CE 0 16 CEI 0 21 DIN EN 62109 1 EN 50438 G59 3 IEC 61727 MEA IEC 61727 PEA IEC 62109 2 NEN EN 50438 NRS 097 2 1 PPC RD 661 2007 RD 1699 201 1 SI 4777 VDE AR N4105 VDE 0126 1 1 VFR 2014 UTE C15 712 1 BDEW 2008 in preparation EN 50438 Does not apply to all country standard deviations of EN 50438 IEC 62109 2 In order to meet the requirements of this standard the inverter must either be equipped with a multifunction relay used as a fault i
6. and is operated Training in how to deal with the dangers and risks associated with installing and using electrical devices and installations Training in the installation and commissioning of electrical devices and installations Knowledge of the applicable standards and directives Knowledge of and compliance with this document and all safety information 1 3 Additional Information Links to additional information can be found at www SMA Solar com Document title and content Document type Service Manual STP 20000TL 25000TL Service Manual Troubleshooting cleaning replacement of varistors and surge arresters type Il and decommissioning SMA Speedwire Webconnect data module Installation Manual Connection to the Speedwire Webconnect data module Webconnect Systems in Sunny Portal User Manual Registration in Sunny Portal and setting or changing operating parameters of the inverter Overview of the Rotary Switch Settings Technical Information Overview of the rotary switch settings for configuring the coun try data set and display language Efficiency and Derating Technical Information Efficiency and derating behavior of the Sunny Boy Sun ny Tripower and Sunny Mini Central inverters Criteria for Selecting a Residual Current Device Technical Information Operating Manual 5 20 25 11 5 1 Information on this Document Document title and content Circuit Breaker SMA So
7. factors influencing cable dimensioning are nominal AC current type of cable routing method cable bundling ambient temperature and maximum desired line losses for calculation of line losses see the design software Sunny Design from software version 2 0 at www SMA Solar com Load break switch and cable protection NOTICE Damage to the inverter due to the use of screw type fuses as load break switches Screw type fuses e g DIAZED fuse or NEOZED fuse are load break switches Do not use screw type fuses as load break switches Usea load break switch or circuit breaker as a load disconnection unit for information and design examples see the Technical Information Circuit Breaker at www SMA Solar com In PV systems with multiple inverters protect each inverter with a separate three phase circuit breaker Make sure to observe the maximum permissible fuse protection see Section 10 Technical Data page 41 This will prevent residual voltage being present at the corresponding cable after disconnection O Loads installed between the inverter and the circuit breaker must be fused separately Residual current monitoring unit If an external residual current device is required install a residual current device which trips at a residual current of 100 mA or higher for details on selecting a residual current device see the Technical Information Criteria for Selecting a Residual Current Device
8. inverters described in this document are in compliance with the fundamental requirements and other relevant provisions of the above mentioned directives The entire EC Declaration of Conformity can be found at www SMA Solar com Operating Manual 5 20 25 11 49 SMA Solar Technology
9. label uniquely identifies the inverter You will require the infor mation on the type label to use the product safely and when seeking cus tomer support from the SMA Service Line You will find the following in formation on the type label Device type Model Serial number Serial No Date of manvfacture Device specific characteristics Ventilation grid Recessed grip Operating Manual LEDs The LEDs indicate the operating state of the inverter see Section 4 2 LED Signals page 13 STP20 25TL BE en 1 1 11 4 Product Description SMA Solar Technology AG Position Designation F DC load break switch The inverter is equipped with a DC load break switch If the DC load break switch is set to the position I it establishes a conductive connection between the PV array and the inverter Setting the DC load break switch to the O position interrupts the DC electric circuit and completely discon nects the PV array from the inverter Disconnection takes place at all poles G Lower enclosure lid H Upper enclosure lid Symbols on the Inverter and on the Type Label Symbol Explanation Inverter Together with the green LED this symbol indicates the operating state of the inverter Observe the documentation Together with the red LED this symbol indicates an error for trou bleshooting see the service manual at www SMA Solar com Data transmission Danger This symbol indic
10. only operate the inverter with an external three phase decoupling protection Without external three phase decoupling protection the inverter will not disconnect from the utility grid when the country specific standard requirement is exceeded Operating Manual STP20 25TL BE en 1 1 31 7 Commissioning SMA Solar Technology AG Procedure Rotary switch positions This overview is only an extract at the time of printing You can find a current detailed list in the Technical Information Overview of the Rotary Switch Settings at www SMA Solar com Rotary switch A Rotary switch B Country data set 0 0 Default setting 1 VDEO126 1 1 VDE AR N4105 VDE AR N4105 HP VFR2014 54777 3 0 21 external RD1699 RD1663 661 A PPC G59 3 EN50438 NEN EN50438 C10 11 2012 Medium Voltage Directive Germany 514777 HS131 Pf MVtgDirective Internal IEC61727 MEA IEC61727 PEA Island mode 60 Hz 0 Island mode 50 Hz Setting in accordance with VDE AR N 4105 for PV systems 3 86 kVA Germany Setting in accordance with VDE AR N 4105 for PV systems 13 8 kVA Germany Setting in accordance with CEI 0 21 for PV systems with external grid and PV system protection gt 6 kW Italy gt 32 STP20 25TL BE en 1 1 Operating Manual SMA Solar Technology AG 7
11. with the requirements of the Ger man Equipment and Product Safety Act RCM Regulatory Compliance Mark The product complies with the requirements of the applicable Australian standards 4 2 LED Signals The LEDs indicate the operating state of the inverter Operating Manual STP20 25TL BE en 1 1 13 4 Product Description SMA Solar Technology AG LED Status Explanation Green LED glowing Feed in operation If an event occurs during feed in operation an event mes sage will be shown in the communication product for event messages see the service manual at www SMA So lar com flashing The conditions for feed in operation are not yet met As soon as the conditions are met the inverter will start feed in operation Red LED glowing Error An error has occurred The error must be rectified by a qualified person for troubleshooting see the service man ual at www SMA Solar com Blue LED No function 4 3 Interfaces and Functions The inverter can be equipped or retrofitted with the following interfaces and functions SMA Speedwire Webconnect The inverter is equipped with SMA Speedwire Webconnect as standard SMA Speedwire Webconnect is a type of communication based on the Ethernet standard This enables inverter optimized 10 100 Mbit data transmission between Speedwire devices in PV systems and the software Sunny Explorer The Webconnect function enables direct data transmission between the inverters
12. 2 and AC power gt 50 of the rated power Operating Manual STP20 25TLBE en 1 1 41 10 Technical Data SMA Solar Technology AG STP 20000TL 30 STP 25000TL 30 Rated power frequency 50 Hz 50 Hz AC power frequency 50 Hz 60 Hz 50 Hz 60 Hz Operating range at AC power fre 44 Hz to 55 Hz quency 50 Hz 54 Hz to 65 Hz 44 Hz to 55 Hz 54 Hz to 65 Hz Operating range at AC power fre quency 60 Hz Power factor at rated power 1 1 Displacement power factor adjustable O erected TO Ounderexcited Ooverexcited 0 underexcited Feed in phases 3 3 Connection phases 3 3 Overvoltage category in accordance with IEC 60664 1 depending on the configured country data set Efficiency STP 20000TL 30 STP 25000TL 30 Maximum efficiency Nmax 98 4 98 3 European efficiency ney 98 0 98 1 Protective Devices DC reverse polarity protection Short circuit diode Input side disconnection point DC load break switch DC overvoltage protection Thermally monitored varistors or surge arresters type II optional AC short circuit current capability Current control Grid monitoring SMA Grid Guard 3 Maximum permissible fuse protection 50A Ground fault monitoring Insulation monitoring R gt 250 All pole sensitive residual current monitoring unit Available General Data Width x height x depth 665 mm x 690 mm x 265 mm Weight
13. Commissioning Procedure 1 DANGER Danger to life due to high voltages Ensure that the inverter is disconnected from all voltage sources and that the enclosure lid is removed see Section 9 page 38 2 Set the rotary switches A and B to the required position using a flat blade screwdriver blade width 2 5 mm The inverter will adopt the setting after commissioning This can take up to five minutes 7 3 Commissioning the Inverter Requirements The inverter must be correctly mounted The circuit breaker must be correctly rated and mounted All cables must be correctly connected Unused DC inputs must be sealed using the corresponding DC connectors and sealing plugs The country data set must be set correctly for the country or the purpose 000000 Unused enclosure openings must be sealed tightly The factory mounted filler plugs can be used for that purpose Procedure 1 Make sure that the AC cable is routed in a such way that it cannot be damaged by the partition in the lower enclosure lid 2 Insert the lower enclosure lid from above and fold it down The screws must protrude from the lower enclosure lid Operating Manual STP20 25TL BE en 1 1 33 7 Commissioning SMA Solar Technology AG 3 Tighten all six screws with an Allen key AF 3 in the order 1 to 6 torque 2 0 Nm 0 3 Nm By tightening the screws in the prescribed order you avoid warping the enclosure lid which would keep it from sea
14. DC connectors for information on assembling DC connectors see the DC connector installation manual i Use of Y adapters for parallel connection of strings The Y adapters must not be used to interrupt the DC circuit e Do not use the Y adapters in the immediate vicinity of the inverter The adapters must not be visible or freely accessible n order to interrupt the DC circuit always disconnect the inverter as described in this document see Section 9 page 38 28 STP20 25TLBE en 1 1 Operating Manual SMA Solar Technology AG 6 Electrical Connection 6 4 2 Connecting the PV Array NOTICE Damage to the DC connectors due the use of contact cleaner of other cleaning agents Some contact cleaners or other cleaning agents may contain substances that decompose the plastic of the DC connectors Do not use contact cleaners or other cleaning agents for cleaning the DC connectors Procedure 1 Ensure that the circuit breaker is switched off from all three line conductors and that it cannot be reconnected 2 Ensure that there is no ground fault in the PV array see service manual at www SMA Solar com 3 Check whether the DC connectors have the correct polarity If the DC connector is equipped with a DC cable of the wrong polarity the DC connector must be configured again The DC cable must always have the same polarity as the DC connector 4 Ensure that the open circuit voltage of the PV array does
15. MA Solar Technology AG 6 2 2 Interior View A B WE ntum laa t t 213 N PE H L 8 s e e l I S H G F E Figure 7 Connection areas in the interior of the inverter Position Designation A DC protective cover B Pin connector for connecting the multifunction relay or the SMA Power Control Module Pin connector for connecting the communication interface for 5485 D Connecting terminal plate for connecting the AC cable Jumper slot for temporarily changing the display language to English for ser vice purposes F Screw to release and attach the communication board G Rotary switch A and B for setting the country data set and the display lan guage H Slot for the SD memory card for service purposes 6 3 AC Connection 6 3 1 Requirements for the AC Connection Cable requirements O External diameter 14 mm to 25 mm O Conductor cross section 6 mm to 16 mm 24 STP20 25TL BE en 1 1 Operating Manual SMA Solar Technology AG 6 Electrical Connection O Maximum conductor cross section with bootlace ferrule 10 mm Insulation stripping length 12 mm The cable must be dimensioned in accordance with the local and national directives for the dimensioning of cables The requirements for the minimum wire size derive from these directives Examples of
16. Manual STP20 25TL BE en 1 1 3 Table of Contents SMA Solar Technology AG 10 11 12 13 ANEEC O0 udi o MS 31 7 2 Configuring the Country Data Peces 31 7 3 Commissioning the Inverter sse 33 M 36 8 1 Configuration Procedure 36 8 2 Integrating the Inverter into the Network sss 36 8 3 Changing Operating Parameters sssee 37 8 4 Setting SMA OptiTrac Global Peak s 37 Disconnecting the Inverter from Voltage Sources 38 Inn m 41 eS LI Qr 45 je oo ince 46 EC Declaration of Conformity eese 49 STP20 25TL BE en 1 1 Operating Manual SMA Solar Technology AG 1 Information on this Document 1 Information on this Document 11 Validity This document is valid for the following device types e STP 20000 30 Sunny Tripower 20000TL e STP 25000TL 30 Sunny Tripower 25000TL 1 2 Target Group This document is intended for qualified persons and end users Only qualified persons are allowed to perform the activities marked in this document with a warning symbol and the caption Qualified person Tasks that do not require any particular qualification are not marked and can also be performed by end users Qualified persons must have the following skills Knowledge of how an inverter works
17. at www SMA Solar com Overvoltage category The inverter can be used in grids of installation category or lower in accordance with IEC 60664 1 That means that the inverter can be permanently connected to the grid connection point of a building In case of installations with long outdoor cabling routes additional measures to reduce overvoltage category IV to overvoltage category Ill are required see the Technical Information Overvoltage protection at www SMA Solar com i Safety in accordance with IEC 62109 The inverter is not equipped with a grounding conductor monitoring device In order to guarantee safety in accordance with IEC 62109 take one of the following measures Connect a grounding conductor made of copper wire with a cross section of at least 10 mm to the connecting terminal plate for the AC cable Connect additional grounding with the same cross section as the connected grounding conductor to the connecting terminal plate for the AC cable see Section 6 3 3 Connecting Additional Grounding page 27 This prevents touch current if the grounding conductor at the connecting terminal plate for the AC cable fails Operating Manual 5 20 25 11 25 6 Electrical Connection SMA Solar Technology AG i Connection of additional grounding In some countries additional grounding is generally required In each case observe the locally applicable regulations 6 3 2 QUALIFIE nnecting the Inverte
18. aterial Use both of the lower drill holes on the rear panel of the inverter 12 Ensure that the inverter is securely in place Operating Manual STP20 25TL BE en 1 1 21 6 Electrical Connection SMA Solar Technology AG 6 Electrical Connection 6 1 Safety during Electrical Connection DANGER Danger to life due to high voltages of the PV array When exposed to sunlight the PV array generates dangerous DC voltage which is present in the DC conductors and the live components of the inverter Touching the DC conductors or the live components can lead to lethal electric shocks If you disconnect the DC connectors from the inverter under load an electric arc may occur leading to electric shock and burns Do not touch uninsulated cable ends Do not touch the DC conductors Do not touch any live components of the inverter Have the inverter mounted installed and commissioned only by qualified persons with the appropriate skills e If an error occurs have it rectified by qualified persons only Prior to performing any work on the inverter disconnect it from all voltage sources as described in this document see Section 9 Disconnecting the Inverter from Voltage Sources page 38 NOTICE Damage to the seal of the enclosure lids in subfreezing conditions If you open the upper and lower enclosure lids in subfreezing conditions the seals on the enclosure lids can be damaged This can lead to moist
19. ates that the inverter must be additionally grounded if a second grounding conductor or equipotential bonding is required lo cally QR Code Links to additional information on the inverter can be found at www SMA Solar com Danger to life due to electric shock The product operates at high voltages All work on the product must be carried out by qualified persons only Risk of burns due to hot surfaces The product can get hot during operation Avoid contact during opera tion Allow the product to cool down sufficiently before carrying out any work 12 STP20 25TL BE en 1 1 Operating Manual SMA Solar Technology AG 4 Product Description Symbol Explanation Observe the documentation Observe all documentation supplied with the product DC Direct current The product does not have a transformer Three phase alternating current with neutral conductor WEEE designation Do not dispose of the product together with the household waste but in accordance with the locally applicable disposal regulations for electronic waste CE marking The product complies with the requirements of the applicable EU direc tives 65 Degree of protection IP65 The product is protected against dust intrusion and water jets from any angle a The product is suitable for outdoor installation DYE Certified safety The product is VDE tested and complies
20. ction Assist fo integrate the inverter into the network Requirements The inverter must in operation O There must be a router with Internet connection in the local network of the system L The inverter must be connected to the router Procedure Integrate the inverter into the network by means of the SMA Connection Assist Download the SMA Connection Assist and install it on the computer see www SMA Solar com 36 STP20 25TL BE en 1 1 Operating Manual SMA Solar Technology AG 8 Configuration 8 3 Changing Operating Parameters This section describes the basic procedure for changing operating parameters Always change operating parameters as described in this section Some parameters that have sensitive functions can only be viewed and changed by qualified persons for further information on changing parameters refer to the manual of the communication product The operating parameters of the inverter are set to certain values by default To optimize inverter operation you can change the operating parameters using a communication product Requirements Depending on the type of communication a computer with Ethernet interface must be available O A communication product corresponding to the type of communication used must be available The inverter must be registered in the communication product The changes to the grid relevant parameters must be approved by the responsible grid operator O When chan
21. ding cable insulation 2 Lead the clamping bracket over the grounding cable Arrange the grounding cable on the left hand side Operating Manual STP20 25TL BE en 1 1 27 6 Electrical Connection SMA Solar Technology AG 3 Screw the clamping bracket tight using the M x16 cylindrical screw and the conical spring washer torque 6 Nm The teeth of the conical spring washer must face the clamping bracket 6 4 Connection 6 4 1 Requirements for the DC Connection Requirements for the PV modules per input L1 All PV modules must be of the same type All PV modules must be aligned and tilted identically O On the coldest day based on statistical records the open circuit voltage of the PV array must never exceed the maximum input voltage of the inverter The same number of series connected PV modules must be connected to each string The maximum input current per string must be maintained and must not exceed the through fault current of the DC connectors see Section 10 Technical Data page 41 The thresholds for the input voltage and the input current of the inverter must be adhered to see Section 10 Technical Data page 41 The positive connection cables of the PV modules must be fitted with the positive DC connectors for information on assembling DC connectors see the DC connector installation manual O The negative connection cables of the PV modules must be fitted with the negative
22. e cover 3 5 Nm Screw for additional grounding 5 8 Nm SUNCLIX swivel nut 2Nm Data Storage Capacity Daily energy yields 63 days Daily yields 30 years Event messages for users 250 events Event messages for installers 250 events 44 STP20 25TL BE en 1 1 Operating Manual SMA Solar Technology AG 11 Accessories 11 Accessories You will find the accessories for your product in the following overview If required these can be ordered from SMA Solar Technology AG or your distributor Designation Short description SMA order number RS485 data module RS458 interface as retrofit kit DM 485CB 10 SMA Power Control Module Multifunction interface for implementing PWCMOD 10 grid management systems for one inverter Multifunction Relay Multifunction relay as retrofit kit 01 10 Type Il surge arrester Type Il surge arrester for input and input DC_SPD_KIT3 10 B Operating Manual STP20 25TL BE en 1 1 45 12 Contact SMA Solar Technology AG 12 Contact If you have technical problems with our products contact the SMA Service Line We need the following information in order to provide you with the necessary assistance Inverter device type Inverter serial number Inverter firmware version Special country specific settings of the inverter if applicable Type and quantity of PV modules connected Mounting location and altitude of the inverter Inverter message Optional equipment e g communication products O
23. e has formed on the seal of the lid in subfreezing conditions remove it prior to opening the enclosure lids of the inverter e g by melting the ice with warm air Observe the applicable safety regulations Operating Manual STP20 25TL BE en 1 1 9 3 Scope of Delivery SMA Solar Technology AG 3 Scope of Delivery Check the scope of delivery for completeness and any externally visible damage Contact your distributor if the scope of delivery is incomplete or damaged A B e e B we E F G H K Figure 1 Components included in the scope of delivery Position Quantity Designation A 1 Inverter B 1 DC load break switch 1 Wall mounting bracket D 1 Operating manual supplementary sheet with default set tings installation manual of the DC connector E 6 Negative DC connector F 6 Positive DC connector G 6 Sealing plug H 1 Clamping bracket 1 Cylindrical screw x 16 K 1 Conical spring washer M6 10 STP20 25TL BE en 1 1 Operating Manual SMA Solar Technology AG 4 Product Description 4 Product Description 4 1 SunnyTripower The Sunny Tripower is a transformerless PV inverter with two MPP trackers which converts the direct current of the PV array to grid compliant three phase current and feeds it into the utility grid Figure 2 Design of the Sunny Tripower Position A Designation Thread for screwing in two eye bolts for transport B Type label The type
24. ging grid relevant parameters SMA Grid Guard code must be available see the Certificate Order Form for the SMA Grid Guard Code at www SMA Solar com Procedure 1 Call up the user interface of the communication product or software and log in as Installer or User 2 If required enter the SMA Grid Guard code 3 Select and set the required parameter 4 Save settings 8 4 Setting SMA OptiTrac Global Peak For partially shaded PV modules you should set the interval at which the inverter is to optimize the MPP of the PV system The basic procedure for changing operating parameters is explained in another section see Section 8 3 Changing Operating Parameters page 37 Procedure Select the parameter Cycle time of the OptiTrac Global Peak algorithm or MPPShdw CycTms and set the required time interval The ideal time interval is usually six minutes This value should only be increased if the shading situation changes extremely slowly The inverter optimizes the MPP of the PV system at the predetermined time interval Operating Manual STP20 25TL BE en 1 1 37 9 Disconnecting the Inverter from Voltage Sources SMA Solar Technology AG 9 Disconnecting the Inverter from Voltage Sources A QUALIFIED PERSON Prior to performing any work on the inverter always disconnect it from all voltage sources as described in this section Always adhere to the prescribed sequence NOTICE Damage to the seal of the enclosure lids i
25. guration 8 1 Configuration Procedure Once you have commissioned the inverter you may have to adjust various settings via the rotary switches in the inverter or via a communication product This section describes the procedure for configuration and gives an overview of the steps you must perform in the prescribed order Procedure See 1 In order to use the Webconnect function integrate the in Section 8 2 page 36 verter into the network 2 To manage the PV system data or to set the inverter pa Manual of the communica rameters capture the inverter in a communication product tion product at www SMA Solar com 3 In order to receive control commands of the grid operator Manual of the SMA Speed via SMA Speedwire Webconnect for PV systems in Italy wire Webconnect data set the parameters module 4 Change the PV system time and PV system password Manual of the communica tion product at www SMA Solar com 5 For partially shaded PV modules and depending on Section 8 4 page 37 given shading situation you should set the interval at which the inverter optimizes the MPP of the PV system 8 2 Integrating the Inverter into the Network If the router supports DHCP and DHCP is enabled the inverter will automatically be integrated into the network You will not need to carry out network configuration If the router does not support DHCP automatic network configuration will not be possible and you will need to use SMA Conne
26. he inverter under load an electric arc may occur leading fo electric shock and burns Do not touch uninsulated cable ends Do not touch the DC conductors Do not touch any live components of the inverter Have the inverter mounted installed and commissioned only by qualified persons with the appropriate skills e If an error occurs have it rectified by qualified persons only e Prior to performing any work on the inverter disconnect it from all voltage sources as described in this document see Section 9 Disconnecting the Inverter from Voltage Sources page 38 DANGER Danger to life due to electric shock Touching an ungrounded PV module or array frame can cause a fatal electric shock Connect and ground the PV modules array frame and electrically conductive surfaces so that there is continuous conduction Observe the applicable local regulations CAUTION Risk of burns due to hot enclosure parts Some parts of the enclosure can get hot during operation Do not touch any parts other than the lower enclosure lid of the inverter during operation NOTICE Damage to the seal of the enclosure lids in subfreezing conditions If you open the upper and lower enclosure lids in subfreezing conditions the seals on the enclosure lids can be damaged This can lead to moisture entering the inverter Do not open the inverter at ambient temperatures lower than 5 C e layer of ic
27. he Belgien Luxembourg Voir Belgique Magyarorsz g l sd esko Csehorsz g Nederland zie Belgien Belgi sterreich Siehe Deutschland Per Ver Espa a Polska Patrz esko Czechy Portugal SMA Solar Technology Portugal Gratuito em Portugal 800 20 89 87 Unipessoal Lda Internacional 351 212377860 Lisboa Rom nia Vezi esko Cehia Schweiz Siehe Deutschland Slovensko pozri esko esk republika South Africa SMA Solar Technology South Africa 08600 SUNNY 08600 78669 Pty Ltd International 27 12 643 1785 Centurion Pretoria United King SMA Solar UK 44 1908 304899 dom Milton Keynes SMA Hellas AE 801 222 9 222 International 30 212 222 9 222 Operating Manual STP20 25TL BE en 1 1 47 12 Contact SMA Solar Technology AG Ine SMA Solar Thailand Co Ltd 66 2 670 6999 SMA Technology Korea Co ltd 82 2 520 2666 Me 97 2 234 6177 SMA Middle East LLC e ob E Bas all pall Other countries International SMA Service Line Toll free worldwide 00800 SMA SERVICE 800 762 7378423 48 STP20 25TL BE en 1 1 Operating Manual SMA Solar Technology AG 13 EC Declaration of Conformity 13 EC Declaration of Conformity within the meaning of the EC directives e 2004 108 EG Electromagnetic compatibility e 2006 95 EG Low voltage directive SMA Solar Technology AG confirms herewith that the
28. hut The locking levers close by snapping down fast and hard Press the locking levers of the connecting terminal plate for the AC cable down with your thumb only Do not grip the entire connecting terminal plate for the AC cable Do not place your fingers under the locking levers 12 Connect PE N L1 L2 and L3 according to the labeling to the connecting terminal plate for the AC cable and push the safety levers down The direction of the rotating magnetic field of L1 L2 and 13 is not relevant 13 Make sure that all conductors are securely in place 14 Tighten the swivel nut of the cable gland 6 3 3 Connecting Additional Grounding If additional grounding or equipotential bonding is required locally you can connect additional grounding to the inverter This prevents touch current if the grounding conductor at the connecting terminal plate for the AC cable fails The required clamping bracket the screw and the conical spring washer are part of the scope of delivery of the inverter Cable requirement i Use of fine stranded conductors You can use an inflexible or a flexible fine stranded conductor e When using a fine stranded conductor it has to be double crimped by a ring terminal lug Make sure that no insulated conductor is visible when pulling or bending This will ensure sufficient strain relief by means of the ring terminal lug L1 Grounding cable cross section max 16 mm Procedure 1 Strip the groun
29. lar Technology AG Document type Technical Information Dimensioning and selection of a suitable AC circuit breaker for inverters under PV specific influences Insulation Resistance Riso of Non Galvanically Isolated PV Technical Information Systems Calculating the insulation resistance for troubleshooting Shade Management Technical Information Efficient operation of partly shaded PV systems with Op tiTrac Global Peak Leading Leakage Currents Technical Information Information on the design of transformerless inverters Firmware Update with SD Card Technical Description Parameter List Technical Information Overview of all inverter operating parameters and their config uration options 1 4 Symbols Symbol Explanation Indicates a hazardous situation which if not avoided will result in death or serious injury A WARNING Indicates a hazardous situation which if not avoided can result in death or serious injury CAUTION Indicates a hazardous situation which if not avoided can result in minor or moderate injury NOTICE Indicates a situation which if not avoided can re sult in property damage A QUALIFIED PERSON Sections describing activities to be performed by qualified persons only ij Information that is important for a specific topic or goal but is not safety relevant Indicates a requirement for meeti
30. lectrostatic discharge Touching electronic components can cause damage to or destroy the inverter through electrostatic discharge Ground yourself before touching any component STP20 25TLBE en 1 1 Operating Manual SMA Solar Technology AG 10 Technical Data DC Input 10 Technical Data STP 20000TL 30 STP 25000TL 30 Maximum DC power at cos 1 20 440 W 25 550 W Maximum input voltage 1 000 V 1 000 V MPP voltage range 320 V to 800 V 390 V to 800 V Rated input voltage 600 V 600 V Minimum input voltage 150 V 150 V Initial input voltage 188 V 188 Maximum input current input 33A 33A Maximum input current input B 33A 33A Maximum short circuit current per 43A string Number of independent MPP inputs 2 2 Strings per MPP input 3 3 Overvoltage category in accordance I I with IEC 60664 1 n accordance with IEC 62109 2 ISC PV AC Output STP 20000TL 30 STP 25000TL 30 Rated power at 230 V 50 Hz 20 000 W 25 000W Maximum apparent AC power 20 000 VA 25 000 VA Rated grid voltage 230 230 Nominal voltage 220 V 230V 240 V 220 V 230 V 240 V AC voltage range 180 V to 280 V 180 V to 280 V Nominal AC current at 29A 36 2 220 V 230 V 240 V Maximum output current 29 36 2 Maximum output current under fault 50A 50A conditions Total harmonic distortion of the output lt 3 lt 3 current with total harmonic distortion of the AC voltage lt
31. ling correctly Useful hint If the screws fall out of the lower enclosure lid insert the long screw into the lower middle hole and the five short screws into the other holes 4 Set the DC load break switch to the position so that both mounting screws are visible 5 Insert the DC load break switch firmly into the recess on the inverter During this process the DC load break switch must still be in the position O and aligned so that the screws are positioned over the threads 6 Fasten the two screws using an Allen key AF 3 torque 2 Nm 0 2 Nm 7 Turn the DC load break switch to the position 34 STP20 25TLBE en 1 1 Operating Manual SMA Solar Technology AG 7 Commissioning Switch on the circuit breaker of all three line conductors All three LEDs start to glow and the startup phase begins The start up phase may take several minutes 8 The green LED glowing Feed in operation begins X The green LED is flashing Possible cause of error the DC input voltage is still too low or the inverter is monitoring the utility grid Once the DC input voltage is sufficiently high and the grid connection conditions are met the inverter will start operation X The red LED is glowing and an error message and event number appear in the display Rectify the error see the service manual at www SMA Solar com Operating Manual 5 20 25 11 35 8 Configuration SMA Solar Technology AG 8 Confi
32. mounting location must be inaccessible to children A solid support surface must be available for mounting e g concrete or masonry When mounted on drywall or similar materials the inverter emits audible vibrations during operation which could be perceived as annoying The mounting location must be suitable for the weight and dimensions of the inverter see Section 10 Technical Data page 41 To ensure optimum operation the ambient temperature should be between 25 C and 40 The mounting location should not be exposed to direct solar irradiation Direct solar irradiation can cause the inverter to overheat As a result the inverter reduces its power output Climatic conditions must be met see Section 10 Technical Data page 41 The mounting location should be freely and safely accessible at all times without the need for any auxiliary equipment such as scaffolding or lifting platforms Non ulfillment of these criteria may restrict servicing 16 STP20 25TLBE en 1 1 Operating Manual SMA Solar Technology AG 5 Mounting Dimensions for mounting 5 638 fg 432 mm gt 216 216 mmm 20 11 E f 5 T e ores i N 792 11 mm 104 6 110 mm a 86 mm 130 130 mm 86 iS o M 3 M
33. n key AF 3 9 Lift and remove the lower enclosure lid from below 10 A CAUTION Risk of burns when touching the DC protective cover The DC protective cover can get hot during operation Do not touch the DC protective cover Operating Manual STP20 25TL BE en 1 1 39 9 Disconnecting the Inverter from Voltage Sources SMA Solar Technology AG 11 12 13 40 Release and remove all DC connectors Insert a slotted screwdriver or an angled screwdriver blade width 3 5 into one of the slide slots and pull the DC connectors out downwards Do not pull on the cable Use an appropriate measuring device to ensure that no voltage is present at the AC connecting terminal plate between L1 and N L2 and N and L3 and N Insert the test probe of the multimeter into the round opening of the terminal Use an appropriate measuring device to ensure that no voltage is present at the AC connecting terminal plate between L1 and PE L2 and PE and L3 and PE Insert the test probe into the round opening of each terminal Ensure that no voltage is present between any terminal of the multifunction relay and PE of the AC connecting terminal plate DANGER Danger to life due to high voltages in the inverter The capacitors in the inverter take 20 minutes to discharge Wait 20 minutes before opening the upper enclosure lid e Do not open the DC protective cover NOTICE Damage to the inverter due to e
34. n subfreezing conditions If you open the upper and lower enclosure lids in subfreezing conditions the seals on the enclosure lids can be damaged This can lead to moisture entering the inverter Do not open the inverter at ambient temperatures lower than 5 C layer of ice has formed on the seal of the lid in subfreezing conditions remove it prior to opening the enclosure lids of the inverter e g by melting the ice with warm air Observe the applicable safety regulations NOTICE Destruction of the measuring device due to overvoltage Only use measuring devices with a DC input voltage range of 1 000 V or higher Procedure 1 Disconnect the circuit breaker from all three line conductors and secure it against reconnection 2 Turn the DC load break switch to the position O 3 If the multifunction relay is used switch off any supply voltage to the load 4 Wait until the LEDs have gone out and if necessary the load connected to the multifunction relay has been switched off 5 Use a current clamp to ensure that no current is present in the DC cables 38 STP20 25TL BE en 1 1 Operating Manual SMA Solar Technology AG 9 Disconnecting the Inverter from Voltage Sources 6 Unscrew the two screws on the DC load break switch using an Allen key AF 3 7 Pull the DC load break switch down and out of the recess 8 Remove all six screws from the lower enclosure lid using an Alle
35. ndicator contact or there must be a connection to Sunny Portal with the fault alarm in Sunny Portal activated NRS 97 1 2 This standard requires a separate label attached to the AC distribution board which indicates the AC side disconnection of the inverter in case of a grid failure for further details see NRS 97 1 2 Sect 4 2 7 1 and 4 2 7 2 RD 1699 and RD 661 2007 Contact the SMA Service Line for restrictions in specific regions Climatic Conditions Installation in accordance with IEC 60721 3 4 Class 4K4H Extended temperature range 25 C to 60 C Operating Manual STP20 25TL BE en 1 1 43 10 Technical Data SMA Solar Technology AG Extended humidity range 0 to 100 Threshold for relative humidity non condensing 10076 Extended air pressure range 79 5 kPa to 106 kPa Transport in accordance with IEC 6072 1 3 4 Class 2K3 Temperature range 25 C to 70 C Features DC Connection SUNCLIX DC connector AC connection Spring cage terminal Speedwire Webconnect data module As standard RS485 galvanically isolated Optional Multifunction Relay Optional SMA Power Control Module Optional Surge arrester type II Optional Fans Width x height x depth 60 mm x 60 mm x 25 4 mm Noise emission typical lt 29 dB A Maximum operating altitude 3 000 m Air flow rate 2 40 m3 h Torques Upper lid screws 6 Nm 0 3 Nm Screws lower lid 2 Nm 0 3 Nm Screws for DC protectiv
36. ng a specific goal Desired result A problem that might occur 6 STP20 25TL BE en 1 1 Operating Manual SMA Solar Technology AG 1 Information on this Document 1 5 Nomenclature Complete designation Designation in this document Sunny Tripower Inverter product Operating Manual 5 20 25 11 7 2 Safety SMA Solar Technology AG 2 Safety 2 1 Intended Use The Sunny Tripower is a transformerless PV inverter with two MPP trackers which converts the direct current of the PV array to grid compliant three phase current and feeds it into the utility grid The product is suitable for indoor and outdoor use The product must only be operated with PV arrays of protection class Il in accordance with IEC 61730 application class A The PV modules must be compatible with this product PV modules with a high capacity to ground must only be used if their coupling capacity does not exceed 3 5 pF for information on how to calculate the coupling capacity see the Technical Information Leading Leakage Currents at www SMA Solar com All components must remain within their permitted operating ranges at all times The product must only be used in countries for which it is approved or released by SMA Solar Technology AG and the grid operator Use this product only in accordance with the information provided in the enclosed documentation and with the locally applicable standards and directives Any other applica
37. not exceed the maximum input voltage of the inverter 5 Connect the assembled DC connectors to the inverter The DC connectors snap audibly into place Operating Manual STP20 25TL BE en 1 1 29 6 Electrical Connection SMA Solar Technology AG NOTICE Damage to the inverter due to moisture ingress The inverter is only properly sealed when all unused DC inputs are closed with DC connectors and sealing plugs Do not insert the sealing plugs directly into the DC inputs on the inverter Insert the sealing plug into the DC connector y a For unused DC connectors push down the clamping bracket and push the swivel nut up to the thread Tighten the DC connector torque 2 Nm Insert the DC connectors with sealing plugs into the corresponding DC inputs on the inverter The DC connectors snap audibly into place 7 Ensure that all DC connectors are securely in place 30 STP20 25TL BE en 1 1 Operating Manual SMA Solar Technology AG 7 Commissioning 7 Commissioning 7 1 Commissioning Procedure Before you can commission the inverter you must check various settings and make changes if necessary This section describes the procedure and gives an overview of the steps which must always be performed in the prescribed sequence Procedure See 1 Connection to the SMA Speedwire Webconnect data Installation manual of the module SMA Speedwire W ebcon nect data module 2 Check which co
38. ntrol Module can be retrofitted Multifunction Relay You can configure the multifunction relay for various operating modes The multifunction relay is used for example to switch fault indicators on or off for information on installation and configuration see the installation manual of the multifunction relay The multifunction relay can be retrofitted SMA OptiTrac Global Peak SMA OptiTrac Global Peak is an advancement of SMA OptiTrac and allows the operating point of the inverter to follow the MPP precisely at all times In addition with the aid of SMA OptiTrac Global Peak the inverter can detect the presence of several maximum power points in the available operating range such as may occur particularly with partially shaded strings SMA OptiTrac Global Peak is enabled by default Surge Arrester Type ll The surge arresters monitor the PV modules and limit dangerous overvoltages Surge arresters of type Il can be retrofitted Operating Manual 5 20 25 11 15 5 Mounting SMA Solar Technology AG 5 Mounting 5 1 Requirements for Mounting Requirements for the mounting location WARNING Danger to life due to fire or explosion Despite careful construction electrical devices can cause fires Do not mount the inverter in areas containing highly flammable materials or gases Do not mount the inverter in a potentially explosive atmosphere Do not mount the inverter on a pillar The
39. of a small scale system and the Internet portal Sunny Portal without any additional communication device and for a maximum of four inverters per Sunny Portal system In large scale PV power plants data transmission to the Internet portal Sunny Portal is carried out via the SMA Cluster Controller You can access your Sunny Portal system from any computer with an Internet connection SMA Speedwire Webconnect enables for PV systems operated in Italy the connection to or disconnection of the inverter from the utility grid and definition of the frequency limits to be used with IEC61850 GOOSE messages RS485 interface The inverter can communicate via cables with special SMA communication products via the 485 interface information on supported SMA products at www SMA Solar com The R 485 interface can be retrofitted Grid Management Services The inverter is equipped with service functions for grid management Depending on the requirements of the grid operator you can activate and configure the functions e g active power limitation via operating parameters 14 STP20 25TLBE en 1 1 Operating Manual SMA Solar Technology AG 4 Product Description SMA Power Control Module The SMA Power Control Module enables the inverter to implement grid management services and is equipped with an additional multifunction relay for information on installation and configuration see the installation manual of the SMA Power Control Module The SMA Power Co
40. perating mode of the multifunction relay if present Australia SMA Australia Pty Ltd Toll free for Australia 1800 SMA AUS Sydney 1800 762 287 International 61 2 9491 4200 Belgien Bel SMA Benelux BVBA SPRL 32 15 286 730 gique Belgi Mecheln Brasil Vide Espanha Cesko SMA Central amp Eastern Europe s r o 420 235 010 417 Praha Chile Ver Danmark Se Deutschland Tyskland Deutschland SMA Solar Technology AG Medium Power Solutions Niestetal Wechselrichter 49 561 9522 1499 Kommunikation 49 561 9522 2499 SMA Online Service Center www SMA de Service Hybrid Energy Solutions Sunny Island 49 561 9522 399 PV Diesel Hybridsysteme 49 561 9522 3199 Power Plant Solutions Sunny Central 49 561 9522 299 SMA Ib rica Tecnolog a Solar Llamada gratuita en S LU 900 14 22 22 Barcelona Internacional 34 902 14 24 24 46 STP20 25TL BE en 1 1 Operating Manual SMA Solar Technology AG 12 Contact France SMA France S A S Medium Power Solutions Lyon Onduleurs 33 472 09 04 40 Communication 33 472 09 04 41 Hybrid Energy Solutions Sunny Island 33 472 09 04 42 Power Plant Solutions Sunny Central 33 472 09 04 43 India SMA Solar India Pvt Ltd 91 22 61713888 Mumbai Italia SMA Italia S r l 39 02 8934 7299 Milano Kurtpoc Kibris BA rre Bkz Yunanistan luxemburg Sie
41. r to the Utility Grid The connection requirements of the grid operator must be met The grid voltage must be in the permissible range The exact operating range of the inverter is specified in the operating parameters Procedure 1 Disconnect the circuit breaker from all three line conductors and secure against reconnection 2 If the lower enclosure lid is mounted loosen all screws of the lower enclosure lid using an Allen key AF 3 and lift the enclosure lid from below and remove it 3 Remove the adhesive tape from the enclosure opening for the AC cable 4 Insert the cable gland from the outside into the enclosure opening and tighten it from the inside with the counter nut 5 Route the AC cable into the inverter through the cable gland If necessary slightly loosen the swivel nut of the cable gland Remove the sheath from the AC cable Shorten L1 L2 L3 and N by 5 mm each Strip off the insulation of L1 L2 L3 and PE by 12 mm Push the safety levers of the AC connecting terminal plate right up to the stop A CAUTION Risk of fire if two conductors are connected to one terminal DONO If you connect two conductors to a terminal a fire can occur due to a bad electrical connection Never connect more than one conductor per terminal 26 STP20 25TL BE en 1 1 Operating Manual SMA Solar Technology AG 6 Electrical Connection 11 CAUTION Danger of crushing when locking levers snap s
42. reserved 2 STP20 25TL BE en 1 1 Operating Manual SMA Solar Technology AG Table of Contents Table of Contents 1 7 Information on this Document eere 5 Rm m 5 1 2 Torget Groups tenait 5 1 23 Additional 5 ME 6 1 5 7 8 A 05 10 rr 8 22 Satety ROREM NES 8 Scope of 10 Product 11 Suniy TH DOW CM OTHER 11 13 Z3 Interfaces FUNCNONS 14 IM OUTING 16 5 1 Requirements for Mounting ecce 16 54 Mounting the 18 Electrical e teg nq Ts UE 22 Safety during Electrical Connection 22 6 2 Overview of the Connection Area sse 23 6 2 1 View from Below 23 O 2 2 interior VIeW Seueri bebe teh aves 24 63 AC Conneclion e d eee 24 6 3 1 Requirements the AC Connection sss 24 6 3 2 Connecting the Inverter to the Utility 26 6 3 3 Connecting Additional Grounding sss 27 6 4 01 0 00 eene 28 6 4 1 Requirements for the DC Connection sss 28 6 4 2 Connecting the PV Array sss 29 Iii 31 Operating
43. tion may cause personal injury or property damage Alterations to the product e g changes or modifications are only permitted with the express written permission of SMA Solar Technology AG Unauthorized alterations will void guarantee and warranty claims and usually void the operation permit SMA Solar Technology AG shall not be held liable for any damage caused by such changes Any use of the product other than that described in the Intended Use section does not qualify as appropriate The enclosed documentation is an integral part of this product Keep the documentation in a convenient place for future reference and observe all instructions contained therein The type label must remain permanently attached to the product 2 2 Safety Information This section contains safety information that must be observed at all times when working on or with the product To prevent personal injury and property damage and to ensure long term operation of the product read this section carefully and observe all safety information at all times 8 STP20 25TL BE en 1 1 Operating Manual SMA Solar Technology AG 2 Safety A DANGER Danger to life due to high voltages of the PV array When exposed to sunlight the PV array generates dangerous DC voltage which is present in the DC conductors and the live components of the inverter Touching the DC conductors or the live components can lead to lethal electric shocks If you disconnect the DC connectors from t
44. untry data set the inverter is set to Supplementary sheet with the default settings type label or display 3 If the country data set is not set correctly for your country Section 7 2 page 31 or your purpose adjust to the required country data set 4 Commission the inverter Section 7 3 page 33 7 2 Configuring the Country Data Set i The country data set must be set correctly If you select a country data set which is not valid for your country and purpose it can cause a disturbance in the PV system and lead to problems with the grid operator When selecting the country data set you must always observe the locally applicable standards and directives as well as the properties of the PV system e g PV system size grid connection point f you are not sure which country data set is valid for your country or purpose contact your grid operator for information on which country data set is to be configured i Country data set for operation with external decoupling protection When operating the PV system with external decoupling protection the inverter has the additional country data set Medium Voltage Directive Germany or MVtgDirective This country data set allows you to extend the operating range of the inverter for voltage and frequency This country data set should only be selected if the PV system is disconnected via external decoupling If the country data set for operation is set with external decoupling protection
45. ure entering the inverter Do not open the inverter at ambient temperatures lower than 5 C Ifa layer of ice has formed on the seal of the lid in subfreezing conditions remove it prior to opening the enclosure lids of the inverter e g by melting the ice with warm air Observe the applicable safety regulations NOTICE Damage to the inverter due to electrostatic discharge Touching electronic components can cause damage to or destroy the inverter through electrostatic discharge Ground yourself before touching any component 22 STP20 25TL BE en 1 1 Operating Manual SMA Solar Technology AG 6 Electrical Connection 6 2 Overview of the Connection Area 6 2 1 View from Below A B C D E HRH Figure 6 Enclosure openings at the bottom of the inverter Ber Position Designation A DC load break switch B Enclosure opening M20 with filler plug for the connection cable of the multi function relay or SMA Power Control Module Enclosure opening M32 with filler plug for the data cables or network cables Enclosure opening M20 with filler plug for the data cables or network cables Enclosure opening for the AC connection Positive and negative DC connectors input B Positive and negative DC connectors input Operating Manual 5 20 25 11 23 6 Electrical Connection S
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