Technical Information SMA STRING-MONITOR SSM-U-XX10 / SSM-U-XX15

Technical Information SMA STRING-MONITOR SSM-U-XX10 / SSM-U-XX15 SSMUXX1015-TI-en-10 Version 1.0 ENGLISH

1 Overview of Product Details SMA Solar Technology AG 1 Overview of Product Details Product Description The SMA String-Monitor is a PV array junction box for outdoor areas to which several strings can be connected in parallel. The SMA String-Monitor collects, measures and monitors the input currents of the strings, assists in detecting failures, thus helping to minimize power and yield losses. The measured values are transmitted from the SMA String-Monitor via Ethernet to the next SMA String-Monitor in the communication bus up to the inverter. Distances of up to 100 m between the nodes are possible when using copper cables. Greater distances of up to 2,000 m between two nodes are possible via optical fibers (see Section 8, page 24). The number of SMA String-Monitors connectable to an inverter depends on the DC inputs of the inverter. One SMA String-Monitor per DC input can be connected to the inverter. Up to ten SMA String-Monitors can be connected in line topology to each string monitoring communication terminal of the inverter (for information on the number of string monitoring communication terminals, see the inverter manual). The SMA String-Monitor is equipped with a DC load-break switch. The DC load-break switch can disconnect the PV array connected to the SMA String-Monitor from the inverter. The SMA String-Monitor may only be operated if the strings are protected with fuses. SMA Solar Technology AG guarantees the safe operation of the SMA String-Monitors in combination with inline fuse connectors as string fuses and when the inline fuse connectors are connected directly to the DC connectors of the string cables of the SMA String-Monitor. Using a different type and location of fuses for the strings does not guarantee the safe operation of the SMA String-Monitor and the observance of the thresholds by SMA Solar Technology AG. The inline fuse connectors are available as an accessory (see Section 8, page 24). There are six SMA String-Monitor models available depending on the system voltage and on the number of PV inputs to be monitored: The SSM-U-XX10 is suitable for voltages of up to 1,000 V DC and is available with XX = 16, 24 or 32 PV inputs. The SSM-U-XX15 is suitable for voltages of up to 1,500 V DC and is available with XX= 16, 24 or 32 PV inputs. Equipment and Equipment Options Depending on the product option, the SMA String-Monitor is equipped with 16, 24 or 32 measuring channels. Different numbers of string inputs and string fuses can be assigned to the measuring channels. This allows you to achieve the optimum design for your PV system and to protect the PV array from reverse currents. The interior of the SMA String-Monitor is equipped with protective covers for the lower DC input area and for the upper DC output area. This facilitates working on the disconnected lower DC input area in the SMA String- Monitor without having to disconnect the DC output area from voltage sources on the inverter side. The string fuses are attached on the outside of the enclosure of the SMA String-Monitor. This prevents additional heat in the enclosure caused by the waste heat of the string fuses. Inline fuse connectors of the SUNCLIX plug-in system by Phoenix Contact with internal gpv fuse are available as an accessory. The inline fuse connectors are connected to the pre-installed DC connectors of the string cables of the SMA String-Monitor. The inline fuse connectors can be connected to the positive and/or negative terminal of the PV inputs and are available in different electrical current strengths. The SMA String Monitor is equipped with a type II overvoltage protection. This protects the inverter against overvoltage. The SMA String-Monitor can be additionally equipped with a type II overvoltage protection for the communication connection and for the 230 V AC voltage supply of the SMA String-Monitor. 2 SSMUXX1015-TI-en-10 Technical Information

SMA Solar Technology AG 1 Overview of Product Details The SMA String-Monitor is equipped with a double-bit key for the switch cabinet. Profile half-cylinders are available upon request from the manufacturer of the SMA String-Monitor enclosure. DC connection: You can connect up to two DC main cables per terminal by default. You can connect DC main cables from 70 mm 2 to 400 mm 2 made of aluminum or copper to the busbar in the SMA String-Monitor by means of terminal lugs. Only tin-plated copper tube terminal lugs for copper cables or bimetal tube terminal lugs for aluminum cables are permitted. You can connect DC main cables from 70 mm 2 to 300 mm 2 made of aluminum or copper to the V-box terminals in the SMA String-Monitor. The V-box terminals are available as an accessory. For connecting the tube terminal lugs or the V-box terminals, the required material for the bolted connection is pre-mounted on the busbars. DC load-break switch: The DC load-break switch is equipped with a viewing window for the contacts. To receive feedback on the switching state of the DC load-break switch, an alarm contact is available as an accessory (see Section 8, page 24). Technical Information SSMUXX1015-TI-en-10 3

2 Product Description SMA Solar Technology AG 2 Product Description 2.1 Circuitry Options with Inline String Fuses The string fuses for the SMA String-Monitor are integrated as so-called "inline string fuses" on the outside of the enclosure in the string connection. The string terminals of the SMA String-Monitor are equipped with DC connectors from the SUNCLIX product range of Phoenix Contact. Suitable for the SUNCLIX plug-in system, inline fuse connectors (see Section 2.2, page 6) and Y adapters are available from SMA Solar Technology AG as accessories (see Section 8, page 24). The string terminals are located outside of the enclosure of the SMA String-Monitor. This offers several options for the circuitry and fuse protection of the strings. One-Sided Fuse Protection with Inline Fuse Connector on the Positive or Negative Terminal Figure 1: One-sided fuse protection with inline fuse connector on the positive terminal (example) Two-Sided Fuse Protection with Inline Fuse Connector on the Positive or Negative Terminal Figure 2: Two-sided fuse protection with inline fuse connector on the positive or negative terminal (example) Two Strings on One Fuse via Y Adapter Figure 3: Two strings on one fuse via Y adapter (example) 4 SSMUXX1015-TI-en-10 Technical Information

SMA Solar Technology AG 2 Product Description Two Fuses on One String via Y Adapter Figure 4: Two fuses on one string via Y adapter (example) Connection of Pre-Fabricated Cable Harnesses with Integrated String Fuse Figure 5: Connection of pre-fabricated cable harnesses with integrated string fuse (example) Position A B C D E F G Designation PV module DC connector (positive terminal) Inline fuse connector DC connector (negative terminal) Y adapter Integrated string fuse SMA String-Monitor Technical Information SSMUXX1015-TI-en-10 5

2 Product Description SMA Solar Technology AG 2.2 Inline Fuse Connector as Inline String Fuse The DC connectors and the inline fuse connectors are from the SUNCLIX plug-in system by Phoenix Contact and can be installed by easily plugging them together. For further information on this subject, see the Technical Information "IFCON Inline Fuse Connector Set16". Design of the Inline Fuse Connector by Phoenix Contact Figure 6: Design of the inline fuse connector by Phoenix Contact Position A B C D E Designation Plug-in contact (pin) from the SUNCLIX plug-in system Enclosure Electronic string fuse Connection of the plug-in contact with the fuse Plug-in contact (pin connector) from the SUNCLIX plug-in system 2.3 DC Load-Break Switch The SMA String-Monitor is equipped with a multi-terminal DC load-break switch with a viewing window for the contacts. The DC load-break switch disconnects the PV array connected to the SMA String Monitor from the inverter. Disconnection takes place at all poles. An alarm contact for the switching status of the DC load-break switch is available as an accessory (see Section 8, page 24). Upstream LV/HRC fuses required Use of the DC load-break switch is only permissible if LV/HRC fuses with gpv characteristic are installed upstream in the inverter or the main DC distribution box. 6 SSMUXX1015-TI-en-10 Technical Information

SMA Solar Technology AG 3 System Design 3 System Design 3.1 Design Considerations When designing an SMA String-Monitor, take the following aspects into account: Maximum current values Fuse rating Specifics for installation altitudes over 2,000 m Ambient temperatures over 50 C 3.2 Maximum Current Values The following current values must not be exceeded: Rated current (I DCmax ) up to 50 C: 315 A DC Rated current (I DCmax ) over 50 C: reduction by 2.5% per K Rated current per measurement input: 17.5 A DC The following applies: I String_max = I DC_max / number of string inputs 17.5 A The rated current applies for a maximum irradiation of 1,200 W/m 2 (hourly average value of the horizontal global radiation). In case the irradiation is higher, the rated current must be adapted linearly downwards. 3.3 Fuse Rating If you are using the inline fuse connectors offered by SMA Solar Technology AG, you can find information on the fuse rating in the Technical Information "IFCON Inline Fuse Connector Set16". If you are using other fuses, you can find information on the fuse rating in the datasheet of the fuse manufacturer. When selecting the fuse nominal values (I nom ), a reduction factor according to the manufacturer specifications for the short-circuit current of the connected PV array under standard test conditions (I SC_STC ) needs to be applied. The following applies: I SC_STC I nom x reduction factor or I nenn I SC_STC / reduction factor 3.4 Specifics for installation altitudes over 2,000 m 3.4.1 Reduction of Maximum Fuse Current When installing at altitudes over 2,000 m, an additional reduction factor for the fuse rating needs to be taken into account (when using the inline fuse connectors offered by SMA Solar Technology AG, see the Technical Information "IFCON Inline Fuse Connector Set16"; when using other fuses, see the datasheet of the fuse manufacturer). 3.4.2 Reduction of the Electrical Parameters of the DC Load-Break Switch The current is not being reduced. The rated voltage is reduced as follows: For installation altitudes of 2,001 m to 3,000 m = reduction by 1.0% per 100 m For installation altitudes of 3,001 m to 4,000 m = reduction by 1.2% per 100 m 3.4.3 UV Radiation UV radiation increases by approximately 1.5% for every 100 m of altitude. For example, the UV radiation at an altitude of 4,000 m is approximately 30% stronger than at an altitude of 2,000 m. UV radiation has damaging effects on plastics. Technical Information SSMUXX1015-TI-en-10 7

3 System Design SMA Solar Technology AG However, the UV radiation does not impact the functionality and the insulation of the plastic enclosure of the SMA String-Monitor. Over time, merely the color and condition of the enclosure surface might change slightly. 8 SSMUXX1015-TI-en-10 Technical Information

SMA Solar Technology AG 4 Mounting 4 Mounting You can mount the SMA String-Monitor to a wall or to a round or square pole. The material for pole mounting is available as an accessory (see Section 8, page 24). Requirements for the mounting location: The mounting location can be outdoors or indoors. The mounting location must be shaded, e.g. under a protective roof. The mounting location must be suitable for the weight and dimensions of the SMA Sunny String Monitor. The mounting location must be suitable for the wind load. Mounting space below the SMA String Monitor when using the inline fuse connectors: at least 800 mm. Pole requirements: Permissible pole diameter for round pole respectively pole width for square pole: 160 mm to 370 mm The pole must be in a vertical position. The pole must be suitable for the weight of the SMA String Monitor. Weight of the SMA String-Monitor without accessories: 35 kg. Dimensions: Figure 7: Dimensions of the SMA String-Monitor Position A B C Explanation 630.00 mm 600.00 mm 573.00 mm Technical Information SSMUXX1015-TI-en-10 9

4 Mounting SMA Solar Technology AG Position D E F Explanation 825.60 mm 850.00 mm 250.00 mm Observe minimum clearances: Figure 8: Minimum clearances Position A B C D E Explanation 200 mm 650 mm 800 mm 150 mm 650 mm Example: mounting on the PV array structure If the PV array is mounted on a free-standing structure, the SMA String Monitor can be fixed to this structure in a shaded position. Make sure that the SMA String-Monitor enclosure is not mounted in the path of water flowing off the module surface. 10 SSMUXX1015-TI-en-10 Technical Information

SMA Solar Technology AG 4 Mounting Strain Relief for Cables Strain relief for the cables must be provided for mounting. Strain relief can be effected by means of an external cable support rail. The cable support rail is not included in the scope of delivery. Technical Information SSMUXX1015-TI-en-10 11

5 Installation SMA Solar Technology AG 5 Installation 5.1 Installing the Ethernet Cables Up to ten SMA String-Monitors can be connected to each string monitoring communication connection of the inverter in line topology (number of connections for string monitoring communication see the inverter manual). The Ethernet cables are connected to the LSA+ terminals of the electronics assembly using LSA+ punch down tools. Interference in data transmission due to unshielded power cables If unshielded power cables are used, they generate an electromagnetic field during operation which may induce interference in network cables during data transmission. When laying network cables, observe the following minimum clearances to unshielded energy cables: For installation without separating strip: at least 200 mm For installation with aluminum separating strip: at least 100 mm For installation with steel separating strip: at least 50 mm Requirements for Ethernet cables: Cable type: copper, two-conductor Number of insulated conductor pairs and insulated conductor cross-section: 4 x 2 x 0.125 mm 2 to 0.205 mm 2 Cable type: at least Cat5 with shielding S-UTP, F-UTP or higher Maximum cable length: 100 m The Ethernet cable must be connected in accordance with EIA/TIA 568B (8-conductor): Signal TX+ TX- RX+ Not assigned Not assigned RX- Not assigned Not assigned EIA/TIA 568B (8-conductor) Insulated conductor color White/orange Orange/white or orange White/green Blue/white or blue White/blue Green/white or green White/brown Brown/white or brown 5.2 Installing the String Cables The string cables of the PV arrays are connected to the string cables of the SMA String-Monitor via DC connectors. The string cables of the PV arrays must be equipped with DC connectors for this. The DC connectors are available as an accessory (see Section 8, page 24). The DC connectors are pre-installed on the string cables of the SMA String- Monitor. Damage to the SMA String-Monitor due to moisture penetration In order to protect the enclosure of the SMA String Monitor from moisture, all unused DC inputs must be closed with suitable protective caps on the DC connectors. The protective caps are available from Phoenix Contact. 12 SSMUXX1015-TI-en-10 Technical Information

SMA Solar Technology AG 5 Installation 5.3 Installing the DC Main Cables You can connect up to two DC main cables per terminal by default. The material required for the bolted connections is already pre-mounted on the busbar; further material is required depending on the type of connection and cable. Depending on the cable cross-section, the DC main cables must be connected to the busbars via terminal lugs or V-box terminals: The following options are available for connecting the DC main cables: Connecting DC Main Cables to the Busbar Using Terminal Lugs DC main cables 70 mm 2 to 400 mm 2 made of aluminum or copper Aluminum cables: additionally required material: bimetal ring terminal lugs. Copper cables: tinned copper ring terminal lugs are pre-mounted. Connecting DC Main Cables to the Busbar Using V-Box Terminals DC main cables 70 mm 2 to 300 mm 2 made of aluminum or copper Additionally required material: V-box terminals (see Section 8, page 24). Connecting the DC Main Cables with Terminal Lugs Cable requirements for connection with terminal lugs: Use copper or aluminum cables only. The cables must be designed for the maximum PV voltage. Maximum number of cables per potential: 2 Permitted cable cross-section: 70 mm 2 to 400 mm 2 Terminal lug requirements: Use tin-plated terminal lugs only. For the connection, only the supplied screws, washers and nuts must be used. The terminal lugs must be designed according to the temperature. Temperature: +95 C The width of the terminal lugs must exceed the washer diameter. Washer diameter: 32 mm. This will ensure that the defined torques are effective over the whole surface. Maximum width of the terminal lugs when connecting two cables per potential: 48 mm Connecting the DC Main Cables with V-Box Terminals The DC main cables are connected directly to the busbars with V-box terminals. The V-box terminals are available as an accessory. Cable requirements for connection with V box terminals: Use copper or aluminum cables only. The cables must be designed for the maximum PV voltage. The cables must have double or reinforced insulation. Maximum number of cables per potential: 2 Permitted cable cross-section: 70 mm 2 to 300 mm 2 Permitted conductor cross-section: Cable type Conductor cross-section per potential Round, single-strand 70 mm 2 to 150 mm 2 Round, multi-strand 70 mm 2 to 300 mm 2 Technical Information SSMUXX1015-TI-en-10 13

5 Installation SMA Solar Technology AG Cable type Conductor cross-section per potential Sectoral, single-strand 70 mm 2 to 240 mm 2 Sectoral, multi-strand 70 mm 2 to 240 mm 2 14 SSMUXX1015-TI-en-10 Technical Information

SMA Solar Technology AG 6 Network Topology 6 Network Topology Network Topology Up to ten SMA String-Monitors can be connected to each string monitoring communication connection of the inverter in line topology (number of connections for string monitoring communication see the inverter manual). Figure 9: Network topology with SMA String-Monitor (example) Position A B Designation SMA String-Monitor Inverter (example) Communication Options The SMA String-Monitor is equipped by default with Ethernet communication. Distances of up to 100 m between two nodes can be bridged via Ethernet. The SMA String-Monitor can be retrofitted with optical fiber communication, if required (see Section 8, page 24). Distances of up to 2,000 m between two nodes can be bridged via optical fiber communication. Both communication types can be combined between two SMA String-Monitors, meaning that you can use Ethernet communication and/or optical fiber communication for the communication input and for the communication output depending on the distance to be bridged. Technical Information SSMUXX1015-TI-en-10 15

6 Network Topology SMA Solar Technology AG Information on communication options of the inverter can be found in the inverter manual. Figure 10: Communication options (example) Position A B C D Designation SMA String-Monitor Inverter (example) Ethernet communication Optical fiber communication 16 SSMUXX1015-TI-en-10 Technical Information

SMA Solar Technology AG 7 Technical Data 7 Technical Data Enclosure Outdoor installation Material Combustion properties IP degree of protection in accordance with IEC 60529 IK degree of protection in accordance with IEC 62262 Protection class in accordance with IEC 60529 Shaded Glass-fiber reinforced plastic Self-extinguishing, halogen-free IP54 IK10 II Pollution degree in accordance with IEC 61010-1 2 Color RAL 7035 UV resistance in accordance with IEC 61439-1 Wall mounting Pole mounting* Lock cylinder Cable support rail** * available as an accessory (see Section 8, page 24) ** to be provided by the customer Yes Yes Yes Double-bit key for switch cabinet Yes Mechanical Data Enclosure width Enclosure with including vent plug Enclosure height including wall bracket lugs Enclosure height including string cable harness Enclosure depth Enclosure depth including wall bracket lugs Enclosure depth including wall bracket lugs and pole mounting bracket* Maximum weight** Weight of pole mounting bracket* Minimum clearance between enclosure and floor if inline fuse connectors are installed underneath the SMA String- Monitor 600 mm 630 mm 850 mm 1,055 mm 300 mm 320 mm 385 mm 34 kg 2.1 kg 800 mm * available as an accessory (see Section 8, page 24) ** depending on the number of string inputs of the SMA String-Monitor, without accessories Electrical Data PV array Negatively grounded/positively grounded/insulated Technical Information SSMUXX1015-TI-en-10 17

7 Technical Data SMA Solar Technology AG Electrical Data Rated voltage At installation altitudes over 2,000 m, an additional reduction factor must be taken into account. Rated current (I DCmax ) at 50 C* Rated current (I DCmax ) at above 50 C* Rated current per measuring input* Fuse characteristics 1,000 V DC / 1,500 V DC 2,001 m to 3,000 m reduction by 1.0% per 100 m 3,001 m to 4,000 m reduction by 1.2% per 100 m 315 A DC Reduction by 2.5% per K 17.5 A DC gpv Number of string inputs per potential 16 / 24 / 32 DC supply voltage from PV array +200 V DC to +1,500 V DC External AC supply voltage** 230 V AC ±20% DC load-break switch DC load-break switch - actuation under load DC load-break switch - actuation at 40 C Surge arrester DC Overvoltage category 400 A DC Max. 200 switching cycles Max. 100 switching cycles Type 2 (monitored) I nom = 20 ka I max = 40 ka II * Maximum continuous operating current up to the specified ambient temperature, taking a maximum irradiation up to 1,200 W/m 2 into account (hourly average value of the horizontal global radiation). In case the irradiation is higher, the rated current must be adapted linearly downwards. ** available as an accessory (see Section 8, page 24) Current Measurement Number of measuring channels 16 / 24 / 32 Current measurement range 2.5 A to +17.5 A Maximum error at +25 C* ±0.5% Maximum error in temperature range* ±1.0% * based on the end value of the current measurement range Voltage Measurement Number of measuring channels 1 Voltage measurement range +250 V DC to +1,500 V DC Maximum error at +25 C* ±0.5% Maximum error in temperature range* ±1.0% * based on the current measurement range end value 18 SSMUXX1015-TI-en-10 Technical Information

SMA Solar Technology AG 7 Technical Data Measurement Internal Temperature SMA String-Monitor Temperature measurement range Accuracy 40 C to +100 C ±2% of measuring range end value DC Main Connection to Busbar Connection via busbar Ring terminal lugs for M12 screw Maximum conductor cross-section 400 mm 2 Suitable connection material Copper/aluminum* Number of cables per potential 1 / 2 Cable gland M50 Sealing range of cable glands** 17.0 mm to 38.5 mm * with suitable terminal lug (see Section 5.3, page 13) ** Tightness of seal must be assured using the mounted seal insert or the size-reducing seal insert supplied DC Main Connection to Box Terminals* Type of terminal V-Box terminal Maximum conductor cross-section 300 mm 2 Suitable connection material Copper/aluminum Number of cables per potential 1 / 2 Cable gland M50 Sealing range of cable gland** 17.0 mm to 38.5 mm * available as an accessory (see Section 8, page 24) ** Tightness of seal must be assured using the mounted seal insert or the size-reducing seal insert supplied Connecting the String Cable to the DC Connector* Cable type PV 1-F Conductor cross-section at 6 mm 2 DC connector 2.5 mm 2 to 6.0 mm 2 Cable diameter at 6 mm 2 DC connector 5 mm to 8 mm Conductor cross-section at 16 mm 2 DC connector 6 mm 2 to 16 mm 2 Cable diameter at 16 mm 2 DC connector * available as an accessory (see Section 8, page 24) 5.5 mm to 10.0 mm Connection Functional Grounding to DC Surge Arrester Terminal Connecting terminal plate with screw connection for grounding conductor Conductor cross-section for surge arrester type 2 25 mm 2 to 35 mm 2 Cable gland Multiple feed-through Technical Information SSMUXX1015-TI-en-10 19

7 Technical Data SMA Solar Technology AG Connection Functional Grounding to DC Surge Arrester Sealing range of cable gland Recommended cable type 5.0 mm to 10.2 mm NYY-O Connection Functional Grounding to Electronic Assembly Terminal Spring-cage terminal with actuation lever on the electronic assembly Conductor cross-section for surge arrester type 2 6 mm 2 Cable gland Sealing range of cable gland Recommended cable type Multiple feed-through 5.0 mm to 10.2 mm NYY-O Interfaces for Temperature Measurement Number (module/ambient temperature) 2 Plug-in temperature sensor Measurement range PT100 and PT1000 with two-, three- and four-wire measurement 40 C to +100 C Maximum error at +25 C* ±0.5% Maximum error in temperature range* ±2.0% Terminal Spring-cage terminal with actuation lever on the electronic assembly Conductor cross-section 0.08 mm 2 to 1.00 mm 2 Cable gland Sealing range of cable gland * based on the measurement range end value (with four-wire measurement) Multiple feed-through 3.2 mm to 6.5 mm Digital Input (Customer) Quantity 1 Supply voltage 24 V DC ±20% Maximum output current (for sensors) Switching threshold, low level Switching threshold high level Nominal input voltage Nominal input current Terminal 150 ma V LMAX 3 V V HMIN 15 V 24 V DC 5 ma Spring-cage terminal with actuation lever on the electronic assembly 20 SSMUXX1015-TI-en-10 Technical Information

SMA Solar Technology AG 7 Technical Data Digital Input (Customer) Conductor cross-section 0.08 mm 2 to 1.00 mm 2 Maximum cable length Cable gland Sealing range of cable gland 30 m Multiple feed-through 3.2 mm to 6.5 mm Digital Input for Alarm Contact* for DC Load-Break Switch Quantity 1 Design Nominal input voltage (typical) Nominal input current (typical) Terminal * available as an accessory (see Section 8, page 24) Potential-free contact 24 V DC 5 ma Supplied preassembled cable with plug contact Analog Current Input Quantity 1 Supply voltage 24 V DC ±20% Maximum output current (for sensors) Input measurement resistance Current measurement range 150 ma 250 Ω 4 ma to 20 ma Maximum error at +25 C* ±0.3% Maximum error in temperature range* ±2.0% Terminal Maximum cable length Spring-cage terminal with actuation lever on the electronic assembly 30 m Conductor cross-section 0.08 mm 2 to 1.00 mm 2 Cable gland Sealing range of cable gland * based on the measuring range end value Multiple feed-through 3.2 mm to 6.5 mm / 5.0 mm to 10.2 mm Digital Output Type Maximum switching power AC Maximum switching power DC Potential-free change-over contact 250 V AC / 2 A 24 V DC / 2 A 48 V DC / 1 A Technical Information SSMUXX1015-TI-en-10 21

7 Technical Data SMA Solar Technology AG Digital Output Minimum electrical endurance when the maximum switching voltage and maximum switching current are complied with Terminal 1,000,000 switching cycles Spring-cage terminal with actuation lever on the electronic assembly Conductor cross-section 0.5 mm 2 to 6.0 mm 2 Cable gland Sealing range of cable gland Multiple feed-through 3.2 mm to 6.5 mm / 5.0 mm to 10.2 mm Data Transmission Copper Wire Data interface Local area network (LAN) Connection without surge arrester Connection with surge arrester* Recommended cable type Maximum cable length Cable gland Sealing range of cable gland * available as an accessory (see Section 8, page 24) Modbus (TCP) Ethernet LSA+ RJ45 Cat5 cable with shielding S-UTP, F-UTP or higher 100 m Multiple feed-through 3.2 mm to 6.5 mm / 5.0 mm to 10.2 mm Data Transmission Optical Fiber* Data interface Local area network (LAN) Direct connection multimode optical fiber cable to optical fiber Piggy-Back** Modbus (TCP) Ethernet SC coupling Fiber type Multimode 50.0/125.0 µm or 62.5/125.0 µm Fiber grade Connection multimode optical fiber cable to splice box *** Cable gland OM1 or higher Splicing/optical fiber pigtail SC multimode Multiple feed-through Sealing range of cable gland 3.2 mm to 6.5 mm / 5.0 mm to 10.2 mm * Accessory optical fiber Piggy-Back required OF Piggy-Back accessories required (see Section 8, page 24) ** available as an accessory (see Section 8, page 24) *** available as an accessory (see Section 8, page 24); optical fiber pigtail is not included in the accessory scope of delivery Ambient Conditions Standard operating temperature range 40 C to +50 C 22 SSMUXX1015-TI-en-10 Technical Information

SMA Solar Technology AG 7 Technical Data Ambient Conditions Extended operating temperature range Storage temperature 40 C to +60 C 40 C to +70 C Relative humidity* 0% to 95% Maximum altitude above MSL * condensation possible 2,000 m / 4,000 m (derating) Technical Information SSMUXX1015-TI-en-10 23

8 Accessories SMA Solar Technology AG 8 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 Brief description SMA order number Inline fuse connector set Y connector set (available soon) Inline fuse connector set consisting of 16 PV inline fuse connectors Y connector set consisting of 16 Y connectors See the Technical Information "IFCON Inline Fuse Connector Set16" YCON16SFMM (female/2male) YCON16SMFF (male/2female) PV connector set PV connector set consisting of 16 connectors for the field wiring PVCON16S06F11 (2.5 mm 2 to 6.0 mm 2 1,100 V (+)) PVCON16S06M11 (2.5 mm 2 to 6.0 mm 2 1,100 V ( )) PVCON16S06F15 (2.5 mm 2 to 6.0 mm 2 1,500 V (+)) PVCON16S06M15 (2.5 mm 2 to 6.0 mm 2 1,500 V ( )) PVCON16S16F15 (6.0 mm 2 to 16.0 mm 2 1,500 V (+)) PVCON16S16M15 (6.0 mm 2 to 16.0 mm 2 1,500 V ( )) Optical fiber interface module for SMA String-Monitors Optical fiber splice box set for SMA String-Monitors SSM-U pole mounting set Alarm Contact Kit for SMA String- Monitors Ethernet overvoltage protection set for SMA String-Monitors Overvoltage protection set for supply voltage 230 V AC for SMA String- Monitors Optical fiber interface module with multimode SC coupling, type Piggy- Back for the SMA String-Monitor Optical fiber splice box set MM with two SC/SC Duplex patch cables as retrofit kit for the SMA String-Monitor Set for mounting the SMA String- Monitor to a pole Alarm contact set 1 NO (make contact) for the switch state indicator for the SMA String-Monitor Overvoltage protection for the Ethernet communication of the SMA String-Monitor Overvoltage protection for external 230 V AC supply voltage of the SMA String-Monitor via the inverter SSM-U-FOPB SSM-U-FOSB SSM-U-PM SSM-U-AUXCONT SSM-U-COMOVP SSM-U-AUXPBOVP 24 SSMUXX1015-TI-en-10 Technical Information

SMA Solar Technology AG 8 Accessories Designation Brief description SMA order number Power supply assembly for external power supply of SMA String-Monitors V box terminal set for the SMA String-Monitors SSM-U and SSMxx-21-BS Assembly for external 230 V AC supply voltage of the SMA String-Monitor via the inverter V box terminals with connection brackets SSSM-U-AUXPB AFC-300 Technical Information SSMUXX1015-TI-en-10 25

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