switching device for backup systems automatic switch box...

AS-BOX-M_L-IA-IEN110320 | IMEN-AS-BOX-M_L | Version 2.0 EN

Switching device for Backup systemsAUTOMATIC SWITCH BOX M-20/L-20Installation Guide

SMA Solar Technology AG Table of Contents

Installation Guide AS-BOX-M_L-IA-IEN110320 3

Table of Contents1 Notes on this Guide . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51.1 Validity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51.2 Target Group . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51.3 Additional Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51.4 Symbols Used . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52 Safety . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 62.1 Appropriate usage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 62.2 Safety Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 82.3 Explanation of Symbols . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 82.3.1 Symbols on the Type Label . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .82.3.2 Symbols in the Automatic Switch Box . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9

3 Scope of delivery . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 103.1 Automatic Switch Box M. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 103.2 Automatic Switch Box L. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 124 Mounting the Automatic Switch Box . . . . . . . . . . . . . . . . 145 Electrical Connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 205.1 Overview of the Connection Area . . . . . . . . . . . . . . . . . . . . . . 205.1.1 Automatic Switch Box M. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 205.1.2 Automatic Switch Box L . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 245.2 Inserting the cable. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 275.3 Connecting functional and operational grounding . . . . . . . . . . 305.4 Activating the phase coupling for 1-phase Backup System . . . 325.5 Connecting Loads . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 335.6 Connecting the PV Plant . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 355.7 Connecting the Feed-in Meter. . . . . . . . . . . . . . . . . . . . . . . . . . 375.8 Connecting the Consumption Meter . . . . . . . . . . . . . . . . . . . . . 38

Table of Contents SMA Solar Technology AG

4 AS-BOX-M_L-IA-IEN110320 Installation Guide

5.9 Connecting the Sunny Backup . . . . . . . . . . . . . . . . . . . . . . . . . 405.10 Connecting External Signal for Battery Feed-In . . . . . . . . . . . . 415.11 Connecting the Generator . . . . . . . . . . . . . . . . . . . . . . . . . . . . 425.12 Connecting the Communication Cables . . . . . . . . . . . . . . . . . . 446 Commissioning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 466.1 Dimensioning the thermal fuse for loads . . . . . . . . . . . . . . . . . . 466.2 Dimensioning the thermal fuse for the generator . . . . . . . . . . . 476.3 Commission the Automatic Switch Box . . . . . . . . . . . . . . . . . . . 487 Disconnecting the Automatic Switch Box from

voltage sources . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 498 Maintenance and Cleaning . . . . . . . . . . . . . . . . . . . . . . . . 509 Decommissioning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 519.1 Dismantling the Automatic Switch Box . . . . . . . . . . . . . . . . . . . 519.2 Storing the Automatic Switch Box . . . . . . . . . . . . . . . . . . . . . . . 529.3 Disposing of the Automatic Switch Box . . . . . . . . . . . . . . . . . . 5210 Technical Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5310.1 Automatic Switch Box M-20 . . . . . . . . . . . . . . . . . . . . . . . . . . . 5310.2 Automatic Switch Box L-20 . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5711 Contact . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61

SMA Solar Technology AG 1 Notes on this Guide


1 Notes on this Guide1.1 ValidityThis guide applies to the following device types:

• AS-BOX-M-20• AS-BOX-L-20

1.2 Target GroupThis guide is for electrically skilled persons. The tasks described in this manual may be performed by electrically skilled persons only.

1.3 Additional InformationAdditional information regarding the Sunny Backup system and the Automatic Switch Box can be found in the FAQ section at www.SMA.de/en.

1.4 Symbols UsedThe following types of safety warnings and general information are used in this guide:

"DANGER" indicates a hazardous situation which, if not avoided, will result in death or serious injury!

"WARNING" indicates a hazardous situation which, if not avoided, could result in death or serious injury!

"CAUTION" indicates a hazardous situation which, if not avoided, could result in minor or moderate injury!

"NOTICE" indicates a situation that can result in property damage if not avoided!

ImportantImportant indicates important information.

2 Safety SMA Solar Technology AG


2 Safety2.1 Appropriate usageThe Automatic Switch Box is a switching unit for Backup systems. The Sunny Backup regulates and controls the Automatic Switch Box and forms a stand-alone grid in case of a power outage. During a grid failure, the Automatic Switch Box safely disconnects the connected PV plant and the connected loads from the power distribution grid and connects them to the stand-alone grid.In case you ordered the Automatic Switch Box with generator connection, you can include a generator into your Backup system. If a generator is included into the Backup system, it can be connected to the stand-alone grid via the Automatic Switch Box in case of a grid failure, if required.The Automatic Switch Box M-20 and the Automatic Switch Box L-20 are both suited for TT systems and TN systems. You may operate the Automatic Switch Box M-20 only in combination with a Sunny Backup 5000 and the Automatic Switch Box L-20 only in combination with 3 Sunny Backup 5000. In a 3-phase Backup system you must configure one of the 3 Sunny Backup systems as a master and the other 2 as slave. The Sunny Backup master evaluates the data recorded in the Automatic Switch Box, coordinates all switching operations and controls all components of the Backup system. You will find further information in the Sunny Backup 5000 manual.Do not exceed the maximum connection power of the individual outgoing lines in the Automatic Switch Box. You will find the maximum connection power in section 10 ”Technical Data”, page 53.Do not use the Automatic Switch Box for purposes other than those described here. Alternative uses, modifications, and the installation of components void the warranty claims and operation permit.This guide is part of the Automatic Switch Box. Pay attention to all the activities described in this guide. Keep this guide in a convenient place for future reference.

SMA Solar Technology AG 2 Safety


Principle of a 3-phase Backup system including an Automatic Switch Box

2 Safety SMA Solar Technology AG


2.2 Safety Instructions

2.3 Explanation of Symbols

2.3.1 Symbols on the Type Label

Danger to life due to high voltages.• All work on the Automatic Switch Box must be performed by electrically skilled persons.

Symbol DescriptionBeware of dangerous electrical voltage.The Automatic Switch Box operates at high voltages. All work on the Automatic Switch Box must be performed by electrically skilled persons.Beware of hot surface.The Automatic Switch Box can become hot during operation. Avoid contact during operation.Observe all documents provided.

Do not dispose of the Automatic Switch Box and its components via the household garbage (see section 9.3 ”Disposing of the Automatic Switch Box”, page 52).

CE mark.The Automatic Switch Box complies with the requirements of the applicable EC guidelines.Protection rating IP54.The Automatic Switch Box is protected against dust deposits in the interior and splashes of water from all angles. Complete contact protection.Protection class II.The Automatic Switch Box has a double insulation and is therefore protected against direct as well as indirect contact.

SMA Solar Technology AG 2 Safety


2.3.2 Symbols in the Automatic Switch BoxSymbol Description

Beware of dangerous electrical voltage.The Automatic Switch Box operates at high voltages. The covers inside the Automatic Switch Box serve as contact protection. Do not open covers during operation.Beware of dangerous electrical voltage.After you have disconnected the Automatic Switch Box, the capacitors on the control board will take 5 minutes to discharge. Wait 5 minutes before opening the cover.

3 Scope of delivery SMA Solar Technology AG


3 Scope of delivery3.1 Automatic Switch Box M

Figure 1: Scope of delivery of the Automatic Switch Box M

Position Number DescriptionA 1 Automatic Switch BoxB 1 Switch cabinet keyC 4 Exterior attachmentD 4 PlugE 1 Communication cable; redF 1 Communication cable; blackG 3 Warning sticker: "Automatic emergency backup-up power system

present!"; german, english, greekH 3 Warning sticker: "Phase coupling"; german, english, greekI 1 Push-in type jumper barK 4 Fuse link D02; 40 AL 4 Headed sleeve for fuse link D02; 40 AM 3 M32x1.5 cable gland; reduced grip rangeN 3 M25x1.5 cable glandO 3 M20x1.5 cable gland; reduced grip range

SMA Solar Technology AG 3 Scope of delivery


P 1 M20x1.5 cable glandQ 1 Counter nut M32R 3 Counter nut M25S 4 Counter nut M20T 1 Installation Guide

Position Number Description

3 Scope of delivery SMA Solar Technology AG


3.2 Automatic Switch Box L

Figure 2: Scope of delivery for the Automatic Switch Box L

Position Number DescriptionA 1 Automatic Switch BoxB 1 Switch cabinet keyC 4 Exterior attachmentD 4 PlugE 3 Communication cable; redF 1 Communication cable; blackG 3 Warning sticker: "Automatic emergency backup-up power system

present!"; german, english, greekH 1 Push-in type jumper barI 3 Fuse link D02; 63 AK 3 Fuse link D02; 50 A*

L 3 Headed sleeve for fuse link D02; 50 A*

M 5 M32x1.5 cable glandN 3 M25x1.5 cable glandO 3 M20x1.5 cable gland; reduced grip rangeP 1 M20x1.5 cable glandQ 4 Counter nut M32

SMA Solar Technology AG 3 Scope of delivery


R 3 Counter nut M25S 4 Counter nut M20T 1 Reduction M50-M32U 1 Counter nut M50V 1 Installation Guide

* optional

Position Number Description

4 Mounting the Automatic Switch Box SMA Solar Technology AG


4 Mounting the Automatic Switch BoxRequirements for the mounting location:

☐ Foundation consists of solid material.☐ The foundation is suitable for the weight and dimensions of the Automatic Switch Box (see

section 10 ”Technical Data”, page 53).☐ The mounting location is accessible at all times.☐ Climatic conditions are met (see section 10 ”Technical Data”, page 53).☐ Mounting location is not exposed to direct sunlight.☐ Mounting location is protected against splashes of water.☐ Technical connection requirements of the network operator are met.

Mounting position:

Figure 3: Permitted and prohibited mounting positions

Danger to life due to fire or explosion.• Do not mount the Automatic Switch Box on flammable construction materials.• Do not mount the Automatic Switch Box near highly flammable construction materials.• Do not mount the Automatic Switch Box in potentially explosive areas.

SMA Solar Technology AG 4 Mounting the Automatic Switch Box


Minimum distances of the Automatic Switch Box M:

Figure 4: Distances to be observed for Automatic Switch Box M



Minimum distances of the Automatic Switch Box L:

Figure 5: Distances to be observed for Automatic Switch Box L



Dimensions of the Automatic Switch Box M:

Figure 6: Dimensions of the Automatic Switch Box M with exterior attachments mounted



Dimensions of the Automatic Switch Box L:

Figure 7: Dimensions of the Automatic Switch Box L with exterior attachments mounted



1. Insert the exterior attachments vertically into the rack on the backside of the Automatic Switch Box.Hint: The exterior attachments can also be inserted horizontally into the racks on the backside of the Automatic Switch Box.

2. Move the upper exterior attachments upwards and fasten them with plugs. If the exterior attachments are inserted horizontally, move them sideways.

3. Move the lower exterior attachments downwards and fasten them with plugs. If the exterior attachments are inserted horizontally, move them sideways.

4. Mark the position of the drill holes. Take the dimensions into account.5. Drill the holes and insert suitable wall anchors.6. Screw in the M8-screws. Leave the screws protruding out a bit.7. Hang the Automatic Switch Box, including the

exterior attachments, onto the screws.

Risk of injury due to the heavy weight of the Automatic Switch Box.• Take the weight of the Automatic Switch Box into account (see section 10 ”Technical

Data”, page 53).

5 Electrical Connection SMA Solar Technology AG


5 Electrical Connection5.1 Overview of the Connection Area

5.1.1 Automatic Switch Box MInterior View

Figure 8: Interior components of the Automatic Switch Box M

SMA Solar Technology AG 5 Electrical Connection


Position DescriptionA RJ45 socket for connecting the black communication cableB RJ45 socket for the connection terminal of the red communication cableC Terminal strip "1_1-X6/ Generator" for connecting the generator*

* optional

D Terminal strip "AS-X3/ Backup Loads" for connecting the loadsE Terminal strip "AS-X1/ Load Meter" for connecting the consumption meterF Terminal strip "AS-X2/ SBU 5000" for connecting the Sunny BackupG Terminal strip "AS-X8" for connecting the operational and functional groundingH Terminal strip "AS-X7 Feed in Signal" for connecting an external signal for battery

feed-inI Terminal strip "AS-X5/ PV Meter" for connecting the feed-in meterK Terminal strip "AS-X4/ PV System" for connecting the PV plant or any other

energy source



Left flange plat

Figure 9: Left flange plate including hyphenation points at the bottom of the Automatic Switch Box M Position Description ExplanationA Hyphenation point for M25x1.5 cable gland For connecting the feed-in meterB Hyphenation point for M25x1.5 cable gland For connecting the PV plantC Hyphenation point for M20x1.5 cable gland For connecting the external signalD Hyphenation point for M20x1.5 cable gland;

reducedFor connecting the functional grounding

E Hyphenation point for M32x1.5 cable gland For connecting the consumption meterF Hyphenation point for M20x1.5 cable gland;

reducedFor connecting the operational grounding

G Hyphenation point for M25x1.5 cable gland For connecting the Sunny Backup



Right flange plate

Figure 10: Right flange plate including hyphenation points at the bottom of the Automatic Switch Box M

Position Description ExplanationA Enclosure opening with filler-plugs for

M32x1.5 cable gland; reducedFor connecting the loads

B Enclosure opening with filler-plugs for M32x1.5 cable gland; reduced

For connecting the generator

C Cable support sleeve For connecting the communication cables



5.1.2 Automatic Switch Box LInterior View

Figure 11: Interior components of the Automatic Switch Box L



Left flange plat

Figure 12: Left flange plate including hyphenation points at the bottom of the Automatic Switch Box L

Position DescriptionA RJ45 socket for connecting the black communication cableB RJ45 socket for connecting the red communication cablesC Terminal strip "1_1-X6/ Generator" for connecting the generator*

* optional

D Terminal strip "AS-X1/ Load Meter" for connecting the consumption meterE Terminal strip "AS-X5/ PV Meter" for connecting the feed-in meterF Terminal strip "AS-X4/ PV System" for connecting the PV plant or any other

energy sourceG Terminal strip "AS-X7 Feed in Signal" for connecting an external signal for

battery feed-inH Terminal strip "AS-X2/ SBU 5000" for connecting the Sunny BackupI Terminal strip "AS-X8" for connecting the operational and functional groundingK Terminal strip "AS-X3/Backup Loads" for connecting the loads

Position Description ExplanationA Hyphenation point for M25x1.5 cable gland For connecting the Sunny BackupB Hyphenation point for M32x1.5 cable gland For connecting the loadsC Hyphenation point for M20x1.5 cable gland;

reducedFor connecting the functional grounding

D Hyphenation point for M20x1.5 cable gland; reduced

For connecting the operational grounding

E Hyphenation point for M20x1.5 cable gland For connecting the external signal



Middle flange plate

Figure 13: Middle flange plate including hyphenation points at the bottom of the Automatic Switch Box L

Right flange plate

Figure 14: Right flange plate including hyphenation points at the bottom of the Automatic Switch Box L

Position Description ExplanationA Hyphenation point for M32x1.5 cable

glandFor connecting the PV plant

B Hyphenation points for M50-M32 reduction and M32x1.5 cable gland

For connecting the feed-in meter

C Hyphenation point for M32x1.5 cable gland

For connecting the consumption meter

Position Description ExplanationA Enclosure opening with filler plugs for

M32x1.5 cable glandFor connecting the generator

B Cable support sleeve For connecting the communication cables



5.2 Inserting the cableInsert each cable into the Automatic Switch Box according to the following procedure. Insert the communication cable as described in section 5.12 ”Connecting the Communication Cables”, page 44.

Preparing the Flange PlatePrepare the left and right flange plate of the Automatic Switch Box M according to the following procedure.Prepare only the left and middle flange plate of the Automatic Switch Box L according to the following procedure. The right flange plate does not need to be prepared.

1. Open the Automatic Switch Box with the switch cabinet key.2. Loosen the screws of the lower contact protection

and remove the contact protection.

3. Loosen all retaining clips of the flange plates using a screwdriver.

Displayed graphicsAs an example, only the Automatic Switch Box L will be graphically displayed in this section. The procedure for the Automatic Switch Box M is identical.



4. Remove the flange plates.

5. Break out the hyphenation points using a screwdriver and a hammer.

6. Insert the cable glands into the openings and fasten them with counter nuts.

7. Screw the retaining clips of the flange plates with a screwdriver slightly upwards.



8. Insert the flange plates into the enclosure of the Automatic Switch Box and tighten them with screws.

Routing the cables through cable glandsRoute every cable through the cable gland according to the following procedure. Insert the communication cable as described in section 5.12 ”Connecting the Communication Cables”, page 44.

1. Slightly loosen the lock nut of the cable gland.2. Strip cable jacket.3. Strip off the insulated conductors. Take the stripping length into account

(see section 10 ”Technical Data”, page 53).4. Insert the cable into the Automatic Switch Box through the cable gland.5. Tighten the lock nut firmly to the cable gland.

6. Aluminum cableIf you use an aluminum cable, fill the connection terminals with contact paste. SMA Solar Technology AG recommends the contact paste "Alu-Plus" from WAGO company. This prevents contact corrosion.



5.3 Connecting functional and operational grounding

TN system:When connecting in a TN system, only connect a functional grounding. This connection activates the EMC interference elimination measures in the Automatic Switch Box. The functional grounding is not identical to the protective grounding of the Automatic Switch Box.TT system:When connecting in a TT system, connect an operational and a functional grounding. This connection activates the EMC interference elimination measures in the Automatic Switch Box. By means of the operational grounding, the neutral conductor of the Sunny Backup is grounded via a resistor. The operational and the functional grounding are not identical to the protective grounding of the Automatic Switch Box.Requirements:☐ In case of a functional grounding, the cable cross-section for copper cables is 6 mm².☐ In case of a redundant connection of the operational grounding, the cable cross-section for

each copper cable is ≥ 6 mm².☐ In case of an ordinary connection of the operational grounding, the cable cross-section for

copper cables is ≥ 10 mm².

Connection terminals "PE" in the Automatic Switch Box

The Automatic Switch Box corresponds to protection class II. The connection terminals "PE" in the connection area do not serve as a protective grounding of the Automatic Switch Box enclosure. Via the connection terminals "PE" in the connection area of the Automatic Switch Box, PE of the individual terminals will only be routed through the Automatic Switch Box and distributed in the following installation.



Connection terminals:

1. Insert the cable (see section 5.2).2. Connecting the functional grounding:

– Connect PE of the building's equipotential bonding bar to the connection terminal "FE" of the terminal strip "AS-X8".

Displayed graphicAs an example, only the Automatic Switch Box L will be graphically displayed in this section. The labeling of the connection terminals as well as the procedure for connecting the Automatic Switch Box M is identical.

3.Risk of fatal injury due to failure of the protective measures in the TT system.If the operational grounding is not connected to the Automatic Switch Box, the residual current device between loads and Automatic Switch Box and between PV plant and Automatic Switch Box will not trip in case of a failure.

• If a TT system is present, connect the operational grounding.– Connect the PE of the building's equipotential bonding bar to the connection terminal

"GND (PE)" of the terminal strip "AS-X8".



5.4 Activating the phase coupling for 1-phase Backup SystemIn case of a grid failure, the Automatic Switch Box M can supply loads which are not connected to the Backup-Phase L1. In the event of a grid failure, you can choose whether the Automatic Switch Box connects all 3 phases or just 2 phases. As soon as the power distribution grid returns, the Automatic Switch Box disconnects the connected phases.

• Switch on switch-disconnector "Q9" and "Q10" for coupling all 3 phases in the case of a grid failure.

• Switch on switch-disconnector "Q9" for coupling L1 and L2 in case of a grid failure.• Switch on switch-disconnector "Q10" for coupling L1 and L3 in case of a grid failure.• Attach warning sticker "phase coupling" in the distribution when phase coupling is activated.• Check if the parameter "224.01 SilentEna" of the Sunny Backup is set to Disable when phase

coupling is activated. If the parameter "224.01 SilentEna" is set to Enable, set the parameter on Disable. This is to deactivate the "Silent Mode" of the Sunny Backup and to make the phase coupling of the Automatic Switch Box possible.

Switch-over times to Backup operationThe switch-over times for the loads on L2 and L3 are longer than for the loads on the Backup-phase L1. The switch-over times just take seconds.

Capacity overload of Sunny Backup during phase coupling• Only activate phase couplings for phases whose power does not exceed the maximum

power of the Sunny Backup (see section 10 "Technical data", Page 52).

Destruction of 3-phase loads during phase coupling.• During phase coupling only connect 1-phase loads to the Automatic Switch Box.



5.5 Connecting LoadsOvercurrent protective device and switch-disconnector:During stand-alone grid operation, the Sunny Backup and the PV plant supply the loads. This disables the fuse on the grid side. During stand-alone grid operation, the fuse-switch-disconnector "AS-F5" protects the loads' cables against overload.

Requirements for the residual current device in the TT system:☐ The nominal tripping current is 100 mA maximum.☐ Secure tripping with several residual current devices is provided if

g x ΣIΔN ≤ 100 mA.g = coincidence factor of the residual current devicesΣIΔN = total of nominal tripping currents of the residual current devicesCoincidence factorg = 1 corresponds to 1 residual current device in the system.g = 0.5 corresponds to 2 ... 4 residual current devices in the system.g = 0.35 corresponds to 5 ... 10 residual current devices in the system.g = 0.25 corresponds to > 10 residual current devices in the system.

Risk of lethal electric shock in the TT system without personal protection.• Install residual current devices between the Backup system and the loads' electric circuit.




1. Insert the cable (see section 5.2).2. Connect PE to terminal strip "AS-X3/ Backup Loads". Take the labeling on the connection

terminals into account.3. Connect N to terminal strip "AS-X3/ Backup Loads". Take the labeling on the connection

terminals into account.4. Connect L1, L2 and L3 to terminal strip "AS-X3/ Backup Loads". Take the labeling on the

connection terminals into account.




5.6 Connecting the PV PlantConnecting other energy sources:Instead of the PV plant, you can also connect other energy sources (e.g. small wind turbine systems) to the Automatic Switch Box. In any case, make sure that an energy meter with the corresponding tariff is connected to the Automatic Switch Box.A mixing of energy sources (e.g. the connection of a PV plant and a small wind turbine system) is not admissible on the part of the network operator since the supply rates of the energy sources differ.TN systems: Overcurrent protective deviceThe Automatic Switch Box does not replace the distributor box or fuse box of the PV plant.

• Install a line circuit breaker between the Automatic Switch Box and the PV plant. Be sure to observe all standards applicable to the installation site.

TT system: residual current deviceThe Automatic Switch Box does not replace the distributor box or fuse box of the PV plant.

• Install a residual current device and a line circuit breaker between the Automatic Switch Box and the PV plant. Be sure to observe the requirements for residual current devices.

Requirements for the residual current device in the TT system:☐ The residual current device is suitable for leakage currents of the PV inverter.☐ The nominal tripping current is 100 mA maximum.☐ Secure tripping with several residual current devices is provided if

g x ΣIΔN ≤ 100 mA.g = coincidence factor of the residual current devicesΣIΔN = total of nominal tripping currents of the residual current devicesCoincidence factorg = 1 corresponds to 1 residual current device in the system.g = 0.5 corresponds to 2 ... 4 residual current devices in the system.g = 0.35 corresponds to 5 ... 10 residual current devices in the system.g = 0.25 corresponds to > 10 residual current devices in the system.

Cable Requirements:☐ The cable is dimensioned according to the fuse between the feed-in meter and the

Automatic Switch Box and according to the cross-section of the connection terminals.☐ In a Backup system with generator, the output fuse of the generator has been taken into account:

if the generator feed-in at the terminal strip "AS-X6/ Generator" has a higher fuse than the cable of the feed-in meter, the cables of the PV plant are dimensioned for this increased fuse value.




1. Insert the cable (see section 5.2).2. Connect PE to terminal strip "AS-X4/ PV System". Take the labeling on the connection terminals

into account.3. Connect N to terminal strip "AS-X4/ PV System". Take the labeling on the connection terminals

into account.4. If you use the Automatic Switch Box M, connect L to terminal strip "L1" of the connection terminal

"AS-X4/ PV System".5. If you use the Automatic Switch Box L, connect L1, L2 and L3 to the terminal strip

"AS-X4/ PV System". Take the labeling on the connection terminals into account.




5.7 Connecting the Feed-in MeterConnection terminals:

2. If a feed-in meter does not need to be connected to the Automatic Switch Box, bridge the terminal strips "AS-X5/ PV Meter" and "AS-X1/ Load Meter“.

3. Insert the cable (see section 5.2).4. Connect PE to terminal strip "AS-X5/ PV Meter". Take the labeling on the connection terminals

into account.5. Connect N to terminal strip "AS-X5/ PV Meter". Take the labeling on the connection terminals

into account.6. If you use the Automatic Switch Box M, connect L to terminal strip "L1" of the connection terminal

"AS-X5/ PV Meter".7. If you use the Automatic Switch Box L, connect L1, L2 and L3 to the terminal strip

"AS-X5/ PV Meter". Take the labeling on the connection terminals into account.


1.Destruction of the Automatic Switch Box due to missing back-up fuse.To limit a possible short-circuit current from the power distribution grid and to protect the cables in the Automatic Switch Box, a fuse between feed-in meter and the Automatic Switch Box is necessary.

• Install a line fuse between the Automatic Switch Box and the feed-in meter. Take the nominal current, the short-circuit switching capacities and the maximum cut-off current into account (see section 10 ”Technical Data”, page 53).



5.8 Connecting the Consumption Meter


Risk of lethal electric shock.The residual current devices between the power distribution grid and the Automatic Switch Box would lose its protective function due to the Backup system. Since the Backup system makes the tripping of the residual current device ineffective.

• Do not install a residual current device between the power distribution grid and the Automatic Switch Box.

Risk of electric shock due to connected neutral conductor when connecting in a TN system.The Backup system requires a grounded neutral conductor in order to form a TN grid in case of a grid failure and be able to apply the appropriate protective measures.

• Do not install any switching elements in the grounded neutral conductor to the Automatic Switch Box.

Risk of electric shock due to incorrect grounding of the PEN conductor on the grid side in case of a connection to a TN system.

• Ground the PEN conductor on the grid side within the house connection box (e.g. when the house connection box is linked to the equipotential bonding bar).

Destruction of the Automatic Switch Box due to missing back-up fuse.To limit a possible short-circuit current from the power distribution grid and to secure the cables in the Automatic Switch Box, a fuse between the consumption meter and the Automatic Switch Box is necessary.

• Insert a back-up fuse into the distribution. Take the nominal current, the short-circuit switching capacities and the maximum cut-off current into account (see section 10 ”Technical Data”, page 53).




1. Insert the cable (see section 5.2).2. Connect PE to terminal strip "AS-X1/ Load Meter". Take the labeling on the connection terminals

into account.3. If a TN system is present:

– Bridge the connection terminal "N-TT" and "N-TN" of the terminal strip "AS-X1/ Load Meter" by using a push-in type jumper bar. Take the label "TN-TT" in the Automatic Switch Box into account.

– Connect N to connection terminal "N-TN" of the terminal strip "AS-X1/ Load Meter". Take the label "TN-TT" in the Automatic Switch Box into account.

4. If a TT system is present:– If connection terminals "N-TT" and "N-TN" of the terminal strip "AS-X1/ Load Meter" are

bridged, remove the bridge.– Connect N to connection terminal "N-TT" of the terminal strip "AS-X1/ Load Meter". Take the

label "TN-TT" in the Automatic Switch Box into account. The second connection terminal"N-TT" is not assigned.

5. Connect L1, L2 and L3 to terminal strip "AS-X1/ Load Meter". Take the labeling on the connection terminals into account.



5.9 Connecting the Sunny BackupSunny Backup are fused with a C32 A line circuit breaker inside the Automatic Switch Box.Only connect one Sunny Backup (master) to the Automatic Switch Box M.Connect all 3 Sunny Backup (master, slave 1 and slave 2) to the Automatic Switch Box L.Connection terminals:

1. Insert all cables (see section 5.2).2. Connect master to the terminal strip "AS-X2/ SBU5000":

– Connect PE. Take the labeling on the connection terminals into account.– Connect N. Take the labeling on the connection terminals into account.– Connect L to the "L1" connection terminal.

3. Connect slave 1 to the terminal strip "AS-X2/ SBU5000":– Connect PE. Take the labeling on the connection terminals into account.– Connect N. Take the labeling on the connection terminals into account.– Connect L to the "L2" connection terminal.

4. Connect slave 2 to the terminal strip "AS-X2/ SBU5000":– Connect PE. Take the labeling on the connection terminals into account.– Connect N. Take the labeling on the connection terminals into account.– Connect L to the "L3" connection terminal.




5.10 Connecting External Signal for Battery Feed-InBy connecting a potential-free contact to the Automatic Switch Box, you can start or stop grid feed-in from the battery. You can connect for example a relay output of a ripple control receiver to the terminal strip "AS-X7/ Feed in Signal" which receives signals from the network operator.

Requirements:☐ The cross-section of the insulated conductor is 2.5 mm² maximum.☐ The potential-free contact is suited for a grid voltage of 230 V.


1. Insert the cable (see section 5.2).2. Connect PE to terminal strip "AS-X7/ Feed in Signal". Take the labeling on the connection

terminals into account.3. Connect the remaining insulated conductors to connection terminals "In" and "L1" of the terminal

strip "AS-X7/ Feed in Signal".

Approval from the network operatorThe responsible network operator must approve feed-in from the battery into the power distribution grid.




5.11 Connecting the GeneratorDepending on the purchase order, the Automatic Switch Box is equipped with terminal strip "1_1-X6/ Generator". You can connect a generator to this terminal strip.

Cable requirements: ☐ The cross-section of the insulated conductor has been selected due to the nominal power of the

generator.☐ If the generator has no output fuse, the cable is laid in such way that it is protected against

ground faults and short-circuits.☐ In case of longer cable routes, an additional fuse box is installed in proximity to the generator.


Bridge in terminal strip "1_1-X6/ Generator"The connection terminals "N" and "PE" of the terminal strip "1_1-X6/ Generator" are bridged.

Output fuse of the generator has an impact on the design of the cable in the PV plantNote that the design of the output fuse of the generator influences the design of the cable in the PV plant.




1. Remove filler-plug from the enclosure opening for M32x1.5 cable gland in the right flange plate.

2. Attach the M32x1.5 cable gland to the enclosure opening.3. Route the cable through the cable gland (see section 5.2).4. Connect PE to terminal strip "1_1-X6/ Generator". Take the labeling on the connection terminals

into account.5. Connect N to terminal strip "1_1-X6/ Generator". Take the labeling on the connection terminals

into account.6. If you use the Automatic Switch Box M, connect L to connection terminal "L1" of the terminal strip

"1_1-X6/ Generator".7. If you use the Automatic Switch Box L, connect L1, L2 and L3 to the terminal strip

"1_1-X6/ Generator". Take the labeling on the connection terminals into account.

Risk of lethal electric shock without an operating contact protection. • Connect the generator directly to the Automatic Switch Box.

or• Connect the generator to the side of the generator and to the side of the Automatic Switch

Box using a plug with protection against contact.



5.12 Connecting the Communication Cables

1. Loosen the screws of the upper right contact protection and remove the contact protection.

2. Remove the cable support sleeve from the cable entry.

3. Insert the communication cables through the cable entry into the Automatic Switch Box.

Displayed graphicAs an example, only the Automatic Switch Box L will be graphically displayed in this section. The procedure for connecting the Automatic Switch Box M is identical.



4. Insert the communication cables through the cable channel in the right enclosure wall to the control board.

5. Place the cable support sleeve around the communication cables.

6. Press the cable support sleeve into the cable entry.

7. If you use the Automatic Switch Box M, plug the red communication cable into socket "Mstr/L1 BackupVtgCur".

8. If you use the Automatic Switch Box L, plug a red communication cable into the sockets "Mstr/L1 BackupVtgCur", "Slv1/L2 BackupVtgCur" and "Slv2/L3 BackupVtgCur".

9. Plug the black communication cable into the socket "ComSyncIn".10. Mount the upper right and the lower contact protection.

6 Commissioning SMA Solar Technology AG


6 Commissioning6.1 Dimensioning the thermal fuse for loadsThe dimensioning of the thermal fuse depends on the device type and the size of the fuse in the distribution.Selectivity of the thermal fuse:In unfavorable constellations e.g. the same fuse value is connected twice in a row, it may be impossible to achieve selectivity between the lead fuses to be inserted and the upstream or downstream fuses. This is unavoidable due to the complexity of the Backup system with several feeding sources.

Automatic Switch Box M-201. If the rated current of the back-up fuse in the distribution is 40 A, insert a fuse link with a rated

current of 40 A into the fuse-switch-disconnector "AS-F5".2. If the rated current of the back-up fuse in the distribution is lower than 40 A:

– Insert a fuse link with the same rated current of the back-up fuse in the distribution into the fuse-switch-disconnector "AS-F5".

– Set the parameter "232.02 GdCurNom" to the value of the back-up fuse via the Sunny Backup. By doing so, you change the maximum current drawn from the grid.

3. If the rated current of the back-up fuse exceeds 40 A in the distribution:– Insert a fuse link with a maximum rated current of 40 A into the fuse-switch-disconnector

"AS-F5".– Insert a fuse with a maximum rated current of 40 A into the distribution.

Automatic Switch Box L-201. If the rated current of the back-up fuse is 63 A in the distribution, insert a fuse link with a rated

current of 63 A into the fuse-switch-disconnector "AS-F5".2. If the rated current of the back-up fuse in the distribution is lower than 63 A:

– Insert a fuse link with the same rated current of the back-up fuse in the distribution into the fuse-switch-disconnector "AS-F5".

– Set the parameter "232.02 GdCurNom" to the value of the back-up fuse via the Sunny Backup. By doing so, you change the maximum current drawn from the grid.

3. If the rated current of the back-up fuse exceeds 63 A in the distribution:– Insert a fuse link with a maximum rated current of 63 A into the fuse-switch-disconnector

"AS-F5".– Insert a fuse with a maximum rated current of 63 A into the distribution.

SMA Solar Technology AG 6 Commissioning


6.2 Dimensioning the thermal fuse for the generatorSelectivity of the thermal fuse:In unfavorable constellations e.g. the same fuse value is connected twice in a row, it may be impossible to achieve selectivity between the lead fuses to be inserted and the upstream or downstream fuses. This is unavoidable due to the complexity of the Backup system with several feeding sources.

• Dimension the thermal fuse in accordance with the requirements of the generator.• If you use the Automatic Switch Box M, insert a fuse link with maximum rated current of 40 A

into the fuse-switch-disconnector "1_1-F6". Use a fuse link of the size D02.Hint: a fuse link of the size D02 with a rated current of 40 A and appropriate headed sleeves are included in the scope of delivery.

• If you use the Automatic Switch Box L, insert a fuse link with maximum rated current of 50 A into the fuse-switch-disconnector "1_1-F6". Use a fuse link of the size D02.Hint: a fuse link of the size D02 with a rated current of 50 A and appropriate headed sleeves are included in the scope of delivery.

6 Commissioning SMA Solar Technology AG


6.3 Commission the Automatic Switch BoxRequirements:☐ Automatic Switch Box is securely mounted.☐ All cables are correctly connected.☐ Contact protections are mounted.☐ Thermal fuses are correctly dimensioned and inserted into the fuse socket.

1. Switch on the line circuit breaker "AS-F1" and the residual current device "AS-Q8" in the Automatic Switch Box.

2. Lock the Automatic Switch Box with the switch cabinet key.

3. Attach the provided sticker "Automatic emergency back-up power system present!" in or at the distribution to which the Backup system is connected. This sticker calls attention to the Backup system and is intended to ensure that the Backup system is also stopped during work that requires disconnection.

4. Switch on the line fuse between power distribution grid and Automatic Switch Box.5. Switch on the line circuit breaker/residual current device between the PV plant and the

Automatic Switch Box.

7. Commission the Backup system (see the manual of the Sunny Backup 5000).

Displayed graphicAs an example, only the Automatic Switch Box L will be graphically displayed in this section. The procedure and labeling of the line circuit breaker and the residual current device is identical for the Automatic Switch Box M.

6.Destruction of the Automatic Switch Box contactors due to wrong input voltage range.If the Backup system is operated outside the specified input voltage range, the Backup system will turn out.

• If the Automatic Switch Box is equipped with contactors for a higher input voltage range, set the grid voltage on the Sunny Backup as follows:– Set the parameter "232.01 GdVtgMin" to 195.5 V. By doing so, you change the

minimum grid voltage.– Set the parameter "232.02 GdVtgMax" to 260 V. By doing so, you change the

maximum grid voltage.

SMA Solar Technology AG 7 Disconnecting the Automatic Switch Box from voltage sources


7 Disconnecting the Automatic Switch Box from voltage sources

1. Decommission the Backup system (see the manual of the Sunny Backup 5000). 2. Switch off the line fuse between feed-in meter and Automatic Switch Box and between

consumption meter and Automatic Switch Box and secure against re-connection.3. Switch off the line circuit breaker/residual current device between the PV plant and the

Automatic Switch Box and secure against re-connection.4. Open the Automatic Switch Box with the switch cabinet key.5. Switch off the line circuit breaker "AS-F1", the residual current device "AS-Q8" and the fuse-

switch-disconnector "F6 (Generator)" in the Automatic Switch Box.6. Ensure that no voltage is present.7. Cover or shield any adjacent voltage-carrying parts.

8 Maintenance and Cleaning SMA Solar Technology AG


8 Maintenance and CleaningThe Automatic Switch Box must be maintained and, if necessary, cleaned at regular intervals. SMA Solar Technology AG recommends to carry out particular maintenance work every 12 months. Note that the maintenance interval is influenced by the installation site and the ambient conditions.If the Automatic Switch Box is used in a TN system, the operational grounding resistance needs to be checked every 5 years.

Maintaining the Automatic Switch Box• Check interior of the Automatic Switch Box for dirt, moisture and water penetration.

– If necessary, clean the Automatic Switch Box and take appropriate actions.• Check all connections to ensure that they are securely in place.

– If necessary, re-connect the cables to the connection terminals.• Check cable insulations, connection terminals and thermal fuses for discoloration.

– If external cabling (e.g. cables leading to loads, PV plant, generator etc.) is discolored, exchange the cables.

– If interior cabling (e.g. cables leading to contactors or thermal fuses) is discolored, contact the SMA Serviceline.

Checking the operational grounding resistance1. Disconnect the Automatic Switch Box from voltage sources (see section 7).2. Measure the resistance value between the connection terminals "N" of the terminal strips

"AS-X2/ SBU 5000" and "GND (PE)" of the terminal strip "AS-X8" with a test equipment having an overvoltage category of at least 3.☑ The resistance is between 225 ohm and 275 ohm.✖ The resistance is smaller than 225 ohm or larger than 275 ohm?

The N-PE resistance is defective.• Contact the SMA Serviceline.

SMA Solar Technology AG 9 Decommissioning


9 Decommissioning9.1 Dismantling the Automatic Switch Box

1. Disconnect the Automatic Switch Box from voltage sources (see section 7).2. Loosen the screws of the upper right contact

protection and remove the contact protection.

3. Loosen the screws of the lower contact protection and remove the contact protection.

4. Remove all cables from the connection terminals.5. Remove the upper and lower contact protection.6. Lock the Automatic Switch Box with the switch cabinet key.

Displayed graphicsAs an example, only the Automatic Switch Box L will be graphically displayed in this section. The procedure for the Automatic Switch Box M is identical.

Risk of injury due to the heavy weight of the Automatic Switch Box.• Take the weight of the Automatic Switch Box into account (see section 10 ”Technical

Data”, page 53).

9 Decommissioning SMA Solar Technology AG


7. Remove the Automatic Switch Box from the fixing screws.

9.2 Storing the Automatic Switch BoxRequirements for the storage location:☐ The storage location is dry.☐ The ambient temperature is between − 25 °C and +55 °C.☐ When storing up to a maximum of 24 hours, the ambient temperature is +70 °C maximum.

9.3 Disposing of the Automatic Switch Box• Dispose of the Automatic Switch Box in accordance with the applicable disposal regulations for

electronic waste.

SMA Solar Technology AG 10 Technical Data


10 Technical Data10.1 Automatic Switch Box M-20General DataNumber of phases 1-phaseNominal voltage range 187 V … 253 VNominal voltage range in case of higher input voltage range*

* optional

195.5 V … 260 V

Nominal frequency range 45 Hz … 55 HzNumber of Sunny Backup to be connected 1Permitted grid structure TN-C/TTWidth x height x depth 550 mm x 950 mm x 225 mmWeight 51 kgMaximum altitude above MSL 3 000 mProtection rating of enclosure**

** according to IEC 60529

IP 54Protection rating of inner protective cover** IP 20Protection class***

*** according to IEC 417

IIEMC environment A/BEC Declaration of Conformity YesAutomatic disconnection unit****

**** according to DIN VDE 0126-1-1

Yes, in combination with Sunny Backup 5000

Inner subdivision*****

***** according to IEC 60439-1

Structure 1 (no subdivision)Maximum prospective short-circuit current of grid connection

25 kA

10 Technical Data SMA Solar Technology AG


Rated insulation voltage

Load connection

Consumption meter connection

Switch cabinet wiring 2.5 kV AC230 V AC terminals on control board 1.7 kV DCCommunication ports on control board 500 V DC

Nominal power at 35 °C 7.4 kWNominal current with grid operation per phase at 35 °C 32 APower for 30 minutes at 35 °C 8.9 kWCurrent with grid operation per phase for 30 minutes at 35 °C

38 A

Maximum cross-section of the insulated conductor to be connected

16 mm²

Stripping length of the insulated conductors 18 mm … 20 mmMaximum fuse link to be used D02Maximum rated current of the fuse link 40 A

Nominal power at 35 °C 7.4 kWNominal current at 35 °C 32 APower for 30 minutes at 35 °C 8.9 kWCurrent with grid operation per phase for 30 minutes at 35 °C

38 A

Maximum cross-section of the insulated conductor to be connected

16 mm²

Stripping length of the insulated conductors 18 mm … 20 mmMaximum rated short-circuit current 10 kAMaximum nominal current of the back-up fuse 40 AShort-circuit current switch-off capability of the back-up fuse

≥ 25 kA

Cut-off current of back-up fuse ≤ 17 kA



PV plant/feed-in meter connection

Sunny Backup connection

Generator connection

Nominal power at 35 °C 5.7 kWNominal current at 35 °C 25 APower for 30 minutes at 35 °C 6.8 kWCurrent for 30 minutes at 35 °C 30 AMaximum cross-section of the insulated conductor to be connected

6 mm²


≥ 25 kA


Nominal power at 35 °C 5 kWNominal current at 35 °C 22 AMaximum cross-section of the insulated conductor to be connected

6 mm²

Stripping length of the insulated conductors 13 mm … 15 mmFuse C 32 A line circuit breaker

Nominal power at 35 °C 7.4 kWNominal current at 35 °C 32 APower for 30 minutes at 35 °C 8.9 kWCurrent for 30 minutes at 35 °C 38 AMaximum cross-section of the insulated conductor to be connected

16 mm²

Stripping length of the insulated conductors 18 mm … 20 mmMaximum fuse link to be used D02Maximum rated current of the fuse link 40 AMaximum rated short-circuit current 10 kA



Feed in signal connection

Internal consumption

Climatic Conditions

Nominal AC voltage range 195.5 V … 264 VMaximum cross-section of the insulated conductor to be connected

2.5 mm²

Stripping length of the insulated conductors 10 mm … 12 mm

Internal consumption during the day 21 WInternal consumption at night 16 W

Operating temperature range*

* At an ambient temperature of 35 °C, take derating into account.

− 25 °C … +50 °CAir humidity 0 % … 100 %



10.2 Automatic Switch Box L-20General Data

Rated insulation voltage

Number of phases 3-phaseNominal voltage range 187 V … 253 VNominal voltage range in case of higher input voltage range*

* optional

195.5 V … 260 V

Nominal frequency range 45 Hz … 55 HzNumber of Sunny Backup to be connected 3Permitted grid structure TN-C/TTWidth x height x depth 800 mm x 950 mm x 225 mmWeight 70 kgMaximum altitude above MSL 3 000 mProtection rating of enclosure**

** according to IEC 60529

IP 54Protection rating of inner protective cover** IP 20Protection class***

*** according to IEC 417

IIEMC environment A/BEC Declaration of Conformity YesAutomatic disconnection unit****

**** according to DIN VDE 0126-1-1

Yes, in combination with Sunny Backup 5000

Inner subdivision*****

***** according to IEC 60439-1

Structure 1 (no subdivision)Maximum prospective short-circuit current of grid connection

25 kA

Switch cabinet wiring 2.5 kV AC230 V AC terminals on control board 1.7 kV DCCommunication ports on control board 500 V DC



Load connection

Consumption meter connection

Nominal power at 35 °C 35 kWNominal current with grid operation per phase at 35 °C 50 APower for 30 minutes at 35 °C 41 kWCurrent for 30 minutes at 35 °C 50 AMaximum cross-section of the insulated conductor to be connected

16 mm²

Stripping length of the insulated conductors 18 mm … 20 mmMaximum fuse link to be used D02Maximum rated current of the fuse link 63 A

Nominal power at 35 °C 35 kWNominal current per phase at 35 °C 50 APower for 30 minutes at 35 °C 41 kWCurrent for 30 minutes at 35 °C 50 AMaximum cross-section of the insulated conductor to be connected

16 mm²


≥ 25 kA




PV plant/feed-in meter connection

Sunny Backup connection

Generator connection

Nominal power at 35 °C 28 kWNominal current per phase at 35 °C 40 APower for 30 minutes at 35 °C 33 kWCurrent per phase for 30 minutes at 35 °C 48 AMaximum cross-section of the insulated conductor to be connected

16 mm²


≥ 25 kA


Nominal power at 35 °C 15 kWNominal current per phase at 35 °C 22 AMaximum cross-section of the insulated conductor to be connected

6 mm²

Stripping length of the insulated conductors 13 mm … 15 mmFuse C 32 A line circuit breaker

Nominal power at 35 °C 27.6 kWNominal current per phase at 35 °C 40 APower for 5 minutes at 35 °C 33 kWCurrent per phase for 5 minutes at 35 °C 40 AMaximum cross-section of the insulated conductor to be connected

16 mm²

Stripping length of the insulated conductors 18 mm … 20 mmMaximum rated short-circuit current 10 kAMaximum fuse link to be used D02Maximum rated current of the fuse link 50 A



Feed in signal connection

Internal consumption

Climatic Conditions

Nominal AC voltage range 195.5 V … 264 VMaximum cross-section of the insulated conductor to be connected

2.5 mm²

Stripping length of the insulated conductors 10 mm … 12 mm

Internal consumption during the day 114 WInternal consumption at night 69 W

Operating temperature range*

* At an ambient temperature of 35 °C, take derating into account.

− 25 °C … +50 °CAir humidity 0 % … 100 %

SMA Solar Technology AG 11 Contact


11 ContactIf you have technical problems concerning our products, contact the SMA Serviceline. We require the following information in order to provide you with the necessary assistance:

• Device type (see "Type" on the type label)• Serial number (see "Serial No." on the type label)• Article number (see "Art No." on the type label)• Type and number of the connected Sunny Backup• Type and number of connected PV inverters• Type and number of connected loads• If available: type of connected generators

SMA Solar Technology AG Sonnenallee 134266 Niestetal, Germanywww.SMA.de

SMA ServicelineTel. +49 561 9522 399Fax: +49 561 9522 4697E-mail: [email protected]

Notes SMA Solar Technology AG


SMA Solar Technology AG Legal Restrictions


The information contained in this document is the property of SMA Solar Technology AG. Publishing its content, either partially or in full, requires the written permission of SMA Solar Technology AG. Any internal company copying of the document for the purposes of evaluating the product or its correct implementation is allowed and does not require permission.

Exclusion of liabilityThe general terms and conditions of delivery of SMA Solar Technology AG shall apply.The content of these documents is continually checked and amended, where necessary. However, discrepancies cannot be excluded. No guarantee is made for the completeness of these documents. The latest version is available online at www.SMA.de or from the usual sales channels.Guarantee or liability claims for damages of any kind are excluded if they are caused by one or more of the following: • Damages during transportation• Improper or inappropriate use of the product• Operating the product in an unintended environment• Operating the product whilst ignoring relevant, statutory safety regulations in the deployment location• Ignoring safety warnings and instructions contained in all documents relevant to the product• Operating the product under incorrect safety or 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 unforeseen calamity or force majeureThe use of supplied software produced by SMA Solar Technology AG is subject to the following conditions:• SMA Solar Technology AG rejects any liability for direct or indirect damages arising from the use of software developed by

SMA Solar Technology AG. This also applies to the provision or non-provision of support activities.• Supplied software not developed by SMA Solar Technology AG is subject to the respective licensing and liability agreements

of the manufacturer.

SMA Factory WarrantyThe current guarantee conditions come enclosed with your device. These are also available online at www.SMA.de and can be downloaded or are available on paper from the usual sales channels if required.

TrademarksAll trademarks are recognized even if these are not marked separately. Missing designations do not mean that a product or brand is not a registered trademark.The Bluetooth® word mark and logos are registered trademarks owned by Bluetooth SIG, Inc. and any use of such marks by SMA Solar Technology AG is under license.SMA Solar Technology AGSonnenallee 134266 NiestetalGermanyTel. +49 561 9522-0Fax +49 561 9522-100www.SMA.deE-Mail: [email protected]© 2004 to 2011 SMA Solar Technology AG. All rights reserved

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