SMA NR-STP-DC-CON-1012 Operating and safety instructions

DCCON-STPTL10-RM-xx-10 | 120589-00.01 | Version 1.0
Spare-part set "DC assembly" for
SunnyTripower 8000TL / 10000TL /
12000TL / 15000TL / 17000TL
NR-STP-DC-CON-1012 / NR3-STP-DCCON1012 / NR-STP-
DC-CON / NR3-STP-DC-CON

DCCON-STPTL10-RM-xx-102
ENGLISH Replacement Manual................................................................3
DEUTSCH Austauschanleitung.................................................................26
ČEŠTINA Návod kvýměně ....................................................................51
ΕΛΛΗΝΙΚΑ Οδηγίες αντικατάστασης........................................................74
ESPAÑOL Instrucciones para la sustitución............................................99
FRANÇAIS Instructions de remplacement............................................. 123
ITALIANO Istruzioni per la sostituzione ............................................... 147
NEDERLANDS Vervangingshandleiding..................................................... 171
PORTUGUÊS Manual de substituição ....................................................... 195
ROMÂNĂ Instrucțiuni de schimb .......................................................... 219
TÜRKÇE Değiştirme kılavuzu ............................................................. 243
Contact...................................................................................267

Legal Provisions
SMA Solar Technology AG
Replacement Manual DCCON-STPTL10-RM-xx-10 3
Legal Provisions
The information contained in these documents is the property of SMA Solar Technology AG. No
part of this document may be reproduced, stored in a retrieval system, or transmitted, in any form or
by any means, be it electronic, mechanical, photographic, magnetic or otherwise, without the prior
written permission of 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 Solar Technology AG makes no representations or warranties, express or implied, with
respect to this documentation or any of the equipment and/or software it may describe, including
(with no limitation) any implied warranties of utility, merchantability, or fitness for any particular
purpose. All such representations or warranties are expressly disclaimed. Neither SMA Solar
Technology AG nor its distributors or dealers shall be liable for any indirect, incidental, or
consequential damages under any circumstances.
The exclusion of implied warranties may not apply in all cases under some statutes, and thus the
above exclusion may not apply.
Specifications are subject to change without notice. Every attempt has been made to make this
document complete, accurate and up-to-date. Readers are cautioned, however, that product
improvements and field usage experience may cause SMA Solar Technology AG to make changes
to these specifications without advance notice or per contract provisions. SMA Solar Technology
AG shall not be responsible for any damages, including indirect, incidental or consequential
damages, caused by reliance on the material presented, including, but not limited to, omissions,
typographical errors, arithmetical errors or listing errors in the content material.
Trademarks
All trademarks are recognized, even if not explicitly identified as such. Missing designations do not
mean that a product or brand is not a registered trademark.
SMA Solar Technology AG
Sonnenallee 1
34266 Niestetal
Germany
Tel. [phone]
Fax [phone]
www.SMA.de
Email: [email protected]
As of: 3/31/2020
Copyright © 2020 SMA Solar Technology AG. All rights reserved.
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Table of Contents SMA Solar Technology AG
Replacement ManualDCCON-STPTL10-RM-xx-104
Table of Contents
1 Information on this Document................................................. 5
1.1 Validity........................................................................................................................ 5
1.2 Target Group.............................................................................................................. 5
1.3 Content and Structure of this Document ................................................................... 5
1.4 Symbols in the Document .......................................................................................... 5
1.5 Levels of Warning Messages.................................................................................... 6
1.6 Typographical Elements in the Document ................................................................ 6
1.7 Designations in the Document................................................................................... 7
2 Safety ........................................................................................ 7
2.1 Intended Use .............................................................................................................. 7
2.2 IMPORTANT SAFETY INSTRUCTIONS.................................................................... 7
3 Scope of Delivery..................................................................... 10
4 Overview of the Assembly...................................................... 11
5 Disconnecting the Inverter from Voltage Sources................. 12
6 Removing the DC Assembly .................................................... 16
7 Installing the DC Assembly...................................................... 20
8 Recommissioning the Inverter................................................. 23
9 Returning and Disposing of the Defective Assembly ............ 25
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1 Information on this Document
SMA Solar Technology AG
Replacement Manual DCCON-STPTL10-RM-xx-10 5
1 Information on this Document
1.1 Validity
This document is valid for:
• NR-STP-DC-CON-1012
• NR3-STP-DCCON1012
• NR-STP-DC-CON
• NR3-STP-DC-CON
1.2 Target Group
The tasks described in this document must only be performed by qualified persons. Qualified
persons must have the following skills:
• Within the SMA factory warranty, participation in an SMA training course is mandatory for
carrying out the activities described in this document. The type of training and the media used
may vary from country to country. The type and method of training can therefore vary from
country to country, but must have been completed before the service is provided.
• Outside the SMA factory warranty, SMA Solar Technology AG recommends participation in
an SMA training course to perform the activities described in this document. This ensures the
quality requirements for proper replacement of assemblies. The type of training and the media
used may vary from country to country.
• Knowledge of how to safely disconnect SMA inverters
• Knowledge of how an inverter works and is operated
• Training in how to deal with the dangers and risks associated with installing, repairing and
using electrical devices and installations
• Training in the installation and commissioning of electrical devices and installations
• Knowledge of all applicable laws, standards and directives
• Knowledge of and compliance with this document and all safety information
1.3 Content and Structure of this Document
This document describes how to replace components.
Illustrations in this document are reduced to the essential information and may deviate from the real
product.
1.4 Symbols in the Document
Symbol Explanation
Information that is important for a specific topic or goal, but is not safety-rele-
vant
☐
Indicates a requirement for meeting a specific goal
☑
Desired result
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1 Information on this Document SMA Solar Technology AG
Replacement ManualDCCON-STPTL10-RM-xx-106
Symbol Explanation
✖
A problem that might occur
Example
1.5 Levels of Warning Messages
The following levels of warning messages may occur when handling the product.
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 which, if not avoided, can result in property damage.
1.6 Typographical Elements in the Document
Typography Use Example
bold • Messages
• Terminals
• Elements on a user interface
• Elements to be selected
• Elements to be entered
• Connect the insulated
conductors to the terminals
X703:1 to X703:6.
• Enter 10 in the field
Minutes.
>• Connects several elements to be
selected
• Select Settings > Date.
[Button]
[Key]
• Button or key to be selected or
pressed
• Select [Enter].
# • Placeholder for variable
components (e.g., parameter
names)
• Parameter WCtlHz.Hz#
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2 Safety
SMA Solar Technology AG
Replacement Manual DCCON-STPTL10-RM-xx-10 7
1.7 Designations in the Document
Complete designation Designation in this document
DC assembly DC assembly, DC-CON, assembly
2 Safety
2.1 Intended Use
This spare-part set enables the replacement of DC assemblies (DC-CON) in SMA inverters.
The product must only be installed in the following SMA inverters:
Spare parts set Assembly to be replaced Inverters
NR-STP-DC-CON-1012
NR3-STP-DCCON1012
STP-DC-CON-1012(-xx.xx) STP8000TL-10
STP10000TL-10
STP12000TL-10
NR-STP-DC-CON
NR3-STP-DC-CON
STP-DC-CON(-xx.xx) STP15000TL-10
STP17000TL-10
Use SMA products only in accordance with the information provided in the enclosed
documentation and with the locally applicable laws, regulations, standards and directives. Any
other application may cause personal injury or property damage.
Alterations to the SMA products, 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 in most cases terminate the operating license. 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 the
intended use.
The enclosed documentation is an integral part of this product. Keep the documentation in a
convenient, dry place for future reference and observe all instructions contained therein.
This document does not replace and is not intended to replace any local, state, provincial, federal
or national laws, regulations or codes applicable to the installation, electrical safety and use of the
product. SMA Solar Technology AG assumes no responsibility for the compliance or non-
compliance with such laws or codes in connection with the installation of the product.
If the replacement and all activities stated in this document are carried out by persons who are not
qualified within the meaning of this documentation, this will void the guarantee and warranty claims
and in most cases terminate the operating permit. SMA Solar Technology AG shall not be held
liable for any damage caused directly or indirectly due to such changes by unauthorized persons.
2.2 IMPORTANT SAFETY INSTRUCTIONS
SAVE THESE INSTRUCTIONS
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2 Safety SMA Solar Technology AG
Replacement ManualDCCON-STPTL10-RM-xx-108
This section contains safety information that must be observed at all times when working.
The product has been designed and tested in accordance with international safety requirements. As
with all electrical or electronical devices, there are residual risks despite careful construction. 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.
DANGER
Danger to life due to electric shock when live components or cables of the
inverter are touched
High voltages are present in the conductive components or cables of the inverter. Touching live
parts and cables of the inverter results in death or lethal injuries due to electric shock.
• Disconnect the inverter from voltage sources and make sure it cannot be reconnected
before working on the device.
• Wear suitable personal protective equipment for all work on the product.
• Do not touch non-insulated parts or cables.
DANGER
Danger to life due to electric shock when live components or DC cables are
touched
When exposed to light, the PV modules generate high DC voltage which is present in the DC
cables. Touching live DC cables results in death or lethal injuries due to electric shock.
• Do not touch non-insulated parts or cables.
• Disconnect the inverter from voltage sources and make sure it cannot be reconnected
before working on the device.
• Do not disconnect the DC connectors under load.
• Wear suitable personal protective equipment for all work on the product.
DANGER
Danger to life due to electric shock when touching live system components in
case of a ground fault
If a ground fault occurs, parts of the system may still be live. Touching live parts and cables
results in death or lethal injuries due to electric shock.
• Disconnect the inverter from voltage sources and make sure it cannot be reconnected
before working on the device.
• Touch the cables of the PV array on the insulation only.
• Do not touch any parts of the substructure or frame of the PV array.
• Do not connect PV strings with ground faults to the inverter.
• Once disconnected from voltage sources, wait five minutes before touching any parts of the
PV system or the inverter.
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2 Safety
SMA Solar Technology AG
Replacement Manual DCCON-STPTL10-RM-xx-10 9
WARNING
Danger to life due to fire or explosion
In rare cases, an explosive gas mixture can be generated inside the inverter under fault
conditions. In this state, switching operations can cause a fire inside the inverter or explosion.
Death or lethal injuries due to hot or flying debris can result.
• Ensure that unauthorized persons have no access to the inverter.
• Do not remove the Electronic Solar Switch (ESS) from the inverter.
• Disconnect the PV array from the inverter via an external disconnection device. If there is no
disconnecting device present, wait until no more DC power is applied to the inverter.
• Disconnect the AC circuit breaker, or keep it disconnected in case it has already tripped,
and secure it against reconnection.
• Only perform work on the inverter (e.g., troubleshooting, repair work) when wearing
personal protective equipment for handling of hazardous substances (e.g., safety gloves,
eye and face protection, respiratory protection).
WARNING
Risk of injury due to toxic substances, gases and dusts.
In rare cases, damages to electronic components can result in the formation of toxic substances,
gases or dusts inside the inverter. Touching toxic substances and inhaling toxic gases and dusts
can cause skin irritation, burns or poisoning, trouble breathing and nausea.
• Only perform work on the inverter (e.g., troubleshooting, repair work) when wearing
personal protective equipment for handling of hazardous substances (e.g., safety gloves,
eye and face protection, respiratory protection).
• Ensure that unauthorized persons have no access to the inverter.
WARNING
Danger to life due to electric shock from destruction of the measuring device
due to overvoltage
Overvoltage can damage a measuring device and result in voltage being present in the
enclosure of the measuring device. Touching the live enclosure of the measuring device results in
death or lethal injuries due to electric shock.
• Only use measuring devices with a DC input voltage range of 1000V or higher.
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.
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3 Scope of Delivery SMA Solar Technology AG
Replacement ManualDCCON-STPTL10-RM-xx-1010
NOTICE
Damage to the enclosure seal in subfreezing conditions
If you open the inverter when temperatures are below freezing, the enclosure seals can be
damaged. This can lead to moisture entering the inverter.
• Only open the inverter if the ambient temperature is not below -5°C.
• If a layer of ice has formed on the enclosure seal when temperatures are below freezing,
remove it prior to opening the inverter (e.g. by melting the ice with warm air).
NOTICE
Damage to the inverter due to sand, dust and moisture
Sand, dust and moisture penetration can damage the inverter, thus impairing its functionality.
• Only open the inverter if the humidity is within the thresholds and the environment is free of
sand and dust.
• Do not open the inverter during a dust storm or precipitation.
• Close the inverter in case of interruption of work or after finishing work.
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.
Grounding conductor test prior to recommissioning
Prior to recommissioning SMA inverters after the installation of SMA components or power
assemblies which cannot be replaced intuitively, ensure that the grounding conductor in the
inverter is correctly connected. The function of the grounding conductor must be ensured and
all locally applicable laws, standards and directives must be observed.
Observe superordinate standards
The repair work on devices and the consideration and application of other standards which
correspond to a superordinate standard is the responsibility of the qualified person performing
the work. Unauthorized alterations will void guarantee and warranty claims and in most cases
terminate the operating license. SMA Solar Technology AG shall not be held liable for any
damage caused by such changes.
3 Scope of Delivery
Check the scope of delivery for completeness and any externally visible damage. Contact the
Service if the delivery is incomplete or damaged.
Quantity Designation
1 DC assembly
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4 Overview of the Assembly
SMA Solar Technology AG
Replacement Manual DCCON-STPTL10-RM-xx-10 11
Quantity Designation
3 Printed circuit board mounting clip (diameter:
11mm)
13 Pan head screw M4x15
1 Replacement Manual
4 Overview of the Assembly
B
A
Figure 1 : Position in the inverter
C
Figure 2 : Position in the inverter
Position Designation
A EMC filter assembly (DC-EMV)
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5 Disconnecting the Inverter from Voltage Sources SMA Solar Technology AG
Replacement ManualDCCON-STPTL10-RM-xx-1012
Position Designation
B String fuse assembly (ESF)
C DC assembly (DC-CON)
5 Disconnecting the Inverter from Voltage Sources
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.
WARNING
Danger to life due to electric shock from destruction of the measuring device
due to overvoltage
Overvoltage can damage a measuring device and result in voltage being present in the
enclosure of the measuring device. Touching the live enclosure of the measuring device results in
death or lethal injuries due to electric shock.
• Only use measuring devices with a DC input voltage range of 1000V or higher.
Procedure:
1. Disconnect the circuit breaker from all three line conductors and secure against reconnection.
2. If an additional DC load-break switch is available, switch off the DC load-break switch and
secure against re-connection.
3. If the multifunction relay is used, switch off any supply voltage to the load.
4. DANGER
Danger to life due to electric shock and electric arc when disconnecting
the ESS in the event of an error
If an acoustic signal sounds, the inverter is in error mode. In this case, the removal of the
ESS results in death or serious injury due to electric shock and electric arc.
• Test whether there is an acoustic signal.
• If an acoustic signals sounds and the display shows an error message that prohibits
removing the ESS, wait until dark. The ESS can only be removed once it is dark.
• If no acoustic signal sounds and the display does not show an error message, remove
the ESS.
5. Wait until the LEDs and the display have gone out.
6. Release all six screws of the lower enclosure lid
using an Allen key (AF3).
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5 Disconnecting the Inverter from Voltage Sources
SMA Solar Technology AG
Replacement Manual DCCON-STPTL10-RM-xx-10 13
7. Flip the lower enclosure lid up and remove it.
8. 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.
9. Use an appropriate measuring device to ensure that
no voltage is present at the AC terminal block
between L1 and N, L2 and N, and L3 and N.
Insert the test probe into each round opening of the
terminal.
10. Use an appropriate measuring device to ensure that no voltage is present at the AC terminal
block between L1 and PE, L2 and PE, and L3 and PE. Insert the test probe into each round
opening of the terminal.
11. If you are using the multifunction relay, ensure that no voltage is present between any of the
terminals on the multifunction relay and PE on the AC terminal block.
12. Use a current clamp to ensure that no current is present in the DC cables.
13. Note the position of the DC connector in order to be able to connect it again later in the same
position.
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5 Disconnecting the Inverter from Voltage Sources SMA Solar Technology AG
Replacement ManualDCCON-STPTL10-RM-xx-1014
14. DANGER
Danger to life due to electric shock when touching exposed DC
conductors or DC plug contacts if the DC connectors are damaged or
loose
The DC connectors can break or become damaged, become free of the DC cables, or no
longer be connected correctly if the DC connectors are released and disconnected
incorrectly. This can result in the DC conductors or DC plug contacts being exposed.
Touching live DC conductors or DC plug connectors will result in death or serious injury due
to electric shock.
• Wear insulated gloves and use insulated tools when working on the DC connectors.
• Ensure that the DC connectors are in perfect condition and that none of the DC
conductors or DC plug contacts are exposed.
• Carefully release and remove the DC connectors as described in the following.
15. Release and remove the DC connectors. To do so,
insert a flat-blade screwdriver or an angled
screwdriver (blade width: 3.5mm) into one of the
side slots and pull the DC connectors out. When
doing so, do not lever the DC connectors out, but
insert the tool into one of the side slots only to
release the locking mechanism, and do not pull on
the cable.
1
2
16. Ensure that no voltage is present at the DC inputs of the inverter.
17. Disconnect the communication assembly from the
inverter. To do so, release and remove the ribbon
cable from the communication assembly.
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5 Disconnecting the Inverter from Voltage Sources
SMA Solar Technology AG
Replacement Manual DCCON-STPTL10-RM-xx-10 15
18. 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.
• Unscrew all screws of the upper enclosure lid (AF4) and remove the upper enclosure
lid.
19. Discharge the DC link in the following order. For this purpose use, for example, a 2-pole
voltage detector that does not have its own voltage source.
• Contact point DC+ and contact point DC‒
• Contact point DC+ and contact point PE
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6 Removing the DC Assembly SMA Solar Technology AG
Replacement ManualDCCON-STPTL10-RM-xx-1016
• Contact point DC‒ and contact point grounding conductor
20. 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.
6 Removing the DC Assembly
1. Disconnect the inverter from all voltage sources (see Section5, page12).
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6 Removing the DC Assembly
SMA Solar Technology AG
Replacement Manual DCCON-STPTL10-RM-xx-10 17
2. Release all 4 screws of the DC protective cover
using an Allen key (AF3) and remove the DC
protective cover.
3. Disconnect the cable connections:
• Remove all cables connected to the assembly
of the EMC filtering device on the string-fuse
assembly.
• Remove the 8-pole plug on the assembly of the
EMC filtering device.
4. Remove the disconnected cables:
• Pry the cable glands out sideways using a flat-
blade screwdriver.
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6 Removing the DC Assembly SMA Solar Technology AG
Replacement ManualDCCON-STPTL10-RM-xx-1018
• Pull out the cables with cable glands
downwards.
5. Remove the ESS pin connector. To do so, loosen the
clamping clip of the ESS pin connector using a flat-
blade screwdriver and pull out the ESS pin
connector.
6. Remove the marked connecting screws on the
assembly of the EMC filtering device (TX20).
7. Remove the assembly of the EMC filtering device
from the fixing domes and pull out. Tip: Use a socket
wrench (AF4) to unlock the fixing domes.
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6 Removing the DC Assembly
SMA Solar Technology AG
Replacement Manual DCCON-STPTL10-RM-xx-10 19
8. Open the ferrite core terminal and remove the
ribbon cable from the string-fuse assembly.
9. Pry out the cable glands of the removed cables
sideways using a flat-blade screwdriver and pull out
downwards together with the cables.
10. Pull out the clamping bracket of the DC terminal
block.
11. Remove all the connecting screws of the DC
assembly (TX20).
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7 Installing the DC Assembly SMA Solar Technology AG
Replacement ManualDCCON-STPTL10-RM-xx-1020
12. Release the DC assembly from the fixing domes.
13. Remove the DC assembly through the cutout for the
DC plugs.
14. Loosen the connection of the 8-pole signal cable on the DC assembly. Keep the cable in a
safe place for later use with the new DC assembly.
7 Installing the DC Assembly
1. Check whether the PCB retaining clips (2, 3 and 4) are still inserted. If not, insert the 3 PCB
retaining clips from the scope of delivery.
• Check whether both external PCB retaining
clips (1 and 5) of the DC-EMC assembly are
still inserted in the enclosure. If not, remove
them from the assembly deinstalled and attach
them to the enclosure.
12345
2. Plug the contact dome retainer with the locking tabs
onto the DC assembly.
3. Insert the 8-pole signal cable into the corresponding connection on the DC assembly. Ensure
that the cable snaps properly into place.
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