SMA NR-STP90-5-AST Operating and safety instructions

SUNNY BOY
STPTL-20-AST-RM-xx-10 | Version 1.0
Spare-Part Set "Power Assembly" for
SunnyTripower 5000TL / 6000TL /
7000TL / 8000TL / 9000TL / 10000TL /
12000TL
NR-STP90-5-AST / NR-STP90-6-AST / NR-STP90-7-AST / NR-
STP90-8-AST / NR-STP90-AST / NR-STP100-AST / NR-STP120-AST

STPTL-20-AST-RM-xx-102
ENGLISH Replacement Manual................................................................3
DEUTSCH Austauschanleitung.................................................................20
ČEŠTINA Návod kvýměně ....................................................................38
ΕΛΛΗΝΙΚΑ Οδηγίες αντικατάστασης........................................................55
ESPAÑOL Instrucciones para la sustitución............................................74
FRANÇAIS Instructions de remplacement................................................92
ITALIANO Istruzioni per la sostituzione ............................................... 110
NEDERLANDS Vervangingshandleiding..................................................... 127
PORTUGUÊS Manual de substituição ....................................................... 145
ROMÂNĂ Instrucțiuni de schimb .......................................................... 162
TÜRKÇE Değiştirme kılavuzu ............................................................. 179
Contact...................................................................................196

Legal Provisions
SMA Solar Technology AG
Replacement Manual STPTL-20-AST-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: 5/7/2020
Copyright © 2020 SMA Solar Technology AG. All rights reserved.
ENGLISH

Table of Contents SMA Solar Technology AG
Replacement ManualSTPTL-20-AST-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 Levels of Warning Messages.................................................................................... 5
1.5 Symbols in the Document .......................................................................................... 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.................................................................... 8
3 Component Overview ............................................................. 11
4 Scope of Delivery..................................................................... 11
5 Disconnecting the Inverter from Voltage Sources................. 12
6 Removing the AST Assembly................................................... 14
7 Installing the AST Assembly .................................................... 14
8 Recommissioning the Inverter................................................. 16
9 Performing the VAC Test.......................................................... 18
10 Returning and Disposing of the Defective Assembly ............ 19
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1 Information on this Document
SMA Solar Technology AG
Replacement Manual STPTL-20-AST-RM-xx-10 5
1 Information on this Document
1.1 Validity
This document is valid for:
• NR-STP90-5-AST (power assembly)
• NR-STP90-6-AST (power assembly)
• NR-STP90-7-AST (power assembly)
• NR-STP90-8-AST (power assembly)
• NR-STP90-AST (power assembly)
• NR-STP100-AST (power assembly)
• NR-STP120-AST (power assembly)
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 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.
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1 Information on this Document SMA Solar Technology AG
Replacement ManualSTPTL-20-AST-RM-xx-106
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.
1.5 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
✖
A problem that might occur
Example
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 STPTL-20-AST-RM-xx-10 7
1.7 Designations in the Document
Complete designation Designation in this document
Power assembly (AST) AST assembly, AST, assembly
2 Safety
2.1 Intended Use
This spare-part set enables the replacement of power assemblies (AST) in SMA inverters.
The product must only be installed in the following SMA inverters:
Spare parts set Inverter
NR-STP90-5-AST STP5000TL-20
NR-STP90-6-AST STP6000TL-20
NR-STP90-7AST STP7000TL-20
NR-STP90-8AST STP8000TL-20
NR-STP90-AST STP9000TL-20
NR-STP100-AST STP10000TL-20
NR-STP120-AST STP12000TL-20
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.
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2 Safety SMA Solar Technology AG
Replacement ManualSTPTL-20-AST-RM-xx-108
2.2 IMPORTANT SAFETY INSTRUCTIONS
SAVE THESE INSTRUCTIONS
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.
• After disconnection, wait 5 minutes until the capacitors have discharged.
• 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.
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2 Safety
SMA Solar Technology AG
Replacement Manual STPTL-20-AST-RM-xx-10 9
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.
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.
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2 Safety SMA Solar Technology AG
Replacement ManualSTPTL-20-AST-RM-xx-1010
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. Touching hot enclosure parts can
result in burn injuries.
• During operation, do not touch any parts other than the enclosure lid of the inverter.
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.
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