SMA STP 20-US-50 Sunny Tripower Inverter Installation Guide

SMA STP 20-US-50 Sunny Tripower Inverter

Product Information

SUNNY TRIPOWER X 20-US / 25-US / 30-US

The SUNNY TRIPOWER X 20-US / 25-US / 30-US are transformerless PV inverters with 3 MPP trackers that convert the direct current of the PV modules to grid- compliant, three-phase current and feed it into the utility grid. The product is intended for use in residential and industrial environments. It is suitable for indoor and outdoor use.
If the product is operated with a medium-voltage transformer, the low-voltage side must be configured in a star formation and the neutral point grounded (for information about the requirements of the medium-voltage transformer, consult the technical information Important Requirements for Medium-Voltage Transformers under www.SMA-Solar.com).
All components must remain within their permitted operating ranges and their installation requirements at all times. 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 SMA products, e.g., changes or modifications, are only permitted with the express written permission of and according to the instructions from SMA Solar Technology AG. Unauthorized alterations can be dangerous and lead to personal injury. In addition, an unauthorized alteration 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.

Product Usage Instructions

Qualified persons must perform the tasks described in this document. Qualified persons must have the following skills:

• Knowledge of electrical engineering and electronics
• Knowledge of safety regulations and guidelines for electrical systems
• Knowledge of the product and its intended use

When handling the product, the following levels of warning messages may occur:

• DANGER: Indicates a hazardous situation that, 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 that, if not avoided, could result in minor or moderate injury.
• NOTICE: Indicates a situation which, if not avoided, can result in property damage.
• Use the product 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.
• Do not make alterations to the product, e.g., changes or modifications, without the express written permission of and according to the instructions from SMA Solar Technology AG.
• Unauthorized alterations can be dangerous and lead to personal injury. In addition, an unauthorized alteration will void guarantee and warranty claims and in most cases terminate the operating license.

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.

SMA Warranty

• You can download the current warranty conditions from the Internet at www.SMA-Solar.com.

Software licenses

• The licenses for the installed software modules (open source) can be found in the user interface of the product.

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
• Phone +49 561 9522-0
• Fax +49 561 9522-100
• www.SMA.de
• E-mail:info@SMA.de
• Status: 2/6/2023
• Copyright © 2023 SMA Solar Technology AG. All rights reserved.

Information on this Document

Validity

This document is valid for:

• STP 20-US-50 (Sunny Tripower X 20-US)
• STP 25-US-50 (Sunny Tripower X 25-US)
• STP 30-US-50 (Sunny Tripower X 30-US)

Target Group

The tasks described in this document must only be performed by qualified persons. Qualified persons must have the following skills:

• 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

Content and Structure of this Document

• This document contains safety information as well as graphical instructions on installing and commissioning (see page 29). Observe all information and carry out the actions illustrated graphically in this document in the specified order.
• The latest version of this document and the comprehensive manual for installation, commissioning, configuration and decommissioning are to be found in PDF format and as eManual at www.SMA-Solar.com. You will find the QR code that links to the eManual on the title page of this document. You can also call up the eManual via the user interface of the product.
• Illustrations in this document are reduced to the essential information and may deviate from the real product.

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.

Symbols in the Document

Icon/Explanation

• Information that is important for a specific topic or goal, but is not safety-relevant
• The section in which the installation and commissioning process is illustrated graphically.

Safety

Intended Use

• The Sunny Tripower is a transformerless PV inverter, with 3 MPP trackers, that converts the direct current of the PV modules to grid-compliant, three-phase current and feeds it into the utility grid. The product is intended for use in residential and industrial environments.
• The product is suitable for indoor and outdoor use.
• If the product is operated with a medium-voltage transformer, the low-voltage side must be configured in a star formation and the neutral point grounded (for information about the requirements of the medium-voltage transformer, consult the technical information “Important Requirements for Medium-Voltage Transformers” under www.SMA-Solar.com).
• All components must remain within their permitted operating ranges and their installation requirements at all times.
• 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 SMA products, e.g., changes or modifications, are only permitted with the express written permission of and according to the instructions from SMA Solar Technology AG. Unauthorized alterations can be dangerous and lead to personal injury.
• In addition, an unauthorized alteration 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 appropriate.
• 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 any regional, state, provincial, federal or national laws, regulations or standards that apply 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.
• The type label must remain permanently attached to the product.

IMPORTANT SAFETY INSTRUCTIONS

• Keep the manual for future reference.
• 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 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 product from voltage sources and ensure it cannot be reconnected before working on the device.
• Only touch the cables of the PV modules on their insulation.
• 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.
• Ensure that no voltage is present and wait 5 minutes before touching any parts of the PV system or the product.

DANGER

• Danger to life due to electric shock in case of overvoltages and if surge protection is missing
• Overvoltages (e. g. in the event of a flash of lightning) can be further conducted into the building and to other connected devices in the same network via the network cables or other data cables if there is no surge protection. Touching live parts and cables results in death or lethal injuries due to electric shock.
• Ensure that all devices in the same network are integrated in the existing overvoltage protection.
• When laying the network cable outdoors, ensure that there is suitable surge protection at the network cable transition from the product outdoors to the network inside the building.
• The Ethernet interface of the product is classified as “TNV-1” and offers protection against overvoltages of up to 1.5 kV.

WARNING

Danger to life due to fire and explosion

• In rare cases, an explosive gas mixture can be generated inside the product under fault conditions. In this state, switching operations can cause a fire inside the product or explosion. Death or lethal injuries due to hot or flying debris can result.
• In the event of a fault, do not perform any direct actions on the product.
• Ensure that unauthorized persons have no access to the product.
• Do not operate the DC load-break switch on the inverter in case of an error.
• 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.
• Only perform work on the product (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 product. 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 product (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 product.

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.
• Risk of burns due to hot enclosure parts
• The enclosure and the enclosure lid may get hot during operation. The DC load-break switch can not become hot.
• Do not touch hot surfaces.
• Wait until the inverter has cooled down before touching the enclosure or enclosure lid.

CAUTION

• Risk of injury due to weight of product
• Injuries may result if the product is lifted incorrectly or dropped while being transported or mounted.
• Transport and lift the product carefully. Take the weight of the product into account.
• Use the carrying handles or hoist when transporting the product. To attach the hoist system, eye bolts must be screwed into the threads provided, which are located on the right and left of the product’s mounting lugs.
• Wear suitable personal protective equipment for all work on the product.

NOTICE

• Damage to the enclosure seal in subfreezing conditions
• If you open the product when temperatures are below freezing, the enclosure seals can be damaged. Moisture can penetrate the product and damage it.
• Only open the product 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 product (e.g. by melting the ice with warm air).

NOTICE

• Damage to the product due to sand, dust and moisture ingress
• Sand, dust and moisture penetration can damage the product and impair its functionality.
• Only open the product if the humidity is within the thresholds and the environment is free of sand and dust.
• Do not open the product during a dust storm or precipitation.
• Close tightly all enclosure openings.
• Only use listed rain-tight or liquid-tight conduit fittings to attach the conduits to the product.

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.

NOTICE

• Manipulation of system data in networks
• You can connect the supported SMA products to the Internet. When connected to the Internet, there is a risk that unauthorized users can access and manipulate the data of your system.
• Set up a firewall.
• Close unnecessary network ports.
• If absolutely necessary, only enable remote access via a virtual private network (VPN).
• Do not use the port forwarding feature. This also applies to the used Modbus ports.
• Disconnect system components from other network components (network segmentation).

NOTICE

• High costs due to inappropriate Internet tariff
• Depending on use, the data volume of the product transferred via the Internet may vary in size. The data volume depends, for example, on the number of devices in the system, the frequency of device updates, the frequency of data transfer to Sunny Portal or the use of FTP push. High costs for the Internet connection can be the result.
• SMA Solar Technology AG recommends using an Internet flat rate.

NOTICE

• Damage to the product due to cleaning agents
• The use of cleaning agents may cause damage to the product and its components.
• Clean the product and all its components only with a cloth moistened with clear water.

DHCP Server is recommended.

• The DCHP server automatically assigns the appropriate network settings to your nodes in the local network. A manual network configuration is therefore not necessary. In a local network, the Internet router is usually the DHCP server. If the IP addresses in the local network are to be assigned dynamically, DHCP must be activated in the Internet router (see the Internet router manual). In order to receive the same IP address by the internet router after a restart, set the MAC address binding.
• In networks where no DHCP server is active, proper IP addresses must be assigned from the free address pool of the network segment to all network participants to be integrated during commissioning.
• The country data set must be set correctly.
• If you select a country data set that is not valid for your country and purpose, it can cause a disturbance in the PV system and lead to problems with the grid operator. When selecting the country data set, you must always observe the locally applicable standards and directives as well as the properties of the PV system (e.g. PV system size, grid-connection point).
• If you are not sure which standards and directives are valid for your country or purpose, contact the grid operator.

Symbols on the Product

Instructions

Scope of Delivery

Mounting location

Mounting

Connecting

AC Connection

Connection to the Multifunction Relay ****

Connecting Signal Source to Digital Input DI 1-4

Connecting Signal Source to Digital Input DI 5-6

Connecting the network

DC Connection

Commissioning

Accessing the user interface via WLAN

Accessing the user interface via LAN

Configuration

Disconnecting From Voltage Sources

Compliance Information

FCC Compliance

This device complies with Part 15 of the FCC Rules and with Industry Canada license-exempt RSS standard(s).
Operation is subject to the following two conditions:

1. this device may not cause harmful interference, and
2. this device must accept any interference received, including interference that may cause undesired operation.

Le présent appareil est conforme aux CNR d’Industrie Canada applicables aux appareils radio exempts de licence.
NOTE: This equipment has been tested and found to comply with the limits for a Class A digital device, pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference when the equipment is operated in a commercial environment. This equipment generates, uses, and can radiate radio frequency energy and, if not installed and used in accordance with the instruction manual, may cause harmful interference to radio communications. Operation of this equipment in a residential area is likely to cause harmful interference in which case the user will be required to correct the interference at his own expense. Changes or modifications made to this equipment not expressly approved by SMA Solar Technology AG may void the FCC authorization to operate this equipment.

Contact

• https://go.sma.de/service
• Access data for the registration in Sunny Portal and WLAN password
• Serial number
• Device key to reset the administrator account. Store the device key safely.
• www.SMA-Solar.com

Documents / Resources

| SMA STP 20-US-50 Sunny Tripower Inverter [pdf] Installation Guide
STP 20-US-50, STP 25-US-50, STP 30-US-50, STP 20-US-50 Sunny Tripower Inverter, STP 20-US-50, Sunny Tripower Inverter, Tripower Inverter, Inverter
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References

• Solar.com | Get Binding Solar Quotes Online

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