Sungrow SG3.0-20.0RT Multi MPPT String Inverter Installation Guide

Sungrow SG3.0-20.0RT Multi MPPT String Inverter

INSTRUCTION

1. Contents may be periodically updated or revised due to product development. The information in this guide is subject to change without notice. In no case shall this guide substitute for the user manual or related notes on the device.
2. Make sure to read over, fully understand, and strictly follow the detailed instructions of the user manual and other related regulations before installing the equipment. The user manual can be downloaded by visiting the website at http://support.sungrowpower.com/; or it can be obtained by scanning the QR code on the side of the equipment or the back cover of this guide.
3. All installations must be performed by qualified personnel who should have training for the installation and commissioning of electrical systems, as well as dealing with hazards, and have knowledge of the manual and of the local regulations and directives.
4. Before installation, check that the package contents are intact and complete compared to the packing list. Contact SUNGROW or the distributor in case of any damaged or missing components.
5. The cable used must be intact and well-insulated. Operation personnel must wear proper personal protective equipment (PPE) all the time.
6. Any violation could result in personal death or injury or device damage and will void the warranty.

Safety

The inverter has been designed and tested strictly according to international safety regulations. Read all safety instructions carefully prior to any work and observe them at all times when working on or with the inverter. Incorrect operation or work may cause:

• injury or death to the operator or a third party; or
• damage to the inverter and other properties.

Please follow the safety instructions related to the PV strings and the utility grid.

Lethal voltage!

• PV strings will produce electrical power when exposed to sunlight and can cause a lethal voltage and an electric shock.
• Only qualified personnel can perform the wiring of the PV panels.

NOTICE
Danger to life from electric shock due to lethal voltage!

• All electrical connections must be in accordance with local and national standards.
• Only with the permission of the utility grid, the inverter can be connected to the utility grid.

Inverter
The icons on the inverter body are as follows

• Disconnect the inverter from all the external power sources before maintenance!
• Danger to life due to high voltages! Do not touch live parts for 10 minutes after disconnection from the power sources. Only qualified personnel can open and service the inverter
• Burn danger due to hot surface that may exceed 60.
• Read the user manual before maintenance!
• RCM mark of conformity.
• TuV mark of conformity.
• Do not dispose of the inverter together with household waste.
• Additional grounding point.
• CE mark of conformity. EU/EEA Importer.
• The inverter does not have a transformer.
• UKCA mark of conformity.

DANGER
Danger to life from electric shocks due to live voltage

• Do not open the enclosure at any time. Unauthorized opening will void warranty and warranty claims and in most cases terminate the operating license.
• When the enclosure lid is removed, live components can be touched which can result in death or serious injury due to electric shock.

Lethal danger from electric shock due to possibly damaged inverter

• Only operate the inverter when it is technically faultless and in a safe state.
• Operating a damaged inverter can lead to hazardous situations that can result in death or serious injuries due to electric shock.

WARNING
Risk of inverter damage or personal injury

• Do not connect or disconnect the PV and AC connectors when the inverter is running.
• Wait at least 10 minutes for the internal capacitors to discharge after all electric devices are removed and the inverter is powered off.
• Ensure that there is no voltage or current before connecting or disconnecting the PV and AC connectors.

WARNING
All the warning labels and nameplate on the inverter body:

• must be clearly visible; and
• must not be removed, covered or pasted.

CAUTION
Risk of burns due to hot components!

Do not touch any hot parts (such as the heat sinks) during operation. Only the DC switch can safely be touched at any time.C

NOTICE
Only qualified personnel can perform the country setting. Unauthorized alteration may cause a breach of the type-certificate marking.
Risk of inverter damage due to electrostatic discharge (ESD)!
By touching the electronic components, you may damage the inverter. For inverter handling, be sure to:

• avoid any unnecessary touching; and
• wear a grounding wristband before touching any connectors.

Scope of Delivery

1. The DC switch is optional.
2. The images shown here are for reference. The actual quantity is based on delivery.
3. For countries except Brazil.
4. For Brazil.

Mounting location

Installation tools

Mounting

• Use appropriate mounting hardware for wall type.
• The image shown here is for reference only. The actual product received may differ.

PE

AC

• It is recommended to use heavy duty conduits when run cables through Cavity walls, or lay out cables with corresponding conduits.
• A RCD is not required if either of these two installation methods is adopted according to the local standard AS3000-2018. (For “AU” and “NZ”)

For inverter models .?15 kW

DC

• If the DC protection cover delivered separately need to be installed on site, please firstly lead the DC cables through the waterproof terminal on the DC protection cover and then assemble the DC connectors.

• It is recommended to use heavy duty conduits when run cables through Cavity walls, or lay out cables with corresponding conduits. A RCD is not required if either of these two installation methods is adopted according to the local standard AS3000-2018.
  {For “AU” and “NZ”)

• For inverters without a DC switch, it is necessary to prepare an external DC switch according to AS 60947.3.

WLAN

Ethernet

(Cannot be used simultaneously with A1 and B1 terminals for RS485 daisy chain )

COM2

The connections for Meter (single inverter), DO, NS and DRM are the same. Take meter connection as an example .

Inverter RS485 Daisy Chain (S 5)
The followings describe the procedure to crimp two wires to the two-wire core end tenninal. Other steps are the same as meter connection described previously

Ripple control

Power on

For inverters without a DC switch, it is necessary to prepare an external DC switch according to AS 60947.3.

LED indicator

More information in the QR code or at http://support.sungrowpower.com/

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