Sunways STT Series User Manual
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Sunways STT Series User Manual

Grid-connected inverter
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AU
User Manual
Grid-connected Inverter
STT 4~25KTL
S U N W A Y S T E C H N O L O G I E S C O . , L T D .

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Summary of Contents for Sunways STT Series

  • Page 1 User Manual Grid-connected Inverter STT 4~25KTL S U N W A Y S T E C H N O L O G I E S C O . , L T D .

  • Page 2: Table Of Contents

    1 Preface ……………………………………………………… 5 1.1 Overview ………………………………………………………………………… 1.2 Target Groups …………………………………………………………………… 2 Safety Instructions ……………………………………… 6 2.1 Safety Notes ……………………………………………………………………… 2.2 Statement ………………………………………………………………………… 2.3 Important Safety Matters ……………………………………………………… 2.4 Symbols Explanation …………………………………………………………… 3 Product Description ……………………………………… 11 3.1 Basic Features ………………………………………………………………… 3.2 Physical Layout ………………………………………………………………...

  • Page 3: Preface

    The products, services or features purchased are subject to the commercial contracts ※ 1.2 Target Groups and terms of Sunways technologies Co., Ltd. All or part of the products, services This manual is applicable to the electrical installers with professional qualifications and or features described in this document may not be within purchased.

  • Page 4: Safety Instructions

    ※ 2.2 Statement Potentially dangerous situation, if not avoided, may result in death or serious personal injury. Sunways Technologies Co.,Ltd. has the right not to undertake quality assurance in any of Warning the following circumstances: ① Damages caused by improper transportation.

  • Page 5: Symbols Explanation

    2 Safety Instructions 2 Safety Instructions 2.4.2 Symbol on the Inverter nameplate The safety warning information about equipment or environment, to prevent equipment damage, data loss, equipment performance degradation or other unpredictable results. Attention The inverter cannot be disposed of with household waste. Symbol highlights important information, best practices and tips, etc.

  • Page 6: Product Description

    3.1.3 Applicable grid type The applicable grid types for the Sunways STT 4-25kW series are TN-S, TN-C, TN-C-S, IT and TT. When applied to the TT grid, the voltage of N to PE should be less than 30V.For more details please see Figure3-1: Keep dry.

  • Page 7: Physical Layout

    3 Product Description 3 Product Description 3.2.3 Inverter Bottom View 3.1.4 Storage conditions ① Inverter must be stored in its original packaging. ② The storage temperature and humidity should be in the range of -30℃ and+ 60℃ , and COM2-1 less than 90%, respectively.

  • Page 8: Display Interface

    Button Physical button press and long press. sunways ※ 3.4 Packing List The package of the inverter includes the following accessories. Please check whether the accessories in the packing box are complete when receiving the goods. See Figure 3-7 for the packing list.
  • Page 9 3 Product Description 3 Product Description PV Terminal×2 Monitoring Device×1(Optional) ② ① Export limitation & control version 2pcs; RS485 and DRED version 1 pcs (This connector already pre-installed inside the inverter). ② STT 4-12kW 2pcs / STT 15kW 3pcs / STT 17-25kW 4pcs. Note ③...

  • Page 10: Installation

    4 Installation ※ 4.1 Location Do not put flammable and explosive articles around the inverter. The Sunways STT 4-25kW series inverters designed with IP65 protection enclosure for Warning indoor and outdoor installations. When selecting an inverter installation location, the following factors should be considered: 4.1.2 Installation Spacing...

  • Page 11: Mounting

    4 Installation 4 Installation ※ 4.2 Mounting ② Bracket assembly Prepare the two M5 screws and L-shaped plate in the accessory bag, then fix the L-shaped 4.2.1 Wall bracket installation plate to the mounting bracket. Dimensions of wall bracket, see Figure 4-4: 300mm 150mm 150mm...

  • Page 12: External Ground Connection

    4 Installation 4 Installation ※ 4.3 External ground connection 4.2.2 Mounting the inverter Lift the inverter, hang the back rail on the fixed wall bracket carefully. Screws the inverter to the L-shaped plate (The lock is purchased separately). See Figure 4-8 for details: Do not connect the N-wire as a protective ground wire to the inverter casing.

  • Page 13: Electrical Connection

    ② Peel off the DC cable insulation sleeve for 7 mm, as shown in Figure 4-10: Do not use other brands or other types of terminals other than the terminals in the accessory package. Sunways has the right to refuse all damages caused by the mixed- use of terminals.
  • Page 14 PV array, cables or inverter (DC). The RCD in the Sunways inverter can detect leakage on the DC side. An external RCD is required in some countries. The installer must check which type of RCD is required by the specific local electric codes.
  • Page 15 4 Installation 4 Installation An AC breaker must be connected on the AC side of the inverter. Any loads cannot be connected to the inverter without the AC breaker. Warning Wire Diameter:13-18mm St r i p Le ng t h:8mm 1.

  • Page 16: Monitoring Device Installation

    ④ According to the arrow direction push the threaded sleeve to make it connected with the AC terminal head and then rotate the cable gland clockwise to lock it, as shown in Sunways STT 4-25kW series three phase inverter supports WIFI, GPRS, LAN, 4G and RS485 figure 4-18: communication.

  • Page 17: Meter/Rs485/Dred Connection

    ① This port is available on export limitation & control, RS485 and DRED versions of the Note STT series three-phase inverter supports multiple inverters daisy-chain connection to a inverter only. ② The Pin connector in inverter Port1 and Port2 may vary from 2Pin to 3pin according to data logger via RS485 communication.
  • Page 18 Attention 4.6.3 Export limitation & control or generation limit solution Any further difficulties in export limitation & control or generation limit solution, wiring instructions and configuration, please contact Sunways after-sales at service@sunways- tech.com. 4.6.4 Wiring Steps: ① Remove the COM2 plate in the bottom of the inverter with a cross screwdriver.

  • Page 19: Start And Stop

    5 Start and Stop 6 General Operation 5 Start and Stop 6 General Operation ※ 5.1 Start the Inverter ※ 6.1 Display Operation When starting the inverter, follow these steps: When the inverter is turned on, the following interfaces will be displayed on the OLED ①...

  • Page 20: Country Code (Safety Code) Setting

    If you are installer, please contact importer for password. You inverters. can also call Sunways service telephone at +86 400-9922-958 or email Sunways at service@ Please follow this flow chart to enable 10% AC output boost: sunways-tech.com for password.

  • Page 21: Power Quality Response Modes

    The default for this function in Australia is the ON contact Sunways Technical Support at service@sunways-tech.com. User have access to state. User have access to view the power quality response moude status in Sunways view the grid protection status in Sunways Portal APP. Please refer to bellow steps.

  • Page 22: Power Rate Limit Setting

    6.8.1 Export limit fuction setting Please follow this flow chart to set“Power rate limit”: Sunways inverter's Export Limit function can be enable if export limit is requried by local. The “Power rate limit ” settings are password protected. User should be able to view Please set “Export Limit”...

  • Page 23: Online Monitoring App

    6.8.2 Generation limit setting 6..8.3 Soft export and hard export switch Sunways inverter's Export Limit function can be enable if export limit is requried by local. During “Export Limit” setting and “Generation Limit” setting, the “Soft Export” mode and Please set “Generation Limit ” under the menu “Generation Limit” in “Advanced “Hard Export”...

  • Page 24: Troubleshooting

    Error Message Description Troubleshooting ※ 7.1 Error Message ① Check whether the safety regulation settings Sunways STT 4-25kW series three phase inverter is designed in accordance with grid Grid over frequency or are correct. Grid Frequency underfrequency, the grid ② Check the frequency of the grid. If the grid operation standards, and conform to the requirements of safety and EMC.
  • Page 25 AC side or just connected well on AC side or restart inverter. occasional failure. ② If the neutral & ground cable are connected well, please contact Sunways. ① Restart the inverter, wait a moment for Internal communication fails. inverter recovery.

  • Page 26: Pv System For Ground Faults

    STT-5KTL-P Message "GFCI Fault" will be displayed in the Results menu on the inverter user interface. Input At the same time, the Sunways monitoring system will also issue an alarm. Start-up Voltage (V) ※ 7.3 Maintenance Max. DC Input Voltage (V)

  • Page 27: Technical Parameters

    8 Technical Parameters 8 Technical Parameters Model STT-4KTL STT-4KTL-P STT-5KTL STT-5KTL-P Model STT-6KTL STT-6KTL-P STT-8KTL STT-8KTL-P Efficiency Input Max. Efficiency 98.1% 98.1% 98.1% 98.1% Start-up Voltage (V) European Efficiency 97.9% 97.9% 97.9% 97.9% Max. DC Input Voltage (V) 1,100 1,100 1,100 1,100 MPPT Efficiency...
  • Page 28 8 Technical Parameters 8 Technical Parameters Model STT-6KTL STT-6KTL-P STT-8KTL STT-8KTL-P Model STT-10KTL STT-10KTL-P STT-12KTL STT-12KTL-P Efficiency Input Max. Efficiency 98.3% 98.3% 98.3% 98.3% Start-up Voltage (V) European Efficiency 98.0% 98.0% 98.0% 98.0% Max. DC Input Voltage (V) 1,100 1,100 1,100 1,100 MPPT Efficiency...
  • Page 29 8 Technical Parameters 8 Technical Parameters Model STT-10KTL STT-10KTL-P STT-12KTL STT-12KTL-P Model STT-15KTL STT-15KTL-P STT-17KTL STT-17KTL-P Efficiency Input Max. Efficiency 98.6% 98.6% 98.6% 98.6% Start-up Voltage (V) European Efficiency 98.2% 98.2% 98.2% 98.2% Max. DC Input Voltage (V) 1,100 1,100 1,100 1,100 MPPT Efficiency...
  • Page 30 8 Technical Parameters 8 Technical Parameters Model STT-15KTL STT-15KTL-P STT-17KTL STT-17KTL-P Model STT-20KTL STT-20KTL-P STT-25KTL STT-25KTL-P Efficiency Input Max. Efficiency 98.6% 98.6% 98.6% 98.6% Start-up Voltage (V) European Efficiency 98.2% 98.2% 98.2% 98.2% Max. DC Input Voltage (V) 1,100 1,100 1,100 1,100 MPPT Efficiency...
  • Page 31 8 Technical Parameters Model STT-20KTL STT-20KTL-P STT-25KTL STT-25KTL-P Efficiency Max. Efficiency 98.6% 98.6% 98.6% 98.6% European Efficiency 98.2% 98.2% 98.2% 98.2% MPPT Efficiency 99.9% 99.9% 99.9% 99.9% Protection DC Reverse Polarity Protection Integrated Insulation Resistance Protection Integrated Surge Protection Integrated Over-temperature Protection Integrated Residual Current Protection...
  • Page 32 No. 1, Second Road, Green Industrial Zone, Chongshou Town, Cixi City, ZheJiang Province, PRC www.sunways-tech.com service@sunways-tech.com...

This manual is also suitable for:

Stt-4ktlStt-5ktlStt-6ktlStt-8ktlStt-10ktlStt-12ktl ... Show all

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