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Summary of Contents for Sunways STS Series
- Page 1 User Manual Grid-connected Inverter STS 3~6KTL 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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Page 2: Table Of Contents
1 Preface ……………………………………………………… 1.1 Overview ………………………………………………………………………… 5 1.2 Target Groups …………………………………………………………………… 5 2 Safety Instructions ……………………………………… 2.1 Safety Notes ……………………………………………………………………… 6 2.2 Statement ………………………………………………………………………… 6 2.3 Important Safety Matters ……………………………………………………… 7 2.4 Symbols Explanation …………………………………………………………… 8 3 Product Description ……………………………………… 3.1 Basic Features …………………………………………………………………... -
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 or This manual is applicable to the electrical installers with professional qualifications and features described in this document may not be within purchased. -
Page 4: Safety Instructions
Potentially dangerous situation, if not avoided, may result in death or serious personal ※ 2.2 Statement 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
Keep dry. The applicable grid types for the Sunways STS 3-6kW series are TN-S, TN-C, TN-C-S 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:... -
Page 7: Physical Layout
3 Product Description 3 Product Description ※ 3.2 Physical Layout 3.2.3 Inverter Bottom View 3.2.1 Inverter front view COM2-1 410mm COM1 COM2-2 Logo DC Switch * Back Rail DC Input Terminal Com1 Port Com2 Port (Optional) Figure 3-4 Bottom view *：Inverter without DC switch can be selected on demand. -
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 ② DRED version only (This connector already pre-installed inside the inverter). ③ The AC terminals of STS-3-6KTL and STS-7-11KTL are similar but not exactly same, do not mix Note them. Sunways has the right to refuse all damages caused by the mixed-use of terminals. AC Terminal×1 Ground Terminal×1 ③...
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Page 10: Installation
4 Installation ※ 4.1 Location Do not put flammable and explosive articles around the inverter. The Sunways STS 3-6kW series inverters designed with IP65 protection enclosure for Warning indoor and outdoor installations. When selecting an inverter installation location, the fol- 4.1.2 Installation Spacing... -
Page 11: Mounting
4 Installation 4 Installation ※ 4.2 Mounting ② Bracket assembly Prepare the two M5 screws and Z-shaped plate in the accessory bag, then fix the Z-shaped 4.2.1 Wall bracket installation plate to the mounting bracket. Dimensions of wall bracket, see Figure 4-4: 16mm 110mm 110mm... -
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 Z-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
Warning Do not use other brands or other types of terminals other than the terminals in the ac- Wire Traverse area 2.5-4mm cessory package. Sunways has the right to refuse all damages caused by the mixed-use of terminals. Attention Moisture and dust can damage the inverter, ensure the cable gland is securely tightened during installation. - Page 14 ⑥ Use an open-end wrench to screw the nut to the end to ensure that the terminal is well ① The DC switch of Sunways inverter is optional. Local standards or codes may require sealed, as shown in Figure 4-13: that PV systems are fitted with an external DC switch on the DC side.
- Page 15 Wire Diameter:10-14mm used, with a tripping current of 300mA or higher. St r ip Le n gt h :8mm The recommended cable and AC switch for the Sunways STS 3-6kW series single phase inverter are shown in the following table: 50mm...
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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 fig- Sunways STS 3-6kW series single phase inverter supports WIFI, GPRS, LAN, 4G and RS485 ure 4-19: communication. -
Page 17: Ct/Rs485/Dred Connection
① This port is available on export limitation & control, RS485 and DRED versions of the Note STS series single-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 4.6.3 Export limitation & control or power limit solution Export limitation & control or power limit solution, wiring instructions and configuration, COM2-1 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.
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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 dis- ①... -
Page 20: Country Code (Safety Code) Setting
Settings This mode can be enabled via the configuration software.It is enabled by default in some regions, such as AU market. For information on how to change default setpoints please contact Sunways Technical Support at service@sunways-tech.com. Setting Short press(1s),switch window 6.4.2 Reactive power regulation for voltage variation (Volt-VAr mode) -
Page 21: Online Monitoring App
If Sunways STS 3-6kW series single phase inverter is designed in accordance with grid op- download issues exist , contact your dealer or Sunways technical support. -
Page 22: Troubleshooting
② If the neutral & ground cable are connected DCI Fault tects a higher DC component in ② If the fault occurs repeatedly, please contact well, please contact Sunways. AC output. Sunways. ① Restart the inverter, wait a moment for invert- I n t e r n a l s t o r a g e a n o m a l y . -
Page 23: Maintenance
STS-3.6KTL-P Message "GFCI Fault" are being displayed in the Results menu on the inverter user inter- Input face. At the same time, the Sunways monitoring system will also issue an alarm. Start-up Voltage (V) Max. DC Input Voltage (V) ※ 7.3 Maintenance... - Page 24 8 Technical Parameters Model STS-3KTL STS-3KTL-P STS-3.6KTL STS-3.6KTL-P Model STS-4.2KTL STS-4.2KTL-P STS-4.6KTL STS-4.6KTL-P Input MPPT Efficiency 99.9% 99.9% 99.9% 99.9% Protection Start-up Voltage (V) DC Reverse Polarity Protection Integrated Max. DC Input Voltage (V) Insulation Resistance Protection Integrated Rated DC Input Voltage (V) Surge Protection Integrated MPPT Voltage Range (V)
- Page 25 8 Technical Parameters Model STS-4.2KTL STS-4.2KTL-P STS-4.6KTL STS-4.6KTL-P Model STS-5KTL STS-5KTL-P STS-6KTL STS-6KTL-P Protection Input Start-up Voltage (V) DC Reverse Polarity Protection Integrated Max. DC Input Voltage (V) Insulation Resistance Protection Integrated Rated DC Input Voltage (V) Surge Protection Integrated MPPT Voltage Range (V) 100~550 100~550...
- Page 26 8 Technical Parameters Model STS-5KTL STS-5KTL-P STS-6KTL STS-6KTL-P Protection DC Reverse Polarity Protection Integrated Insulation Resistance Protection Integrated Surge Protection Integrated Over-temperature Protection Integrated Residual Current Protection Integrated Islanding protection Frequency shift, Integrated AC Short-circuit Protection Integrated AC Over-voltage Protection Integrated General Data Dimensions (mm）...
- Page 28 No. 1, Second Road, Green Industrial Zone, Chongshou Town, Cixi City, ZheJiang Province, PRC www.sunways-tech.com service@sunways-tech.com...
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