Sunways STT Series User Manual
Grid-connected inverter
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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 .
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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
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 ap- plied to the TT grid, the voltage of N to PE should be less than 30V.For more details please see Figure3-1: This side up. -
Page 7: Physical Layout
3 Product Description 3 Product Description 3.1.4 Storage conditions 3.2.3 Inverter Bottom View 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 less than 90%, respectively. ③... -
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) User Guide ② Quick Guide User Manual Inspection Report Figure 3-7 Packing list ① Export limitation & control version 2pcs; RS485 and DRED version 1 pcs (This connector AC Terminal×1 Ground Terminal×1 already pre-installed inside the inverter).
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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 fol- lowing factors should be considered: 4.1.2 Installation Spacing... -
Page 11: Mounting（Standard Bracket
4 Installation 4 Installation ※ 4.2 Mounting（Standard bracket） ② Use an electrical driller with 10mm diameter bit to drill 5 holes in the wall with 80mm depth. 4.2.1 Wall bracket installation Dimensions of wall bracket, see Figure 4-4: Before drilling, make sure to avoid any buried water tube and electric wires in the wall. Warning 300mm ③... -
Page 12: Mounting（Including L-Shaped Plate
4 Installation 4 Installation ※ 4.3 Mounting（Including L-shaped plate） ② Bracket assembly Prepare the two M5 screws and L-shaped plate in the accessory bag, then fix the L-shaped 4.3.1 Wall bracket installation plate to the mounting bracket. Dimensions of wall bracket, see Figure 4-8: 300mm 150mm 150mm... -
Page 13: External Ground Connection
4 Installation 4 Installation ※ 4.4 External ground connection 4.3.2 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 4-12 for details: Do not connect the N-wire as a protective ground wire to the inverter casing. -
Page 14: Electrical Connection
Warning Wire Traverse area 2.5-4mm Do not use other brands or other types of terminals other than the terminals in the ac- cessory package. Sunways has the right to refuse all damages caused by the mixed-use of terminals. Attention Figure 4-14 Moisture and dust can damage the inverter, ensure the cable gland is securely tightened ③... - Page 15 4 Installation 4 Installation Crimping Plier Figure 4-16 ⑤ Insert the positive and negative cables into the corresponding positive and negative con- Figure 4-18 nectors, pull back the DC cable to ensure that the terminal is tightly attached in the connec- 4.
- Page 16 300mA or higher. Wire Diameter:13-18mm St r ip Le n gt h: 8mm The recommended cable and AC switch for the Sunways STT 4-25kW series three phase inverter are shown in the following table: 50mm...
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Page 17: 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 STT 4-25kW series three phase inverter supports WIFI, GPRS, LAN, 4G and RS485 ure 4-23: communication. - Page 18 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 19 4.7.3 Export limitation & control or power limit solution Export limitation & control or power limit solution, wiring instructions and configuration, please contact Sunways after-sales at service@sunways-tech.com. 4.7.4 Wiring Steps: ① Remove the COM2 plate in the bottom of the inverter with a cross screwdriver.
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Page 20: 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 21: Country Code (Safety Code) Setting
6 General Operation 6 General Operation ※ 6.3 Auto-Test 6.1.2 LAN/WIFI Setting This function is disabled by default, and only will be functional in the safety code of Italy. Short press the button several times until “Auto Test CEI 0-21” displays on the screen, DHCP ON press and hold the button 3 seconds to activate “Auto Test”. -
Page 22: Power Quality Response Modes
※ 7.1 Error Message nect to the grid and automatically start the next test according to the requirements of CEI Sunways STT 4-25kW series three phase inverter is designed in accordance with grid op- 0-21. eration standards, and conform to the requirements of safety and EMC. The inverter had passed a series of rigorous tests to ensure it runs sustainably and reliably before ship- ※... -
Page 23: Troubleshooting
② If the fault occurs repeatedly, please contact protection value. protection parameters, please contact the local Sunways. grid company to resolve. Low system insulation resis- ① Check whether the PV panels, cables, and ①... -
Page 24: Error Message
Restart the inverter only after removing the fault that impairs safety performance. Sunways. Never arbitrarily replace any internal components. For any maintenance support, please contact Sunways. Otherwise, Sunways shall not be held liable for any damage caused. Attention Servicing of the device in accordance with the manual should never be undertaken in the absence of proper tools, test equipment or the latest revision of the manual which ①... -
Page 25: Technical Parameters
8 Technical Parameters 8 Technical Parameters 8 Technical Parameters Model STT-4KTL STT-4KTL-P STT-5KTL STT-5KTL-P Efficiency Model STT-4KTL STT-4KTL-P STT-5KTL STT-5KTL-P Max. Efficiency 98.1% 98.1% 98.1% 98.1% Input European Efficiency 97.9% 97.9% 97.9% 97.9% Start-up Voltage (V) MPPT Efficiency 99.9% 99.9% 99.9% 99.9% Protection... - Page 26 8 Technical Parameters 8 Technical Parameters Model STT-6KTL STT-6KTL-P STT-8KTL STT-8KTL-P Model STT-6KTL STT-6KTL-P STT-8KTL STT-8KTL-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 27 8 Technical Parameters 8 Technical Parameters Model STT-10KTL STT-10KTL-P STT-12KTL STT-12KTL-P Model STT-10KTL STT-10KTL-P STT-12KTL STT-12KTL-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 28 8 Technical Parameters 8 Technical Parameters Model STT-15KTL STT-15KTL-P STT-17KTL STT-17KTL-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 29 8 Technical Parameters 8 Technical Parameters Model STT-20KTL STT-20KTL-P STT-25KTL STT-25KTL-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 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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