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 80~125KTL 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 qualifi cations and features described in this document may not be within purchased. -
Page 4: Safety Instructions
Danger ※ 2.2 Statement Potentially dangerous situation, if not avoided, may result in death or serious personal Sunways Technologies Co.,Ltd. has the right not to undertake quality assurance in any of injury. the following circumstances: Warning ①... -
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 This side up. The applicable grid types for the Sunways STT 80-125kW 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. -
Page 7: Physical Layout
3 Product Description 3 Product Description ※ 3.2 Physical Layout 3.2.1 Inverter front view 975mm Figure 3-1 400V output inverter applicable grid type LOGO Display Figure 3-3 Front view 3.2.2 Inverter side view 290mm Figure 3-2 500V output inverter applicable grid type 3.1.4 Storage conditions Name Plate... -
Page 8: Display Interface
※ 3.3 Display Interface Figure 3-5 Bottom view Wiring terminals are at the bottom of the inverter, as shown in the table below. Item Terminal Note sunways DC Input terminal PV connector COM 1 Port WiFi/LAN/GPRS/4G device connector COM 2 Port... -
Page 9: Packing List
3 Product Description 3 Product Description PV Terminal × 12 6Pin Terminal× 2 ① ① Item Indicator Status Description Off No input voltage detected or input voltage is too low. Slow fl ashing Inverter powered on, waiting for the grid connection. Power Indicator Quick fl... -
Page 10: Installation
Do not put fl ammable and explosive articles around the inverter. ※ 4.1 Location Warning The Sunways STT 80-125kW series inverters designed with IP65 protection enclosure for 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 ③ Follow the instructions in the picture below to install the M10 assembling bolts (bolt, spring washer, fl at washer) and tighten the bolts with torque wrench in the torque of 35- 4.2.1 Wall bracket installation 40N.m, see Figure 4-6 for details: Dimensions of wall bracket, see Figure 4-4: 668mm... -
Page 12: External Ground Connection
Figure 4-8. 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. - Page 13 4 Installation 4 Installation 2. DC connector assembly procedure ① Select the appropriate photovoltaic cable: Crimping Plier Cable type Traverse area (mm²) Range (mm Recommended value (mm General photovoltaic Figure 4-11 cable 2.5-4.0 ⑤ Insert the positive and negative cables into the corresponding positive and negative connectors, pull back the DC cable to ensure that the terminal is tightly attached in the ②...
- Page 14 See technical parameters for details. ① AC Circuit Breaker The rated output voltage and recommended AC breaker specifi cations of Sunways STT se- ries 80~125kW three-phase inverter as shown in the table below: Figure 4-13...
- Page 15 4 Installation 4 Installation ④ PE wire requirements OT / DT terminals of phase wire OT / DT terminals of PE wire Phase wire PE wire cross Note cross section S section Specifi cation The specifi cations are valid only when the phase wire and PE wire a ≤...
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Page 16: Monitoring Device Installation
fi nish the AC connection immediately. Any damages caused by the moisture and dust that came into the inverter on account of exposed to the air for a long time are out of Sunways warranty. Attention ※... -
Page 17: Meter/Rs485/Dred Connection
4 Installation 4 Installation Port 4 Port 1 Port 2 Port 3 Figure 4-22 Figure 4-21 Monitoring device installation The 4G, GPRS and LAN version module does not need to be confi gured. Port 1 Port 2 Port3 Port4 The WiFi version module needs to be confi gured to the router for the fi rst installation. If the router name or password are changed, the WiFi dongle will need to be reconfi... - Page 18 DRM connection. Support DRM command: DRMO, DRM5, DRM6, DRM7, DRMB. 4.6.2 RS485 Communication STT series three-phase inverter supports multiple inverters daisy-chain connection to a data logger via RS485 communication. Multiple inverters connection diagram as shown in Figure 4-23:...
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Page 19: Start And Stop
Export limitation & control or power limit solution, wiring instructions and confi guration, range, the green light on the left side of the screen begins to fl ash, and the “Waiting” mes- please contact Sunways after-sales at service@sunways-tech.com. sage will be displayed on the OLED display. -
Page 20: General Operation
6 General Operation 6 General Operation 6 General Operation Please wait for 10seconds and the inverter will automatically save your settings or modi- ※ 6.1 Display Operation fi cations. Note When the inverter is turned on, the following interfaces will be displayed on the OLED dis- play, and the OLED display allows the user to check various operation information and to 6.1.2 LAN/WIFI Setting modify the settings of the inverter. -
Page 21: Auto-Test
"Remote" is set as 1by default, which only can be modifi ed to "O" by sending an external This mode can be enabled via the confi guration software. Please contact Sunways Techni- com mand and "Local" is set to O by default, which can be modifi ed to 1through operat- cal Support at service@sunways-tech.com for more information. -
Page 22: Troubleshooting
① Check whether the safety regulation settings Grid over frequency or under- are correct. Sunways STT 80-125kW series three phase inverter is designed in accordance with grid Grid Frequency frequency, the grid frequency ② Check the frequency of the grid. If the grid operation standards, and conform to the requirements of safety and EMC. - Page 23 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 invert- Internal communication fails. er recovery.
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Page 24: Maintenance
(A) Restart the inverter only after removing the fault that impairs safety performance. Output Never arbitrarily replace any internal components. For any maintenance support, please contact Sunways. Otherwise, Sunways shall not be Rated Output Power (W) 80,000 100,000 110,000 held liable for any damage caused. - Page 25 8 Technical Parameters 8 Technical Parameters Model STT-80KTL STT-100KTL STT-110KTL Model STT-100KTL-HV STT-125KTL-HV Effi ciency Input Max. Effi ciency 98.8% 98.8% 98.8% Start-up Voltage (V) European Effi ciency 98.3% 98.3% 98.3% Max. DC Input Voltage (V) 1,100 1,100 MPPT Effi ciency 99.9% 99.9% 99.9%...
- Page 26 8 Technical Parameters Model STT-100KTL-HV STT-125KTL-HV MPPT Effi ciency 99.9% 99.9% Protection DC Reverse Polarity Protection Integrated Insulation Resistance Protection Integrated DC Switch Optional 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...
- Page 27 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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