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Summary of Contents for Sunways STT-29.9KTL
- Page 1 User Manual Grid-connected Inverter STT 30-60KTL 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
※ 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
STT-60KTL-M、STT-40KTL-HV、STT-50KTL-HV、STT-60KTL-HV 3.1.3 Applicable grid type The applicable grid types for the Sunways STT 30-60KTL series are TN-S, TN-C, TN-C-S, IT and TT. When ap- This side up. plied 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 600mm LOGO Display Figure 3-2 500V output inverter applicable grid type Figure 3-3 Front view 3.1.4 Storage conditions 3.2.2 Inverter side view ① Inverter must be stored in its original packaging. ②... -
Page 8: Display Interface
※ 3.3 Display Interface Item Terminal Note DC Input terminal PV connector COM 1 Port WiFi/LAN/GPRS/4G device connector COM 2 Port Meter connector Sunways COM 3 Port RS485 connector AC Output Terminal Used for AC output cable connection Figure 3-7 Display interface... -
Page 9: Packing List
3 Product Description 3 Product Description ※ 3.4 Packing List Item Indicator Status Description 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 3-8 for No input voltage detected or input voltage is too low. -
Page 10: Installation
Terminal（Optional） Terminal（Optional） ※ 4.1 Location The Sunways STT 30-60KTL series inverters designed with IP66 protection enclosure for indoor and outdoor installations. When selecting an inverter installation location, the fol- lowing factors should be considered: ① The wall on which the inverters mounted must be able to withstand the weight of the inverter. -
Page 11: Mounting
4 Installation 4 Installation ※ 4.2 Mounting 4.2.1 Wall bracket installation Do not put flammable and explosive articles around the inverter. Dimensions of wall bracket, see Figure 4-4: Warning 4.1.2 Installation Spacing The requirements for inverter installation spacing are shown in Figure 4-2: 29mm 470mm 800mm... -
Page 12: External Ground Connection
4 Installation 4 Installation ③ Follow the instructions in the picture below to install the M10 assembling bolts (bolt, ※ 4.3 External ground connection spring washer, flat washer) and tighten the bolts with torque wrench in the torque of 35- 40N.m, see Figure 4-6 for details: Do not connect the N-wire as a protective ground wire to the inverter casing. -
Page 13: 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 4-9 Moisture and dust can damage the inverter, ensure the cable gland is securely tightened ③... - Page 14 4 Installation 4 Installation Crimping Plier Figure 4-11 ⑤ Insert the positive and negative cables into the corresponding positive and negative con- Figure 4-13 nectors, pull back the DC cable to ensure that the terminal is tightly attached in the connec- 4.
- Page 15 ① AC Circuit Breaker ② Aluminium cable requirements The rated output voltage and recommended AC breaker specifications of Sunways STT If you choose aluminum wire, please riveting the copper-aluminum conversion terminal 30-60KTL three-phase inverter as shown in the table below: to avoid direct contact between the copper bar and the aluminum wire.
- Page 16 4 Installation 4 Installation ② Thread the stripped wire into the lock nut and the main body in turn (the flexible wire needs to be riveted to the insulated terminal), as shown in Figure 4-18: 18.00 40.00 Figure 4-16 ③ PE wire requirements Phase wire PE wire cross Note...
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Page 17: Monitoring Device Installation
④ Insert the flat cable of the display back to its place and put back the right roof cover and lock with its original screws. As shown in Figure 4-20: Sunways STT 30-60KTL series three phase inverter supports WIFI, GPRS, LAN, 4G and RS485 communication. -
Page 18: Meter/Rs485/Dred Connection
4.6.3 Export limitation & control or power limit solution 485-A1 485-B1 ln case of multiple inverters, all Export limitation & control or power limit solution, wiring instructions and configuration, COM3 RS485 the inverters can be daisy- please contact Sunways after-sales at service@sunways-tech.com. chained via RS485 cables. 485-A1 485-B1... - Page 19 4 Installation 4 Installation Connection of RS485 4.6.4 Wiring Steps Please connect the cables in order as shown in the right table in Figure 4-26: ① Unscrew the plugs of the RS485 port and Meter port on the inverter. ② Dismount the terminal，and put the cable through the plate. 6.5mm Different cables and connection methods should be applied for different functions.
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Page 20: Start And Stop
4 Installation 5 Start and Stop 5 Start and Stop ③ Connect the terminal to the right position onto the inverter，as shown in Figure 4-28: ※ 5.1 Start the Inverter When starting the inverter, follow these steps: ① Turn on the AC breaker first (close the AC circuit breaker). ②... -
Page 21: General Operation
6 General Operation 6 General Operation 6 General Operation Please wait for 10 seconds and the inverter will automatically save your settings or modi- fications. Note ※ 6.1 Display Operation When the inverter is turned on, the following interfaces will be displayed on the OLED 6.1.2 LAN/WIFI Setting display, and the OLED display allows the user view various operation information and modify the settings of the inverter. -
Page 22: Auto-Test
Connect the AC cable, auto test will start after the inverter connected to the grid, see the operation steps below: 6.4.1 Power derating for voltage variation (Volt-Watt mode) This mode can be enabled via the configuration software. Please contact Sunways Tech- nical Support at service@sunways-tech.com for more information. Short press(1s),switch window Long... -
Page 23: Troubleshooting
① Check whether the safety regulation settings Grid over frequency or under- are correct. Sunways STT 30-60KTL 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 24 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 25: Maintenance
Restart the inverter only after removing the fault that impairs safety performance. Backfeed Current To The Array(A) Never arbitrarily replace any internal components. For any maintenance support, please contact Sunways. Otherwise, Sunways shall not be Output held liable for any damage caused. - Page 26 8 Technical Parameters 8 Technical Parameters Model STT-40KTL STT-45KTL STT-50KTL-M STT-60KTL-M Model STT-29.9KTL STT-30KTL STT-33KTL STT-36KTL Input Efficiency Max. Efficiency 98.8% 98.8% 98.8% 98.8% Start-up Voltage (V) European Efficiency 98.3% 98.3% 98.3% 98.3% Max. DC Input Voltage (V) 1100 1100...
- Page 27 8 Technical Parameters 8 Technical Parameters Model STT-40KTL-HV STT-50KTL-HV STT-60KTL-HV Model STT-40KTL STT-45KTL STT-50KTL-M STT-60KTL-M 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) 1100 1100 1100 Insulation Resistance Protection Integrated Rated DC Input Voltage (V) DC Switch...
- Page 28 8 Technical Parameters Model STT-40KTL-HV STT-50KTL-HV STT-60KTL-HV MPPT Efficiency 99.9% 99.9% 99.9% Protection DC Reverse Polarity Protection Integrated Insulation Resistance Protection Integrated DC Switch 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...
- Page 29 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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