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STT 4~25kW

STT 4~25kW
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STT 4~25kW

Product catalog summary
Overview: The STT Series is a range of three-phase, on-grid solar inverters with dual Maximum Power Point Trackers (MPPTs), offering a maximum efficiency of 98.6% and IP65 protection. The series supports power outputs from 4kW to 25kW.
Key Features:
  • High reliability with effective heat dissipation and integrated lightning protection for both DC and AC.
  • Adaptability to complex power grids and various installation environments due to high anti-corrosion ability and wide operating temperature and altitude ranges.
  • High yield with a maximum efficiency of 98.6% and European weighted efficiency of 98.2%.
  • Extended working hours enabled by lower start-up voltage and wider MPPT range.
  • Continuous output overloading capacity up to 10%.
  • Compatibility with high-power panels due to a maximum input current of 15A.
  • Support for both wireless and wired internet connections, with remote upgrading capabilities.
  • Easy configuration via an app or OLED display.
Model Specifications:
  • Input power ranges from 6,400W to 40,000W across different models.
  • Consistent start-up voltage of 180V and minimum DC voltage of 150V.
  • Maximum DC input voltage is 1,100V, with a rated DC input voltage of 620V.
  • MPPT voltage range is 160-1000V, with two MPP trackers per model.
  • Output power ranges from 4,000W to 25,000W, with a maximum apparent power equal to the maximum output power.
  • Rated output voltage is 3L/N/PE, 230/400V, with a rated AC frequency of 50/60Hz.
  • Power factor ranges from 0.8 leading to 0.8 lagging, with total harmonic distortion under 3% at rated output power.
Efficiency and Protection:
  • Maximum efficiency ranges from 98.1% to 98.6% depending on the model.
  • MPPT efficiency is consistently 99.9% across all models.
  • Integrated protection features include DC reverse polarity, insulation resistance, surge, over-temperature, residual current, anti-islanding, AC short-circuit, and AC over-voltage protection.
General Data:
  • Dimensions are 550W x 410H x 175D mm, with weights ranging from 23kg to 29kg.
  • Protection degree is IP65, with a self-consumption at night of less than 1W.
  • Operating temperature range is -30°C to 60°C, with a relative humidity range of 0% to 100%.
  • Operating altitude is up to 4000m, with derating above 3000m.
  • Cooling is achieved through natural convection and smart fan cooling, with noise levels under 25dB to 40dB.
  • Display options include OLED and LED, with communication options of RS485, WiFi/GPRS/LAN.
Compliance: The series complies with various international standards including NB/T32004, IEC62109, EN61000, AS/NZS 4777.2, and many others, ensuring broad compatibility and safety.
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Catalog excerpts

STT 4~25kW-1

STT 4~25kW Three Phase | 2 MPPTs | ON Grid High reliability due to good heat dissipation design Integrated lightning protection for both DC and AC SAFE & RELIABLE Adapt to complex power grid High anti-corrosion ability with aluminum alloy die casting technology Wider working temperature and altitude, adapt to various installation environments High yield with Max. 98.6% efficiency European weighted efficiency 98.2% HIGH YIELD Longer working hours due to the lower start-up voltage and wider MPPT range Up to 10% continuous output overloading capacity With a max input current of 15A, compatible with high-power panels Support wireless and wired internet connection (RS485, WiFi/GPRS/LAN optional) Remote upgrading available Fast and easy configuration via App or OL

 Open the catalog to page 1
STT 4~25kW-2

Input Max. Input Power (W) Max. DC Input Voltage (V) Rated DC Input Voltage (V) MPPT Voltage Range (V) Number of DC Inputs per MPPT Output Rated Output Power (W) Max. Output Power (W) Rated Output Voltage (V) Rated AC Frequency (Hz) Max. Output Current (A) Power Factor Max. Total Harmonic Distortion < 3% @Rated Output Power European Efficiency MPPT Efficiency Protection DC Reverse Polarity Protection Insulation Resistance Protection Surge Protection Over-temperature Protection Residual Current Protection Anti-islanding protection Frequency shift, Integrated General Data Dimensions (mm) Weight...

 Open the catalog to page 2

All Ningbo Sunways Technologies Co., Ltd. catalogs and technical brochures

  1. STT 30~60kW
    STT 30~60kW

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  2. STE 5~20kWh
    STE 5~20kWh

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  3. STE 10~50kWh
    STE 10~50kWh

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  4. STE 5~30kWh
    STE 5~30kWh

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  5. STH 15~33kW
    STH 15~33kW

    2  Pages

  6. STH-3K~8KTL
    STH-3K~8KTL

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  7. S T H - 3 ~ 3 . 6 K T L - H S S 、 S T H - 4 . 2 K ~ 8 K T L - H S
    S T H - 3 ~ 3 . 6 K T L - H S S 、 S T H - 4 . 2 K ~ 8 K T L - H S

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  8. STT 80~125kW
    STT 80~125kW

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  9. STT-4K~25KTL-P
    STT-4K~25KTL-P

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  10. STT-4K~25KTL
    STT-4K~25KTL

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  11. STT Series
    STT Series

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  12. STS-7K~11KTL
    STS-7K~11KTL

    2  Pages

  13. STS-3K-6KTL-NS
    STS-3K-6KTL-NS

    2  Pages

  14. STS 3~6KTL-P
    STS 3~6KTL-P

    2  Pages

  15. Sunways Three Phase Storage Inverter with Two MPPT
    Sunways Three Phase Storage Inverter with Two MPPT

    2  Pages

  16. Sunways Single Phase Storage Inverter with Two MPPT
    Sunways Single Phase Storage Inverter with Two MPPT

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  17. STS 1~3.3kW
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*Prices are pre-tax. They exclude delivery charges and customs duties and do not include additional charges for installation or activation options. Prices are indicative only and may vary by country, with changes to the cost of raw materials and exchange rates.