Overview
This document provides technical specifications for the STT Series of three-phase on-grid solar inverters, featuring 8 to 10 Maximum Power Point Trackers (MPPTs) and a maximum efficiency of 98.8%. The series includes models STT-80KTL, STT-100KTL, STT-110KTL, STT-100KTL-HV, and STT-125KTL-HV.
Key Features- Intelligent positioning of abnormal strings with integrated I/V scan function.
- Real-time fault curve recording to enhance operation and maintenance efficiency.
- IP68 intelligent fans for lower operation temperature and longer lifespan.
- Quad-core processor for comprehensive, fast, and efficient information processing.
- High yield with a maximum efficiency of 98.8% and up to 10% continuous output overloading capacity.
- 8/10 MPPT design to reduce PV string mismatch loss.
- DC 2 in 1 connection enabled, compatible with high-power panels.
- Support for wireless and wired internet connections (RS485, WiFi/GPRS/LAN optional).
- Remote upgrading and fast commissioning via App or OLED display.
Input Specifications- Max. Input Power ranges from 128,000W to 200,000W depending on the model.
- Start-up Voltage is 200V for all models.
- Max. DC Input Voltage is 1,100V.
- MPPT Voltage Range is 200-950V.
- Number of MPP Trackers: 8 for STT-80KTL, 10 for others.
- Max. Input Current: 8*32A for STT-80KTL, 10*32A for others.
Output Specifications- Rated Output Power ranges from 80,000W to 125,000W.
- Max. Output Power ranges from 88,000W to 137,500W.
- Rated Output Voltage: 3L/N/PE, 230/400V or 3L/PE, 288/500V.
- Rated AC Frequency: 50/60Hz.
- Max. Output Current: 127A to 174.8A.
- Power Factor: 0.8 leading to 0.8 lagging.
- Max. Total Harmonic Distortion: < 3% at Rated Output Power.
Efficiency- Max. Efficiency: 98.8% for all models.
- European Efficiency: 98.3%.
- MPPT Efficiency: 99.9%.
Protection Features- Integrated DC Reverse Polarity Protection, Insulation Resistance Protection, Surge Protection, Over-temperature Protection, Residual Current Protection, Anti-islanding protection, AC Short-circuit Protection, and AC Over-voltage Protection.
- Optional DC Switch.
General Data- Dimensions: 975W*680H*290D mm.
- Weight: 79 kg for STT-80KTL, 82 kg for others.
- Protection Degree: IP66.
- Self-consumption at Night: < 1W.
- Operating Temperature Range: -30°C to 60°C.
- Relative Humidity: 0% to 100%.
- Operating Altitude: 4000m (derating above 3000m).
- Cooling: Smart Fan Cooling.
- Display: OLED & LED.
- Communication: RS485, WiFi/GPRS/LAN (Optional).
Compliance
The inverters comply with various international standards including NB/T 32004, IEC62109, IEC62116, VDE 4105, VDE 0126, AS4777, C10/11, CEI 0-21, RD1699, NBR16149, IEC61727, IEC60068, IEC61683, EN50549, and EN61000.
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