SPT Series 50–70kW On-Grid PV Inverter
SPT Series (50–70kW) is a high-efficiency, three-phase on-grid solar inverter range, built for large commercial and industrial PV applications. Featuring dual MPPT and IP65 protection, it ensures reliable performance and high capacity.
The SPT Series 50–70kW On-Grid High Power PV Inverter is a high-performance three-phase solar inverter designed for large-scale commercial and industrial PV systems. This on-grid inverter offers maximum energy efficiency, intelligent MPPT control, and durability, making it ideal for large commercial rooftops and industrial solar plants.
Equipped with multiple MPPT trackers, the SPT Series ensures optimal energy harvest from your solar array, even in partial shading conditions. Its wide MPPT voltage range (480–1,000V) and high input voltage (1,100VDC) allow for flexible system design and oversizing up to 150%. The inverter delivers peak efficiency up to 98.6%, reducing energy loss and maximizing ROI.
Housed in an IP65-rated enclosure, the SPT inverter is weatherproof and can operate in temperatures from -30°C to +60°C, ensuring reliable performance in harsh environments. With integrated USB/RS485 communication and optional WiFi/GPRS modules, it offers seamless remote monitoring via mobile app or PC.
Whether you’re powering a large commercial rooftop, industrial facility, or solar plant, the SPT Series combines smart technology with robust design to deliver long-term performance, reliability, and significant energy savings.
| Model | SPT50KTL | SPT60KTL | SPT70KTL | SPT50KTL-H | SPT60KTL-H | SPT70KTL-H |
| PV Input (DC) | ||||||
| Max. input power | 60,000W | 75,000W | 90,000W | 60,000W | 75,000W | 90,000W |
| Max. input voltage | 1,100V | |||||
| Start-up voltage | 250V | |||||
| Rated input voltage | 620V | 720VDC | ||||
| Max. input current per MPPT | 30A | |||||
| Max. short-circuit current per MPPT | 36A | |||||
| MPPT voltage range | 180~1000V | |||||
| Number of MPPTs | 4 | 5 | 6 | 4 | 5 | 6 |
| Number of strings per MPPT | 2 | |||||
| AC Output | ||||||
| Rated output power | 50,000W | 60,000W | 70,000W | 50,000W | 60,000W | 70,000W |
| Max.output apparent power | 55,000VA | 66,000VA | 77,000VA | 55,000VA | 66,000VA | 77,000VA |
| Rated output current | 72.2A | 86.6A | 101A | 60.2A | 72.2A | 84.2A |
| Max. output current | 83.6A | 100.3A | 117A | 67A | 80A | 92.6A |
| Rated grid voltage | 380VAC/400VAC | 480VAC/500VAC | ||||
| Rated grid frequency | 50Hz/60Hz | |||||
| THDi | < 3% | |||||
| Power factor | ≈1 (Adjustable from 0.8 leading to 0.8 lagging) | |||||
| Efficiency | ||||||
| Max. efficiency | 98.5% | 98.6% | 98.5% | 98.6% | ||
| European efficiency | 98.3% | 98.4% | ||||
| Protection | ||||||
| Basic protection | PV reverse polarity AC output overvoltage Anti-islanding PV insulation resistance AC output overcurrent Grid monitoring PV string current monitoring AC output short circuit Residual current (RCD) detection |
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| AFCI | Optional | |||||
| DC switch | Integrated | |||||
| SPD | DC Type ll / AC Type ll | |||||
| Environmental Parameters | ||||||
| Operating temperature | -30℃ to 60℃ | |||||
| Relative humidity | 0 - 100% | |||||
| Altitude | 4,000m(> 2,000m Derating) | |||||
| Ingress protection | IP65 | |||||
| Mechanical Parameters | ||||||
| Dimensions (L×W×H) (mm) | 700×610×298 | |||||
| Weight (kg) | 52 | 55 | 57 | 52 | 55 | 57 |
| Others | ||||||
| Self-consumption (Night） | < 3W | |||||
| Topology | Transformer-less | |||||
| Cooling method | Intelligent fan | |||||
| Display | LED/LCD (Optional) | |||||
| PV input connector | H4/MC4（Optional） | |||||
| AC output connector | OT connector | |||||
| Certifications | IEC/EN 62109; IEC/EN 61000 EN 50549; NB/T32004-2018（CQC） |
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Manual
SPT50-70KTL-Manual-EN-V1.0
Datasheet
SPT50-70KTL-DataSheet-EN
Product Highlights
High yield 110% rating power
Maximum conversion eff iciency: 98.6%
Multiple MPPTs, Max.PV input voltage:1100VDC, Input current per MPPT: 30A
lP65 protection for outdoor use
Built-in Type ll SPD
Optional AFCl function
Optional zero export function
Optional LCD display
Standard USB communication port, WiFi/ GPRS (optional)
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