UTL 350 kVA Utility Scale MPPT On Grid Solar Inverter
| Particular | Description |
| Model | UTL-350-UG-HV |
| Rated Power | 350 kVA |
| Max Efficiency | 99.03% |
| DC System Voltage | 1500 V |
| MPPT Configuration | 6 MPPTs / 30 Strings |
| MPPT Voltage Range | 500 – 1500 V |
| Protection Degree | IP66 |
| Communication | Modbus RTU / TCP, PLC (Optional) |
High-Efficiency 1500V Utility-Scale Solar Inverter for Large Commercial & Industrial Projects
The UTL-350-UG-HV is a next-generation 350 kVA on-grid solar inverter engineered for utility-scale and large C&I solar power plants. Designed to work seamlessly with high-power bifacial and TOPCon solar panels, this inverter delivers maximum energy yield, advanced grid support, and industrial-grade safety even in the most demanding environments.
Data Sheet
Features
High Efficiency & Maximum Energy Yield
The UTL-350-UG-HV is optimized for modern high-capacity solar modules, ensuring superior performance across varying irradiance conditions.
Up to 99.03% maximum efficiency
- Up to 99.03% maximum efficiency
- European efficiency: 98.80%
- Wide MPPT voltage range: 500–1500 V DC
- Start-up voltage: 550 V
- Supports bifacial & TOPCon solar panels
- Designed for high DC/AC ratio plants
This ensures higher generation per MW installed and faster ROI for utility-scale projects.
Advanced Safety & Continuous Monitoring
Built with multi-layer protection and real-time diagnostics, the inverter ensures safe and stable plant operation throughout its lifecycle.
- IP66 ingress protection (dust & water-resistant)
- Over / under voltage protection
- DC reverse-polarity & DC isolation protection
- Grid monitoring & DC injection monitoring
- Back-feed current monitoring
- Residual current detection
- Over-temperature protection
- Active anti-islanding (frequency shift method)
- Optional Type-I & Type-II SPD on DC side
- Type-II SPD on AC side
- Effective Anti-PID protection* (external)
Intelligent Design & Grid Support Features
The inverter integrates smart power electronics and grid-support functions required for modern utility grids.
- AC terminal temperature detection
- Night-time SVG voltage regulation
- Adjustable power factor: 0.8 lagging to 0.8 leading
- THDi < 3% at rated power
- Smart LED indication for quick diagnostics
- Built-in AC auxiliary power supply (APS)
Flexible System Design & Scalability
Designed for large plants, the inverter offers unmatched flexibility in DC string configuration.
- 6 MPPTs
- 5 strings per MPPT (30 strings total)
- Max DC input voltage: 1500 V
- Max DC input current per MPPT: 75 A
- Max short-circuit current per MPPT: 115 A
- Ideal for large ground-mounted & rooftop plants
Communication & Smart Monitoring
Seamless integration with SCADA and plant monitoring systems.
- Modbus RTU / TCP
- SunSpec compliant
- Power Line Communication (PLC) – Optional
- Optional Wi-Fi / LAN / 4G / PLC
- 24×7 remote performance monitoring & fault alerts
FAQs
How does a 1500V inverter improve overall project economics?
A 1500V inverter allows longer string lengths, which reduces the number of strings, DC cables, and combiner boxes required in a solar plant. This directly lowers Balance of System (BOS) costs and simplifies installation, making it especially beneficial for MW-scale and utility projects.
Is this inverter suitable for future module upgrades?
Yes. The inverter architecture is designed to support newer high-wattage solar modules, including bifacial and advanced cell technologies. This makes it easier for plant owners to upgrade modules in the future without changing the inverter platform.
How does multiple MPPT design help in real-world installations?
In large solar plants, panel orientation, shading, or soiling may vary across sections. Multiple MPPTs allow each group of panels to operate independently, ensuring better energy harvest and reducing losses caused by mismatch conditions.
Can this inverter support grid requirements that change over time?
Modern grids increasingly demand voltage regulation, power factor control, and reactive power support. This inverter includes intelligent grid-support features that help plants comply with evolving grid codes without additional external equipment.
What kind of maintenance does a utility-scale inverter typically require?
Utility-scale inverters are designed for minimal routine maintenance. Periodic visual inspection, thermal checks, and monitoring-based diagnostics are usually sufficient. Smart monitoring helps detect issues early, reducing downtime and on-site intervention.
Is this inverter suitable for harsh or remote project locations?
Yes. The rugged enclosure and wide operating temperature range make it suitable for deserts, coastal areas, and remote solar parks. Smart cooling and industrial-grade components ensure stable performance even in challenging environmental conditions.
What type of projects benefit most from this inverter?
This inverter is ideal for utility-scale solar parks, open-access projects, captive power plants, and large industrial rooftops where high efficiency, scalability, and long-term reliability are critical.
How does remote monitoring help plant owners and EPCs?
Remote monitoring enables real-time performance tracking, fault alerts, and historical data analysis. This helps EPCs optimize O&M activities, reduce response time, and improve plant availability without constant site visits.
Technical Specification
| Particular | Description |
| Max. PV Input Voltage | 1500 V |
| Nominal PV Voltage | 1080 V |
| Operating Voltage Range | 550 – 1500 V |
| MPPT Voltage Range | 500 – 1500 V |
| Start-up Voltage | 550 V |
| No. of MPPTs | 6 |
| Strings per MPPT | 5 |
| Max Short-Circuit Current per MPPT | 115 A |
| Max Output Apparent Power | 350 kVA |
| Nominal AC Voltage | 3 / PE, 800 V |
| Nominal AC Frequency | 50 / 60 Hz |
| THDi (Rated Power) | < 3% |
| Cooling Method | Smart Cooling |
| Dimensions (W × H × D) | 1225 × 825.5 × 369.1 mm |
| Net Weight | 130 kg |
| Operating Temperature | −30°C to +60°C |
| Protection Class | IP66 |
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