Sigenergy’s utility solution is designed to maximize project value across diverse site and grid conditions. Focused on LCOE optimization, system reliability, and intelligent O&M, it enables stable operation, lower system costs, and stronger long-term returns across the entire project lifecycle.
Ultimate LCOE
Driven by a system-level design objective, Sigen PV Inverters are designed to break through traditional inverter power limits while enabling system-level AC and DC voltage upgrades.
By combining a true string inverter architecture with an advanced multi-MPPT design, the solution addresses PV string mismatch challenges. The design unlocks higher energy yield and significantly reduces the initial capital cost of utility-scale PV systems.
Leading Long-String Design
1650 V Max. DC Input Voltage
Short-String
28 PV modules per string
32 Strings per inverter
Long-String
30 PV modules per string
32 Strings per inverter
5.09% Reduction in DC cable usage
Leading Large-Block Design
500 kW+ Max. Output Power
1000 V AC Output Voltage
3.22 MW Standard Block
Comparing with the block using 300 kW+ inverters Equipments reduced by 36% and AC-side cabling reduced by 35%
5.06MW Standard Block
With larger block architecture, BOS costs are further reduced. For a 100 MW plant, a 5 MW+ block can reduce BOS by 47.9% compared with a 3 MW+ block configuration.*
*The BOS is measured in specific scenarios
True-string Inverter with Multi-MPPT Design
18 Sigen PV 500H1 MPPTs
2 PV Strings per MPPT
Complex Terrain
Multi-MPPT Design, adapt to Various Application Scenarios
~1.5%* Higher Yield
Withstand Mismatched orientation
Withstand Inter-row shading
Withstand Edge shading
*The data is based on controlled simulation conditions. Actual results may vary due to differences in products, software versions, usage conditions, and environmental factors. Please refer to actual conditions.
Upgraded Core Architecture
Innovative SiC Applications
Developed with leading power device manufacturers, the design optimizes module layout and thermal management. Compared with conventional Si modules, junction temperature is reduced by 5–10°C, while voltage capability reaches 2000 V+.
Upgraded Core Architecture
Advanced Thermal Control
Directed airflow, Eliminating internal airflow interference Zigzag heat exchange, lower chamber temperature
Safe & Reliable
Comprehensive DC-side fault monitoring and protection build a multi-layer active safety system. With rapid detection and response, electrical fault risks are minimized to enhance overall plant safety and reliability.
Designed for extreme environments including outside, salt spray, and sandstorms, the system delivers superior environmental resilience and stable performance, ensuring long-term reliable operation of large-scale solar plants.
Complete Coverage of DC-side Faults
Establishing an end-to-end security protection system
Utility-level AFCI*
The system features a fault detection range extending up to 500 m, capable of covering both long and short string configurations to accommodate photovoltaic power station designs of varying scales. Upon detecting an arc fault, the system rapid identification and disconnection, effectively suppressing sustained arc combustion and mitigating fire hazards.
* AFCI is optional.
Reverse Polarity Protection
The system employs a two-string for per MPPT architecture design. In the event of abnormal wiring conditions such as reverse connection within a string, the limited circuit current results in a smaller fault current, thereby minimising the risk of significant current surges or sustained arcing. This design reduces electrical and thermal hazards under abnormal operating conditions, enhancing the system's operational safety and reliability.
PV Terminal Temperature Detection
The AC/DC terminals are fixed on board, enhancing temperature sampling accuracy and enabling sensitive detection of early-stage temperature rises. The system implements three-stage graded protection based on temperature rise thresholds and rate-of-change criteria, preventing unnecessary shutdowns while ensuring safety and improving power plant availability.
Higher Reliability
Built to Dominate All Environments
IP66
Dual-compartment design with superior dustproof and waterproof capabilities, ensuring stable operation in complex and harsh outdoor environments such as wind, sand, rain and snow.
C5-H*
Anti-corrosion coating treatment ensures long-term structural stability and reliability in demanding corrosive environments such as high salt spray and high humidity.
* C5-H is optinal.
Type I+II*
DC-side Type I+II lightning protection capability, capable of withstanding direct lightning strikes or intense lightning surge impacts, effectively enhancing equipment operational safety in thunderstorm environments.
* TYPE I+II is optional.
Optimized O&M
Through intelligent monitoring, data analysis and remote diagnostic capabilities, precise equipment condition assessment and rapid fault identification are achieved, enhancing operational response efficiency and issue resolution speed.
With data-driven management at its core, power plants achieve more efficient and refined operational management, continuously improving operational efficiency and long-term power generation revenue.
Challenge 1 Numerous Devices, Slow Positioning
Geo-tagging
A positioning map is available in the mySigen App with registered inverter details, enabling rapid localization of inverters.
Accurate positioning, avoid unnecessary detours.
Challenge 2 Difficulties in Fault Rectification
MPPT-level ISO Fault Positioning
Multi-MPPT design for enhanced fault location accuracy; insulation faults require inspection of only two strings.
Rapid detection, accelerating fault rectification by 15 times.
Challenge 3 O&M Management Often Proves Difficult
Check-in Inspections
mySigen App integrates proximity check-in functionality, enabling in-range verification within 3-5 metres of inverters to enhance personnel assessment management efficiency.
Precision management, efficiency maintained.
Sigen PV 500H1/400H2/370H2
Max. DC input voltage: 1500 V
Number of MPP. trackers: 18 / 14 / 14
Number of PV strings per MPPT: 2
Max. input current per MPPT: 40 A
Nominal output active power*: 460 / 360 / 333 kW
Nominal output voltage: 1000 / 800 / 800 Vac
Max. efficiency: 99.1% / 99.0% / 99.0%
Dimensions (W / H / D):1080 / 875 / 409 mm
Ingress protection rating: IP66
*The ambient temperature is 40℃.
Related Documents
Datasheet
Brochure