Sigenergy Utility PV Solution

Ultimate LCOE | Safe & Reliable | Optimized O&M

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.

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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.

1650 V

Max. DC Input Voltage

1000 V

AC Output Voltage

500 kW+

Max. Output Power

Ultimate LCOE

1650 V

Max. DC Input Voltage

Leading Long-String Design

shot term

32

Strings per inverter

28

PV modules per string
long term

30

PV modules per string

32

Strings per inverter

5.09%

Reduction in DC cable usage

500 kW+

Max. Output Power

1000 V

AC Output Voltage

Leading Large-Block Design

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

MPPT design

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

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.

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.

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

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.

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.

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 Inverter

Sigen PV Inverter

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℃.