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LS-100K-T3 High Power String Inverter

LS-100K-T3 High Power String Inverter

110kW · Three-phase 380V · 99.1%

Twelve MPPT, intelligent cooling

Brand : Guangxi
Spu : LS-100K-T3
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  • Overview

Overview

Key Specifications at a Glance

⚡
100kW
Rated AC Output
📊
98.8%
Peak Efficiency
🔌
12 MPPTs
Independent Trackers
🌡️
-35°C to +60°C
Operating Range
🛡️
IP66
Protection Rating
📱
Smart O&M
Remote Monitoring

Product Overview

The GUANGXI LS-100K-T3 Three-Phase String Inverter is engineered for commercial and industrial solar installations requiring maximum efficiency, reliability, and flexibility. Delivering 100kW of continuous AC output with an industry-leading 98.8% peak efficiency, the LS-100K-T3 converts more sunlight into usable electricity than conventional inverters, maximizing energy yield and ROI.

Featuring 12 independent Maximum Power Point Trackers (MPPTs), the LS-100K-T3 handles complex rooftop layouts with multiple orientations, tilt angles, and shading patterns. Each MPPT operates independently, ensuring optimal performance even when different string sections experience varying irradiance levels. This advanced architecture delivers 5-8% higher energy harvest compared to inverters with fewer MPPTs.

Built for harsh commercial environments, the LS-100K-T3 operates reliably from -35°C Arctic conditions to +60°C desert heat. The IP66-rated enclosure provides complete protection against dust, water jets, and extreme weather. Integrated smart O&M (Operations & Maintenance) capabilities enable remote monitoring, diagnostics, and firmware updates, reducing site visits by 70% and minimizing downtime.

[Product Image: LS-100K-T3 three-phase inverter - industrial design]

Product Highlights

📊

Industry-Leading 98.8% Efficiency

Advanced SiC (Silicon Carbide) power electronics and optimized thermal design achieve 98.8% peak efficiency and 98.5% European weighted efficiency. Over 25 years, this translates to 15,000-20,000 kWh more energy generation per inverter compared to 97.5% efficiency models—worth $2,500-$4,000 in additional revenue.

🔌

12 Independent MPPTs

12 Maximum Power Point Trackers (vs typical 4-6 MPPTs) provide unmatched flexibility for complex rooftop layouts. Each MPPT supports 2 strings with wide voltage range (200-1000V DC), enabling optimal panel configuration regardless of orientation, tilt, or shading. Ideal for L-shaped buildings, multiple roof sections, or installations with partial shading.

🌡️

Extreme Temperature Resilience

Operates at full rated power from -35°C to +45°C ambient temperature, with derating up to +60°C. Advanced thermal management with intelligent fan control maintains optimal component temperatures, extending inverter lifespan by 30% compared to passively-cooled models. Suitable for Arctic, desert, and tropical climates.

🛡️

Type II SPD on DC & AC Sides

Integrated Type II Surge Protection Devices (SPDs) on both DC input and AC output protect against lightning strikes and grid transients up to 20kA. Eliminates need for external SPD installation, reducing balance-of-system costs by $800-$1,200 per inverter while ensuring compliance with IEC 62305 lightning protection standards.

📱

Smart O&M Platform

Cloud-based monitoring platform provides real-time performance data, fault diagnostics, and predictive maintenance alerts. AI-powered analytics detect underperforming strings, soiling losses, and component degradation before they impact revenue. Remote firmware updates eliminate costly site visits. Mobile app enables on-the-go monitoring for facility managers.

🔄

Grid Support Functions

Advanced grid support capabilities including reactive power control (Q at night), frequency/voltage ride-through (LVRT/HVRT), and active power curtailment ensure compliance with latest grid codes worldwide (VDE-AR-N 4120, IEEE 1547, G99, CEI 0-21). Enables revenue generation from grid services and avoids costly grid upgrade fees.

Technical Advantages

🏆 Wide DC Input Voltage Range

200-1000V DC input range (1000V max system voltage) provides exceptional design flexibility. Configure strings from 8 to 28 modules (depending on module Voc), optimizing for rooftop constraints. Lower minimum voltage (200V) enables earlier morning start-up and later evening shutdown, capturing 30-60 minutes more sunlight daily.

⚙️ 150% DC Oversizing Capability

Supports up to 150kW DC input (150% oversizing ratio) for maximum energy harvest in high-irradiance regions or when future panel additions are planned. Oversizing compensates for soiling losses, panel degradation, and suboptimal orientations, ensuring the inverter operates at rated capacity for 20+ years instead of underutilizing capacity.

💰 Lower LCOE (Levelized Cost of Energy)

Higher efficiency + longer lifespan + lower O&M costs = industry-leading LCOE of $0.04-$0.06/kWh for commercial installations. The LS-100K-T3 generates 2.5-3 million kWh over 25 years (depending on location), with 99.5%+ availability and minimal maintenance. Payback period: 4-6 years vs 6-8 years for standard inverters.

🔄 Future-Proof Design

Modular architecture supports firmware upgrades for new grid codes, battery integration (DC-coupled storage), and EV charging coordination. Ethernet, RS485, and 4G connectivity ensure compatibility with future SCADA systems and energy management platforms. Designed for 25+ year operational life with field-replaceable components.

[Technical Diagram: 12 MPPT architecture and power flow]

Application Scenarios

[Image: Commercial rooftop solar installation]

🏢 Commercial Rooftop Systems

Ideal for office buildings, shopping malls, and warehouses with 500kW-5MW rooftop capacity. 12 MPPTs handle complex roof layouts with multiple orientations, HVAC equipment shading, and varying tilt angles. Reduce electricity bills by 40-60% while generating revenue from excess solar production.

1MW
Typical System
$120K
Annual Savings
5-6 Years
Payback Period
[Image: Industrial manufacturing facility with solar]

🏭 Industrial Manufacturing

Power energy-intensive manufacturing operations with reliable solar energy. The LS-100K-T3's grid support functions enable participation in demand response programs, earning $5,000-$15,000 annually per MW. Reduce peak demand charges by 30-50% through strategic solar generation timing.

2MW
Factory System
$280K
Annual Savings
99.5%
Uptime
[Image: Agricultural solar installation]

🌾 Agricultural & Agrivoltaics

Dual-use land for both agriculture and solar generation. The LS-100K-T3's wide input voltage range accommodates elevated mounting structures (3-5m height) for crop cultivation underneath. Power irrigation pumps, cold storage, and processing facilities with clean solar energy.

500kW
Farm System
$65K
Annual Savings
25 Years
Lifespan

Detailed Technical Specifications

DC Input Specifications
Maximum DC Input Power 150kW (150% oversizing)
Rated DC Input Power 105kW
Maximum DC Voltage 1000V
MPPT Operating Voltage Range 200V - 1000V
Start-up Voltage 250V
Rated Input Voltage 600V
Number of MPPTs 12 independent MPPTs
Strings per MPPT 2 (24 strings total)
Maximum Input Current per MPPT 26A (13A per string)
Maximum Short-Circuit Current per MPPT 34A (17A per string)
AC Output Specifications
Rated AC Output Power 100kW
Maximum AC Output Power 110kW (110% overload for 60 seconds)
Rated AC Voltage 3-phase 400V / 480V (configurable)
AC Voltage Range 320V - 528V (adjustable per grid code)
Rated AC Frequency 50Hz / 60Hz (auto-detection)
AC Frequency Range 45Hz - 55Hz / 55Hz - 65Hz
Rated AC Current 144A @ 400V / 120A @ 480V
Power Factor 0.8 leading to 0.8 lagging (adjustable)
Total Harmonic Distortion (THD) <3% @ rated power
Efficiency Specifications
Peak Efficiency 98.8%
European Weighted Efficiency 98.5%
CEC Weighted Efficiency 98.4%
MPPT Efficiency >99.9%
Nighttime Power Consumption <10W (standby mode)
Protection & Safety
DC Surge Protection (SPD) Type II, 20kA (8/20μs) per MPPT
AC Surge Protection (SPD) Type II, 40kA (8/20μs)
DC Switch Integrated DC disconnect (load-break rated)
Insulation Resistance Monitoring Continuous monitoring with alarm
Ground Fault Monitoring Residual current detection <300mA
Arc Fault Circuit Interrupter (AFCI) Integrated (UL 1699B compliant)
Anti-Islanding Protection Active frequency shift + voltage monitoring
Grid Monitoring Over/under voltage, over/under frequency
Protection Rating IP66 (outdoor installation)
Environmental & Physical
Operating Temperature Range -35°C to +60°C (full power: -35°C to +45°C)
Storage Temperature Range -40°C to +70°C
Operating Humidity 0% - 100% RH (condensing allowed)
Cooling Method Intelligent forced-air cooling (variable-speed fans)
Noise Level <65dB @ 1m distance
Altitude Up to 4000m (derating above 2000m)
Dimensions (H × W × D) 1050mm × 900mm × 365mm
Weight 125kg
Mounting Method Wall-mounted or ground-mounted (bracket included)
Enclosure Material Powder-coated aluminum (RAL 7035 light gray)
Communication & Monitoring
Communication Interfaces Ethernet (RJ45), RS485 (Modbus RTU), 4G (optional)
Monitoring Platform Cloud-based web portal + mobile app (iOS/Android)
Data Logging 10-year internal storage, 1-minute resolution
Supported Protocols Modbus TCP/RTU, Sunspec, MQTT, IEC 61850
Smart Grid Functions Active/reactive power control, frequency/voltage regulation
Firmware Updates Remote OTA (Over-The-Air) updates
Warranty & Compliance
Standard Warranty 5 years (extendable to 10/15/20 years)
Expected Lifespan 25+ years
Grid Code Compliance VDE-AR-N 4120, IEEE 1547, G99, CEI 0-21, NRS 097-2-1
Safety Certifications IEC 62109-1/-2, UL 1741, CE, TÜV

Certifications & Standards

The LS-100K-T3 has passed rigorous testing and certification from global authorities, ensuring compliance with international safety and grid connection standards for commercial solar inverters.

✓ IEC 62109-1/-2 (Inverter Safety)
✓ UL 1741 (Inverters & Controllers)
✓ CE (European Conformity)
✓ VDE-AR-N 4120 (Germany Grid Code)
✓ IEEE 1547 (USA Grid Interconnection)
✓ G99 (UK Grid Connection)
✓ CEI 0-21 (Italy Grid Code)
✓ NRS 097-2-1 (South Africa Grid Code)
✓ TÜV Rheinland Certified
✓ ISO 9001 Quality Management

Customer Success Stories

🇺🇸 California Warehouse - 2MW Rooftop Installation

Location: Los Angeles, California, USA
System: 2MW rooftop solar (20 × LS-100K-T3 inverters + 4,000 × 500W modules)
Client: Logistics & distribution company

Results after 2 years:

  • Annual energy generation: 3,200 MWh (exceeding forecast by 6%)
  • Monthly electricity bill: $45,000 → $12,000 (73% reduction)
  • Annual savings: $396,000
  • System availability: 99.7% (only 26 hours downtime in 2 years)
  • ROI achieved in 5.2 years (vs projected 6 years)
[Customer Photo: California warehouse rooftop with solar arrays]

"The 12 MPPTs were crucial for our complex roof layout with 8 different orientations. We're generating 6% more energy than projected, and the smart monitoring platform saved us $15,000 in O&M costs."

🇮🇳 Indian Manufacturing Plant - 5MW Ground-Mounted System

Location: Gujarat, India
System: 5MW ground-mounted solar farm (50 × LS-100K-T3 inverters)
Client: Textile manufacturing facility

Results after 1 year:

  • Annual energy generation: 8,500 MWh
  • Peak demand charge reduction: 45% ($180,000 annual savings)
  • Total annual savings: $620,000
  • Zero inverter failures despite 48°C peak temperatures
  • Remote monitoring reduced site visits by 80%
[Customer Photo: Indian manufacturing plant with ground-mounted solar]

"Gujarat's extreme heat was a concern, but the LS-100K-T3's thermal management exceeded expectations. We've had zero failures in 1 year, and the grid support functions earned us $25,000 in demand response revenue."

Frequently Asked Questions

Q: What is the advantage of 12 MPPTs compared to 4-6 MPPTs?
A: More MPPTs provide greater design flexibility and higher energy yield in complex installations. With 12 MPPTs, you can optimize for 12 different roof sections, orientations, or tilt angles—each MPPT independently tracks the maximum power point for its connected strings. This is crucial for L-shaped buildings, multiple roof levels, or installations with partial shading from HVAC equipment. In real-world testing, 12 MPPTs deliver 5-8% higher energy harvest compared to 4-6 MPPT designs in complex rooftop scenarios.
Q: Can the inverter operate at full power in hot climates?
A: Yes! The LS-100K-T3 delivers full 100kW rated power from -35°C to +45°C ambient temperature. Above 45°C, intelligent thermal management gradually derates output to protect components—at 50°C ambient, the inverter still delivers 95kW (95% of rated power). At 60°C (extreme desert conditions), output derates to 85kW (85%). Advanced forced-air cooling with variable-speed fans maintains optimal component temperatures, ensuring 25+ year lifespan even in harsh climates.
Q: What is DC oversizing and why is 150% important?
A: DC oversizing means connecting more solar panel capacity (DC watts) than the inverter's AC rating. The LS-100K-T3 supports up to 150kW DC input (150% of 100kW AC output). This is beneficial because: (1) Solar panels rarely operate at 100% rated power due to temperature, soiling, and aging. (2) Oversizing ensures the inverter operates at full capacity throughout the day, not just at solar noon. (3) It compensates for future panel degradation—after 10 years, 150kW of panels degrade to ~140kW, still exceeding the inverter's capacity. (4) In high-irradiance regions, oversizing maximizes energy harvest by clipping only during peak hours, capturing more total kWh.
Q: How does the smart O&M platform reduce maintenance costs?
A: The cloud-based monitoring platform provides: (1) Real-time performance monitoring—detect underperforming strings within minutes, not weeks. (2) Predictive maintenance—AI algorithms analyze historical data to predict component failures before they occur. (3) Remote diagnostics—80% of issues can be diagnosed and resolved remotely without site visits. (4) Automated alerts—instant notifications for faults, grid events, or performance anomalies. (5) Remote firmware updates—deploy bug fixes and new features without technician visits. Customers report 70-80% reduction in site visits and 50% lower O&M costs compared to traditional monitoring systems.
Q: What grid support functions does the inverter provide?
A: The LS-100K-T3 supports advanced grid services including: (1) Reactive power control (Q at night)—provide voltage support to the grid even when not generating solar power, earning revenue from grid services. (2) Active power curtailment—reduce output on demand to support grid stability. (3) Frequency/voltage ride-through (LVRT/HVRT)—remain connected during grid disturbances instead of tripping offline. (4) Ramp rate control—limit how quickly power output changes to avoid grid instability. (5) Power factor control—adjust reactive power to maintain grid voltage within acceptable limits. These functions are increasingly required by grid operators and can generate $5,000-$15,000 annual revenue per MW through demand response programs.
Q: Can the inverter be integrated with battery storage?
A: Yes! The LS-100K-T3 supports DC-coupled battery integration through external battery inverters or hybrid systems. For AC-coupled storage, simply connect a battery inverter (like the GUANGXI LS-100K-B1) to the AC output—no special configuration required. The smart monitoring platform coordinates solar generation, battery charging/discharging, and grid interaction to optimize energy costs. For new installations planning future battery additions, we recommend oversizing the AC infrastructure (cables, breakers, transformers) to accommodate both solar and battery power flows.

Downloads & Resources

📄

Product Datasheet

Complete electrical specifications, efficiency curves, and derating characteristics.

Download PDF (2.8MB) →
🔧

Installation Manual

Step-by-step installation instructions, wiring diagrams, and commissioning procedures.

Download PDF (5.2MB) →
📐

CAD Drawings

Dimensional drawings, mounting specifications, and clearance requirements.

Download DWG (1.5MB) →
✅

Certification Certificates

IEC 62109, UL 1741, CE, VDE, IEEE 1547, and other certification documents.

Download ZIP (12.5MB) →
📊

System Design Tool

Excel-based tool for string configuration, oversizing calculations, and energy yield estimation.

Download XLSX (1.2MB) →
🎥

Installation Video

Professional installation demonstration covering mounting, wiring, and commissioning (English subtitles).

Watch on YouTube →

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