Description

Sungrow PowerStack ST510CS-4H | C&I Energy Storage System 514 kWh – 125 kW with Liquid Cooling

Sungrow PowerStack ST510CS-4H is a BESS (Battery Energy Storage System) specifically engineered for Commercial and Industrial (C&I) projects requiring high energy density, maximum operational safety, and flexible grid integration.

With a nominal capacity of 514 kWh and an AC power output of 125 kW, this system enables self-consumption optimization, peak shaving, energy arbitrage, and industrial backup services with high efficiency and operational stability.

Its integrated architecture with intelligent liquid cooling positions it as one of the most advanced solutions in the 500 kWh industrial energy storage segment.

High-Stability LFP Battery Technology

The ST510CS-4H incorporates LFP (Lithium Iron Phosphate) 3.2 V / 314 Ah cells in a 256S2P configuration, offering:

• Superior thermal stability compared to NMC chemistries
• Extended operational lifetime
• Enhanced safety for industrial environments
• 0–100% depth of discharge
• Nominal voltage range from 691.2 V to 934.4 V

This configuration ensures a robust solution for high-cycle industrial applications.

High Energy Efficiency (Up to 98.5%)

The system integrates a DC/AC converter with efficiency of up to 98.5%, minimizing energy losses and maximizing project profitability.

Main electrical characteristics:

• Nominal AC power: 125 kW
• Nominal voltage: 400 V
• Frequency: 50 / 60 Hz
• AC voltage range: 340 – 440 V
• Adjustable power factor (1.0 leading to 1.0 lagging)
• THD ≤ 3%

Supports On-Grid, Off-Grid and automatic switching, adapting to multiple industrial scenarios.

Intelligent Liquid Cooling with AI Control

One of the key differentiators of the PowerStack ST510CS-4H is its liquid cooling system with precise thermal equalization:

• Cell temperature difference ≤ 2.5 ℃
• 33% reduction in daily thermal losses thanks to AI-controlled thermal balance
• Improved stability under high-load conditions

This results in lower degradation rates and extended system lifespan.

Advanced Multi-Level Safety for Industrial Applications

The ST510CS-4H is designed with a comprehensive safety architecture:

• AI-monitored cell health diagnostics
• Three-level overcurrent protection (PACK, RACK, and PCS)
• Three-level fire prevention system
• Integrated combustible gas, smoke, and heat detectors
• Hot aerosol fire suppression system

Compliant with international standards including:
IEC 62619, IEC 63056, IEC 62040, IEC 62477, IEC 61000, IEC 62933 and UN 38.3.

Scalability for Large-Scale C&I Projects

The system allows:

• Up to 25 units in parallel in On-Grid mode
• Up to 10 units in parallel in Off-Grid mode

This enables multi-MWh energy storage configurations for industrial parks, logistics centers, and high-consumption facilities.

Key Technical Specifications

• Nominal capacity: 514 kWh
• Nominal power: 125 kW
• Dimensions: 2152 × 2470 × 1610 mm
• Weight: ≤ 5,300 kg
• Protection rating: IP55
• Operating temperature: -30 ℃ to 50 ℃ (derating above 45 ℃)
• Maximum altitude: 3,000 m
• Noise level: ≤ 65 dB @ 1 m
• Communication: Ethernet / Modbus TCP

Recommended Applications

• Industrial peak shaving
• Demand management
• Backup power for critical processes
• Integration with C&I photovoltaic plants
• Microgrids
• Industrial self-consumption optimization