125KW/261kWh Stars CL261STS On/Off-Grid ESS Cabinet
Stars CL261STS On/Off-Grid ESS Cabinet
Technical Specifications
- Rated Energy: 261 kWh
- Load Power: 125 kW
- Grid Power：250 kW
- Transfer Time: 10 ms
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Key Features
- Integrated STS for seamless grid-to-off-grid switching and uninterrupted power for critical loads
- Modular design with integrated STS and circuit breakers for flexible expansion
- Multi-level active and passive safety protection
- Intelligent operation and maintenance
- Dual-port, tiered power supply for highly reliable power to critical loads
Applications
Data Centers / Medical Facilities / Precision Manufacturing / Emergency Power
Product Parameters
| Model | Stars CL261 | Stars CL261Pro | Stars CL261STS |
| Battery Type | LFP 3.2V/314Ah | ||
| Rated Energy | 261.2KWh | ||
| Battery Configuration | 1P260S | ||
| DC Voltage Range | 728~936V | ||
| Load Power | 125kW | ||
| Grid Power | / | 187kW | 250kW |
| DG Power | / | 187kW | |
| PV Input | / | 250kW(DC),10MPPTs(20S)MC4,150~950V | |
| On/Off-Grid Switch Time | / | 10ms | |
| IP Level | IP55(Complete System) | ||
| Corrosion-Proof Grade | C4H | ||
| Cooling Type | Intelligent Liquid Cooling (with Automatic Refilling) | ||
| Operating Temp.Range | -35℃~55℃(>45℃ Derating) | ||
| Operating Altitude | ≤2000m(>2000m Derating) | ||
| Relative Humidity | 0-95%(Non-condensing) | ||
| Noise | ≤70dB,≤60dB (Silent Version) | ≤75dB | |
| Communication Interface | LAN/RS485 | ||
| Communication Protocol | Modbus,IEC104,MQTT | ||
| Operating Modes | On-Grid,Off-Grid | On-Grid, Off-Grid, On/Off-Grid Switching | |
| Dimensions(W*D*H) | 1012*1350*2270mm(±10mm) | 1515*1353*2262,5mm | |
| Weight | ≤2.5t | ≤2.7t | ≤2.9t |
| Fire Protection System | Pack-level Aerosol+Cluster-level Aerosol+Water Fire Suppression(Optional)+ Explosion Venting(Optional)+Active Early Warming |
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| Cycle Life | ≥8000(EoL70%SOH) | ||
| Certifications | IEC/EN 62619, IEC 62477, IEC 60529, IEC 61000-6-2, IEC 61000-6-4, UN38.3 | ||
| Installation | Floor-Mounted | ||
Frequently Asked Questions (FAQ)
Q1: How does the modular design of the CL261STS support flexible installation?
The CL261STS adopts a modular architecture with the STS system assembly separated from the Stars CL261 energy storage unit, allowing flexible system integration according to project requirements. The independent STS design provides dedicated grid-side, bypass, and load-side connections, enabling easier adaptation to different power configurations and installation scenarios.
Q2: How is the CL261STS different from the standard CL261?
Both share the same 261kWh LFP battery platform, liquid cooling, and IP55 enclosure, but they’re built for different reliability needs. The standard CL261 supports on-grid or off-grid operation for general commercial and industrial use. The CL261STS adds an integrated Static Transfer Switch (STS) with 10ms seamless grid-to-off-grid switching and dual-port tiered power supply, purpose-built for critical loads that cannot tolerate any interruption, such as data centers and medical facilities.
Q3: What certifications does the Stars CL261STS hold?
The Stars CL261STS is certified to IEC/EN 62619, IEC 62477, IEC 60529, IEC 61000-6-2, IEC 61000-6-4, and UN38.3, supporting compliant deployment and transport in European and international markets.
Q4: What factors affect the price of the CL261STS cabinet?
Pricing depends on factors such as order volume, optional add-ons (explosion-proof ventilation, water-based fire protection, canopy), destination shipping and import costs, and any region-specific certification requirements. Share your project details and our team will provide a tailored quotation.
Q5: What’s the typical lead time for the CL261STS?
As a standard cabinet product, the Stars CL261STS typically ships within 8-12 weeks, with faster delivery available depending on stock availability and destination.
