Product Features
The Large-Capacity Energy Storage STS Cabinet (STS250/500/800-C125) is designed for high-power liquid-cooled battery systems in commercial and industrial applications. This STS transfer cabinet ensures millisecond switching between grid and battery, supports solar-storage-load coordination, and integrates UPS, AC distribution, and remote monitoring for multi-MWh projects.
It provides millisecond switching (≤20ms) between grid and battery, ensuring uninterrupted operation for high-demand loads. Dedicated PV inverter interfaces allow solar energy dispatch even during grid outages, enabling “solar-storage-load” synergy in large-scale installations.
Fully integrated with AC aggregation, bidirectional metering, UPS, 4G communication, and auxiliary power management, this cabinet acts as the central control unit for high-reliability energy switching in large-scale liquid-cooled battery deployments.
High-Power, Millisecond Switching
Static Transfer Switch (STS) supports 250A–800A rated current, optimized for large liquid-cooled battery systems. Grid-to-battery transfer occurs in ≤20ms, keeping high-power commercial loads running without interruption.
Deep Solar-Storage Coordination
Dedicated PV inverter and critical load interfaces allow solar dispatch in off-grid mode. This enhances energy self-consumption, improves system resilience, and allows flexible operation for multi-MWh projects.
Full Redundancy for Critical Loads
Dual power paths combined with an integrated UPS provide full backup. Critical loads remain powered even if the main supply fails, ensuring high availability for commercial, industrial, or microgrid hubs.
Compact, High-Density Integration
STS modules, smart meters, circuit breakers, optional ATS, and communication units are fully integrated into a single standard cabinet. This allows parallel deployment with multiple large-capacity storage cabinets.
Smart Remote Operation & Monitoring
4G wireless communication enables real-time monitoring of voltage, current, switching state, and alarms. Connect to cloud platforms for centralized monitoring, alerts, and remote maintenance.
Industrial-Grade Environmental Reliability
IP55 protection and an operating range of -15°C to +45°C make this cabinet suitable for outdoor and industrial environments, ensuring reliable performance under dust, humidity, or high temperatures.
Commercial & Industrial Backup Power – Protect critical loads like manufacturing lines, data centers, and hospitals.
High-Capacity Solar-Plus-Storage Plants – Enables seamless grid-to-storage switching while dispatching PV power.
Microgrid Control Hubs – Acts as the central STS unit for campus or industrial microgrids.
Critical Infrastructure – Telecom sites, server farms, and industrial facilities requiring uninterrupted power.
Large Liquid-Cooled Battery Systems – Scalable solution with parallel cabinets for multi-MWh projects.
| Energy Storage Cabinet Side Parameters | STS250-C125 | STS500-C125 | STS800-C125 |
|---|---|---|---|
| Maximum Number of Connected Energy Storage Cabinets | 1 | 2 | 4 |
| Maximum Current of Energy Storage Cabinet | 250A | 2*250A | 4*250A |
| Rated Power of Energy Storage Cabinet | 125kW | 2*125kW | 4*125kW |
| Grid Side Parameters | |||
| Number of Grid Connection Points | 1 | ||
| Maximum Grid Connection Current | 500A | 1000A | 1600A |
| Rated Voltage | 400V | ||
| Voltage Range | 400V±15% | ||
| Grid Type | 3W+N+PE | ||
| Grid Frequency | 50/60Hz | ||
| Grid/Off-grid Switching Time | <20ms | ||
| PV Input Requirements | |||
| Maximum PV Port Current | 250A | 500A | 1000A |
| Recommended Maximum PV Inverter Input Power | 100% × Rated Power of Energy Storage Cabinet | ||
| Load Requirements | |||
| Maximum Load Current | 250A | 500A | 1000A |
| Recommended Maximum Load Power* | 70% × Rated Power of Energy Storage Cabinet | ||
| Auxiliary Equipment Parameters | |||
| UPS Specifications | 1kVA | 3kVA | 6kVA |
| Surge Protective Device (SPD) | Level II | ||
| Metering Accuracy | 0.5S | ||
| Automatic Transfer Switch (ATS) | option | ||
| General Parameters | |||
| Dimensions (W × D × H) | 800×1350×2400 mm | 1000×1350×2400 mm | 1200×1350×2400 mm |
| Weight | 500kg | 550kg | 1080kg |
| Altitude | < 2000 m (Derating Above 2000 m) | ||
| Operating Temperature | -15℃~45℃ | ||
| Humidity | 0–95% RH, Non-condensing | ||
| Cooling Method | Air Cooling | ||
| Protection Rating | IP55 | ||
| Communication | Ethernet/RS485 | ||
What type of systems does the C125 cabinet support?
Large-capacity liquid-cooled battery systems, including 214kWh and 261kWh LP series, for commercial, industrial, and microgrid loads.
How fast does the STS cabinet switch between grid and battery?
≤20 milliseconds using static transfer switch technology, keeping high-power loads uninterrupted.
Can it dispatch solar PV during grid outages?
Yes. Dedicated PV inverter interfaces allow off-grid solar power to supply critical loads, increasing system self-consumption and resilience.
How many energy storage cabinets can connect in parallel?
Multiple large-capacity cabinets can connect, scaling to multi-MWh systems for industrial and commercial projects.
Can it operate outdoors in harsh conditions?
Yes. IP55 protection and a -15°C to +45°C operating range support outdoor and industrial deployments reliably.
Commercial and Industrial Battery Energy Storage Systems (C&I BESS) are designed to help businesses manage energy more efficiently and maintain stable power supply. These systems store electricity and discharge it during peak demand or grid instability, providing fast, clean, and reliable energy support for daily operations.
Battery energy storage enables peak shaving and load shifting, helping businesses reduce electricity costs and demand charges. It also delivers reliable backup power during outages, protecting critical equipment and minimizing downtime. When integrated with solar or other renewable sources, C&I BESS improves energy utilization and reduces dependence on diesel generators.
Due to higher power demand and system requirements, commercial and industrial energy storage is typically deployed in factories, logistics centers, EV charging hubs, commercial buildings, data centers, and solar-plus-storage projects where stable, scalable, and high-availability power is essential.
AnengJi provides scalable commercial and industrial battery energy storage solutions with flexible capacity configurations and seamless integration into existing energy systems. Designed for long-term reliability and easy deployment, our C&I BESS helps businesses lower operating costs, enhance energy resilience, and support sustainable growth.
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ht926476@gmail.com2026-02-13 04:57:522026-02-13 04:59:25EPS Transfer Cabinet (125/375/750-C) | Reliable Backup Power Switch
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Charging Station Engineer2026-02-13 03:29:142026-02-13 03:59:09STS200/500/800-C100 Energy Storage STS Transfer Cabinet | Commercial & Industrial Backup Power
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Charging Station Engineer2026-02-13 03:02:552026-02-13 03:03:44Low Voltage Energy Storage Grid-Tie Cabinet | Commercial Battery Storage Distribution PanelWe’re here to help you build a more efficient and resilient energy future—without unnecessary operating costs. Every battery energy storage system we deliver meets strict international standards, including CE, CB, TUV, UL, IEC, and RoHS. Safe, stable, and engineered for long-term performance.
Our energy storage specialists work with you to design the right C&I BESS solution for your project. Whether you’re deploying storage for factories, commercial buildings, EV charging hubs, microgrids, or solar-plus-storage systems, we support you through system sizing, energy strategy planning, and deployment options.
Have questions? Contact us by phone or email, or simply fill out the form on the right. Our team will respond within 24 hours with free professional consultation and technical support.
We are China’s leading manufacturer and supplier of electric vehicle charging systems, offering diverse DC and AC product lines for fleets, hotels, OEMs, governments, hospitals, and commercial parking facilities. We provide charging equipment and supporting services across North America, Southeast Asia, Central Asia, and the Russian market.
EPS Transfer Cabinet (125/375/750-C) | Reliable Backup Power Switch