Product Features
The STS200/500/800-C100 energy storage STS (Static Transfer Switch) cabinet is designed for commercial and industrial applications that demand uninterrupted power. Typical use cases include data centers, medical facilities, telecom base stations, and solar-plus-storage microgrids.
This cabinet ensures critical loads remain powered by automatically switching between utility and battery energy storage in less than 20 milliseconds. During grid outages, the system can seamlessly transition to battery or solar supply, preventing downtime, equipment damage, or data loss.
It integrates AC power aggregation, bidirectional metering, auxiliary power supply, and remote monitoring in a compact cabinet. The system can connect single or multiple energy storage cabinets in parallel, making it ideal for building high-reliability “solar-storage + backup power” solutions.
Millisecond-Level Seamless Switching
The cabinet uses static transfer switch (STS) technology to switch between grid and energy storage in ≤20ms. This fast response ensures IT servers, precision instruments, medical devices, and other sensitive loads continue running without interruption.
Compact, Fully Integrated Cabinet Design
The STS, UPS, smart meters, circuit breakers, optional ATS, and communication modules are all built into a single standard cabinet. This saves space, simplifies transport, and reduces installation complexity.
Comprehensive Electrical Protection
Multiple protection mechanisms are built in, including overcurrent, overvoltage, short circuit, and reverse flow prevention. Redundant power paths ensure critical loads stay powered under fault conditions.
Industrial-Grade Environmental Adaptability
With IP55 protection and operating range from -15°C to +45°C, the cabinet supports outdoor or harsh industrial environments. Its fan-assisted cooling ensures stable operation in high humidity and dusty conditions.
Smart Remote Monitoring & Maintenance
Ethernet and RS485 communication interfaces allow real-time transmission of voltage, current, power, and harmonics data. The cabinet can be connected to cloud platforms for remote monitoring, alerts, and predictive maintenance.
Flexible Expansion & Compatibility
Supports up to 5 parallel energy storage cabinets (maximum 1600A AC current). Compatible with most commercial solar inverters and load types, making it suitable for a wide range of medium and large-scale projects.
Reliable Auxiliary Power Supply
Integrated 1kVA–6kVA UPS provides stable power for control systems, communication modules, and monitoring devices. This ensures the system continues to operate even during utility power fluctuations.
| Energy Storage Cabinet Side Parameters | STS200-C100 | STS500-C100 | STS800-C100 |
|---|---|---|---|
| Maximum Number of Connected Energy Storage Cabinets | 1 | 3 | 5 |
| Maximum Current of Energy Storage Cabinet | 225A | 3*225A | 5*225A |
| Rated Power of Energy Storage Cabinet | 100kW | 3*100kW | 5*100kW |
| Grid Side Parameters | |||
| Number of Grid Connection Points | 1 | ||
| Maximum Grid Connection Current | 400A | 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 | 630A | 1000A |
| Recommended Maximum PV Inverter Input Power | 100% × Rated Power of Energy Storage Cabinet | ||
| Load Requirements | |||
| Maximum Load Current | 250A | 630A | 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 is the purpose of the STS energy storage transfer cabinet?
It ensures continuous power for critical loads by automatically switching between the utility grid and battery energy storage in milliseconds. Ideal for data centers, hospitals, telecom sites, and microgrids.
How fast does the cabinet switch between grid and battery?
Switching occurs in ≤20 milliseconds using static transfer switch (STS) technology, keeping sensitive equipment like IT servers or medical devices powered without interruption.
Can multiple energy storage cabinets connect to one STS cabinet?
Yes. It supports up to 5 battery storage cabinets in parallel, with a maximum AC current of 1600A, allowing scalability for larger commercial or industrial projects.
Does the STS cabinet support remote monitoring?
Yes. Equipped with Ethernet and RS485 interfaces, it can upload real-time voltage, current, power, and harmonics data to a cloud platform, enabling remote monitoring and alarm management.
Can it operate outdoors and in harsh conditions?
Yes. With IP55 protection and a temperature range from -15°C to +45°C, it is suitable for outdoor industrial environments. The fan-assisted cooling keeps the system stable in dusty or humid conditions.
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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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.
AnengJi supplies commercial and industrial battery energy storage systems, AC/DC EV charging equipment and integrated solar-storage-charging solutions. Project support can include system engineering, equipment integration, OEM/ODM manufacturing, factory testing, delivery coordination and commissioning support according to the agreed scope.
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