| Rated Voltage | 400V |
| Grid/Off-grid Switching Time | <20ms |
| Humidity | 0–95% RH, Non-condensing |
| Cooling Method | Air Cooling |
| Protection Rating | IP55 |
| Operating Altitude | ≤2000 m (Derating Above 2000 m) |
| Grid Type | 3W+N+PE |
The STS200/500/800-C100 Energy Storage STS Transfer Cabinet is designed to provide fast and reliable switching between grid power and battery energy storage systems. This static transfer switch for BESS is ideal for commercial and industrial energy storage, solar microgrids, and critical backup power applications where uninterrupted electricity is essential.
If grid power fails, the energy storage STS transfer cabinet switches to battery backup power in less than 20 milliseconds, allowing connected loads to continue operating without interruption. The cabinet also integrates AC power distribution, bidirectional energy metering, and 4G remote monitoring.
Dedicated interfaces for solar inverters and critical loads allow solar generation to continue supplying power during off-grid operation. This improves system resilience and supports greater energy independence for modern BESS and microgrid projects.
Millisecond Seamless Power Transfer
Provides grid-to-battery switching in ≤20ms. This seamless power transfer protects sensitive equipment such as data centers, hospitals, and precision manufacturing systems.
Highly Integrated Static Transfer Switch Design
Combines the static transfer switch (STS), UPS interface, smart energy meter, circuit breakers, optional ATS, and communication modules in a compact cabinet. This integrated design simplifies deployment in commercial BESS and microgrid systems.
Redundant Electrical Safety Protection
The STS transfer cabinet uses dual power paths and reinforced protection for critical components. This ensures continuous power delivery during switching or system faults.
Smart Monitoring and Flexible System Integration
Supports 4G communication for real-time monitoring, alarm notifications, and energy data reporting. Reserved solar and load interfaces allow flexible integration with battery energy storage systems and renewable energy projects.
The energy storage STS transfer cabinet is widely used in applications that require reliable and seamless switching between utility power and battery storage systems.
Commercial & Industrial Battery Energy Storage Systems
Maintains continuous power for factories, office buildings, and commercial facilities during outages or grid instability.
Solar + Storage Microgrids
Supports stable operation between solar generation, battery storage, and loads. Improves energy independence and system reliability.
Data Centers and IT Infrastructure
Provides ultra-fast switching to backup battery power, preventing data loss and operational downtime.
Healthcare and Critical Facilities
Ensures uninterrupted electricity for hospitals, laboratories, and mission-critical infrastructure.
Telecommunication Networks
Delivers dependable backup power for telecom base stations and communication control systems.
| 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 | ||
Our liquid-cooled energy storage cabinet can be customized to meet the real requirements of projects across Europe.
Grid Compliance, Country by Country
Designed to meet local interconnection standards including EN 50160 and VDE-AR-N 4110 / 4120, so your system passes utility requirements without added redesign.
Your Brand, Front and Center
Add your company logo to the cabinet exterior or the HMI interface for a consistent, professional project look on site.
Ready for Harsh Environments
Rated IP55 or IP65. Operates from –20°C to +55°C. Optional anti-corrosion coating available for coastal or high-humidity locations.
Plug-and-Play Integration
Supports open protocols like Modbus, CAN, and IEC 61850. Easy to connect with PV systems, generators, or existing energy management systems.
Built around your brand and your site requirements. Fast to deploy. Easy to run.
