Micro-grid Control System
STS-400
STS-400 is a microgrid control system designed for commercial and industrial energy storage applications, enabling coordinated operation of the grid, energy storage, and diesel generators to provide flexible and reliable power for diverse C&I microgrid scenarios. It supports seamless switching between on-grid and off-grid modes in less than 20 ms, enabling rapid transition to backup power when grid interruptions occur and ensuring continuous power supply for critical loads. With an integrated system design, the STS-400 combines static transfer, power distribution, circuit protection, surge protection, N-PE switching, and smart metering functions in one solution. No additional power distribution cabinet is required, simplifying system architecture and on-site wiring while reducing system integration complexity and enabling faster installation and deployment.
Product Features
Efficient PV integration, support DC coupling or AC coupling 
Support 110% long-term overload 
Integrated STS module, seamless switching between on-grid and off-grid modes, switching time<20ms 
User-friendly configurable monitoring platform
Parameter List
| STS-400-G/D | STS-400-G | ||
| Grid | Grid Voltage Range[V] | 400±10% | 400±10% |
| Max. Input Power[kW] | 400 | 400 | |
| Automatic Switch Time [ms] | ＜20 | ＜20 | |
| DG | AC Voltage Range[V] | 400±10% | - |
| Max. Input Power[kW] | 400 | - | |
| Automatic Switch Time [ms] | ＜20 | - | |
| ESS | Rated AC Power [kW] | 375 | 375 |
| Rated Charging / Discharging Power [kW] | 375 | 375 | |
| PV access (optional) [kW] | ≤375 | ≤375 | |
| Load | Rated AC Power [kW] | 375 | 375 |
| Rated AC Voltage [V] | 380/400, 3L+N+PE | 380/400, 3L+N+PE | |
Related Products
Micro-grid Control System
STS-400 is a microgrid control system designed for commercial and industrial energy storage applications, enabling coordinated operation of the grid, energy storage, and diesel generators to provide flexible and reliable power for diverse C&I microgrid scenarios. It supports seamless switching between on-grid and off-grid modes in less than 20 ms, enabling rapid transition to backup power when grid interruptions occur and ensuring continuous power supply for critical loads. With an integrated system design, the STS-400 combines static transfer, power distribution, circuit protection, surge protection, N-PE switching, and smart metering functions in one solution. No additional power distribution cabinet is required, simplifying system architecture and on-site wiring while reducing system integration complexity and enabling faster installation and deployment.
Download More
Product Video
Related FAQs
