Delivering reliable, high-efficiency power conversion systems for industrial & commercial energy storage. Modular, certified, and deployed in 50+ countries globally.
| Product model | Neptune-P250 | Neptune-P375 | Neptune-P500 |
| Technical Specification | |||
| DC(PV Input) | |||
| DC Voltage Range | 600-1000V | 600-1000V | 600-1000V |
| Max Num. of Battery Input | 2 | 3 | 4 |
| Max charge/discharge current | 216A*2 | 216A*3 | 216A*4 |
| Max charge/discharge power | 125kW*2 | 125kW*3 | 125kW*4 |
| AC(on grid) | |||
| Rated Output Apparent Power | 250kVA | 375kVA | 500kVA |
| Rated Output Current(A) | 364A | 546A | 728A |
| Max.Input Apparent Power | 250kVA | 375kVA | 500kVA |
| Max.AC Input Current | 364A | 546A | 728A |
| Rated Voltage | 400V | 400V | 400V |
| Voltage Range | 300-460V | 300-460V | 300-460V |
| Rated Frequency(Hz) | 50/60Hz | 50/60Hz | 50/60Hz |
| Frequency Range(Hz) | 45-55Hz/55-65Hz | 45-55Hz/55-65Hz | 45-55Hz/55-65Hz |
| PF | >0.99（-0.8~0.8） | >0.99（-0.8~0.8） | >0.99（-0.8~0.8） |
| THDi | <3%(@rated power) | <3%(@rated power) | <3%(@rated power) |
| AC connection | 3W+N+PE | 3W+N+PE | 3W+N+PE |
| AC(off-grid) | |||
| Rated Output Power | 250kW(@Resistive load) | 375kW(@Resistive load) | 500kW(@Resistive load) |
| Rated Output Voltage | 400V | 400V | 400V |
| Rated Output Current(A) | 364A | 546A | 728A |
| Rated Frequency(Hz) | 50/60Hz | 50/60Hz | 50/60Hz |
| THDu | <3%(@linear load) | <3%(@linear load) | <3%(@linear load) |
| Overload capability | 120%-1min | 120%-1min | 120%-1min |
| System Data | |||
| Build-in transformer | No | ||
| IP level | IP54 | ||
| Cooling method | Intelligent air cooling | ||
| Operating Temperature Range | -25~60℃（45~60℃ derating, derating factor 5%/℃） | ||
| Storage Temperature Range | -25~70℃（no condensation） | ||
| Relative Humidity | 0~95%（no condensation） | ||
| Noise | <75dB(A) @1m | ||
| Maximum Operating Altitude (m) | （derating above 3000m,derating factor 1%/100m） | ||
| AC Lightning protection | Type II | ||
| BMS Communication | RS485/CAN | ||
| Meter Communication | RS485 | ||
| Remote Communication | WLAN/4G/Ethernet | ||
| Display | LED+LCD+APP | ||
| Dimensions(W*D*H) | 1000*1000*1960mm | 1200*1000*2060mm | 1200*1000*2060mm |
| Weight | 900kg | 1900kg | 2100kg |
| Certificate | |||
| IEC 62477-1、IEC 61000-6-2、IEC 61000-6-4、NRS 097-2-1 | |||
| Expand models | |||
| （Neptune-*） Battery input channel other configuration（Neptune-*） | 1 | 1 | 1/2 |
| Product model | Neptune-P125T-SA2 | Neptune-P250T-SA1 | Neptune-P250T-SA2 | Neptune-P375T | Neptune-P500T |
| Technical Specification | |||||
| DC(PV Input) | |||||
| DC Voltage Range | 600-1000V | 600-1000V | 600-1000V | 600-1000V | 600-1000V |
| Max Num. of Battery Input | 1 | 2 | 2 | 3 | 4 |
| Max charge/discharge current | 216A | 216A*2 | 216A*2 | 216A*3 | 216A*4 |
| Max charge/discharge power | 125kW | 125kW*2 | 125kW*2 | 125kW*3 | 125kW*4 |
| AC(on grid) | |||||
| Rated Output Apparent Power | 125kVA | 250kVA | 250kVA | 375kVA | 500kVA |
| Rated Output Current(A) | 182A | 364A | 364A | 546A | 728A |
| Max.Input Apparent Power | 250kVA | 250kVA | 500kVA | 375kVA | 500kVA |
| Max.AC Input Current | 364A | 364A | 728A | 546A | 728A |
| Rated Voltage | 400V | 400V | 400V | 400V | 400V |
| Voltage Range | 300-460V | 300-460V | 300-460V | 300-460V | 300-460V |
| Rated Frequency(Hz) | 50/60Hz | 50/60Hz | 50/60Hz | 50/60Hz | 50/60Hz |
| Frequency Range(Hz) | 45-55Hz/55-65Hz | 45-55Hz/55-65Hz | 45-55Hz/55-65Hz | 45-55Hz/55-65Hz | 45-55Hz/55-65Hz |
| PF | >0.99（-0.8~0.8） | >0.99（-0.8~0.8） | >0.99（-0.8~0.8） | >0.99（-0.8~0.8） | >0.99（-0.8~0.8） |
| THDi | <3%(@rated power) | <3%(@rated power) | <3%(@rated power) | <3%(@rated power) | <3%(@rated power) |
| AC connection | 3W+N+PE | 3W+N+PE | 3W+N+PE | 3W+N+PE | 3W+N+PE |
| AC(off-grid) | |||||
| Rated Output Power | 125kW(@Resistive load) | 250kW(@Resistive load) | 250kW(@Resistive load) | 375kW(@Resistive load) | 500kW(@Resistive load) |
| Rated Output Voltage | 400V | 400V | 400V | 400V | 400V |
| Rated Output Current(A) | 182A | 364A | 364A | 546A | 728A |
| Rated Frequency(Hz) | 50/60Hz | 50/60Hz | 50/60Hz | 50/60Hz | 50/60Hz |
| THDu | <3%(@linear load) | <3%(@linear load) | <3%(@linear load) | <3%(@linear load) | <3%(@linear load) |
| Overload capability | 120%-1min | 120%-1min | 120%-1min | 120%-1min | 120%-1min |
| System Data | |||||
| Build-in transformer | Yes | Yes | Yes | Yes | Yes |
| Build-in STS | Yes | Yes | Yes | No | No |
| Build-in ATS | Yes | Yes | Yes | No | No |
| Transfer between on/off grid with STS | <10ms | <10ms | <10ms | / | / |
| IP level | IP54 | ||||
| Cooling method | Intelligent air cooling | ||||
| Operating Temperature Range | -25~60℃（45~60℃ derating, derating factor 5%/℃） | ||||
| Storage Temperature Range | -25~70℃（no condensation） | ||||
| Relative Humidity | 0~95%（no condensation） | ||||
| Noise | <75dB(A) @1m | ||||
| Maximum Operating Altitude (m) | （derating above 3000m,derating factor 1%/100m） | ||||
| AC Lightning protection | Type II | ||||
| BMS Communication | RS485/CAN | ||||
| Meter Communication | RS485 | ||||
| Remote Communication | WLAN/4G/Ethernet | ||||
| Display | LED+LCD+APP | ||||
| Dimensions(W*D*H) | 1200*1100*2100mm | 1300*1100*2100mm | 1300*1100*2100mm | 1300*1100*2100mm | 1300*1100*2100mm |
| Weight | 1250kg | 1800kg | 1830kg | 2300kg | 2500kg |
| Certificate | |||||
| IEC 62477-1、IEC 61000-6-2、IEC 61000-6-4、NRS 097-2-1 | |||||
| Expand models | |||||
| Equipped with ATS | Neptune-P125T-S2 | Neptune-P250T-S1 | Neptune-P250T-S2 | / | / |
| equipped with STS | Neptune-P125T-A2 | Neptune-P250T-A1 | Neptune-P250T-A2 | / | / |
| Equipped with STS and ATS | Neptune-P125T | Neptune-P250T | / | / | / |
| Battery input channel other configuration（Neptune-*） | / | 1 | 1 | 1 | 1/2 |
Our PCS power conversion system is a multifunctional AC-DC solution designed for commercial and industrial energy storage applications. It offers modular bidirectional power conversion, optional on/off-grid switching, and seamless integration with renewable energy sources, covering a power range from 125kW to 1000kW.The energy storage inverters are manufactured by YUNT, ensuring quality, reliability, and full system compatibility.
The PCS power conversion system efficiently manages energy flow between batteries, renewable sources, and the utility grid. It performs bidirectional AC-DC conversion, charging batteries with excess or off-peak electricity and discharging stored DC power as AC for consumption or grid export. Designed for BESS power conversion system projects, it features advanced monitoring, load management, and seamless integration with renewable energy sources.
Leveraging YUNT’s advanced power electronics and control technology, we provide end-to-end support for energy storage projects—from design and manufacturing to deployment and operation. As a trusted power conversion system manufacturer, we help clients optimize energy usage, reduce costs, and accelerate project timelines.
By choosing YUNT, you can:
Our solutions enable seamless integration of PV, MPPT, and STS/ATS cabinets, empowering you to build customized solar-plus-storage systems that are efficient, reliable, and future-ready.
