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LFEM-250-783
sanhe
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Model: LFEM-250-783
Installation: Outdoor
Brand: Sanhe / LFEI
The LFEM-250-783 is a 10-ft prefabricated containerized microgrid energy storage system designed for small and medium-scale industrial, commercial, and remote off-grid applications. It integrates a 250kW PCS, 783kWh battery system, 6 MPPT channels (max PV power 378kW), microgrid controller, and distribution equipment into a standard 10-ft container.
The system supports DC-coupled PV input, grid-connected and off-grid operation, and millisecond-level on/off-grid switching. With built-in grid-forming capability and STS fast switching module as standard, it can operate as an independent microgrid power source when the main grid is unavailable. It is ideal for village microgrids, island power systems, industrial park PV-storage, mining off-grid power, and emergency power supply applications.
Intelligent Management
Cloud-edge collaborative control, enhanced by AI intelligent algorithms
Remote monitoring and management, OTA upgrade, intelligent operation and maintenance
Automatic optimization strategy, maximization of economic benefits
Innovative Architecture
Novel DC-coupled architecture, optimized energy efficiency
Multi-source access: wind, solar, diesel, storage, and EV charging
Grid-forming, on/off-grid operation with millisecond-level transfer
Multi-Level Safety Protectioan
Tier-1 Grade A Cells, intrinsic safety at the cell level
Holistic design: safety from cell to system, AI prediction
Partition isolation, multi-sensing, and hierarchical fire linkage
High Integration
Prefabricated & plug-and-play, designed for rapid deployment
Modular architecture, flexible configuration of PCS, MPPT, and battery packs
Unlimited scalability, supports multi-unit paralleling for MW-level expansion
Parameter |
Specification |
Product Model |
LFEM-250-783 |
PV Parameters |
|
Max. PV Input Voltage (V) |
1000 |
Max. PV Power (kW) |
378 |
MPPT Operating Voltage Range (V) |
200–900 |
Number of MPPT Modules |
6 |
Battery Parameters |
|
Battery Specification (Ah) |
LFP314 |
Cluster Configuration |
1P260S |
Number of Clusters |
3 |
Rated Voltage (V) |
832 |
Voltage Range (V) |
728–923 |
Rated Energy (kWh) |
783 |
Charge-Discharge Rate (P) |
0.5 |
Cooling Method |
Intelligent Liquid Cooling |
AC Parameters |
|
Rated Charging/Discharging Power (kW) |
250 |
Max. Charging/Discharging Power (kW) |
275 |
Rated Charge/Discharge Current (A) |
361 |
Rated Grid Voltage (V) |
400 |
AC Connection |
Three-phase four-wire |
Grid Frequency Range (Hz) |
50 |
THDi |
<3% (rated power) |
Power Factor |
>0.99 |
System Specifications |
|
Max. System Efficiency |
>90% |
Cycle Life |
6,000 cycles @ 25°C, 0.5C/0.5C, 90% DoD, 70% EOL |
Dimensions (W×D×H) (mm) |
2438 × 2991 × 2896 |
Weight (t) |
11 |
Isolation Method |
Output isolation |
STS Fast Switching Module |
Standard |
ATS Module |
Optional |
Operating Temperature (°C) |
-20 ~ 55 |
Operating Humidity (RH) |
0% ~ 95% |
Altitude (m) |
≤2000 |
IP Rating |
IP55 |
Fire Protection |
Pack-Level Fire Suppression + Cabin-Level Water Fire Suppression |
Communication Interface |
RS485, Ethernet |
Communication Protocol |
Modbus RTU / Modbus TCP |
Certification |
Status |
UN 38.3 (Transport Safety) |
✅ Certified |
Class Certified |
✅ Certified |
IEC 62619 (Battery Safety) |
✅ Certified |
IEC 62477 (PCS Safety) |
✅ Certified |
CE |
✅ Certified |
Note: Certification documents can be provided upon request. Additional certifications can be arranged based on project requirements.
Application |
Description |
Village Microgrids |
Independent power supply for remote communities |
Island Independent Power |
Reliable power for islands without grid connection |
Industrial Park PV-Storage |
Grid-connected or off-grid PV+storage for industrial parks |
Mining Off-Grid Power |
Independent power supply for remote mining sites |
Emergency Power Supply |
Rapid deployment for disaster relief and temporary sites |
The LFEM-250-783 supports
DC coupling for solar PV integration (6 MPPT channels, max 378kW PV)
Grid-connected operation with PV self-consumption and battery storage
Off-grid / island operation with grid-forming capability
Millisecond-level on/off-grid switching (STS standard)
Multi-source access: PV, diesel generator, storage, and EV charging
Parallel expansion with multiple containers for MW-level capacity
A: The main differences are power, capacity, PV input, and form factor:
Feature |
LFEM-250-783 |
LFEM-125-261-E1 |
Rated Power |
250kW |
125kW |
Rated Energy |
783kWh |
261kWh |
PV Input |
378kW, 6 MPPT |
150kW, 3 MPPT |
Form Factor |
10-ft prefabricated container |
Outdoor cabinet |
STS Module |
Standard |
Not applicable |
Application |
Medium microgrid, industrial park |
Small microgrid, C&I |
Choose LFEM-250-783 for larger microgrid applications requiring higher power and energy capacity.
A: The LFEM-250-783 is primarily a DC-coupled system with 6 MPPT channels for direct PV connection. It also supports AC coupling for grid-tied applications. This dual capability allows flexible integration with both new PV installations and existing AC-coupled systems.
A: The LFEM-250-783 is a prefabricated containerized system. On-site installation typically takes 2–3 days for container placement, PV connection, cabling, and electrical connection. Commissioning and testing usually require an additional 1–2 days, depending on the PV array size and site conditions.
A: Yes. The LFEM-250-783 supports parallel operation with multiple containers of the same model. You can start with one unit and add more as your power demand or PV capacity grows, achieving MW-level microgrid capacity.
A: Liquid cooling provides:
Superior thermal consistency: Cell temperature difference ≤3°C (typical)
Extended cycle life: Up to 20% longer than air-cooled systems
Lower parasitic loss: More efficient than forced air cooling
Higher reliability: Less dust ingress, suitable for harsh environments
A: The system supports Modbus RTU (via RS485) and Modbus TCP (via Ethernet). It can be integrated with SCADA, EMS, or building management systems. Our cloud platform also provides remote monitoring and data visualization.
A: The system incorporates multi-level fire protection:
Pack level: Each battery pack has its own fire suppression module
Cabin level: Water spray fire protection for the entire container
AI prediction: Continuous monitoring of voltage, temperature, and current to predict and alert potential faults
A: The LFP314 cells are rated for 6,000 cycles at 25°C, 0.5C charge/discharge rate, 90% DoD, and 70% EOL capacity retention. Under daily cycling, this translates to approximately 15–16 years of useful life.
A: Payback period depends on local electricity rates, PV generation, load profile, and available incentives. Typical payback for commercial and off-grid microgrid applications is 3–6 years. We provide a free ROI simulation based on your site data.
A: The LFEM-250-783 connects directly to 400V low-voltage grids. For medium-voltage connection (e.g., 10kV, 35kV), an external step-up transformer is required. We can provide or recommend suitable transformers based on your project requirements.
A: Yes. Our cloud-edge collaborative platform provides real-time monitoring, remote control, OTA upgrades, and predictive maintenance alerts. Our engineering team provides 24/7 remote support for all installed systems.
A: Yes. The LFEM-250-783 supports black start capability through its grid-forming inverter, allowing it to establish voltage and frequency independently during a full grid outage. This is particularly valuable for microgrid and off-grid applications.
Sanhe Power Tech (Shenzhen) Co., Ltd.
yvonne.zhang@samwha-cn.com | www.sanhenergy.com
