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LFEM-125-261-E1
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Model: LFEM-125-261-E1
Installation: Outdoor
Brand: Sanhe / LFEI
The LFEM-125-261-E1 is a liquid-cooled PV and energy storage microgrid cabinet designed for commercial, industrial, and remote off-grid applications. It integrates PV MPPT controllers, PCS, battery system, and microgrid control into a single outdoor-rated cabinet.
The system supports DC-coupled PV input (3 × 50kW MPPT), grid-connected and off-grid operation, and millisecond-level on/off-grid switching. With built-in grid-forming capability, it can operate as an independent microgrid power source when the main grid is unavailable. It is ideal for mining microgrids, island power systems, remote villages, industrial parks, 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
Multi-Dimensional Security
First-tier A-grade battery cells, core-level safety guarantee
Active/passive fire protection design, safe and reliable operation
Early warning of cell-level faults and proactive elimination of potential safety hazards
Microgrid Architecture
Highly integrated, DC-coupled PV+ESS architecture
Multi-source access: wind, solar, diesel, storage, and EV charging
Grid-forming, on/off-grid operation with millisecond-level transfer
Quick Commissioning
All-in-one design, fast installation and deployment
Modular design, integration/maintenance more efficient
Multiple cabinets operating in parallel, flexible capacity expansion, MW-level scalability
Overseas Market Ready
CE certified for European market access
IEC 61000 EMC compliant for grid compatibility
UN 38.3, IEC 62619, IEC 62477 certified for safe international transport and operation
| Parameter | Specification |
|---|---|
| Product Model | LFEM-125-261-E1 |
| PV Parameters | |
| Max. PV Input Voltage (V) | 550 |
| Max. PV Power (kW) | 50 × 3 |
| MPPT Operating Voltage Range (V) | 250–500 |
| Number of MPPT Modules | 3 |
| Battery Parameters | |
| Battery Specification (Ah) | LFP314 |
| Cluster Configuration | 1P260S |
| Rated Voltage (V) | 832 |
| Voltage Range (V) | 650–936 |
| Rated Energy (kWh) | 261 |
| Charge-Discharge Rate (P) | 0.5 |
| Cooling Method | Intelligent Liquid Cooling |
| AC Parameters | |
| Rated AC Power (kW) | 125 |
| Rated AC Current (A) | 180 |
| Rated AC Voltage (V) | 400 |
| AC Connection | Three-phase four-wire |
| Rated AC Frequency (Hz) | 50/60 |
| THDi | <3% @ rated power |
| Power Factor | -1 leading to +1 lagging |
| THDu | <3% @ linear load |
| System Specifications | |
| IP Rating | IP55 |
| Cycle Life | 6,000 cycles @ 25°C, 0.5C/0.5C, 90% DoD, 70% EOL |
| Isolation Method | Output isolation |
| Operating Temperature (°C) | -25–60 (derating above 45) |
| Operating Humidity (RH) | 0%–95% |
| Altitude (m) | 2000 |
| Noise (dB) | <75 |
| Communication Interface | RS485, Ethernet |
| Fire Protection | Pack-Level + Cabinet-Level Water Suppression |
| Communication Protocol | Modbus RTU/TCP |
| Dimensions (W×D×H) (mm) | 1600 × 1350 × 2300 |
| Weight (t) | 3.33 |
| Certification | Status |
|---|---|
| CE | ✅ Certified |
| UN 38.3 (Transport Safety) | ✅ Certified |
| IEC 62619 (Battery Safety) | ✅ Certified |
| IEC 62477 (PCS Safety) | ✅ Certified |
| IEC 61000 (EMC) | ✅ Certified |
Note: The E1 version is specifically configured for overseas/European market access. Certification documents can be provided upon request.
| Application | Description |
|---|---|
| Mining Off-Grid Microgrids | Independent power supply for remote mining sites |
| Island Independent Power | Reliable power for islands without grid connection |
| Remote Village PV-Diesel-Storage Hybrid | Combined PV, diesel, and storage for remote communities |
| Industrial Park Microgrids | Grid-connected or off-grid microgrid for industrial parks |
| Emergency Power Supply | Rapid deployment for disaster relief and temporary sites |
The LFEM-125-261-E1 supports:
DC coupling for solar PV integration (3 MPPT channels, max 150kW 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
Multi-source access: PV, diesel generator, storage, and EV charging
Parallel expansion with multiple cabinets for MW-level capacity
A: These are two different product categories:
| Feature | LFEM-125-261-E1 | LFEI-125-261-E1 |
|---|---|---|
| Product Type | PV + storage microgrid cabinet | Grid-tied energy storage cabinet |
| PV Input | Yes (3 × 50kW MPPT) | No |
| DC Coupling | Yes | No |
| Grid-Forming / Off-Grid | Supported | Not supported |
| Application | Microgrid, solar + storage hybrid, off-grid | Pure storage: peak shaving, demand management, backup |
Choose LFEM-125-261-E1 for microgrid or PV + storage applications. Choose LFEI-125-261-E1 for pure grid-tied storage applications.
A: The LFEM-125-261-E1 is primarily a DC-coupled system with 3 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-125-261-E1 is an all-in-one, pre-assembled cabinet. On-site installation typically takes 1–2 days for placement, PV connection, cabling, and electrical connection. Commissioning and testing usually require an additional 1–2 days, depending on the PV array size.
A: Yes. The LFEM-125-261-E1 supports parallel operation with multiple cabinets 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
Cabinet level: Water spray fire protection for the entire enclosure
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 solar + storage is 3–6 years. We provide a free ROI simulation based on your site data.
A: The LFEM-125-261-E1 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-125-261-E1 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
