125kW 137.5kVA 261kWh Commercial & Industrial Liquid Cooling ESS Cabinet

Introducing the FENGRUI FRL1-125-261K, a high-performance, high-power-density C&I energy storage solution. Utilizes advanced liquid cooling and an 832V high-voltage battery platform to achieve up to 98.5% system efficiency. With 125kW rated output, support for 10 units in parallel, IP55 protection, and dual fire suppression, it's built for demanding commercial applications requiring maximum efficiency, reliability, and space savings.

Overview
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Key Features:

● Industry-Leading Efficiency

Maximum efficiency ≥98.5% leads the industry. Higher efficiency means lower operational losses, directly boosting lifecycle ROI.

● High Overload

Supports 125% overload for 10s and 150% for 0.1s, with 100% unbalance load capacity in off-grid mode for demanding loads.

● Transformerless Design

Advanced non-isolated topology eliminates heavy transformers, improving efficiency while reducing weight, cost, and losses.

● Industrial-Grade Protection

IP55 rating, C3 anti-corrosion, and integrated gas + water fire suppression meet safety and reliability demands for harsh environments.

● Supports Large-Scale Deployment

Supports up to 10 units in parallel for easy scaling to MW-level systems, accommodating phased project development.

Specification of FRL1-125-261K

AC Side (Grid-Tied)
Rated Output Power	125kW
Max. Output Apparent Power	137.5kVA
Rated AC Voltage	400V/ 230V
Max. Output Current	200A
Rated AC Frequency	50/60Hz
Adjustable Power Factor Range	-1 ~ 1
Total Harmonic Distortion (THDi)	< 2%
Max. Efficiency	≥98.5%
AC Side (Off-Grid)
Rated AC Output Voltage	400V/ 230V
Rated AC Frequency	50 Hz / 60 Hz
THDv	< 3% (linear load )
Unbalance Load Capacity (Off-Grid)	100%
Overloading Capability	1.25/10s，1.5/0.1s
Battery Parameters
Battery Type	LFP 314Ah
Rated Energy	52.24kWh
Rated Battery Voltage	832V
PCS Voltage Range	615V~950V（3W+PE）/650V~950V（3W+N+PE）
Max. Current	203A
System Parameters
Dimensions (W x H x D）	L1,080×D1,586×H2,350(mm)
Net Weight	2,800kg
Operating Temperature Range	-30℃~55℃
Relative Humidity	0~95% RH (non-condensing)
Max. Operating Altitude	4,000m (Derating above 2,000m)
Cooling Concept	Liquid Cooling
Safety Protection	Bidirectional Active Balancing, Thermal Management, Real-Time Voltage and Temperature Monitoring.
Ingress Protection	IP55
Topology	Non-isolated
Certifications	IEC62619, IEC63056, IEC61000, IEC62477-1, IEC62040,UN38.3
Communication Interfaces	ModbusRTU
Communication Protocol	RS485/CAN
Anti-corrosion Degree	C3
Configuration of Safety	Gas fire suppression + Water fire suppression
Max. Parallel Quantity (Off-Grid)	10 Units