CTECHI ESS50KW/112KWh Split-Type Commercial & Industrial Battery Energy Storage System (BESS)

KEY SPECS

Optimized Split-Cabinet Configuration for Mid-Scale Facilities

The ESS50KW/112KWh builds on the proven split-type architecture, separating the battery cabinet housing 7 × 16S1P 314Ah LFP packs from the 50kW hybrid inverter cabinet. This modular approach enables independent positioning of each cabinet up to 5 meters apart, accommodating irregular floor plans and structural columns common in retrofitted commercial and industrial buildings. The battery cabinet features a front-access maintenance design that eliminates the need for rear clearance — a critical advantage for wall-mounted installations in mechanical rooms, parking structures, and converted warehouse spaces where every square meter of floor space carries cost.

Scalable 358.4V High-Voltage DC Platform for Improved Efficiency

Operating at 358.4V nominal, the 7-pack series configuration strikes an optimized balance between high conversion efficiency and simplified regulatory compliance. The elevated voltage reduces conduction losses (I²R) on DC cabling compared to lower-voltage alternatives, while remaining comfortably within Low Voltage Directive (LVD) thresholds. The system supports a wide voltage range of 302.4V to 408.8V — providing generous MPPT compatibility for solar integration — and delivers a nominal 112.5kWh capacity with 101.3kWh of usable energy at 90% DoD. Maximum continuous power output is 50kW at a conservative 0.45C rate, ensuring the battery operates well within its comfort zone for extended cycle life.

Advanced Thermal Management for High-Duty-Cycle Operation

The intelligent air-cooling system employs variable-speed fans with N+1 redundancy, activated by a network of 42 multi-point temperature sensors distributed across cell surfaces, pack enclosures, and cabinet compartments. This precision thermal strategy maintains cell temperature deviation within 5°C across all 7 packs, critical for preventing the "weakest cell" bottleneck that limits usable capacity in poorly cooled systems. Additional protection includes ambient temperature compensation for dynamic charge/discharge current derating, anti-condensation heater control for reliable cold-start below 0°C, and IP5X-rated dust filtration media to ensure long-term stability in industrial environments with airborne particulates.

50kW Hybrid Inverter with Grid-Support Functions

The 50KW Hybrid Inverter-J bridges medium-power loads with high efficiency, achieving 98.3% peak conversion efficiency. Supporting both grid-connected and off-grid modes with under 20ms transfer time, the inverter provides grid-support functions including Volt/VAR, Volt/Watt, and frequency-Watt control per IEEE 1547-2018 standards. The wide DC input range of 280V to 430V accommodates the full battery voltage swing, while the AC side delivers 230/400V three-phase four-wire output at 50/60Hz. Modbus TCP/RTU communication protocols enable seamless integration with facility BMS, EMS, and SCADA systems for centralized energy management.

Purpose-Built for Medium-Scale Commercial and Industrial Applications

The 50kW/112kWh configuration is specifically optimized for medium-sized commercial environments ranging from 1,000 to 5,000 m². Primary applications include medium-sized retail and office buildings requiring demand charge management; cold storage and refrigerated warehouse facilities with high baseline loads; agricultural operations powering irrigation pumps and greenhouse climate control systems; small manufacturing lines with 30–50kW average load profiles; multi-tenant commercial parks deploying shared energy storage for collective demand reduction; and diesel generator hybridization projects targeting 60–80% reduction in generator runtime and fuel consumption.

Comprehensive Multi-Layer Safety and Monitoring

Safety systems extend from cell-level protection — including ceramic-coated separators, current interrupt devices, and pressure vents — through pack-level DC contactors, fuses, and dedicated BMU modules, to system-wide earth fault detection and insulation monitoring. The IP54-rated enclosures protect against environmental ingress, while door interlocks and emergency stops provide operational safety during maintenance. Built-in smoke detection and optional per-rack aerosol fire suppression modules using FK-5-1-12 clean agent offer an additional layer of fire protection for high-value facility installations where downtime is unacceptable.