Electrical System & Accessories

SUBSYSTEM

Provides reliable power distribution, protection, and monitoring for all subsystems inside the 5 MWh BESS container — including
battery racks, cooling units, lighting, monitoring, and fire-safety circuits

Provides reliable power distribution, protection, and monitoring for all subsystems inside the 5 MWh BESS container — including battery racks, cooling units, lighting, monitoring, and fire-safety circuits

Component	Quantity	Specification / Standard
Electrical Cabin	Central DC power management and busbar protection	Rated Voltage 1500 V DC · Rated Current 1884 A · Air-Cooled
Power Distribution Cabinet (PDC)	Supplies auxiliary power to cooling, lighting, monitoring, fire systems	AC 380 V 3 Φ 50 Hz input / multi-output AC & DC lines
UPS	Emergency backup for BMS and safety controllers	3 kVA · 220 VAC long-delay (UL 1778 / IEC 62040-1)
DC Switch & Contactors	Rack-level and system isolation	1500 V / 500 A · UL 489 / IEC 60947-2
Fuses	Over-current protection	1500 V / 630 A · IEC 60269 / UL 248
SPD (Surge Protector)	Lightning & transient suppression	1500 V / 40 kA · EN 50539-11 / UL 1449
Isolator	Manual disconnect for maintenance	1500 V / 2500 A · UL 489B / EN 60947-3
Cables & Terminals	High-voltage and control interconnects	EV-YJYJR / UL 3817 · 350 A rating
Grounding System	Safety bonding and lightning protection	Dual points · ≤ 1 Ω resistance · ≥ 250 mm² cross-section
LED Lighting	Illumination inside container	5 × 20 W Explosion-proof LEDs (IP65)