The Chinese New Energy Special Box Change is an advanced prefabricated substation specifically engineered for renewable energy applications such as solar farms and wind power plants. It combines high-voltage switching gear, a transformer body, protective fuse systems, low-voltage switching cabinets, and auxiliary equipment into one fully integrated system. Designed for long-term outdoor service, it offers strong weather resistance, minimal energy loss, and high operational safety. The unit’s intelligent configuration enables quick installation and minimal maintenance, making it an ideal choice for modern renewable energy projects.

Simplified Technical Specifications

Parameter	Value
System Voltage	35 kV, 36.75 kV, 38.5 kV
HV Max. Working Voltage	40.5 kV
LV Max. Working Voltage	0.21 kV, 0.3 kV, 0.315 kV, 0.4 kV, 0.5 kV, 0.69 kV
Rated Frequency	50 Hz
HV Power Frequency Withstand Voltage	95 kV
Transformer Power Frequency Withstand Voltage	85 kV
Impact Peak Withstand Voltage	200 kV
LV Side Power Frequency Withstand Voltage	5 kV
Phases	Three-phase
Protection Level – Tank	IP68
Protection Level – High/Low Pressure Room	IP54
Protection Level – Open Door	IP3X

About Manufacturer

WELTRUS (Hangzhou Weltrus New Energy Technology Co., Ltd.), part of the Welfull Group, specializes in manufacturing intelligent and efficient prefabricated substations for both conventional and renewable power applications. Leveraging advanced design and manufacturing techniques, WELTRUS ensures high performance, safety, and durability in all operational environments.