Key Features
● Fully insulated, fully sealed, low-maintenance, and reliably ensuring personal safety;
● Compact design, with a volume of just 1/3 to 1/5 that of a conventional transformer of the same capacity, and a low profile;
● Can be constructed with a compartmentalised design to prevent contamination of the oil within the transformer tank;
● The high-voltage side employs dual-fuse full-range protection, significantly reducing costs;
● Suitable for both ring networks and terminal applications; cable terminations can be hot-swapped under a load current of 200A;
● The enclosure utilises a honeycomb double-layer composite panel, providing both thermal insulation and heat dissipation;
● An electronic phase loss protector is fitted on the low-voltage side; should abnormal voltages occur within the system, it can rapidly
trip the main incoming switch;
● The high-voltage side features an oil-immersed load switch or SF₆ load switch, which can be upgraded to motorised operation, laying
the foundation for distribution network automation;
● Utilises oil-immersed S9 or the higher-performance S11 series transformers.
Key Technical Specifications
● Technical specifications for prefabricated substations
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