Compact 12 kV HV/LV box substation in delta (P) or rectangular (M) layout — HV ring-main, transformer and LV rooms factory-integrated; 10–1250 kVA, RTU-ready for four-remote distribution automation.
The YB□-12 HV/LV prefabricated substation combines high-voltage, transformer and low-voltage rooms into an efficient transformation-and-distribution unit for 12 kV systems. Fully assembled, land-saving and relocatable, with rational structure and elegant looks, it suits residential communities, large construction sites, industry, high-rise buildings, street-lighting supply, oilfields, mines, narrow streets and temporary power.
GB/T 17467-2020 — High-voltage / low-voltage prefabricated substations
GB/T 537-93 — Ordering technical conditions for 6–35 kV box-type substations
Three rooms arranged in delta (P) or rectangular (M) layout; terminal, ring-main or dual-supply schemes
Single- or twin-transformer solutions; oil-immersed or dry-type transformers selectable
Ample natural ventilation and heat insulation keep all apparatus within ratings (forced cooling optional)
Complete five-prevention; easy operation and maintenance, safe and reliable
Enclosure of stainless steel, aluminium alloy, cold-rolled sheet, colour-steel composite, non-metal or combinations — ageing-, flame-, corrosion-, water- and dust-resistant for long outdoor service
Compact, light and visually harmonious; with SF6 ring-main switchgear the overall size shrinks further — ideal for residential and street-lamp renovation
RTU installable in the HV ring-main unit for reliable short-circuit and single-phase earth-fault detection with four-remote functions
Altitude ≤ 1000 m; ambient −25 °C … +40 °C (monthly mean ≤ +30 °C, yearly ≤ +20 °C)
Daily RH ≤ 95 %, monthly ≤ 90 %; seismic 0.4 m/s² horizontal / 0.15 m/s² vertical
Site free of severe impact, pollution, chemical corrosion, conductive dust and explosion risk; consult us beyond these limits
Specifications are representative and may vary by configuration and region. Final figures are confirmed on the project datasheet.
Tell us about your load profile and site conditions — our engineers will help you size the right HiStore configuration.
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