YB□-12 Prefabricated Substation
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.
- 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 combina
- Compact, light and visually harmonious; with SF6 ring-main switchgear the overall size shrinks further — ideal
A cleaner, more reliable approach to MV switching
The HP-ELS series replaces SF₆ with environmentally friendly insulating media while keeping the proven safety and performance utilities expect from gas-insulated switchgear.
Product Overview
The YB□-12 high/low-voltage prefabricated substation (box-type substation) is an efficient transformation-and-distribution device made up of a high-voltage chamber, a transformer chamber and a low-voltage chamber, for power systems rated 12 kV. It offers complete assembly, a small footprint, easy relocation, a rational structure, an elegant appearance, convenient installation and maintenance, and low investment.
Applications
It is widely used in residential communities, large construction sites, industrial and mining enterprises, high-rise buildings, urban street-lighting distribution, oil fields, mines, narrow streets and temporary power supply.
Technical specifications
Headline ratings at a glance, followed by the full technical data sheet. Exact values are confirmed per project configuration.
| Parameter | Value |
|---|---|
| Rated / max operating voltage | 6·10·35 kV / 6.9·11.5·40.5 kV |
| Rated current / transfer current | 400·630 A / 870 A |
| PF withstand (ph-E & ph-ph / break) | 42 / 48 kV |
| Impulse withstand (ph-E & ph-ph / break) | 75 / 85 kV |
| Breaking current (current-limiting fuse) | 31.5 kA |
| Rated voltage / capacity | 6·10·35 kV / 10–1250 kVA |
| Tap range / vector group | ±2×2.5 %·±5 % / Yyn0·Dyn11 |
| Impedance voltage | 4 / 4.5 / 6 / 8 % |
| Rated voltage | 220 / 380 / 690 / 800 V |
| Main / branch circuit current | 50–4000 A / 5–800 A |
| Protection (HV / transformer / LV room) | IP33 / IP23 / IP33 |
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