1 .A Low Voltage Pre-installed Substation (also known as a Compact Substation, Package Substation, or Prefabricated Substation) is a factory-assembled, ready-to-install unit that integrates several components required for distributing electrical power at low voltage (LV), usually below 1000V.
2 .✅ Basic Definition:
A Low Voltage Pre-installed Substation is:
A compact, enclosed unit that typically contains low-voltage switchgear, distribution transformers, and sometimes medium-voltage switchgear, pre-assembled for fast deployment at a site, especially for commercial, industrial, or infrastructure projects.
3.🔧 Main Components:
Depending on design and voltage levels, the substation may include:
| Component | Function |
|---|---|
| MV Switchgear | (Optional) Receives medium voltage (e.g., 11kV or 33kV) power safely. |
| Transformer | Steps down medium voltage to low voltage (e.g., 400V). |
| LV Switchgear | Controls and distributes the low-voltage output to the load. |
| Enclosure (Kiosk) | Weatherproof steel or concrete housing that protects internal equipment. |
4.📦 Key Features:
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Pre-assembled & tested in factory
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Plug-and-play installation on-site
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Compact footprint — space-saving
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Suitable for urban, industrial, or remote areas
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Reduced installation time & cost
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Safety and environmental protection compliance
5.🏗️ Typical Applications:
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Commercial buildings
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Industrial parks
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Shopping malls
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Solar & wind energy farms
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Residential developments
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Construction sites
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Temporary power setups
6.⚡ Example Specification (Typical):
| Parameter | Typical Value |
|---|---|
| Rated Voltage | 400V (LV), 11kV (MV if included) |
| Transformer Rating | 100 kVA – 2500 kVA |
| Frequency | 50/60 Hz |
| Ingress Protection | IP43 to IP65 (depends on design) |
| Cooling | Oil-immersed or dry-type |
Would you like a visual diagram or a comparison with traditional substations?
