The Compact Substation (CSS) is a pre-designed, prefabricated electrical distribution solution designed to deliver safe, efficient, and space-saving power transformation. Engineered in accordance with international standards like IEC 61330, these substations are widely used in modern urban and rural power distribution systems. Rockwill’s compact substations are ideal for rapid deployment, offering maximum reliability and cost efficiency.
What Is a Compact Substation?
A Compact Substation integrates high-voltage switchgear, distribution transformers, and low-voltage switchgear into a single compact, pre-fabricated unit. These units are designed for outdoor use, mounted on skid frames, lifting hooks, trolleys, or portable trailers depending on customer needs.
Advantages
- Compact footprint suitable for limited spaces
- Fast installation and commissioning
- Fully integrated and pre-tested system
- Enhanced protection up to IP54 or more
- Suitable for remote locations or rapid deployment projects
- Custom-built solutions available on request
Key Components
- Outdoor Enclosure
- IP Rating: IP23 to IP54 (optional higher)
- Materials: Stainless steel, painted steel, composite non-metal
- Color Options: Grey, Green, Blue, Customizable
- High Voltage (HV) Switchgear
- Options: RMU (Ring Main Unit), SM6, UniSwitch, GIS (R-GIS), KYN28, KYN61
- Voltage Ratings: 3.3kV to 52kV
- Transformer
- Types: Oil-immersed, Dry-type (Cast Resin)
- Capacity: Up to 6300kVA
- Variants: Plug-in bushing, terminal box, hermetically sealed
- Low Voltage (LV) Switchgear
- MCC Panel, Fixed type LV switchgear, Fuse-gear, Communication panel
- Accessories
- UPS, Busbar, Connectors, Air Conditioner, Fans, Temperature controllers, etc.
Applications
- Urban and rural distribution networks
- Construction sites and infrastructure projects
- Temporary power systems
- Renewable energy systems
- Industrial and commercial power supply
Technical Specifications Table
| Parameter | Specification |
|---|---|
| Rated Voltage | 3.3kV – 52kV |
| Rated Capacity | 100kVA – 6300kVA (above = mobile substation) |
| Transformer Type | Oil-immersed / Dry-type (Cast Resin) |
| Enclosure Protection Class | IP23, IP43, Optional up to IP54+ |
| Enclosure Material | Steel, Stainless Steel, Composite |
| HV Switchgear Options | RMU, GIS, SM6, KYN28, etc. |
| LV Switchgear Options | MCC, Fuse-Gear, Communication Panels |
| Cooling Method | Natural Air Cooling / Forced Ventilation |
| Standards | IEC 61330, IEC 60529, VDE, GB |
| Frequency | 50/60Hz |
| Installation | Outdoor or Skid-Mounted |
Additional Capacities Supported
- 100kVA, 125kVA, 160kVA, 200kVA
- 250kVA, 315kVA, 400kVA, 500kVA
- 630kVA, 750kVA, 800kVA, 1000kVA
- 1250kVA, 1600kVA, 2000kVA
- 2500kVA, 3150kVA, 4000kVA, 5000kVA, 6300kVA
For capacities beyond 6300kVA, Rockwill offers Mobile Substations, Containerized Substations, or Vehicle-Based Substations.
Rockwill’s CSS Compact Substations provide an all-in-one solution for safe, fast, and efficient electrical distribution. With customizable configurations, robust protection, and reliable components, they meet the demands of modern power networks and infrastructure projects. Whether for utility providers, industrial plants, or renewable installations, Rockwill Compact Substations offer superior performance and convenience.
