Global Procurement Guide for Compact Substation
Compact Substation Overview
-Compact Substation,mini Substation,prefabricated substation can replace the traditional indoor substation, can meet the user's electricity metering, reactive power compensation, high and low voltage schemes and other configuration requirements, representing the development direction of small and medium-sized substations
- Rated AC frequency 50Hz/ 60Hz, maximum working voltage to 35kV, maximum working current to 5000A
- This product is suitable for industrial and mining enterprises, docks, public places, high-rise buildings and residential areas
- Products are mainly sold to Asia, Africa and other regions, provide OEM/ODM services
- Implementation standard: IEC60067 GB 17467-2010, etc
Compact Substation Advantage
> Leading technology
- Fully enclosed, fully insulated structure, safe and reliable operation
- Easy to operate, maintenance-free, low equipment cost
> The shell
- The box shell has the characteristics of firm, heat insulation and ventilation, stable performance (anti-corrosion, dustproof and waterproof) and beautiful appearance
- There are many choices of shell materials, such as steel plate, composite plate, stainless steel plate, cement plate and other protection grade (IP67)
> Functional units
- It is divided into three independent areas: high voltage room, low voltage room and transformer room
- High pressure chamber XGN15, HXGN17 or (SF6) switch cabinet
- The low-voltage side adopts the panel type or cabinet mounted structure to form the power supply scheme required by users, which can meet the functions of power distribution, lighting distribution, reactive power compensation, energy metering and so on. The main switch is generally universal circuit breaker or intelligent circuit breaker, which is flexible to install and easy to operate
- The transformers can be fully sealed oil-immersed transformers or dry transformers
> Busbar system
- Adopt three-phase four-wire system or three-phase five-wire system
- High quality three-phase tin bus copper bar, high mechanical strength, good heat dissipation
Compact Substation Case show
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Compact Substation FAQ
1. What is a Compact Substation?
Compact Substation is an integrated electrical unit that combines high-voltage (HV) switchgear, transformers, and low-voltage (LV) distribution equipment in a single, prefabricated enclosure. It is designed for efficient power distribution in urban, industrial, or commercial applications where space is limited.
2. What are the main components of a Compact Substation?
typical compact substation includes:
- HV Switchgear (RMU, circuit breakers, or load break switches)
- Distribution Transformer (oil or dry-type)
- LV Switchboard (distribution panels, circuit breakers, metering)
- Enclosure (weatherproof, corrosion-resistant, and vandal-proof)
3. What are the advantages of a Compact Substation?
Space-saving – Ideal for confined urban or industrial areas.
Quick installation – Pre-assembled and tested for faster deployment.
Cost-effective – Reduced civil works and labor costs.
Reliable & Safe – Complies with IEC/ISO standards for protection.
Modular & Scalable – Can be customized for different power needs.
4. Where are Compact Substations commonly used?
- Residential complexes
- Industrial parks
- Commercial buildings
- Renewable energy projects (solar/wind farms)
- Temporary power supply (construction sites, events)
5. What is the typical voltage range of Compact Substation?
- HV Side: 11kV, 22kV, or 33kV (varies by region)
- LV Side: 400V/230V (standard for low-voltage distribution)
6. How is maintenance performed of Compact Substation?
Compact substations are designed for low maintenance, but periodic checks should include:
- Transformer oil testing (for oil-filled units)
- Thermal imaging (to detect overheating)
- HV/LV equipment inspection(contacts, insulation, relays)
- Enclosure integrity check (sealing, ventilation, corrosion)
7. Are Compact Substations customizable?
Yes! They can be tailored for:
- Different transformer capacities (e.g., 100kVA to 2500kVA)
- Indoor/outdoor use (IP ratings from IP33 to IP65)
- Special environments (explosion-proof, extreme climates)
8. What standards do Compact Substation comply with?
Common international standards include:
- IEC 62271 (HV switchgear)
- IEC 60076 (transformers)
- IEC 61439 (LV switchgear)
- Local grid codes (e.g., ANSI, IEEE, SABS，SASO，or EN standards)
