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Pre-Installed Substation

Prefabricated & Package
Substations

 
 
 

A compact substation is an integrated medium- and low-voltage distribution unit that combines medium-voltage switchgear, a transformer, and a low-voltage distribution panel within a single enclosure. It delivers safe, reliable, and space-efficient power distribution for industrial, commercial, residential, and public infrastructure projects.

As one of the leading prefabricated and package substation manufacturers, CHBEB customizes substations for regional standards, project specifications, and EPC requirements. Compliant with ANSI/IEEE, IEC 62271-202, and GOST standards, these turnkey solutions provide reliable power distribution in extreme environments from -45°C to +55°C.

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Standard Utility Configurations for Key Markets

 
 
 

Our prefabricated electrical substations are designed to meet regional standardsand operational requirements across major markets.

1
ANSI/IEEE-Compliant Pad-Mounted Transformers
  • Dead-front design for enhanced safety
  • 60Hz grid compatibility (UL-listed components available upon request)
  • Loop-feed and radial-feed configurations available
2
IEC-Compliant Package Substations (Compact Substations / CSS)
  • GRP or double-layer insulated enclosures available
  • Sand-proof design with IP55/IP65 protection
  • Optimized derating for high-ambient temperature operation
3
GOST-Compliant KTP / KTPN Kiosk Substations
  • Reinforced steel enclosures for operation down to -45°C
  • Built-in anti-condensation and heating systems
  • Designed for 6 kV / 10 kV regional grid requirements

Custom Industrial Substation Solutions

 
 
 

We deliver modular turnkey solutions engineered for specialized and demanding industrial applications.

Integrated E-House
Skid-Mounted Substation
Containerized & Mobile Substation

Integrated E-House for Mining & Offshore

Our modular electrical houses integrate power, control, and protection systems for mining, oil & gas, and offshore platforms.

  • Walk-in modular design for large-scale industrial integration.
  • Built-in HVAC and fire suppression systems for sensitive electronics.
  • Pre-wired & pre-tested as a single unit to minimize site labor.
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Integrated E-House

Skid-Mounted Substation for Oil Fields & Rugged Terrain

Skid-mounted substations are designed for demanding applications, including shale oil fields, mobile mining operations, and temporary industrial sites.

  • Heavy-duty reinforced steel base (Skid) for dragging or crane lifting.
  • Engineered for frequent relocation in shale oil & open-pit mines.
  • Ruggedized enclosure to withstand extreme mechanical vibration.
Request a Technical Proposal
Skid-Mounted Substation

Containerized & Mobile Substation for Crypto Mining & Emergency

We provide custom, containerized, and mobile substations for applications such as cryptocurrency mining, data centers, and emergency power.

  • Built within standard 20ft/40ft ISO containers for easy ocean freight.
  • Plug-and-Play rapid deployment for data centers & crypto farms.
  • Custom high-airflow thermal management for continuous high-load.
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Containerized Substation
Three-Compartment Design for Prefabricated Substations
 
 
 

Our compact substation features a three-compartment structure. Beyond simple assembly, it focuses on optimal space utilization, arc-flash safety, and thermal stability in compliance with IEC 62271-202.

High Voltage Compartment Transformer Compartment Low Voltage Compartment
Prefabricated Package Substation

High Voltage (HV) Compartment – Intelligent Control

  •  

    Core Equipment

    It is equipped with Gas Insulated Switchgear (GIS) or Air Insulated (AIS) Ring Main Units (RMU).

  •  

    Safety First

    It features specialized Internal Arc Classification (IAC) and mechanical interlocking systems to prevent misoperation.

  •  

    Reliability & Automation

    Designed for maximum reliability in compact secondary substations (CSS), supporting automated fault detection.

High Voltage Compartment

Transformer Compartment – Thermal Efficiency

  •  

    Compatibility

    This compartment is precision-engineered to house either liquid-filled (mineral or ester oil) or cast resin dry-type transformers.

  •  

    Thermal Management

    Ventilation louvers and optional forced-air cooling systems are optimized to prevent derating in high-ambient temperatures.

  •  

    Protection

    Integrated oil containment (bunding) provides environmental safety in compact substations.

Transformer Compartment

Low Voltage (LV) Compartment – Precision Distribution

  •  

    Versatility

    This compartment can be customized with main distribution boards (MDB), automatic transfer switches (ATS), and power factor correction units.

  •  

    Intelligence

    SCADA-ready integration enables smart metering and protection relays (Schneider/ABB/LS) for remote monitoring.

  •  

    Flexibility

    Modular busbar designs allow easy future expansion of outgoing feeders.

Low Voltage LV Compartment
Robust Enclosure Construction
 
 
 

The enclosure is designed to protect your substation from harsh industrial and outdoor conditions while ensuring long-term reliability and safety.

Steel Thickness & Strength

Built with a minimum of 2.0 mm hot-dip galvanized steel, the enclosure delivers exceptional structural strength and impact resistance.

Anti-Corrosion Protection

Multi-stage powder coating protects the enclosure from corrosion, with optional C5-M treatment for coastal or high-humidity environments.

Material Flexibility

Available in stainless steel or GRC (glass-fiber reinforced concrete) to enhance fire resistance, thermal insulation, and overall environmental durability.

CHBEB: Your Trusted Manufacturing Partner
for EPC Power Projects
 
 
 

We turn your designs into reality with precise engineering and manufacturing, serving as a reliable partner for complex EPC power projects.

Accurate Implementation of Your Specifications

We serve as the manufacturing arm for EPC contractors, turning your SLD and specifications into a compliant, grid-ready package substation.
• Zero-Deviation Policy: Strict adherence to protection logic, CT/ PT ratios, and cable entry requirements.
• Technical Scrubbing: Drawings reviewed to ensure rated short-circuit breaking current (Isc) and Basic Insulation Level (BIL) are met in the final build.

Approved Component Integration

We integrate breakers, protection relays, and other critical components per your Approved Vendor List (AVL), ensuring full compliance with project specifications and reliability requirements.
• Trusted Global Brands: Schneider, ABB, Siemens, Eaton – fully integrated to meet international standards.
• High-Performance Local Brands: NARI, XUJI, Delixi Electric – reliable, with optimized lead times and cost for fast, robust project execution.

Compact Substation

In-House Transformer Expertise

The transformer—the heart of every compact substation—is built in-house for maximum efficiency and reliability.
• Factory-Direct Control: Direct manufacturing ensures the "heart" of your project meets the highest efficiency standards without middleman markups.
• EPC Customization: Transformer dimensions and terminal orientations can be tailored to site constraints or enclosure footprints.

EPC-Focused Documentation & Support

For EPC contractors, thorough documentation is as critical as the hardware itself.
• Submittal Packages: Complete GA drawings, wiring diagrams, and technical datasheets ready for submission to end-users.
• Technical Deviation List (TDL): Potential tender issues are identified proactively, providing a clear TDL to manage project risks efficiently.

Factory Manufacturing & Acceptance Testing
 
 
 

Our prefabricated substation factory delivers direct transformer production in strict accordance with IEC 62271-202 standards, ensuring full
compliance and high-quality output for every substation.

In-House Transformer Coil Winding in the Workshop
01

Original Transformer Manufacturing

  • As an original transformer manufacturer, we directly control the substation's core asset, ensuring full alignment with your project's SLD.
  • Vertical Integration: All winding, core stacking, and tank welding are performed in-house, enabling precise control of no-load and load losses.
  • Quality Traceability: Each transformer receives a unique serial number for full lifecycle traceability, from factory to project site.
Technician Conducting a Power-Frequency Withstand Voltage Test with Visible Instrument Readings
02

Mandatory Routine Testing (IEC 62271-202)

  • Each unit undergoes full factory routine tests per IEC 62271-202 to ensure plug-and-play reliability on site.
  • • Dielectric Verification: Power-frequency withstand tests confirm insulation integrity and operator safety.
  • • Mechanical Reliability: 5–10 manual and electrical cycles on all HV/LV switchgear and interlocks ensure zero mechanical failures.
  • • Circuit Measurements: Transformer ratios, DC resistance, and comprehensive secondary wiring checks verify complete circuit integrity.
Close-Up of Hot-Dip Galvanized Steel Measured with a Caliper
03

Dedicated FAT & Documentation

  • Inspector-friendly factory acceptance with full submittal documentation for EPC and end-user approval.

     

  • • On-site FAT Welcome: EPC representatives or approved third-party inspectors (SGS, Intertek, BV, etc.) are welcome to conduct Factory Acceptance Testing at our facility.
  • • Complete Submittal Package: Each delivery includes Routine Test Reports and relevant Type Test Reports to support final approval and project handover.
 
Industry Applications
 
 
 

Engineered compact substations deliver proven reliability across key industries. From remote mines in Central Asia to
solar farms in the Middle East, we tailor our solutions to meet the diverse requirements of EPC projects.

1001

Renewable Energy (Solar & Wind)

Step-up substations with high harmonic resistance, customized LV interfaces to seamlessly match your inverter models.

2

Industrial & Mining

Heavy-duty units, including KTP substations, designed for high dust, extreme temperatures (down to -45°C), and frequent overloads.

3001

Public Infrastructure & Utilities

High-safety, low-noise substations compliant with IEC or ANSI/IEEE standards, ideal for urban grids, residential areas, and critical data centers.

Technical FAQ for High-Value Projects

Quick answers to EPC contractors' most critical technical questions.

Q: Can you adapt your designs to specific local Utility grid codes?

A: Yes. We perform a "Technical Scrubbing" on your SLD to ensure full compliance with local grid codes, including ANSI/IEEE, IEC, or GOST standards.

Q: How do you handle corrosion in high-salinity coastal environments?

A: We provide C5-M (Marine Grade) powder coating over 2.0 mm+ hot-dip galvanized steel, ensuring over 20 years of durability in harsh salt-spray zones.

Q: Do you provide full Type Test reports for project approval?

A: Yes. Every unit comes with a Routine Test Report, and we provide authorized Type Test Reports to assist EPCs in securing end-user and utility approvals.

Q: Can you integrate third-party components specified in our AVL?

A: Absolutely. We respect your Approved Vendor List (AVL) and can seamlessly integrate components from ABB, Schneider, Siemens, or other high-quality domestic brands.

Request Your Customized Technical Proposal

Receive a factory-audited technical solution tailored to your project. Submit your request and we will respond within 24 hours.

 

We are one of the most experienced compact substation manufacturers and suppliers in China since 1956, specialized in providing high quality products and service for global clients. We warmly welcome you to wholesale custom made compact substation from our factory.

Powering the World with Premium Transformer Solutions

As a leading Chinese transformer manufacturer with decades of expertise, CHBEB proudly serves clients across 17 countries and counting. Our global footprint expands continuously as we:

  • Deliver customized power solutions for more than 10 international projects
  • Support over 20 trusted distributors worldwide
  • Manufacture reliable low-voltage transformers with 60+ years of technical excellence

Let's energize your next power project with Chinese precision and global reliability.

Get in Touch with CHBEB

Leave a message for more information about our products series, and request a quote or expert advice.