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Compact Substation Manufacturer & Custom OEM Supplier

 

 

Anhui Yanyue Intelligent Technology manufactures factory-assembled, enclosure-protected compact substations (11kV to 33kV, up to 2500 kVA). Designed to IEC 62271-202 standards, each unit integrates high-voltage switchgear, a power transformer, and low-voltage distribution switchboards into a weather-resistant, compartmentalized steel or GRC structure.

 

 
  • 33kV Prefabricated Substation
    33kV Prefabricated Substation

    33kV Prefabricated Substation, also known as 33kV prefabricated substation, is a high-voltage integrated substation solution designed for large-scale renewable energy and industrial projects in

  • 11kV Packaged Substation
    11kV Packaged Substation

    11kV Packaged Substation, also known as 11kV packaged substation, is an integrated power distribution solution specially developed for mainstream 11kV power grid standards in Southeast Asia, Africa,

  • Integrated Mini Substation
    Integrated Mini Substation

    Integrated Mini Substation, also known as integrated mini substation, is a lightweight integrated power distribution solution designed for overseas small-scale commercial, industrial, and distributed

  • Container Type Substation
    Container Type Substation

    Container Type Substation, also known as container type substation, is a large-capacity integrated substation system designed for overseas large-scale photovoltaic, industrial, and municipal power

  • Packaged Unit Substation
    Packaged Unit Substation

    Packaged Unit Substation, also known as packaged unit substation, is a modular integrated substation system designed for various overseas medium and small-scale power engineering projects.

  • Compact Transformer Unit
    Compact Transformer Unit

    Compact Transformer Unit, also known as compact transformer unit, is an integrated small-scale transformer substation designed for various overseas medium and small power distribution projects.

  • Compact Power Substation Unit
    Compact Power Substation Unit

    Compact Power Substation Unit, also known as compact power substation unit, is a lightweight integrated power distribution solution specially designed for overseas small-scale engineering projects

  • 500 KVA Prefabricated Substation
    500 KVA Prefabricated Substation

    Specifically optimized for medium-scale commercial use and neighborhood power upgrades, our 500 kVA prefabricated substation represents the perfect balance of compact size and robust capacity. In our

  • 33 KV Prefabricated Substation
    33 KV Prefabricated Substation

    Built to handle demanding high-voltage requirements, our 33 kV prefabricated substation represents the pinnacle of compact, high-voltage engineering. Our 2,000-square-meter facility utilizes

  • 11 KV Prefabricated Substation
    11 KV Prefabricated Substation

    The 11 kV prefabricated substation is the global standard for reliable medium-voltage urban and suburban power distribution. In our 2,000-square-meter facility, we specialize in fabricating this 11

  • 1000 KVA Prefabricated Substation
    1000 KVA Prefabricated Substation

    For high-capacity industrial projects and utility distribution networks, our 1000 kVA prefabricated substation offers a powerful, pre-engineered solution that radically reduces on-site installation

  • Outdoor Substation
    Outdoor Substation

    Our outdoor substation is engineered to withstand the harshest outdoor climates while delivering uninterrupted, utility-grade power. As a specialized manufacturer with 9 years of industry experience,

First 123 Last
 
Construction & Environmental Adaptability
 

Applicable Standards

Fully compliant with IEC 62271-202 for high-voltage/low-voltage prefabricated substations and IEC 60076 for distribution transformers.

Ingress Protection

IP54 for HV/LV electrical compartments; IP33/IP43 for transformer cooling louver sections.

 

Corrosion Resistance

Enclosure structural frames are fabricated from 2.0mm–3.0mm hot-dip galvanized steel sheet or stainless steel, finished with electrostatically applied polyester powder coating (thickness ≥ 100 µm) to meet ISO 12944 C4/C5 atmospheric corrosion categories.

Thermal Management

Double-layer insulated roof structures reduce solar radiation heat transfer, complemented by thermostatically controlled forced-air ventilation systems.

 

 

Product Selection

 

Technical Parameter

Standard Specification Range

Rated High Voltage (HV)

11 kV / 22 kV / 33 kV (up to 38.5 kV)

Rated Low Voltage (LV)

400 V / 415 V / 690 V

Rated Capacity Range

100 kVA to 2,500 kVA

Rated Frequency

50 Hz / 60 Hz

Transformer Impedance (Uk)

4.0% – 6.0% (standard per IEC 60076)

Transformer Vector Group

Dyn11 / Yyn0 (or per utility specification)

HV Switchgear Type

SF6 Gas Insulated Switchgear (GIS) / Air Insulated (AIS) / Solid Insulated RMU

Transformer Type

Hermetically Sealed Oil Immersed (ONAN) / Cast Resin Dry Type (AN/AF)

Short-Circuit Withstand Current

20 kA / 25 kA / 31.5 kA for 1 second

Enclosure Material

Hot-Dip Galvanized Steel / Stainless Steel 304/316 / Glass Fiber Reinforced Cement (GRC)

Degree of Protection

IP43 (Transformer Compartment) / IP54 (HV & LV Switchgear Compartments)

Internal Arc Classification (IAC)

IAC-AFLR 20 kA 1s

 

OEM / Custom Configuration

 

We engineer compact substations tailored to project-specific electrical single-line diagrams, physical site constraints, and ambient environmental conditions.
[ Single Line Diagram (SLD) Submission ]
↓
[ Electrical & Structural Engineering Review ]
↓
[ Compartment Layout & Busbar Routing Optimization ]
↓
[ Mechanical Fabrication & System Interlock Wiring ]
↓
[ Factory Acceptance Testing (FAT) ]

 

Customization Options
HV Primary Equipment: Load break switches (LBS), vacuum circuit breakers (VCB), SF6-free or SF6 insulated ring main units, and zinc-oxide surge arresters.

 

Transformer Configuration: Copper or aluminum windings, off-circuit tap changers (OCTC), on-load tap changers (OLTC), PT100 temperature sensors, and winding temperature controllers.

 

LV Metering & Distribution: Multi-function digital energy meters, RS485/Modbus or Ethernet RTU telemetry modules, automatic transfer switches (ATS), and detuned capacitor banks for harmonic mitigation.

 

Site Adaptations: Anti-condensation space heaters, tropicalized winding insulation, sand-trap louvers, and heavy-duty structural channel skid bases for mobile or temporary mining setups.

Integrated Mini Substation

 

Applications
 
 
 

Renewable Energy Integration

Utility-scale solar PV facilities and onshore wind farms requiring step-up transformation before grid interconnection.

 
 

Industrial Manufacturing

Chemical processing units, steel mills, and heavy industrial plants requiring decentralized MV-to-LV power transformation.

 
 

Infrastructure & Commercial Real Estate

Data centers, healthcare facilities, commercial complexes, and urban substations where land area is constrained.

 
 

Public Utilities & Microgrids

Urban/suburban power distribution network reinforcement and remote site electrification projects.

 

 

Procurement, Testing & Delivery

 

Manufacturing & Quality Assurance
Sheet Metal Processing: High-precision CNC laser cutting, CNC press brake bending, and robotic welding ensure dimensional repeatability and structural integrity.

 

Surface Pretreatment & Coating: Multi-stage degreasing, zinc phosphating, and powder baking qualified under 1,000-hour neutral salt spray testing (ASTM B117).

 

Interlocking Mechanisms: Integrated mechanical and electrical safety interlocks prevent access to live transformer compartments before HV earthing is engaged.

Metal Clad Switchgear

 

Factory Acceptance Testing (FAT)

Every compact substation undergoes full routine factory testing in accordance with IEC standards prior to dispatch:

Power frequency withstand voltage tests on HV and LV switchboards.

01

Transformer voltage ratio, vector group verification, and winding resistance measurement.

02

Insulation resistance testing and main loop resistance checks.

03

Functional tests of mechanical door interlocks, circuit breaker tripping, and safety key systems.

04

Continuity verification for secondary wiring and protection relay setting checks.

05

 

Packaging & Export Logistics

 

 

Substations are anchored onto heavy-duty channel steel skid bases with reinforced lifting lugs. Cable entry plates and louver openings are sealed with protective moisture-barrier film. Complete units are secured in open-top or 40ft high-cube shipping containers using custom steel wire bracing for international ocean transport.

 

 

Our Certificate

 

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p2026042416351264871

 

 

FAQ

 

 

Q: What thermal control measures prevent transformer derating in high ambient temperatures?

A: Substations incorporate thermostatically controlled forced-air exhaust fans paired with double-walled insulated roof panels and natural ventilation louvers. Forced cooling activates automatically at preset temperature thresholds to maintain transformer output within rated kVA limits under elevated ambient conditions.

Q: Can you fabricate compact substations according to customer-supplied Single Line Diagrams (SLD)?

A: Yes. Our engineering department reviews your SLD, dimensional footprint restrictions, and local utility regulations to generate 3D general arrangement drawings and schematic diagrams for customer sign-off prior to production.

Q: How is internal arc safety handled within the enclosure?

A: Compartments feature top-mounted pressure relief flaps. In the event of an internal arc fault, arc pressure and hot gases are directed upward away from operating personnel pathways, maintaining compliance with IAC safety requirements.

Q: What surface treatments are used to prevent corrosion in marine or industrial coastal zones?

A: Standard enclosures utilize 2.0mm–3.0mm hot-dip galvanized steel sheet with a 100–120 µm electrostatically applied polyester powder finish. For severe offshore or coastal environments (C5 corrosion category), we supply Grade 316L stainless steel enclosures.

Q: Are the high-voltage, transformer, and low-voltage sections physically segmented?

A: Yes. Grounded steel barrier plates divide the housing into three completely isolated compartments: HV Switchgear, Transformer, and LV Distribution. Each compartment includes separate lockable doors with key-interlock systems.

Q: What test documentation is supplied with the shipment?

A: Shipments include a comprehensive Factory Acceptance Test (FAT) report, approved schematic and dimensional drawings, operating & maintenance manuals, and factory material test certificates for key component assemblies.

 

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Request a Quote

Submit your project specifications or Single-Line Diagram (SLD) to receive a customized technical proposal and Bill of Materials (BOM) quote within 24 hours.

Email: 15955042303@163.com

Direct Line / WhatsApp: +86 18255095123

Factory Address: Room 307, 3rd Floor, Building B, Entrepreneurship Center, East of Jingsan Road and North of Tianchu Road, Anhui Economic Development Zone, Tianchang City, Anhui Province, China

As one of the leading compact substation manufacturers and suppliers in China, we specialized in providing high quality customized products to global clients. Please feel free to buy bulk advanced compact substation for sale here from our factory. Contact us for pricelist.

11 KV Compact Substation, Compact Substation Unit, 33 KV Compact Substation

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