Prefabricated Substation System

Compact Transformer Substation

A compact outdoor package integrating MV switchgear, transformer and LV distribution in a coordinated enclosure.

Rated voltage: Up to 40.5 kV
Capacity range: 200–5000 kVA
Standards basis: IEC 62271-202 and component standards
Typical application: urban distributio…

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Technical product selection

Typical Use

Where this product is used

urban distribution, commercial facilities and industrial loads

Technical Data

Typical technical parameters

The published values define the normal selection range. Final ratings and interfaces are confirmed against the approved single-line diagram and destination requirements.

Design standardIEC 62271-202 and component standards

ConfigurationOutdoor utility, infrastructure and industrial projects

Applicable standards

IEC 62271-202 and component standards

Rated voltage

Up to 40.5 kV

Rated capacity

200–5000 kVA

System frequency

50 Hz or 60 Hz, as specified

Package scope

European or American arrangement; RMU or metal-clad MV; multiple enclosure materials

Internal arc / accessibility

Defined by equipment class and project requirement

Auxiliary systems

Lighting, HVAC, fire detection, control and SCADA as required

Application

urban distribution, commercial facilities and industrial loads

Ambient and altitude

Confirmed from site conditions

Testing and inspection

Routine tests plus agreed type, special and third-party inspection requirements

Documentation

Drawings, data sheets, test reports, manuals and packing documents

These values are for product selection. Final guaranteed values are confirmed in the approved technical agreement.

Configuration

Details to confirm before production

Confirm these items so the quotation and product design match your project.

Single-line architecture

Define incoming supply, transformer rating, MV/LV bus arrangement, feeders, metering and protection philosophy.

Enclosure concept

Select compact, prefabricated modular or containerized construction from transport, access, expansion and site-work constraints.

Safety classification

Confirm accessibility, internal-arc requirements, fire separation, earthing, interlocks and emergency egress.

Site interfaces

Coordinate foundations, cable trenches, HVAC loads, auxiliary supply, SCADA, drainage and installation responsibility.

Normal supply

Typical standard equipment

MV switchgear, transformer and LV distribution scope as agreed
Internal earthing network
Lighting and service sockets
Mechanical interlocks and warning labels
Factory wiring and interface terminal blocks

Project options

Common optional equipment

Protection, metering and SCADA panels
HVAC and filtered ventilation
Fire detection and suppression interfaces
DC battery and charger system
Revenue metering
Arc-flash detection and remote operation

Testing and Documents

Tests and documents supplied with the product

The required tests and documents are confirmed before the order is placed.

Factory verification

Component routine tests, wiring checks, interlock verification, functional tests and agreed integrated factory acceptance tests.

Design and type evidence

Applicable type-test evidence or agreed design verification is reviewed during technical approval.

Special testing

Sound, temperature-rise, impulse, partial-discharge or other special tests are included only when specified.

Document package

Approved drawings, data sheets, test reports, manuals, packing list and agreed quality records.

A compact outdoor package integrating MV switchgear, transformer and LV distribution in a coordinated enclosure.

Product overview

Compact Transformer Substation is configured for urban distribution, commercial facilities and industrial loads. Apex coordinates technical review, qualified production, documentation and export delivery according to the approved project requirements.

Applications

urban distribution, commercial facilities and industrial loads. Final design considers the system study, load profile, fault level, installation environment, efficiency targets and local grid requirements.

Quotation Information

What to include with your inquiry

Send the information you already have. Unknown items can be confirmed during technical review.

Single-line diagram
MV and LV system voltages
Transformer rating
Required switchgear and feeder arrangement
Site layout and access limits
Protection and control requirements
Outdoor enclosure, ventilation and HVAC requirements
Quantity
Destination country and delivery location

FAQ

Questions buyers usually ask

Which substation format is appropriate?

Compact units suit repeatable distribution duties. Prefabricated modular rooms provide more equipment access and customization. Containerized E-Houses are used where transportable, integrated electrical rooms reduce site assembly.

Which standard should be stated in the RFQ?

Use the project or utility standard stated in the specification. Where it is not defined, send the destination, system voltage and application so the appropriate IEC or ANSI/IEEE basis can be proposed.

Are guaranteed values the same as the website values?

No. Website values are selection guidance. Guaranteed performance is stated in the approved technical data sheet and commercial offer.

What information helps Apex respond faster?

A single-line diagram, load data, voltage ratio, capacity, quantity, installation conditions, destination and required delivery date provide the best starting point.

Applications

Choose equipment for the site and operating conditions.

View Applications →

Technical Articles

Product selection and application guides.

View Technical Articles →

TECHNICAL ARTICLE

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Send the product details and attach a specification or single-line diagram when available.

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Compact Transformer Substation

Where this product is used

Typical technical parameters

Details to confirm before production

Single-line architecture

Enclosure concept

Safety classification

Site interfaces

Typical standard equipment

Common optional equipment

Tests and documents supplied with the product

Factory verification

Design and type evidence

Special testing

Document package

Product overview

Applications

What to include with your inquiry

Questions buyers usually ask

Choose equipment for the site and operating conditions.

Product selection and application guides.

The Minimum Data Needed for a Reliable Transformer RFQ

Transformer Tests and Documentation Buyers Should Request

Compact Substation Layout: Design Before Packaging

Ready to request a quotation?

Where this product is used

Typical technical parameters

Details to confirm before production

Single-line architecture

Enclosure concept

Safety classification

Site interfaces

Typical standard equipment

Common optional equipment

Tests and documents supplied with the product

Factory verification

Design and type evidence

Special testing

Document package

Product overview

Applications

What to include with your inquiry

Questions buyers usually ask

Compare within this product family.

Prefabricated Modular Substation

Containerized E-House Substation

Choose equipment for the site and operating conditions.

Product selection and application guides.

The Minimum Data Needed for a Reliable Transformer RFQ

Transformer Tests and Documentation Buyers Should Request

Compact Substation Layout: Design Before Packaging

Ready to request a quotation?