Solar EPC Equipment Package

Solar Grid-Connection Substation Package

A complete high-voltage interface package covering main transformer, HV/MV switchgear, protection, control, metering and auxiliary systems.

Rated voltage: 35 kV to 66/110/132/220 kV
Capacity range: Project-specific
Standards basis: Applicable IEC/IEEE equipment standards and local grid code
Typical application: large solar parks…

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Technical product selection

Typical Use

Where this product is used

large solar parks requiring transmission-level interconnection

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 standardApplicable IEC/IEEE equipment standards and local grid code

ConfigurationUtility-scale photovoltaic projects

Applicable standards

Applicable IEC/IEEE equipment standards and local grid code

Rated voltage

35 kV to 66/110/132/220 kV

Rated capacity

Project-specific

System frequency

50 Hz or 60 Hz, as specified

Package scope

AIS or GIS interface; main transformer; SCADA; protection and metering panels

Grid interface

Defined by interconnection study and utility requirements

Design coordination

Single-line diagram, protection, metering, SCADA and auxiliary power

Application

large solar parks requiring transmission-level interconnection

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.

Plant electrical model

Provide installed MW, inverter blocks, collector voltage, point of interconnection and utility short-circuit data.

Step-up architecture

Coordinate inverter transformers, MV switchgear, collector feeders and the main grid-connection transformer.

Grid-code duty

Define reactive power, voltage ride-through, harmonics, protection, metering and plant-controller interfaces.

Delivery boundaries

Separate Apex equipment design coordination, procurement and delivery from civil works and site construction by the appointed local partner.

Normal supply

Typical standard equipment

Coordinated equipment data sheets
Interface register and document schedule
Protection and metering requirements
Factory test documentation
Export packing and delivery records

Project options

Common optional equipment

MV step-up skid or station package
Main transformer and grid switchgear
Protection, control and SCADA panels
Auxiliary transformer and AC/DC systems
Revenue metering interfaces
Spare parts and commissioning support coordination

Testing and Documents

Tests and documents supplied with the product

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

Package verification

Each equipment item is tested to its applicable standard, followed by agreed interface and functional checks before shipment.

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 complete high-voltage interface package covering main transformer, HV/MV switchgear, protection, control, metering and auxiliary systems.

Product overview

Solar Grid-Connection Substation Package is configured for large solar parks requiring transmission-level interconnection. Apex coordinates technical review, qualified production, documentation and export delivery according to the approved project requirements.

Applications

large solar parks requiring transmission-level interconnection. 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.

Solar plant capacity (MW)
Inverter model and output voltage
MV collector voltage
Grid connection voltage and grid code
Single-line diagram or block layout
Protection, metering and SCADA requirements
Required equipment and supply boundary
Delivery schedule
Quantity
Destination country and delivery location

FAQ

Questions buyers usually ask

Does Apex perform site construction?

Apex supports equipment package definition, engineering coordination, procurement and delivery. Site civil works, erection and construction are completed by the appointed project or local installation partner.

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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Solar Grid-Connection Substation Package

Where this product is used

Typical technical parameters

Details to confirm before production

Plant electrical model

Step-up architecture

Grid-code duty

Delivery boundaries

Typical standard equipment

Common optional equipment

Tests and documents supplied with the product

Package 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

Plant electrical model

Step-up architecture

Grid-code duty

Delivery boundaries

Typical standard equipment

Common optional equipment

Tests and documents supplied with the product

Package verification

Design and type evidence

Special testing

Document package

Product overview

Applications

What to include with your inquiry

Questions buyers usually ask

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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?