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Products / Substations & Prefabricated Cabin
Substations & Prefabricated Cabin
Define the electrical assembly and the site boundary together. Distribution stations, PV step-up stations, charging-site supply and equipment cabins have different functions; the single-line diagram and equipment list show which transformer, switching, distribution and enclosure interfaces belong in the project.
Product routes
Choose the station category by purpose and scope
Review the function and interfaces, then view the equipment or discuss the project requirements.
Prefabricated Substation
A station assembly coordinating transformer, high-voltage and low-voltage functions.
- Typical duty
- An enclosed assembly that coordinates a transformer with high-voltage switching and low-voltage distribution. List the included sections and their site connections.
- Selection check
- Review each included station section, cable entry and site-work boundary. A pad-mounted transformer alone is not a complete station.
PV Step-up Substation
A PV step-up assembly between inverter AC output and the collection or grid side.
- Typical duty
- An assembly connecting a PV generation block’s AC output to the project’s collection or grid-side voltage.
- Selection check
- Review the inverter, transformer, switching and collection-side interfaces from the approved electrical scheme before fixing ratings.
Charging Pile Dedicated Substation
Charging-site supply and distribution equipment scope.
- Typical duty
- A charging-site supply and distribution requirement, including the incoming service, charging load and connection points.
- Selection check
- Define the equipment package, utility connection and site supply boundary; the charging application alone does not determine a standard layout.
Intelligent Prefabricated Cabin
A prefabricated equipment cabin with defined control and monitoring interfaces.
- Typical duty
- A prefabricated cabin whose equipment layout, control and monitoring interfaces are part of the project brief.
- Selection check
- Define the cabin, contained equipment and monitoring/control supply boundary before discussing a configuration.
Decision guide
Station options at a glance
Compare the station function and included equipment before choosing an enclosure arrangement.
| Station category | Primary design question | Key boundary | Useful first document |
|---|---|---|---|
| Prefabricated Substation | Which high-voltage, transformer and low-voltage functions sit in one station? | Equipment sections, cable entries and site works | Single-line diagram and station equipment schedule |
| PV Step-up Substation | How does one PV block connect from inverter output to collection side? | Inverter, station and grid-side interfaces | PV block single-line diagram and inverter output data |
| Charging Pile Dedicated Substation | How is the charging load supplied and distributed on the site? | Utility service, charging feeders and site footprint | Load/feeder schedule and utility connection brief |
| Intelligent Prefabricated Cabin | What equipment and control functions belong inside the cabin? | Cabin, contained equipment and monitoring scope | Equipment list, layout concept and I/O or communications brief |
Project sequence
Define the station boundary before the enclosure
- 01Identify the system role
Mark whether the assembly distributes a utility supply, steps up a PV block, serves charging loads or houses a defined set of power and control equipment.
- 02Draw the electrical boundary
Show incoming and outgoing voltages and circuits, transformer duty, protection and metering points, and the division between station equipment and external plant.
- 03Check the physical site
Record the footprint, foundation and cable approach, access for operation and maintenance, ambient conditions, and transport or lifting restrictions.
- 04Confirm the deliverable set
Identify the required equipment list, single-line diagram, general arrangement, control interfaces, destination standard and any site work excluded from the equipment package.
The same site can lead to different station layouts depending on which equipment and interfaces are inside the supply scope.
Engineering inputs
Bring the information that changes the route.
Prefabricated Substation
- Incoming and outgoing circuit list
- High-voltage and low-voltage side requirements
- Transformer duty
- Protection and metering boundary
- Foundation, cable entry and maintenance access
PV Step-up Substation
- Inverter AC output and generation-block size
- Collection or grid-side requirement
- Protection, metering and control interfaces
- Plant single-line diagram
- Ambient, ventilation and transport conditions
Charging Pile Dedicated Substation
- Charging load and operating pattern
- Incoming utility service
- Feeder and distribution schedule
- Site footprint and cable route
- Project equipment boundary
Intelligent Prefabricated Cabin
- Equipment to be housed
- Control, monitoring and communications interfaces
- Cable entry and earthing concept
- Footprint and access conditions
- Environmental and transport requirements
Procurement questions
Questions to resolve before specifying the equipment.
Is a pad-mounted transformer the same as a complete prefabricated substation?
No. A transformer is one equipment item. A complete station scope may also include high-voltage switching, low-voltage distribution, protection, metering, enclosure and site interfaces. List those sections explicitly on the single-line diagram and equipment schedule.
What should a PV station enquiry show at the inverter interface?
Show the inverter AC output, the number of connected circuits, the required collection-side connection, and the proposed protection and metering points. These details define where the station begins and ends electrically.
Can we choose a station footprint from a generic product picture?
No. The footprint follows the actual equipment list, cable entry, access, ventilation and transport constraints. A general arrangement drawing should be checked for the selected project configuration before civil design is fixed.
Does every charging site use the same substation layout?
No. The service connection, charging load, feeder arrangement and available site space determine the equipment brief. Define those inputs and the utility interface before comparing station layouts.
What distinguishes a prefabricated cabin from a complete substation?
A cabin describes an enclosure or equipment-room arrangement. A substation description also identifies the electrical transformation and distribution functions. Specify the equipment housed inside the cabin and who supplies its control and monitoring interfaces.
Which drawings help define the supply boundary?
Start with the single-line diagram, equipment schedule and site or general arrangement. Add cable-entry, foundation, control and communications drawings as the interface list develops; mark external works separately from equipment inside the enclosure.