Four scenarios — PV, industrial parks, overseas EPC and OEM supply — with the configuration we ship and the checks that matter on site. Client names are covered by NDAs; technical packages are available on request.
For ground-mount, hill-site, floating and rooftop PV, the difference in a compact substation is not the rating — it is the IP class, cable entry direction, cooling method and metering position. We issue the single-line diagram against your layout and inverter scheme first, then fix enclosure size, door swing and foundation level.
| Scenario | Typical configuration | Parameters to fix early |
|---|---|---|
| Utility-scale ground mount | American / European type substation + RMU | 35 kV step-up, IP54, oil or dry type, anti-condensation |
| Commercial rooftop | Compact European type | 10 kV / 0.4 kV, dry type, IP33–IP54, roof load |
| BESS | BESS cabin + step-up transformer | 35 kV step-up, ventilation, fire interlock |
Related: compact substations · BESS cabinets & PV panels · dry-type transformers
The usual package is one or two 10 kV / 0.4 kV transformers, LV switchgear and an HV ring-main unit. At this level the cost driver is rarely the transformer: it is load calculation, reactive compensation sizing and cubicle arrangement. One size up on the transformer pulls cable, switchgear and civil works up with it.
Common practice is to size at 60–80 % loading and leave room for three years of expansion. Basements, intermediate floors and occupied buildings take dry type; a dedicated substation room above roughly 800 kVA usually takes oil-immersed. The numbers depend on your load curve, not on installed capacity alone.
Related: dry-type · oil-immersed · LV switchgear · HV switchgear
Export problems are usually not in manufacturing but in documents and system data: voltage and frequency, nameplate language, packing, certification files, spare parts list. The same model shipped to Africa and to Europe may differ in three places on the drawing.
A 60 Hz build needs flux density, turns and temperature rise recalculated — not a 50 Hz drawing with a new nameplate.
Routine tests to IEC 60076 or the customer standard; type tests confirmed per project.
English datasheet, routine test report, packing list, O&M manual; neutral packing available.
Moisture protection, impact protection, lifting marks; knocked-down or fully assembled quoted separately.
We ship to Europe, the Americas, South-East Asia, the Middle East and Africa. If your market requires local certification or third-party type tests, tell us the destination before quoting. Related: 60 Hz export builds · E-houses and substations
This group does not need a unit price, it needs a stable batch rhythm and a fixed interface: enclosure dimensions, busbar routing, secondary terminals, paint colour — all aligned to your process. One rework costs more than the saving on a single unit.
In practice we lock production slots under an annual framework, give framework customers priority in peak season, and release batches only after first-article approval. Related: oil-immersed · dry-type · cable boxes
Send the single-line diagram, rating and voltage. We reply with a configuration and a price.
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