COMPACT SUBSTATION

Compact Substation
European / American / Underground / E-House

HV room, transformer room and LV room are factory built and shipped complete — lift, connect and energise. 50–2500kVA.

01 / SPECIFICATIONS

Specifications

Standard range shown below; the technical agreement and factory test report take precedence.

Item	Range / Notes
Configuration	European (three-compartment), American, underground, prefabricated e-house
Rated voltage	HV 10kV / 20kV / 35kV; LV 0.4kV
Capacity	50 – 2500 kVA per transformer
HV equipment	Ring-main unit / KYN28A / XGN15 / load-break switch + fuse
LV equipment	GCS / GGD panels, capacitor compensation, metering and outgoing circuits to drawing
Transformer	Oil-immersed or dry-type (S11 / S13 / S20 / SCB)
Enclosure	Powder-coated steel, stainless steel, GRP or concrete panel — chosen for the environment
Protection	IP33 / IP43 standard; higher on request
Standards	GB/T 17467; IEC 62271-202 for export
Installation	Concrete or precast foundation; lift into place, then primary and secondary connections

02 / TYPES

Which configuration

European type

Three independent compartments, easy maintenance — the default for urban networks, industrial parks and residential estates.

American type

Small footprint, lower cost — for scattered loads and temporary supply.

Underground type

Only the operating panel stays above ground; for scenic areas and municipal roads.

Prefabricated e-house

Complete factory build with fire fighting, lighting and HVAC — for the tightest schedules.

PV / EV-charging substation

Matched to inverters and charging stacks, with space reserved for metering and communication.

Pad-mounted type

No foundation required — fastest route to energisation.

To quote a substation we need five things: capacity, voltage ratio, HV scheme (ring-main unit or load-break switch), number of LV outgoing circuits, and installation site (indoor / outdoor / coastal). With those we quote the same day.

03 / LEAD TIME

Lead time

Type	Lead time	Conditions
Standard configuration	15–30 days	Drawing confirmed, components in stock
With imported components	25–40 days	Lead time of imported breakers and relays
Custom structure / enclosure	25–35 days	Stainless steel, GRP, underground type

04 / FAQ

Frequently asked questions

European or American type?

Choose European when you need an independent HV compartment, easy maintenance and ring-main units. Choose American where footprint and cost dominate, or for scattered and temporary loads.

Oil-immersed or dry-type inside?

Oil-immersed for a standalone substation away from people — lower cost. Dry-type near housing, in basements or where fire requirements are strict.

Will an underground unit take in water?

The tank is double sealed and only the operating panel is above grade. For high water tables we specify waterproof sleeves and a sump pit, and mark them on the layout.

What is the lead time?

15–30 days standard; 25–40 days with imported components or special enclosures.

Can it be a PV substation?

Yes — step-up transformer and grid-connection panel sized to the inverter, with space for metering, communication and anti-islanding protection.

Compact SubstationEuropean / American / Underground / E-House