Technical specifications
| Parameter | Value |
|---|---|
| Type | Oil-type Compact Box Substation |
| Rated Capacity | 4000 kVA / 5000 kVA |
| Rated Voltage | 25 kV / 35 kV |
| Rated Current | 630 A |
| Protection Class | IP65 |
| Enclosure Material | Aluminium-Zinc Coated Plate |
| Phase | Three Phase |
| Frequency | 50 / 60 Hz |
| Winding Material | Copper / Aluminium |
| Vector Group | Dyn11 / Yyn0 |
| Standard | IEC 60076 / IEC / GB |
| Certification | ISO9001 / ISO14001 / CE / CQC |
| Warranty | 2 Years |
Specifications are based on the standard configuration. Final ratings, dimensions, materials and packaging are confirmed on the approved drawing and order confirmation.
Features and construction
- High-capacity oil-type transformer for heavy industrial and utility loads
- Compartmentalised HV, transformer and LV rooms for safe operation
- Mesh observation window and stainless-steel handles on hinged access doors
- IP65 aluminium-zinc coated enclosure with pitched roof on a rigid base frame
Typical applications
Electric power transmission and distribution, large industrial plants, mining and infrastructure projects, and utility medium-voltage networks.
Customisation options
Enclosure colour, capacity, voltage class, winding material (copper / aluminium), and compartment configuration available on request.
Ordering information
Built to order per confirmed specifications. Please provide capacity, voltage class and site requirements when enquiring.
Product images are illustrative renders for marketing reference; final delivered product is built to order per confirmed specifications.
Standards and quality
Manufactured under an ISO 9001, ISO 14001 and ISO 45001 certified management system. Designs follow the IEC 60076 / IEC 62271 series as applicable, with ANSI/IEEE, GB and GOST variants available. Every unit passes routine testing before dispatch; type tests and customer or third-party witnessed factory acceptance tests can be arranged.
Frequently asked questions
What is the rated capacity of the 4000 / 5000 kVA 25–35 kV Oil-type Compact Box Substation?
The standard configuration is rated 4000 kVA / 5000 kVA at 50 / 60 Hz. Other ratings in the same family can be built to order — tell us the load and we will confirm the nearest standard rating.
What voltage ratio is available?
The standard unit is 25 kV / 35 kV input. Voltage ratio, tapping range and vector group can be adjusted to your network; 50 Hz and 60 Hz designs are available.
Which standards and certifications apply?
The product is designed to IEC 60076 / IEC / GB. MARS operates an ISO 9001 / 14001 / 45001 certified factory and holds CE (ECM), UDEM, EAC and CQC approvals; every unit is routine-tested before dispatch and type or witnessed tests can be arranged.
Can this product be customised?
Enclosure colour, capacity, voltage class, winding material (copper / aluminium), and compartment configuration available on request.
What is the lead time and how is it shipped?
Typical lead time is 25–45 days after drawing approval for distribution equipment and 60–90 days for power transformers and containerised systems. Shipment is by sea from Shanghai on EXW, FOB, CIF or DAP terms with a full document pack.
Enquire about this product
Tell us the rating, voltage ratio, frequency, quantity and destination. A MARS engineer replies with a technical proposal and quotation within one working day.
