Technical specifications
| Parameter | Value |
|---|---|
| Type | Hua-style Prefabricated Substation |
| Transformer | Oil-Immersed |
| Input Voltage | 35 kV |
| Output Voltage | 400 V |
| Phase | Three Phase |
| Frequency | 50 / 60 Hz |
| Winding Material | Copper / Aluminium |
| Vector Group | Dyn11 / Yyn0 |
| Transformer Body Protection | IP68 |
| Enclosure Protection | Not less than IP54 |
| Standard | IEC / GB |
| Certification | ISO9001 |
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
- Combined layout: enclosed switchgear/distribution room plus exposed oil booster transformer
- IP68-rated transformer body for full submersion protection and reliability
- Multiple radiator-fin panels and oil conservator for effective heat management
- Sheet-steel enclosure (≥ IP54) on a rigid base frame for outdoor service
Typical applications
Photovoltaic power stations, energy storage step-up, and new-energy collection and grid-connection projects.
Customisation options
Enclosure colour, capacity, voltage ratio, transformer type, and switchgear scheme available on request.
Ordering information
Built to order per confirmed specifications. Please provide capacity, voltage ratio and application 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 voltage ratio is available?
The standard unit is 35 kV input to 400 V output. 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 / 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 ratio, transformer type, and switchgear scheme 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.
