China Wholesale 1750 Kva Transformer
Subian Electric manufactures larger distribution transformers including the 1750 kVA rating at its Xuzhou factory. This size serves industrial plants, commercial complexes and dense distribution areas, stepping medium voltage – commonly 11kV, 20kV or 33kV – down to the 400V/230V system.
With in-house core and coil production, vacuum processing and complete testing, Subian’s 50,000-square-metre factory delivers 1750 kVA units with guaranteed loss data and routine test reports, supported by 350+ staff and 50+ export countries since 2019.
Send your load profile and primary voltage, and Subian’s engineers will confirm the rating, losses and factory quotation.
Power & Distribution Transformers Built by Subian
Oil-immersed and dry-type transformers from distribution ratings to several MVA, including 1750 kVA units for industrial and large-load projects.
What Is a 1750 kVA Transformer?
A 1750 kVA transformer is a three-phase unit rated for 1750 kilovolt-amperes, typically installed where a medium-voltage supply feeds a large low-voltage load: industrial plants, data centres, commercial complexes and distribution substations. It delivers about 1.4 MW at a typical 0.8 power factor.
At this size the transformer is a major asset, so specification focuses on loss efficiency, impedance matching with the network, cooling and the protection scheme around it. Most 1750 kVA units are oil-immersed for outdoor installation, with dry-type options where indoor fire rules apply.
What Buyers Check Before Ordering
- 1.4 MW class at 0.8 pf – serves large industrial and commercial loads.
- 11 / 20 / 33 kV primaries – with 400V/230V or custom secondaries.
- Oil-immersed standard – dry-type for indoor duty.
- Loss-optimised designs – options to meet efficiency targets.
- Full test documentation – type and routine test evidence supplied.
- Project engineering – impedance and protection coordination support.
Configuration Options
Installation site, fire rules and network practice decide the configuration:
Oil-immersed outdoor type
Oil-immersed
the standard for substations and plant yards.
ONAN / IEC 60076-1 / 30-2,500 kVA
Dry-type indoor unit
Dry-type
for high-rise, tunnel and fire-sensitive sites.
Class F or H / IEC 60076-11 / AN or AF
Custom impedance & tappings
Configuration
matched to the network and load flow study.
IEC / project specification
1750 kVA Transformer Technical Data
| Parameter | Specification |
|---|---|
| Rated capacity | 1,750 kVA, three-phase |
| Primary voltage | 11 / 20 / 33 kV (per project) |
| Secondary voltage | 0.4 kV or custom |
| Cooling | ONAN / ONAF options (oil) · air (dry) |
| Vector group | Dyn11 / Dyn5 / Ynd11 |
| Impedance | per network study (typically 6-8%) |
| Standard | IEC 60076 / GB 1094 |
Loading and Current Data for Planning
At 0.8 power factor the unit delivers about 1,400 kW; full-load current on the 400V secondary is about 2,526 A per phase, on an 11kV primary about 92 A, and on a 33kV primary about 31 A. The secondary current normally requires busbar or multiple cables per phase rather than a single feeder.
Because the secondary current is high, the LV switchgear, busbar and cable terminations must be designed for the rating and its fault level. Subian’s drawings include the terminal arrangement so the LV package can be engineered in parallel with the transformer order.
Indicative full-load figures
| Secondary 400 V | approx. 2,526 A per phase |
|---|---|
| Primary 11 kV | approx. 92 A |
| Primary 33 kV | approx. 31 A |
| Real load at 0.8 pf | approx. 1,400 kW |
How to Compare Wholesale 1750 Kva Transformer Suppliers
Quotations for this equipment often look identical on the first page. The difference sits in what is attached behind the number, and in the three or four lines that decide the installed cost rather than the purchase price.
| What to compare | What a thin quotation leaves out | What to ask for |
|---|---|---|
| Price basis | One figure, no Incoterm | Ex-works, FOB or CIF, and which port |
| Payment terms | A deposit with no security | T/T split, LC at sight or LC 90 days, and the bank |
| Lead time | Weeks counted from the order | Days from drawing approval, with the approval date named |
| Scope of accessories | Core and coils only | Bushings, tap changer, surge arresters, terminal box and oil charge |
| Test witness | A report sent after shipment | FAT date agreed at approval, with the witness named |
| Warranty | A period with no remedy defined | Duration, what is covered, and who pays freight on a claim |
Buyers who compare on price alone usually discover the gap at commissioning. The six lines above are the ones that decide whether the unit or the panel can be energised without site work. OEM and ODM supply is available where the nameplate, manual and packing have to carry a different brand.
Where These Units Ship
Equipment of this class is usually bought in small batches, tested at the factory and shipped as one consignment. Three references show how buyers in different markets specify it.
| Project | Location | Application | Supply model |
|---|---|---|---|
| Pad-mounted units for a solar station | Ecuador | Photovoltaic generation | Direct export |
| Utility distribution transformer supply | Venezuela | Utility distribution | Direct export |
| 33kV main transformer ODM project | Zimbabwe | Mining | ODM supply |
Scope, packing and delivery notes for each project are in the project case library. Send the single-line diagram and the destination port and the reply follows the same structure.
Large Transformer Production and Testing
Larger ratings are built on the same controlled lines with additional process checks, and every unit is fully tested before dispatch.
Winding & Core
Large coils are wound and dried under controlled conditions for consistent losses.
Learn More →
OEM / ODM & Project Supply
EPC contractors and industrial buyers take 1750 kVA units as part of complete electrical packages.
OEM / ODM
Factory-DirectCustom designs integrated into project packages.
Factory direct · Test docs · Export support
Project Supply
Bundled SupplyTransformers, switchgear and panels coordinated from one factory.
Factory direct · Test docs · Export support
Distributor Support
Channel PartnersTechnical data and tender documentation.
Factory direct · Test docs · Export support
Choosing Between Nearby Ratings
Ratings near 1750 kVA include 1600 kVA and 2000 kVA in standard lists. The 1750 kVA unit suits projects whose calculated load sits between those values, or where the network operator accepts non-standard ratings with confirmed losses.
For a large single load the choice also depends on the impedance and short-circuit level the network can accept – a higher kVA at low impedance may raise fault levels beyond the switchgear rating. Subian’s engineers review the load flow before confirming the economical rating.
Choosing a Supplier for This Rating
For a unit of this size, compare the guaranteed losses, the impedance range, the cooling margin and the manufacturer’s type-test evidence. Ask for reference deliveries of similar ratings and for the test format the project consultant requires.
Subian manufactures under ISO9001, ISO14001, ISO45001, CE and UL certified systems with a 110 kV type-test report in the documentation set, and supports projects with drawings, loss data and commissioning documentation.
Confirm delivery and handling: large transformers need transport planning, and a factory that coordinates packing, lifting and site delivery saves the buyer real time.
Certifications & Quality Assurance
Subian’s transformer production runs under ISO9001, ISO14001 and ISO45001 systems with CE and UL certification and type-test evidence to 110 kV class.
Product Certifications
10 kV Dry-Type Transformer Certificate
35 kV Transformer CB Certificate
35 kV Transformer CE Verification
Transformer CE Certificate
Dry-Type Transformer Test Verification
ISO 14001 Environmental Management
ISO 45001 Health & Safety
ISO 9001 Quality Management
110 kV Transformer Type Test Report
UL Certificate of Compliance1750 kVA Transformer Manufacturers & Suppliers FAQ
Questions about the 1750 kVA rating, its loading and project specification.
How many kW can a 1750 kVA transformer supply?
What is the full-load current of a 1750 kVA transformer?
Is 1750 kVA a standard rating?
Oil-immersed or dry-type at this rating?
What documents come with a 1750 kVA transformer?
What information is needed to quote Wholesale 1750 Kva Transformer?
Do you build Wholesale 1750 Kva Transformer to a customer’s nameplate?
Contact Subian
Need the Right Specification?
Tell Subian your target market, product type, quantity and technical requirements. Subian’s team will help you identify a suitable configuration for your project.