Oil-Immersed Distribution Transformers

1000kVA 6.6kV/415V Low-Loss Three-Phase Oil-Immersed Distribution Transformer

Rated at 1000 kVA, this low-loss three-phase oil-immersed distribution transformer steps 6.6 kV down to 415 V (the wider product family spans 15 kVA to 31500…

Technical specifications

Technical specifications of 1000kVA 6.6kV/415V Low-Loss Three-Phase Oil-Immersed Distribution Transformer
ParameterValue
Product TypeThree-Phase Oil-Immersed Distribution Transformer
Rated Capacity1000 kVA (range 15 kVA–31500 kVA)
Input Voltage6.6 kV
Output Voltage415 V
Frequency50 / 60 Hz
PhaseThree
Winding MaterialCopper / Aluminium
Coil StructureFully Sealed Construction
Vector GroupDyn11 / Yyn0 / Yd11 / YNd11 / Dyn5
Service Life20–30 Years
StandardIEC / GB
CertificationIEC, CE, ISO9001, ISO14001, ISO45001, CQC, GOST, EAC
PackingWooden Case
Package Size280 × 200 × 250 cm
Gross Weight5400 kg

Figures reflect the supplied product data. Actual dimensions, materials, colors, and packaging depend on the confirmed sample and final order agreement.

Why buyers choose it

  • A fully sealed corrugated-fin tank keeps oil away from air, so there's no oxidation, no breathing, and almost no upkeep
  • Low no-load loss combined with a low operating temperature drives high overall efficiency
  • Built to hold up for 20–30 years even in demanding outdoor conditions
  • Broad capacity and voltage coverage, with vector groups configured to order
  • Backed by IEC, CE, ISO9001/14001/45001, CQC, GOST and EAC certification

Standards & certification

Designed and tested to IEC / GB. Millenium production is certified to ISO 9001, ISO 14001 and ISO 45001; the product family carries CE (ECM), UDEM attestation and an EAC declaration of conformity. Every unit passes routine factory tests before dispatch.

Product details

Rated at 1000 kVA, this low-loss three-phase oil-immersed distribution transformer steps 6.6 kV down to 415 V (the wider product family spans 15 kVA to 31500 kVA) and is built to IEC standards. Its sealed corrugated-fin tank keeps the oil free of oxidation and eliminates the need for topping up, supporting a low-maintenance service life of 20–30 years in outdoor and substation distribution roles. Windings are available in copper or aluminium, with construction meeting both IEC and GB standards.

Design & Construction

A hermetically sealed steel tank fitted with corrugated cooling fins keeps the transformer oil isolated from outside air, blocking oxidation and moisture while still shedding heat effectively. High-voltage porcelain bushings and the low-voltage terminal block sit on the tank cover, and the assembly includes pressure-relief and oil-level protection devices. Together these elements deliver steady, low-loss performance that asks very little of maintenance crews.

Applications

Suited to outdoor and indoor distribution work for utilities, industrial facilities, mining operations, oil fields, commercial developments and rural electrification projects that need dependable medium-voltage step-down.

Customisation Options

Project teams can specify capacity, voltage ratio, vector group, winding material (copper or aluminium), tap-changer type (off-load or on-load) and bushing arrangement to match site requirements.

Ordering Information

  • Selling Unit: Single item
  • Packing: Wooden case, 280 × 200 × 250 cm, 5400 kg gross
  • Standards: IEC / GB; certified IEC, CE, ISO9001/14001/45001, CQC, GOST, EAC

Product details in pictures

1000kVA 6.6kV/415V Low-Loss Three-Phase Oil-Immersed Distribution Transformer — detail 1
1000kVA 6.6kV/415V Low-Loss Three-Phase Oil-Immersed Distribution Transformer — detail 2
1000kVA 6.6kV/415V Low-Loss Three-Phase Oil-Immersed Distribution Transformer — detail 3
1000kVA 6.6kV/415V Low-Loss Three-Phase Oil-Immersed Distribution Transformer — detail 4

Frequently asked questions

What is the rated capacity of the 1000kVA 6.6kV/415V Low-Loss Three-Phase Oil-Immersed Distribution Transformer?

The rated capacity is 1000 kVA (range 15 kVA–31500 kVA), with an input voltage of 6.6 kV. Other ratings in the same series are quoted on request.

What are the main advantages of this oil-immersed transformer?

A fully sealed corrugated-fin tank keeps oil away from air, so there's no oxidation, no breathing, and almost no upkeep; Low no-load loss combined with a low operating temperature drives high overall efficiency; Built to hold up for 20–30 years even in demanding outdoor conditions.

Can this product be customised to my specification?

Project teams can specify capacity, voltage ratio, vector group, winding material (copper or aluminium), tap-changer type (off-load or on-load) and bushing arrangement to match site requirements.

Which standards and certifications apply?

Designed and tested to IEC / GB. Millenium production is certified to ISO 9001, ISO 14001 and ISO 45001, and the product family carries CE (ECM), UDEM attestation and an EAC declaration of conformity.

Quotation

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