Introduction to the revolutionary 3D transformer technology

The 3D distribution transformer with the revolutionary delta (3D) wound core is the ideal "green" transformer

Technology Benefits

  • Increased electricity savings, lower Total Owning Cost (TOC) and reduced CO2 emissions (in and energy saving models)
  • More robust and durable
  • Quieter
  • Promotes better stability in electrical network

Technology History

In 1880, a European engineer and inventor theorized that the optimal three-phase transformer should have a symmetrical delta-shaped (3D) core. However, his theories could not be transformed into reality because there was no manufacturing technology available at the time that could make it commercially viable.

Technology Introduction

  • The core:
    3D wound core
  • The active part:
    3D wound core + coil winding
  • The transformer: 3D energy saving
    oil-immersed hermetically sealed distribution transformer (outdoor installation)
  • The 3D transformer has been commercially available in Europe since 2004 and is billed as the "transformers of the future"
  • Thai Maxwell Electric (TME) began its 3D transformer development program in 2008 and is the first manufacturer in ASEAN to introduce the 3D energy saving oil-immersed distribution transformer in 2012
  • The innovative 3D wound core can only be manufactured using the latest wound core technology (TME has employed similar wound core technology since 1979)
  • The 3D transformer is also known as "Tri-dimensional wound core transformer" or "Triangular wound core transformer"
  • The revolutionary 3D wound core
  • The conventional stacked core

Technology Highlights

Better core construction

Better core construction

Technology Advantages

The revolutionary 3D wound core is the ideal transformer technology. It offers

  • Balanced magnetic circuits and exciting current in all 3 phases
  • Lower no-load losses
  • Reduced vibrations
  • Reduced in-rush currents
  • Better short circuit withstanding capability
  • Reduced exciting (a.k.a. reactive or no-load) currents

Reduced 3rd harmonic effects and total harmonics distortion

Remarks: All comparisons made using a 225kVA 3D wound core transformer and conventional stacked core under specific operating conditions unless otherwise stated.


Technology Benefits

Increased electricity savings

  • 3D energy saving transformer saves 43% more than standard loss transformer in electricity cost from total transformer loss reductions in 5 years.
  • 3D energy saving
    transformer
  • Standard loss
    transformer
  • Electricity cost savings from transformer loss reductions achieved by 3D energy saving transformer
  • Electricity cost from transformer no-load losses
  • Electricity cost from transformer load losses

5 year Return on Investment (ROI)

  • Price of 3D energy saving transformer minus 5 years electricity cost savings from total transformer loss reductions is equal to price of standard loss transformer.
  • 3D energy saving transformer
  • Standard loss
    transformer
  • Electricity cost savings from transformer loss reductions achieved by 3D energy saving transformer
  • Price of 3D energy saving transformer
  • Price of standard loss transformer

Lower Total Owning Cost (TOC)

  • TOC of 3D energy saving transformer over a 20 year period is 28% lower than that of standard loss transformer.
  • 3D energy saving
    transformer
  • Standard loss
    transformer
  • Electricity cost savings from transformer loss reductions achieved by 3D energy saving transformer
  • Electricity cost from transformer no-load losses
  • Electricity cost from transformer load losses
  • Price of 3D energy saving transformer
  • Price of standard loss transformer

Reduced CO2 emissions and trees to offset CO2 emissions

  • The 3D energy saving transformer emits 43% less CO2 and requires 43% less trees to offset CO2 emissions than the standard loss transformer (calculated at 80% average load).

Remarks: All comparisons made using a 1000kVA 3D wound core energy saving transformer (European standard Ao + Ak losses) and conventional stacked core standard loss transformer under specific operating conditions unless otherwise stated.


Applications

  • Ideal for installation sites where low operating sound levels are required
  • Ideal for installation sites with sensitive instruments/equipment (eg. data centers) where low harmonic effects are required or for use as an isolating transformer
  • Ideal for reducing electricity costs in high electricity consumption installation sites (eg. cold storage warehouses that operate 24 hours a day, 365 days a year)

Installation

  • Complies with current outdoor installation conditions and standards
  • Can easily replace existing conventional stacked core standard loss transformers
  • 3D energy saving distribution transformer
  • Installation of transformer on H pole beams: 315 – 1250 kVA
  • Installation of transformer on ground: 315 – 2000 kVA

Installation conditions

Suitable for outdoor installation in Thailand or similar tropical environment or the following environmental conditions

  • Altitude: up to 1,000 m above sea level
  • Maximum ambient temperature: 40oc
  • Average ambient temperature on one (1) day: 35oc
  • Average maximum relative humidity in any one (1) year: 94%
  • Able to design and manufacture to suit other environmental conditions