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Van Gogh Electric,Epoxy resin cast dry-type transformer,Electronic equipment & Instruments

SUMEC INTERNATIONAL TECHNOLOGY CO.,LTD
2/10 fairsForeign Trade Company
Van Gogh Electric,Epoxy resin cast dry-type transformer,Electronic equipment & Instruments
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About this product

  • Size: ·
  • Color: ·
  • Phase: Other
  • Principle: Other
  • Insulation mode: Other
  • Exports to: Mainland China, Middle East
Product details
Size·
Color·
PhaseOther
PrincipleOther
Insulation modeOther
From the supplier

Dry-Type Transformers Below 35kV: Overview‌
Dry-type transformers below 35kV are oil-free power equipment utilizing epoxy resin casting or Nomex paper insulation, widely applied in distribution systems. Key specifications include a voltage class ≤35kV and capacity ranging from 30 to 6300kVA. Below is an analysis of their structure, performance, and applications:

I. Structural Features‌
Winding Technology‌
High-voltage windings are made of enameled copper wire or copper foil, while low-voltage windings primarily use copper foil. All windings are reinforced with fiberglass and vacuum-cast in epoxy resin, forming a robust, bubble-free insulation layer.
Core Design‌
Constructed from grain-oriented cold-rolled silicon steel sheets, assembled with a 45° fully staggered step-lap joint process. Surface resin coating provides rust resistance and noise reduction.
Cooling System‌
Integrated longitudinal ventilation channels enable natural cooling. Forced-air cooling (via fans) can boost rated capacity by 40–50%.
II. Performance Advantages‌
Safety & Environmental Benefits‌
Flame-retardant, self-extinguishing, and free of toxic emissions. Eliminates the need for fireproof or explosion-proof facilities, enabling direct installation in load centers.
Reliability‌
Partial discharge levels ≤5pC (≤10pC for certain models), robust resistance to short circuits and lightning strikes, and operation in temperatures from -30°C to +40°C.
Energy Efficiency‌
No-load losses 20% below national standards, load losses 15% lower, and noise reduced by ≥15%.
III. Typical Applications‌
High-Risk Environments‌: High-rise buildings, airports, commercial hubs, and other fire-sensitive locations.
Harsh Conditions‌: Humid, dusty, or corrosive atmospheres, and industrial settings with frequent load cycling.
Smart Features‌: Optional BWDK temperature control systems with platinum resistance sensors for real-time winding monitoring and automated cooling activation.

These transformers minimize footprint through compact design while achieving low lifecycle costs due to maintenance-free operation.

About the supplier

SUMEC INTERNATIONAL TECHNOLOGY CO.,LTD
  • Exhibited at 2 recent Canton Fairs
  • Foreign Trade Company
  • Founded 1999
  • 1 certificate on file
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Manufacturing exhibitors show in Phase 1 of the Canton Fair, 15 to 19 October 2026.

Supplier
SUMEC INTERNATIONAL TECHNOLOGY CO.,LTD
Nanjing, Jiangsu, China
33
trust
  • Exhibited at 2 recent Canton Fairs
  • Foreign Trade Company
  • Founded 1999
  • 1 certificate on file
Canton Fair booth: 17.1B33 · Power Machinery and Electric Power (139th session)

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