Medium-Voltage Oil-Immersed Transformers | Elevate Power Distribution: Explore Premium Voltage Transformers | CIC

Medium-Voltage Oil-Immersed Transformers / Serving a diverse client base around the world, CIC is a leading manufacturer and supplier of current transformers, potential transformers (voltage transformers), distribution transformers, epoxy insulators, electronic meters, and other electrical and electronic products.

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Medium-Voltage Oil-Immersed Transformers | Enhance Safety and Performance with Superior Epoxy Insulators | CIC

Based in Taiwan since 1974, CHALLENGE INDUSTRIAL CO., LTD. specializes in manufacturing high-quality electrical products, including Medium-Voltage Oil-Immersed Transformers, current transformers, voltage transformers, distribution transformers, epoxy insulators, and power capacitors. With over 45 years of expertise and technology collaboration with Germany's MWB, CIC is ISO certified and offers products recognized for reliability in various industrial applications.

Challenge Industrial Co., Ltd. (CIC) stands at the forefront of electrical innovation, specializing in the manufacturing of current transformers, voltage transformers, distribution transformers, epoxy insulators, and power capacitors. With a legacy built on over 45 years of engineering excellence and leveraging advanced German technology, CIC commits to delivering high-quality, ISO-certified electrical solutions. Their comprehensive product range, paired with an ISO-certified approach and a TAF-accredited laboratory, ensures reliability and performance for a diverse global market. CIC is your go-to source for electrical components that power progress and efficiency.

CIC has been offering customers high-capacity power capacitors since 1974, both with advanced technology and 50 years of experiences, CIC ensures each customer's demands are met.

Medium-Voltage Oil-Immersed Transformers
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Medium-Voltage Oil-Immersed Transformers

MV Oil Transformer Series

CIC’s medium-voltage oil-immersed transformers, characterized by high efficiency and safety, are made with high-permeability silicon steel cores, and insulating oil of a high ignition point.

About the Product

For high efficiency and safety, CIC’s MV oil-type transformers are made with high-permeability silicon steel cores and insulating oil of a high ignition point.

Insulating oil of a high ignition point remains stable at high temperatures and has excellent electrical insulating properties. In addition, such type of transformer oil has low viscosity and excellent oxidation resistance — characteristics that help to reduce the formation of sludge and to ensure free flowing circulation and heat transfer. The properties of such insulating oil make it effective in insulating and cooling the transformer.

According to differences in their capacities, these transformers come in one of two cooling methods available: Oil Natural Air Natural (ONAN) method or Oil Natural Air Forced (ONAF) method.

CIC’s MV oil-immersed transformers are widely used in public constructions, hospitals, schools, factories, and commercial buildings. To ensure product quality, safety, and durability, all units undergo pre-delivery testing by an electricity laboratory accredited by TAF (a member of the ILAC) according to ISO/IEC 17025.

Product Features

  • Cores made with high-permeability cold-rolled grain-oriented silicon steel sheets (CRGO), together with high-conductivity windings, make for low-loss, low-noise, and high-efficiency performance.
  • Insulating oil with high dielectric strength, chemical stability, and thermal conductivity.
  • Coils are made of copper wires (aluminum available upon request).
  • Stringent pre-delivery testing to ensure quality.
  • Custom requests and specifications available.

Specifications

  • Standards: IEC (or specific national standards by request)
  • Number of Phases: 3
  • Frequency: 50 or 60Hz
  • Primary Voltage: 2 x 12 kV (12 or 24kV)
  • Secondary Voltage: 220V, 380V or 440V (one secondary voltage); 190 - 110V or 380 - 220V (two secondary voltages)
  • Capacity: ≤ 2500 kVA
  • Connection Type: Dyn1, Dyn11, etc.
  • Cooling Method: Oil Natural Air Natural (ONAN) or Oil Natural Air Forced (ONAF), depending on transformer capacity.
  • Choice of a thermometer or a thermometer with alarm.

Drawings and Selection Tables

MV Oil Transformers - Drawings and Selection Tables

Note: The data above are given as examples only. Please contact us with your special requests and for final specifications.


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