Indoor and Outdoor MV Voltage Transformers 12-24 kV | Elevate Power Distribution: Explore Premium Voltage Transformers | CIC

Indoor & Outdoor VT Instrument Transformers for Metering, Distribution and More | 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 (MV) Voltage Transformers / Potential Transformers 12-24 kV | Revolutionize Your Energy Systems with Advanced Distribution Transformers | CIC

Based in Taiwan since 1974, CHALLENGE INDUSTRIAL CO., LTD. specializes in manufacturing high-quality electrical products, including Medium-Voltage (MV) Voltage Transformers / Potential Transformers 12-24 kV, 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 45 years of experiences, CIC ensures each customer's demands are met.

Medium-Voltage (MV) Voltage Transformers / Potential Transformers 12-24 kV

Indoor & Outdoor VT Instrument Transformers for Metering, Distribution and More

Indoor and Outdoor MV Voltage Transformers 12-24 kV
Indoor and Outdoor MV Voltage Transformers 12-24 kV

12-24 kV Voltage Transformers (VT) by CIC constitute a stellar range of indoor and outdoor potential transformers designed for various electrical applications, including metering, distribution, and specialized functions. Distinguished by their unique and advanced features, along with superior performance, this remarkable series of voltage transformers has garnered significant interest and widespread acclaim from numerous customers in the expansive international market.

In addition to the widely adopted 12/24 kV series, this versatile range includes single-pole voltage transformers that can be combined into 3-phase VT and Ground Potential Transformer sets. Also available are voltage transformers designed specifically for SF6-insulated MOF panels. The lineup further encompasses dual-functioning models that serve as both voltage transformers and control power transformers, providing an additional function as power sources for circuit breaker operation. Another distinctive offering is the voltage transformer with a metal conductive coating for shielding. Completing this essential selection are the UV-resistant outdoor voltage transformers for revenue metering, highly sought after by power companies in many countries.

The primary insulation material for CIC Voltage Transformers is Araldite® epoxy resin, with outdoor VTs specially utilizing UV-resistant cycloaliphatic epoxy resin. The type tests and routine tests for CIC's medium-voltage voltage transformers are conducted by CIC's Advanced Electricity Lab, accredited by TAF, a member of ILAC, ensuring exceptional quality. With decades of expertise in voltage transformer manufacturing, CIC offers customization and ODM/OEM services, widely adopted by power utilities, major projects, and construction companies worldwide for metering and distribution projects.


Explore our featured selections below for this category. Click any product to learn more.

For our full range or specific inquiries, please contact us directly.

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  • Single-Pole Voltage Transformers (Potential Transformers), or Three-Phase VT (PT) + GVT (GPT)
    Single-Pole Voltage Transformers (Potential Transformers), or Three-Phase VT (PT) + GVT (GPT)
    EPF-10CE, EPF-10DE, EPF-20SK, EPF-20SL, EPF-30DE

    Voltage transformers from this series are indoor medium-voltage single-phase epoxy-resin-cast potential transformers suitable for 12kV, 24kV, and 36kV power systems. They are used in conjunction with measuring instruments for system monitoring and analysis or in combination with protective relays. Specific models can be equipped with a combination fuse assembly on the primary side. Additionally, models with a maximum thermal burden of 1000 VA can also function as a power source for circuit breaker operation, meaning they can serve as "control power transformers" or "control transformers," also known as CPT or CTR, or "industrial control transformers" or "machine tool transformers."


  • 12 kV & 24 kV Epoxy-Cast Voltage Transformers (Potential Transformers) for Indoor Use
    12 kV & 24 kV Epoxy-Cast Voltage Transformers (Potential Transformers) for Indoor Use
    EPF-10B/20SE/20SI

    Widely used for 12~24 kV power systems and insulated with Araldite® epoxy resin, these voltage transformers, or potential transformers, are characterized by superior moisture resistance and excellent electrical properties. Customizable for different standards and requirements.


  • Conductive Shield Voltage Transformer (Potential Transformer) for 24 kV 4-Way Switchgear (Also Operation Power Source)
    Conductive Shield Voltage Transformer (Potential Transformer) for 24 kV 4-Way Switchgear (Also Operation Power Source)
    EPF-20FB

    This voltage transformer is a single-phase, epoxy-resin-cast medium-voltage potential transformer designed to also function as an operation power source*, specifically paired with 24kV 4-Way Switchgear. It features a high-voltage elbow-type connector on the primary side and includes an internal high-voltage power fuse for protection. The exterior of the voltage transformer is coated with a conductive metal mixture for shielding, and waterproof treatment can be requested for the secondary side. The voltage transformer has a rated burden and accuracy of 600 VA / 3.0 CL.* Operation power source: In this application, the voltage transformer can also be referred to as a "control power transformer" (CPT), "control transformer" (CTR), "industrial control transformer," or a "machine tool transformer."


  • Voltage Transformer (Potential Transformer) for SF6 Gas-Insulated MOF Panel
    Voltage Transformer (Potential Transformer) for SF6 Gas-Insulated MOF Panel
    EPF-20SH

    Intended for power companies, this indoor single-phase epoxy-cast voltage transformer, or potential transformer, is designed to be mounted inside the SF6 gas-insulated MOF (Metering Outfit) panel of a 25.5 kV (max.) power system. With an added tap in the secondary winding, this VT (PT) can offer two voltage ratios (120/60:1).


  • 12 kV & 24 kV Epoxy-Cast Voltage Transformer (Potential Transformer) or Control Power Transformer, as Power Source for Circuit Breaker Operation and Lighting
    12 kV & 24 kV Epoxy-Cast Voltage Transformer (Potential Transformer) or Control Power Transformer, as Power Source for Circuit Breaker Operation and Lighting
    EPF-20DZ

    This voltage transformer, cast with self-extinguishing epoxy resin, is a medium-voltage, indoor-type, single-phase potential transformer for a 12kV or 24kV power system for measuring and monitoring voltage signals. With a continuous output capacity of 4000 VA (max.), it can also serve in a small substation or a switchgear panel as a power source for circuit breaker operation and lighting equipment*.* Power source for circuit breaker operation and lighting equipment: In this application, the voltage transformer can also be referred to as a "control power transformer" (CPT), "control transformer" (CTR), "industrial control transformer," or a "machine tool transformer."


  • Outdoor-Type Voltage Transformers (Potential Transformers) for Revenue Metering
    Outdoor-Type Voltage Transformers (Potential Transformers) for Revenue Metering
    VPF Series

    Cast in Araldite® UV-resistant cycloaliphatic epoxy resin, these medium-voltage (MV) voltage transformers (potential transformers) for revenue metering are designed for long-term outdoor use in harsh conditions such as solar ultraviolet radiation, salt fog, high temperature, and high humidity. Designed to be part of a Metering Outfit (MOF).



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