MV VTs Searched | Enhance Safety and Performance with Superior Epoxy Insulators | CIC

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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Based in Taiwan since 1974, CHALLENGE INDUSTRIAL CO., LTD. specializes in manufacturing high-quality electrical products, including MV VTs, 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.

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  • Coil Molded Single-Phase Voltage Transformers (Potential Transformers), Indoor Use
    Coil Molded Single-Phase Voltage Transformers (Potential Transformers), Indoor Use
    EP-3SF/6SF Series

    Voltage transformers of the EP-3SF/6SF Series are coil-molded, single-phase, indoor-type, medium-voltage, epoxy-resin-insulated potential transformers suitable for power systems of 7.2kV or below. Made with either a laminated core (Model EP-3SF2) or a cut core (EP-3SF5 & EP-6SFK), the voltage transformer has two power fuses attached to the primary side. Specific models from this series can be used as an auxiliary power source for circuit breaker operation — that is, as a control power transformer (CPT), also referred to as a control transformer (CTR), industrial control transformer, or machine tool transformer.

  • Voltage Transformers (Potential Transformers) as Circuit Breaker Operation Power Source
    Voltage Transformers (Potential Transformers) as Circuit Breaker Operation Power Source
    EPF-3SF1, EPF-6SF2

    Voltage transformers EPF-3SF1 and EPF-6SF2 are medium-voltage, indoor-type potential transformers cast in epoxy resin, commonly installed on switchgear (3.3kV or 6.6kV) to serve as an auxiliary power source* for circuit breaker operation. Positioned atop the switch as an operational power source, these transformers can handle relatively high outputs for short durations. Featuring Class-F heat-resistant insulation material for the coils, each voltage transformer is equipped with two power fuses on the primary side to safeguard against overload and short-circuit currents. * Auxiliary power source: In this application, the voltage transformer may also be referred to as a "control power transformer" (CPT), "control transformer" (CTR), "industrial control transformer," or a "machine tool transformer."

  • Three-Phase Grounding Voltage Transformer (GVT), or Grounding Potential Transformer (GPT), for MV Indoor Applications
    Three-Phase Grounding Voltage Transformer (GVT), or Grounding Potential Transformer (GPT), for MV Indoor Applications
    EGP-3DF, EGP-6DF

    This ground voltage transformer (GVT), or ground potential transformer (GPT), is a three-phase medium-voltage (MV) potential transformer for indoor applications. With a fuse for each phase, this PT (VT) features epoxy-insulated coils and a five-legged (five-limbed) laminated core. This voltage transformer is used with measuring or monitoring instruments, or for ground-fault protection.

  • 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-20SK, EPF-20SL, EPF-20SNE, EPF-20DZE, EPF-30DE

    Single-pole voltage transformers in this indoor medium-voltage range are epoxy-resin-cast potential transformers designed for 12 kV, 24 kV, and 36 kV power systems. These instrument transformers operate with measuring and monitoring instruments for power system analysis and supervision or in conjunction with protective relays to support system safety and reliability. Selected models can be equipped with a primary-side fuse assembly, and certain models offering a rated thermal burden of 1000 VA or higher may also serve as a power source for circuit breaker operation, functioning as control power transformers (CPT), control transformers (CTR), or industrial control transformers in switchgear and machine tool applications.

  • 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-20SI, EPF-20SN

    Voltage transformers EPF-20SI and EPF-20SN are potential transformers for 12 / 24 kV power systems. These voltage transformers are cast in epoxy resin and designed for indoor applications, offering stable electrical characteristics and compliance with IEC or IEEE standards. Flexible configurations are available to meet different system 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

    Outdoor voltage transformers in the VPF Series are medium-voltage (MV) potential transformers designed for revenue metering applications. As part of a Metering Outfit (MOF), these 15.5–36.5 kV instrument transformers are cast in Araldite® UV-resistant cycloaliphatic epoxy resin and are suitable for long-term outdoor service in harsh environments, including solar ultraviolet radiation, salt fog, high temperature, and high humidity.

  • 36 kV Epoxy-Cast Voltage Transformers (Potential Transformers)
    36 kV Epoxy-Cast Voltage Transformers (Potential Transformers)
    EPF-30SA, EPF-30SB

    Indoor-use voltage transformers (potential transformers) for 36 kV (max.) power systems. IEC type testing & environmental testing (-45℃~+65℃). The choice of major corporations of numerous countries. Insulated with Araldite® epoxy resin. Superior moisture resistance.

  • 36 kV Metal-Clad Voltage Transformer (Potential Transformer) for Indoor Application
    36 kV Metal-Clad Voltage Transformer (Potential Transformer) for Indoor Application
    EPF-30SE

    Intended for the switchgear panels of a 36 kV power system, this single-pole epoxy-cast voltage transformer (potential transformer) for indoor application is covered with an aluminum box. The grounded aluminum box for shielding reduces the installation space requirement.

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