Current Transformer 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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Current Transformer | 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 Current Transformer, 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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  • 24 kV Two-Core Current Transformer (for Polluted Regions)
    24 kV Two-Core Current Transformer (for Polluted Regions)
    EWF-20DK

    2-core current transformer for a 20~24kV power system. Used in conjunction with measuring or monitoring instruments, and with protective relays. Epoxy cast. Designed to have greater creepage, it is appropriate for polluted regions.


  • Multi-Ratio Current Transformers (Single-Core & Two-Core Options) for 25 kV max. Power Systems
    Multi-Ratio Current Transformers (Single-Core & Two-Core Options) for 25 kV max. Power Systems
    CR-20S Series

    Current transformers for installation in a switchgear panel of a 25kV (max.) power system and to be used with measuring or monitoring instruments, or protective relays. These are economic models suited to locations of high humidity or moderate pollution. The insulation material for the core and the secondary coil is Araldite® epoxy resin.


  • Bushing Current Transformers for Draw-Out Circuit Breakers
    Bushing Current Transformers for Draw-Out Circuit Breakers
    HCB-2415(A), EBF-25M Series

    Multi-ratio bushing current transformers (bushing CTs, or BCTs) designed for 24kV draw-out circuit breakers and to be used with measuring (or monitoring) instruments or protective relays. IEEE 0.3 B-0.9. Cast in Araldite® epoxy.


  • Outdoor-Type Current Transformers / Extended Range Current Transformers (ERCTs) for Revenue Metering (12~36 kV)
    Outdoor-Type Current Transformers / Extended Range Current Transformers (ERCTs) for Revenue Metering (12~36 kV)
    AWF-12, AWF-24, AWF-36

    These outdoor current transformers for revenue metering, intended for 12~36 kV power systems, are used as part of an MOF (Metering Outfit) or for current monitoring. Insulated with UV-resistant cycloaliphatic epoxy resin, these medium-voltage (MV) current transformers are ideal for outdoor use and can be available as Extended Range Current Transformers (ERCTs) when requested.


  • 36 kV Multi-Ratio Current Transformers (Indoor Use)
    36 kV Multi-Ratio Current Transformers (Indoor Use)
    EWF-30D Series

    Suited to ≤ 36kV power systems, these multi-ratio current transformers are available in 2-core and 3-core options. Insulated with Araldite® epoxy and intended to work with measuring or monitoring instruments, or with protective relays.


  • High-Voltage (HV) Outdoor Current Transformer, 52 kV & 72.5 kV
    High-Voltage (HV) Outdoor Current Transformer, 52 kV & 72.5 kV
    AWF-52, AWF-72

    These high-voltage current transformers (52 kV or 72.5 kV), designed for outdoor use, are available in single-core and two-core varieties. Featuring extended creepage distance and insulated with UV-resistant cycloaliphatic epoxy resin, these current transformers can withstand solar ultraviolet radiation and IEC-defined pollution level III (“Heavy”). They’re especially ideal for regions with salt fog, high temperature, and high humidity.


  • Overvoltage Protector for Current-Transformer Protection
    Overvoltage Protector for Current-Transformer Protection
    CCTP-03

    When a power system is in operation, it is imperative that the secondary of the current transformer(s) should not have an open circuit. When an open circuit occurs, an extremely high transient voltage will be induced, which can in turn damage the current transformers and the instruments at the secondary, or even posing a threat to personal safety. This CT secondary overvoltage protector offers protection from such accidental damage caused by secondary transient voltage.


  • Multi-Channel Electronic Energy Meter
    Multi-Channel Electronic Energy Meter
    CED-4C ML

    For multi-channel measurements, this advanced multifunction energy meter comprises 4 modules within one energy meter. RS485 Modbus Communion is provided through 2 x RJ45 connectors.


  • Multi-Function Power Meters – Smart Energy Analyzers for Monitoring of Electrical Parameters in Single-Phase & 3-Phase Systems
    Multi-Function Power Meters – Smart Energy Analyzers for Monitoring of Electrical Parameters in Single-Phase & 3-Phase Systems
    CMFM-F, CMFM-G

    Multi-Function Power Meters CMFM Series are high-speed multi-purpose energy analyzers. These smart power analyzers have a sampling rate of 128 samples per cycle and can accurately measure and display multiple parameters for 1P2W, 1P3W, 3P3W and 3P4W power systems. Suited for the monitoring of power consumption in distribution panels, these multi-function power meters are also used for the power management and power quality analysis in factories, office buildings, and residential towers.


  • DIN Rail Electronic Energy Meter
    DIN Rail Electronic Energy Meter
    CED Series

    This multi-functional DIN rail electronic energy meter, designed for monitoring energy usage, has multiple advantages, which include excellent reliability and ease of installation. The units are lightweight (the one-phase module is only 18mm wide). This compact meter can withstand currents up to 100-amps and can double that if used in conjunction with an appropriate current transformer. This meter is also available in a three-phase unit. Both the one-phase and three-phase models can support RS485 communication.


  • Split-Core Current Sensors C06 Series
    Split-Core Current Sensors C06 Series
    C06-05E, C06-10E, C06-15E, C06-20E, C06-25E

    Hinged clip and compact design for easy installation. Current input range: 5 A – 25 A.


  • Split-Core Current Sensors C10 Series
    Split-Core Current Sensors C10 Series
    C10-15E, C10-30E, C10-50E, C10-60E, C10-75E

    Hinged clip and compact design for easy installation. Current input range: 15 A – 75 A.


  • Split-Core Current Sensors C16 Series
    Split-Core Current Sensors C16 Series
    C16-50E, C16-80E, C16-100E, C16-120E, C16-150E

    Hinged clip and compact design for easy installation. Current input range: 50 A – 150 A.


  • Split-Core Current Sensors C24 Series
    Split-Core Current Sensors C24 Series
    C24-100E, C24-150E, C24-200E, C24-250E, C24-300E

    Hinged clip and compact design for easy installation. Current input range: 100 A – 300 A.


  • Split-Core Current Sensors C36 Series
    Split-Core Current Sensors C36 Series
    C36-200E, C36-300E, C36-400E, C36-500E, C36-600E

    Hinged clip and compact design for easy installation. Current input range: 200 A – 600 A.


  • Current Sensors With Lead Wire Output
    Current Sensors With Lead Wire Output
    CO06, CO07, CO09, CO13, CO15, CO20, CO26

    CO Series Current Sensors, with two wire leads for connection. Current input range: from 5 A to 600 A.


  • PCB-Mounting Current Sensors (5 A ~ 25 A)
    PCB-Mounting Current Sensors (5 A ~ 25 A)
    CU05

    PCB Mount Type Current Sensors. Primary Current: 5 A ~ 25 A.


  • PCB-Mounting Current Sensors (5 A ~ 150 A)
    PCB-Mounting Current Sensors (5 A ~ 150 A)
    CU07, CU09, CU13

    PCB Mount Type Current Sensors. Primary Current: 5 A ~ 150 A.


  • Digital Tester (Comparator) for Instrument Transformers
    Digital Tester (Comparator) for Instrument Transformers
    WHES-1Cx

    Digital Tester (Comparator) for Instrument Transformers is designed for the testing of ratio error and phase displacement of current transformers and voltage transformers (potential transformers).


  • Standard Current Transformers
    Standard Current Transformers
    WHLB Series

    WHLB Series Standard Current Transformers are mainly used as reference CTs for current transformer measurements and tests: error tests, characteristic tests, and so on.


  • Burden for Current Transformer
    Burden for Current Transformer
    WFY 47, 49 & 47-49

    Burden for Current Transformer is mainly used for loading a CT during testing. Available in several structural designs for use in a variety of testing environments, this Burden for Current Transformer is compliant with IEC 60044-1 or ANSI/IEEE C57.13. Customer specifications can also be requested to satisfy different requirements.


  • Instrument Transformer Testing System
    Instrument Transformer Testing System
    WHES Series

    WHES Series Instrument Transformer Testing System is designed to measure various properties of electromagnetic current transformers and potential transformers (voltage transformers).


  • Current Transformers (CT) - Instrument Transformers
    Current Transformers (CT) - Instrument Transformers

    Current transformers, abbreviated as CT, are specialized transformers used in AC electrical circuits. Together with voltage transformers (VT), they are collectively known as "instrument transformers." Current transformers function by transforming higher current (I1) on their primary side into lower current (I2) on their secondary side, maintaining a specific ratio. Typically, the secondary current is transformed into 5A or 1A, as prescribed by current IEC and IEEE regulations. The transformed current can be easily and safely measured, serving the purpose of monitoring and measuring electricity consumption in circuits and systems. Current transformers can also play a crucial role in providing protection to the primary side electrical circuits.


  • Low-Voltage (LV) Current Transformers (CT) 0.72 kV max.
    Low-Voltage (LV) Current Transformers (CT) 0.72 kV max.

    Low-voltage current transformers by CIC are manufactured in two main insulation styles: ABS-encased or cast-resin types. In terms of structure, the LV current transformer series offers different variations, including window-type and split-core models. Functionally, there are two main types: metering (measurement) CTs and protection CTs. There are also zero-phase current transformers (ZCTs) suitable for outdoor or indoor use by utility companies or high-voltage end-users to protect against high-voltage power cable leakage and support other monitoring needs. This product line also includes special types, such as dry-type bushing current transformers (BCT), ideal for GIS switches or transformer bushings. All types and specifications of current transformers from CIC undergo type tests and routine tests conducted by CIC's Advanced Electricity Lab, accredited by the ILAC member TAF, ensuring product quality. With over 45 years of professional experience, CIC manufactures a wide range of high-quality and versatile current transformers. Our diverse product specifications cater to the needs of various customer groups. We also offer customization and ODM/OEM services. Due to the high precision and stable quality of our products, they are widely adopted in billing, power supply, and distribution projects by utility companies, factories, major engineering ventures, and construction companies worldwide.



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