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

Standard Current Transformers
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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.

About the Product

WHLB Series Standard Current Transformers are mainly used as reference CTs for current transformer measurements and tests: error tests, characteristic tests, and so on. These reference current transformers, available in various accuracy levels, are in compliance with IEC 60044 (IEC 61869) or ANSI/IEEE C57.13. They can also be made according to other requirements and specifications.

Specifications

ModelWHLB Series
Primary Current Range5 ~ 5000 A
Rated Secondary Current5A, 1A
Accuracy Class0.05%, 0.02%, 0.01 % (or other values)
Rated Secondary Burden0.2Ω (or according to user requirements)
Power FactorCOSθ=0.8 (low voltage level)
COSθ=1.0 (high voltage level)
Operation Range1% - 120% In
Frequency50Hz, 60Hz
Voltage LevelAC 600V (low voltage level)
AC 10kV, 35kV, 50kV, or other values (high voltage level)
Note: Technical data listed above are default values. Customer specifications can be requested.


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