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Standard Potential 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 Potential Transformers (Voltage 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 Potential Transformers
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Standard Potential Transformers (Voltage Transformers)

WHJB Series

WHJB Series Standard Potential Transformers are mainly used as reference PTs (VTs) in a variety of potential (voltage) transformer tests: error tests, characteristic tests, and so on.

About the Product

WHJB Series Standard Potential Transformers are mainly used as reference PTs (VTs) in a variety of potential (voltage) transformer tests: error tests, characteristic tests, and so on. These reference potential transformers 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

Accuracy Class 0.05%, 0.02%, 0.01 % (or other values)
Rated Primary Voltage 6kV (6/√3kV) ~ 35kV (35/√3kV), or other values
66/√3kV ~ 500/√3kV (or other values)
Rated Secondary Voltage 100V (100/√3V), or other values
Power Factor COSθ=1.0
Operating Range 20% - 120% Un
Frequency 50Hz, 60Hz
Note: Technical data listed above are default values. Customer specifications can be requested.


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