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3.6 kV/7.2 kV Current Transformers (1-Core/2-Core & Single/Dual-Ratio Options), CR-3(6)S-T Series / 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 3.6 kV / 7.2 kV Current Transformers (1-Core / 2-Core & Single-Ratio / Dual-Ratio Options), 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.

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3.6 kV/7.2 kV Current Transformers (1-Core/2-Core & Single/Dual-Ratio Options), CR-3(6)S-T Series
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3.6 kV / 7.2 kV Current Transformers (1-Core / 2-Core & Single-Ratio / Dual-Ratio Options)

CR-3(6)S-T Series

Intended for the main panel or the motor control panel of a 3.6/7.2 kV power system and designed to be used with measuring or monitoring instruments, or with protective relays. Each CT has a busbar terminal. Insulated with Araldite® epoxy resin.

Indoor MV Epoxy-Cast CT with Busbar Terminal

About the Product

Insulated with Araldite® epoxy resin and intended for the main panel or the motor control panel of a 3.6 or 7.2 kV power system, each of these current transformers for indoor usage has a busbar terminal and is designed to be used in conjunction with measuring or monitoring instruments, or with protective relays.

The two-core model CR-6S-80T is available with a primary current rating of 500～3000A. When offered with a rated primary current of 800A or above, this model has an added tap in the secondary winding and can be used as a dual-ratio CT.

These current transformers are moisture resistant and mechanically robust, while providing excellent electrical performance.

Specifications

  • Standards: IEC or IEEE*
  • Indoor application; epoxy-cast type
  • Insulated with Araldite® epoxy resin
  • Single-Core / Two-Core
  • Single-Ratio / Dual-Ratio
  • Frequency: 50 or 60 Hz
  • Burden Rating: ≦ 3.6 kV (Model: CR-3S-60T/90T) or ≦ 7.2 kV (Model: CR-6S-80T)

Selection Table

Selection Table for 3kV/7kV Current Transformers (Single/Dual-Core & Single/Dual-Ratio Options), CR-3(6)S-T Series

(Model CR-3S-60/90T) Current Transformers

(Model CR-6S-80T) Current Transformer

Figure 1

Figure 2

* Other standards and specifications are available.

** When offered with a rated primary current of 800A or above, this model has an added tap in the secondary winding and can be used as a dual-ratio CT.

Available Models

Series: CR-3(6)S-T Series
Models: CR-3S-60T/90T (CR-3S-60T, CR-3S-90T), CR-6S-80T


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