Medium-Voltage Epoxy-Cast PTs | Elevate Power Distribution: Explore Premium Voltage Transformers | CIC

Coil Molded Single-Phase Voltage Transformers, or Potential Transformers, for Indoor Use (EP-3SF/6SF 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 Coil Molded Single-Phase Voltage Transformers (Potential Transformers), Indoor Use, 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.

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

Medium-Voltage Epoxy-Cast PTs

About the Product

Intended for power systems of 7.2 kV or below, these single-phase coil molded voltage transformers, or potential transformers, are compact and economical. Model EP-3SF2 features a laminated core and is fixed by two metal frames; cut-core models EP-3SF5 and EP-6SFK are fitted on a metal base. All of the models come with two fuses on the primary side and are insulated with Araldite® epoxy resin. The EP-3SF/6SF Series is characterized by high moisture resistance and excellent electrical properties. In addition, the EP-6SFK model can be used as an auxiliary power source for circuit breaker operation (see Specifications).


(Model: EP-3SF2) Coil Molded Potential Transformer, Cut-Core

EP-3SF2

(Model: EP-3SF5) Coil Molded Potential Transformer (Cut Core)

EP-3SF5

(Model: EP-6SFK) Coil Molded Potential Transformer (Cut Core)

EP-6SFK

Specifications*

EP-3SF/6SF Series Coil Molded Single-Phase Potential Transformers - Specifications

* Other standards and specifications available.
** Models with a burden rating of 1000 VA or higher can be used as an auxiliary power source, also called a control transformer (CTR) or control power transformer (CPT), for circuit breaker operation (accuracy N/A).

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