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Ground Voltage Transformer (GVT), or Ground Potential Transformer (GPT) / 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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Three-Phase Grounding Voltage Transformer (GVT), or Grounding Potential Transformer (GPT), for MV Indoor Applications | Enhance Safety and Performance with Superior Epoxy Insulators | CIC

Based in Taiwan since 1974, CHALLENGE INDUSTRIAL CO., LTD. specializes in manufacturing high-quality electrical products, including Three-Phase Grounding Voltage Transformer (GVT), or Grounding Potential Transformer (GPT), for MV Indoor Applications, 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.


Three-Phase Grounding Voltage Transformer (GVT), or Grounding Potential Transformer (GPT), for MV Indoor Applications

EGP-3DF, EGP-6DF

This ground voltage transformer (GVT), or ground potential transformer (GPT), is a three-phase medium-voltage (MV) potential transformer for indoor applications. With a fuse for each phase, this PT (VT) features epoxy-insulated coils and a five-legged (five-limbed) laminated core. This voltage transformer is used with measuring or monitoring instruments, or for ground-fault protection.

About the Product

The EGP-3(6)DF Series voltage transformers, designed for indoor applications, are three-phase “grounding potential transformers” (GPT), or “grounding voltage transformers” (GVT). On the primary side, each phase of the voltage transformer, or potential transformer, comes with a fuse to protect against overload and short circuit currents. This type of voltage transformer features coils insulated with Araldite® epoxy resin, as well as a five-legged laminated core. The primary rated voltage is 3300V (Y connection) or 6600V (Y connection). When the VT, or PT, is used in conjunction with measuring or monitoring instruments, the secondary rated voltage is 110V (Y connection).

This voltage transformer can also be used as a grounding voltage transformer for ground-fault protection. When any one phase of the primary side is grounded in an abnormal or accidental situation, the tertiary rated voltage is 0~190V (open-delta connection) or 0~110V (open-delta connection). The tertiary side produces and transmits a ground fault voltage signal to a monitoring device or ground relay, by which the VT (PT) achieves its monitoring purpose and the protection of equipment or individuals.


Specifications*

Standard

IEC or IEEE

Frequency

50 or 60 Hz

System
Voltage

Model: EGP-3DF

≦ 3.6 kV

Model: EGP-6DF

≦ 7.2 kV

Connection

Y-Y-open△

Primary
Fuses

3


Selection Table*

Model

Phase

Primary
Rated Voltage (V)

Secondary Rated Voltage (V)

Tertiary
Rated Voltage (V)

Burden / Accuracy

AC/BIL
(kV)

Approx.
Weight
(kg)

EGP-3DF

3

3300

110

190 (open△)
or
110 (open△)
3X200VA / 1.0CL +
3X200VA / 3P

10/40

57

EGP-6DF

3

6600

110

190 (open△)
or
110 (open△)
3X200VA / 1.0CL +
3X200VA / 3P

20/60

57

*Other standards and specifications available.


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