Outdoor Voltage Transformers or Potential Transformers (Epoxy Resin Cast) for Revenue Metering – Designed for MOF | Elevate Power Distribution: Explore Premium Voltage Transformers | CIC

Outdoor Voltage Transformers or Potential Transformers (Epoxy Resin Cast) for Revenue Metering – Designed for MOF / 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.

Featured Products

Outdoor-Type Voltage Transformers (Potential Transformers) for Revenue Metering | 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 Outdoor-Type Voltage Transformers (Potential Transformers) for Revenue Metering, 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.


Outdoor-Type Voltage Transformers (Potential Transformers) for Revenue Metering

VPF Series

Cast in Araldite® UV-resistant cycloaliphatic epoxy resin, these medium-voltage (MV) voltage transformers (potential transformers) for revenue metering are designed for long-term outdoor use in harsh conditions such as solar ultraviolet radiation, salt fog, high temperature, and high humidity. Designed to be part of a Metering Outfit (MOF).

About the Product

Designed to be part of a MOF (Metering Outfit ) for billing purposes, the VPF Series voltage transformers (potential transformers) are insulated with Araldite® UV-resistant cycloaliphatic epoxy resin, enabling these outdoor products to withstand long-term exposure to solar ultraviolet radiation, salt fog, high temperature, high humidity, as well as other harsh environmental conditions.

The choice of numerous power companies, these voltage transformers (potential transformers) have been subjected to tough outdoor conditions for more than 20 years while continuing to perform with stable quality. High in customer satisfaction, the VPF Series voltage transformers are manufactured under exact procedures and stringent quality control, thus ensuring product reliability and great service life.

Product Features and Selection Table
  • For outdoor MOF (Metering Outfit)
  • Standard: IEC or IEEE*
  • Maximum System Voltage: 15.5~36.5 kV
  • Frequency: 50 or 60 Hz

Outdoor-Type Potential Transformers for Billing (Epoxy-Cast), VPF Series - All Models
Outdoor-Type Potential Transformers for Billing (Epoxy-Cast), VPF Series - Selection Table

*Other Standards or specifications available.   
**Model VPF-30S designed for highly polluted conditions.

Available Models

VPF-10AE, VPF-10A, VPF-12E, VPF-12, VPF-20SA, VPF-24E, VPF-24, VPF-30S


Download Documents

Related Products
  • Outdoor-Type Current Transformers / Extended Range Current Transformers (ERCTs) for Revenue Metering (12~36 kV)
    Outdoor-Type Current Transformers / Extended Range Current Transformers (ERCTs) for Revenue Metering (12~36 kV)
    AWF-12, AWF-24, AWF-36

    These outdoor current transformers for revenue metering, intended for 12~36 kV power systems, are used as part of an MOF (Metering Outfit) or for current monitoring. Insulated with UV-resistant cycloaliphatic epoxy resin, these medium-voltage (MV) current transformers are ideal for outdoor use and can be available as Extended Range Current Transformers (ERCTs) when requested.


  • Voltage Transformer (Potential Transformer) for SF6 Gas-Insulated MOF Panel
    Voltage Transformer (Potential Transformer) for SF6 Gas-Insulated MOF Panel
    EPF-20SH

    Intended for power companies, this indoor single-phase epoxy-cast voltage transformer, or potential transformer, is designed to be mounted inside the SF6 gas-insulated MOF (Metering Outfit) panel of a 25.5 kV (max.) power system. With an added tap in the secondary winding, this VT (PT) can offer two voltage ratios (120/60:1).


  • Low-Voltage Current Transformer / Extended Range Current Transformer (ERCT) for Revenue Metering, Window-Type
    Low-Voltage Current Transformer / Extended Range Current Transformer (ERCT) for Revenue Metering, Window-Type
    ROS-A Series

    Extended-Range Current Transformers (ERCT) for Revenue Metering offer precision in billing, with an operating range for accuracy up to 1% ~ 200% of rated current. Our window-type resin-cast current transformers “ROS-A Series” for low-voltage or LV (720 volts / 600 volts, or 0.72 kV / 0.6 kV) applications come in both ERCT and standard varieties. Range of specifications include Metering Class 0.15S, Thermal Rating Factor up to 4.0, Current Ratios from 100:5A to 4000:5A, and multiple window diameter options. Special IP65 outdoor edition is available.


  • 36 kV Epoxy-Cast Voltage Transformers (Potential Transformers)
    36 kV Epoxy-Cast Voltage Transformers (Potential Transformers)
    EPF-30SA, EPF-30SB

    Indoor-use voltage transformers (potential transformers) for 36 kV (max.) power systems. IEC type testing & environmental testing (-45℃~+65℃). The choice of major corporations of numerous countries. Insulated with Araldite® epoxy resin. Superior moisture resistance.


  • Current Transformer for SF6 Gas-Insulated MOF Panel
    Current Transformer for SF6 Gas-Insulated MOF Panel
    MOF-24

    For power companies. To be mounted inside the SF6 gas-insulated MOF panel of a 25.5 kV (max) power system. With 2 primary coils, this current transformer offers 2 current ratios while maintaining the required accuracy and burden rating at each current ratio. Insulated with Araldite® epoxy resin.


  • High-Voltage (HV) Outdoor Current Transformer, 52 kV & 72.5 kV
    High-Voltage (HV) Outdoor Current Transformer, 52 kV & 72.5 kV
    AWF-52, AWF-72

    These high-voltage current transformers (52 kV or 72.5 kV), designed for outdoor use, are available in single-core and two-core varieties. Featuring extended creepage distance and insulated with UV-resistant cycloaliphatic epoxy resin, these current transformers can withstand solar ultraviolet radiation and IEC-defined pollution level III (“Heavy”). They’re especially ideal for regions with salt fog, high temperature, and high humidity.



Related News
14Jul 2023
Outdoor Revenue-Metering Instrument Transformers: Exceptional Reliability Driving Popularity

Since their first introduction, CIC’s outdoor revenue-metering instrument transformers have been well-received by power companies not only in Taiwan but in several Asia and American countries, including Japan, Mexico, and the Philippines.

Read More