Potential Transformers

Medium-Voltage Potential Transformers (10~25 kV)

Widely used internationally in revenue and switchboard applications by engineering, construction, and power companies, APSC Potential Transformers (Voltage Transformers) are the result of over 40 years of manufacturing expertise, combined with technology transferred from Messwandler-Bau (MWB) of Germany.

The primary insulation material for APSC's potential transformers is the Araldite® epoxy resin, known for its reliability. The outdoor models make use of cycloaliphatic epoxy resin, similarly to ensure high-quality insulation.

APSC's potential transformers, including OEM/ODM products, are type-tested and routine-tested by APSC-owned, TAF-accredited Advanced Electricity Laboratory (TAF, or Taiwan Accreditation Foundation, is a member of ILAC and a signatory to the ILAC MRA).

Single-Pole Potential Transformers (or Three-Phase PT + GPT)

1-pole potential transformers for 12/24/36 kV power systems. Use with measuring or monitoring instruments, or with protective relays. Optional connector and epoxy housing with a built-in primary fuse. Insulated with Araldite® epoxy resin.
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10/20kV Epoxy-Cast Potential Transformers for Indoor Use

Widely used for 12~24 kV power systems and insulated with Araldite® epoxy resin, these potential transformers are characterized by superior moisture resistance and excellent electrical properties. Customizable for different standards and requirements.
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Potential Transformer for 20kV 4-Way Switchgear (Circuit Breaker Operation Power Source)

Designed for 24kV 4-way switchgear, this MV single-pole potential transformer features a high-voltage elbow-type connector on the primary side and a built-in high-voltage fuse for protection. Exterior coated with a metal conductive mixture for shielding. Secondary side sealed and waterproof. Araldite® epoxy resin as insulation.
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Potential Transformer for SF6 Gas-Insulated MOF Panel

Intended for power companies, this indoor single-phase epoxy-cast 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 PT can offer two voltage ratios (120/60:1).
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10/20kV Epoxy-Cast Potential Transformer (Power Source for Circuit Breaker Operation and Lighting)

1-phase potential transformer for the measuring and monitoring of the voltage signal. Max continuous output: 4000VA. Combination with 1 or 2 smaller-capacity potential transformers forms a 3-phase potential transformer. Cast in self-extinguishing Araldite® epoxy resin.
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Nouvolt Potential Transformers for Billing Outdoor Type 12~36kV

Cast in Araldite® UV-resistant cycloaliphatic epoxy resin, these medium-voltage potential transformers for billing 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).
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