Potential Transformer (PT) / Voltage Transformer (VT)
A Potential Transformer (PT), also known as a Voltage Transformer (VT), is an electrical device used to step down high voltage to a lower, safe level for metering, protection, and monitoring purposes. PTs provide accurate voltage measurement while isolating metering and protection devices from high-voltage circuits. They are widely used in substations, power distribution systems, and industrial installations to ensure safe and precise voltage monitoring.
- Description
Description
Product Range / Variants
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Indoor Potential Transformers
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Outdoor Potential Transformers
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Single-Phase Voltage Transformers
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Three-Phase Voltage Transformers
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Metering PTs (High Accuracy)
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Protection PTs (High Surge Withstand Capability)
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Cast Resin Insulated PTs
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Oil-Immersed / Oil-Filled PTs
Key Features
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Accurate voltage step-down for safe metering and protection
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High insulation strength for reliable operation
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Compact and robust design for indoor or outdoor use
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Compatible with energy meters, protection relays, and SCADA systems
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Standardized primary and secondary voltage ratings
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Flame-retardant and weather-resistant housing for outdoor PTs
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Low burden and minimal voltage drop
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High mechanical and electrical durability
Technical Specifications
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Primary Voltage Rating: Up to 36kV (medium voltage PTs), up to 132kV / 220kV for high-voltage PTs
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Secondary Voltage Rating: 110V / 120V / 100V (standard secondary voltages)
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Accuracy Class: 0.2, 0.5, 1.0, 3.0 (IEC / IS standards)
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Frequency: 50Hz / 60Hz
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Burden: 5 – 15 VA (depending on type and application)
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Insulation Level: Up to 36kV (medium voltage)
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Standards Compliance: IEC 60044-2, IS 3156
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Operating Temperature: -25°C to +55°C
Applications
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Voltage measurement in substations and switchyards
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Energy metering in industrial, commercial, and residential installations
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Protection relay circuits for overvoltage, undervoltage, and fault detection
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Monitoring and automation in power distribution systems
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Renewable energy systems (solar/wind) voltage monitoring
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SCADA and remote monitoring integration
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Industrial control panels and motor control centers
Benefits
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Provides safe and accurate voltage measurement
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Isolates metering and protection devices from high-voltage circuits
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Enables precise energy metering and system monitoring
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Enhances protection system reliability and fault detection
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Durable design suitable for indoor and outdoor environments
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Minimizes voltage drop and ensures accurate readings
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Supports integration with advanced energy management and automation systems
Material Grades / Build Options
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Core Material: Silicon steel laminations, high-quality magnetic steel
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Housing / Insulation: Cast resin, Epoxy, Porcelain (for outdoor PTs), Oil-Filled Enclosure
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Mounting Options: Indoor Panel Mount, Outdoor Pole Mount, Substation Mount
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Primary / Secondary Ratings: Customizable for metering and protection requirements
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Accuracy Class: 0.2, 0.5, 1.0, 3.0
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Enclosure Protection: IP20 / IP30 / IP54 / IP65 (depending on environment)
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Adkrons Exims – Where Innovation Meets Industrial Strength
Adkrons Exims is a leading supplier of world-class industrial equipment, safety solutions, electrical components, and engineered fabrication products. Our focus remains on delivering precision, durability, and consistent performance to help industries operate safely and efficiently. From workshops to large manufacturing units, we are committed to providing reliable products and unmatched customer support.
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