current transformer,transformer and current transducer Manufacturer & Supplier

WHO WE ARE

Hubei Tianrui Electronic Co., Ltd. was established in 1998. It is a high-tech enterprise specializing in the research and development, manufacturing and sales of various types of current transformer and current transducer. It is among the first batch of national key "little giant" enterprises with specialized, refined, distinctive and innovative features. The company has three subsidiaries, with over 37,000 square meters of its own factory buildings. It has more than 300 registered employees and over 1,000 sets of various types of automated equipment and testing instruments. It has an annual production capacity of 15 million transformers and sensors.Main products cover high-performance transformers of various types and electrical quantity sensors,such as Current Transformer,Split Core Current Transformer,Current Sensor,Power Transducer,Rogowski Coil,Digital Panel Meter and Hall Effect Current Sensor etc.

Power Transducer

A high-performance Power Transducer, integrating the core functions of current transducers and voltage transducers, precisely converts electrical parameters like active/reactive power, current, and voltage into standardized 4–20 mA/0–10 V signals. Ideal for industrial power systems, it ensures reliable monitoring, efficient energy management, and seamless automation, a must-have for optimizing power distribution and reducing operational costs.

Current Transducer:Our premium current transducer precisely captures AC/DC current data and converts it to industry-standard 4–20 mA/0–10 V signals. Easy to mount, low-maintenance, and highly reliable, it cuts operational costs while enhancing power management accuracy for your industrial projects.

Voltage Transducer:This high-performance voltage transducer captures AC/DC voltage data precisely, delivering industry-standard output signals. Low-maintenance, wide-range adaptable and durable, it boosts power control efficiency and suits diverse industrial applications perfectly for your business needs.

Current Sensor

The Current Sensor is an electronic device used to detect, measure, and monitor electric current in a conductor or circuit. Unlike traditional current transformers that rely on electromagnetic induction, current sensors can use a variety of working principles, including the hall effect sensor and high-precision current transducer.

The working principle depends on the sensor type:
Hall Effect Sensor: When current flows through a conductor, it produces a magnetic field. A Hall element placed near the conductor detects this field and generates a voltage proportional to the current. This method allows both AC and DC measurement.

High-Precision Current Transducer:A High-Precision Current Transducer converts current into a proportional signal using Hall effect or magnetic compensation technology. It features high accuracy, low drift, fast response, and strong electromagnetic immunity. Ideal for precise AC/DC current measurement in power systems, automation, and renewable energy applications.

Current Transformer

A Current Transformer (CT) is an essential device in modern power systems, primarily used to measure and monitor alternating current (AC). Its working principle is based on electromagnetic induction. When the primary winding, often consisting of just one or a few turns, carries the main current, it generates a magnetic field in the magnetic core.

Split Core Current Transformer: Measuring current through magnetic induction with a split-core design that allows easy installation without disconnecting cables. It features high accuracy, easy maintenance, and portability, making it ideal for retrofit projects, energy monitoring, and industrial current measurement applications.

Rogowski Coil: Works on the principle of electromagnetic induction, generating a voltage proportional to the rate of change of current. It features excellent linearity, wide frequency response, no magnetic saturation, and easy installation. Ideal for measuring high or transient currents in power systems and industrial applications.

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Solutions

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Smart Grid Energy Metering

In smart grids, current transformers provide accurate current measurement for digital meters.This ensures precise billing, load monitoring, and integration of renewable energy into the power system.
Relay Protection Device

Current transformer (CTs) feed signals to protective relays in factories. When abnormal currents occur, relays trip breakers, preventing motor burnout and costly equipment damage.
High-Precision Current Sensor Solutions And Application Fields

A high-precision current sensor is an advanced device designed to accurately measure electrical current and convert it into a proportional signal suitable for monitoring, protection, or control purposes.

Applications

Extensively used across various industries, including power and energy, railway transportation, mining, and industrial automation etc.

Enable traction monitoring,fault detection, and energy management, ensuring safe,and stable operation of trains and electrical systems.

Rail Transportation

Wide dynamic range, excellent electrical isolation, and power quality management for efficient system operation

Power and Energy Sector

High accuracy, compact design, fast response, electrical isolation, and real-time monitoring for battery, motor, and charging systems.

New Energy Vehicles

small transformer for industial automation

Real-time current monitoring, fault detection, energy management, and process control, ensuring efficient and safe system operation.

Industrial Automation

Equipment protection, energy efficiency, ensuring stable, reliable, and continuous operation of communication networks and data centers.

Communications Industry

Current Transformer (CTs) and Current Sensor for smart building automation

Load management,and power optimization, supporting efficient, safe, and intelligent operation of modern smart buildings.

Building Facility Management

Leader In The Electronics Industry

28 Years Industry Experience

Collection of scientific research, production, sales and service in one of the high-tech power electronics components.
60+ Patents

Including 15 inventions, 40 utility model patents, 6 appearance patents.
Technology R & D

Complete technical team and equipment conditions, 50+ R&D team and support customization.
Advantages

Fully automated production line, customized services, providing feasible solutions.

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Latest News

Industry Information

Donut Current Transformer

A donut current transformer is a type of current transformer designed with a circular opening in the center, allowing a conductor or cable to pass directly through the core. Because of its ring shaped structure, it is commonly called a donut current transformer. These transformers are widely used in electrical measurement, power monitoring, energy management, and protection systems due to their compact design, high accuracy, and easy installation.

27/05/2026

Industry Information

Industry Information

Current Transformer Meter

A current transformer meter is an electrical measuring device that combines a current transformer with a monitoring meter to measure, display, and monitor electrical current in power systems. It is widely used in industrial equipment, commercial buildings, power distribution cabinets, renewable energy systems, and electrical testing applications. The device allows users to safely measure high alternating current without directly connecting the measuring instrument to the main power conductor.

25/05/2026

Industry Information

Current Transformer Cost

Current transformer cost varies greatly depending on the type, accuracy class, rated current, core material, and application. In recent years, Chinese manufacturers have become highly competitive in the global current transformer market because they offer reliable quality at relatively low prices. Many international buyers source current transformers from China for power monitoring systems, energy meters, industrial automation, smart grids, renewable energy systems, and electrical protection equipment.

22/05/2026

Industry Information

Single Phase Transformer

A single phase transformer is an electrical device used to transfer electrical energy between two circuits through electromagnetic induction. It is designed to operate on a single phase alternating current power supply and is widely used in residential, commercial, and industrial electrical systems. The main purpose of a single phase transformer is to increase or decrease voltage levels while maintaining the same frequency. It plays an important role in power distribution, electrical isolation, and equipment protection.

21/05/2026

Industry Information

Closed Loop Current Sensor

A closed loop current sensor is a high precision device used to measure alternating current and direct current in electrical systems. It is also known as a compensated current sensor because it uses a magnetic feedback principle to improve measurement accuracy and stability. Closed loop current sensors are widely used in industrial automation, renewable energy systems, power supplies, motor drives, electric vehicles, and precision monitoring equipment where reliable current measurement is essential.

20/05/2026

Industry Information

DC Voltage Transducer

A DC voltage transducer is an electrical device used to measure direct current voltage and convert it into a standardized output signal that can be safely transmitted, monitored, and processed by control systems, PLCs, data acquisition equipment, or industrial automation platforms. It plays an important role in modern power monitoring systems because it allows high DC voltages to be isolated and transformed into low-level analog or digital signals suitable for measurement and control applications.

19/05/2026

Industry Information

Dc Current Transducers

DC current transducers are devices used to measure direct current and convert it into a standardized output signal that can be safely transmitted to monitoring, control, and automation systems. They are widely used in industrial power systems, renewable energy installations, battery management systems, electric vehicles, telecommunications equipment, and automation control panels. By transforming high DC currents into low-level analog or digital signals, DC current transducers allow accurate current monitoring while providing electrical isolation between the measured circuit and the control system.

18/05/2026

Industry Information

4 20ma Current Sensor

A 4 20mA current sensor is an industrial device used to measure electrical current and convert the measured value into a standardized 4 20mA analog output signal. This type of sensor is widely used in automation systems, industrial monitoring, power distribution, renewable energy systems, and process control applications because of its high reliability, long transmission distance, and strong resistance to electrical interference.

14/05/2026

Industry Information

Power Transducer

Current Sensor

Current Transformer

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Donut Current Transformer

Current Transformer Meter

Current Transformer Cost

Single Phase Transformer

Closed Loop Current Sensor

DC Voltage Transducer

Dc Current Transducers

4 20ma Current Sensor

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