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.

Partners

Latest News

Industry Information

What Is The High Precision Current Sensor

High precision current sensors are core measuring components designed to capture tiny variations of electric current with extremely low measurement error, high stability and outstanding resolution. Unlike ordinary conventional current sensors that only meet basic detection demands, high-precision models target scenarios requiring rigorous current monitoring, accurate energy metering and closed-loop automatic control, and they have become indispensable hardware in new energy power systems, industrial automation, medical electronics, aerospace equipment and high-end laboratory testing.

03/08/2026

Industry Information

How Does The Zero-sequence Current Transformer Work?

The zero sequence current transformer (core balance current transformer) is an essential sensor applied in power distribution systems for earth leakage and ground fault protection. It utilises the vector superposition principle of alternating currents and electromagnetic induction to detect residual leakage current, acting as the core element of leakage protection devices.

31/07/2026

Industry Information

What Is The Three Phase Current Transformer

A Three Phase Current Transformer (Three Phase CT) is an electrical measuring device designed to accurately measure the current flowing in three-phase power systems. It is a specialized type of current transformer that contains multiple primary and secondary windings, allowing it to monitor the curr

30/07/2026

Industry Information

What Is a Small Power Transformer?

A small power transformer is an electrical device designed to transfer electrical energy between two circuits through electromagnetic induction while changing the voltage level to meet the requirements of different electronic or electrical systems. Unlike large power transformers used in power transmission networks, small power transformers are compact, lightweight, and mainly used for low-power applications such as electronic equipment, control systems, industrial automation, communication devices, and household appliances.

29/07/2026

Industry Information

Industry Information

How Does A Rogowski Coil Work?

A Rogowski coil is a flexible, air-cored current transducer widely used to measure alternating current, pulsed current and fast transient current. Unlike traditional current transformers built around ferromagnetic cores, it contains no magnetic iron core, which eliminates saturation effects and allows measurement of extremely large current values. Its unique structure and operating principle make it indispensable in power electronics, high-voltage testing and industrial power monitoring.

28/07/2026

Industry Information

Industry Information

What Is a Split Core Current Transformer and How Does It Work?

A split core current transformer is an advanced current measurement device engineered for accurate electrical current monitoring without requiring power interruption or cable disconnection. Compared with conventional closed-core current transformers that need the conductor to be removed during installation, a split core CT adopts a hinged and detachable core design, enabling quick and convenient installation directly around existing cables or busbars. With its non-invasive installation capability, high measurement reliability, and flexible application options, it is widely used in energy monitoring systems, power distribution management, electrical retrofits, and industrial automation applications.

27/07/2026

Industry Information

How Does A Current Transducer Works?

A current transducer is a precision electrical measurement device designed to convert a high or low input current into a proportional output signal that can be safely processed by monitoring, control, and protection systems. By providing accurate current measurement with electrical isolation, current transducers allow engineers to monitor power consumption, optimize system performance, and protect electrical equipment from abnormal operating conditions.

24/07/2026

Industry Information

Miniature Current Transformer

A miniature current transformer (miniature CT) is a compact electrical device used to measure and monitor alternating current (AC) in electrical systems. It works based on the principle of electromagnetic induction, converting a high primary current into a smaller, proportional secondary current that can be safely measured by instruments such as meters, protection relays, energy monitoring systems, and control equipment.

23/07/2026

Industry Information

Power Transducer

Current Sensor

Current Transformer

DIGITAL SHOWROOM

Solutions

What Is The High Precision Current Sensor

How Does The Zero-sequence Current Transformer Work?

What Is The Three Phase Current Transformer

What Is a Small Power Transformer?

How Does A Rogowski Coil Work?

What Is a Split Core Current Transformer and How Does It Work?

How Does A Current Transducer Works?

Miniature Current Transformer

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