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,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.

DIGITAL SHOWROOM

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Solutions

Your trusted partner for power electronic component solutions

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

Current Transformer Design

A current transformer (CT) is an essential instrument transformer widely applied in power generation, transmission, and distribution systems. Its primary function is to step down high alternating current in power lines to a standardized low current signal for accurate measurement, metering, and relay protection. Modern current transformer design focuses on high measurement accuracy, low electromagnetic loss, good linearity, and strong anti-interference capability to adapt to complex grid operating conditions.

07/09/2026

Industry Information

Industry Information

Current Transformer Vs Voltage Transformer

Current transformers (CT) and voltage transformers (VT, also known as potential transformers PT) are two core instrument transformers widely deployed within power‑grid systems. Both serve to step down high‑level electrical signals to safe, measurable values for meters, protection relays and monitoring devices, yet they differ fundamentally in working principles, connection modes, application purposes and handling requirements.

04/09/2026

Industry Information

Current Transformer Applications

Current transformers (CTs) are essential instrument transformers designed to step‑down high primary current into a standardized low‑value secondary current for measurement, metering and protection. They isolate high‑voltage power systems from low‑voltage control circuits, ensuring operator safety while converting large currents to levels compatible with common electrical devices.

03/09/2026

Industry Information

Industry Information

Differences Between Zero Sequence Current Transformer And Current Transformer

The zero‑sequence current transformer (core balance current transformer)is an important measuring instrument in power systems, which is used to measure zero‑sequence current. A power system consists of three phases: Phase A, Phase B and Phase C, and each phase can operate independently. Zero‑sequence current occurs simultaneously in all three phases. By adopting zero‑sequence current transformers, we can measure such current to guarantee the normal operation of power systems. Conventional current transformers are designed to measure load operating current, while zero‑sequence current transformers are specialized for zero‑sequence current measurement. Therefore, zero‑sequence current transformers require special structures and measuring capabilities to acquire accurate zero‑sequence current readings.

01/09/2026

Industry Information

Principle, Fault Diagnosis And Maintenance of Current Transducer

The basic principle of a current transducer is to convert the measured current into a small‑current signal through a current transformer. The analog signal is then converted into a digital signal by an analog‑to‑digital converter, processed by a microprocessor, and finally outputs standard signals such as 4‑20 mA and 0‑10 V.

31/08/2026

Industry Information

Industry Information

Hubei Tianrui: Professional Current Transformer & Transducer Manufacturer

Hubei Tianrui Electronic is a specialized manufacturer focusing on research, development, production and supply of current transformers and current transducers. Rooted in the electrical sensing industry, we devote ourselves to delivering dependable measurement solutions for power distribution, industrial automation, new‑energy projects and infrastructure across the world. Supported by experienced engineering teams, standardized production lines and rigorous quality inspection procedures, our products comply with mainstream international standards and have gained trust among global industrial clients.

28/08/2026

Industry Information

What Are The Advantages of A Rogowski Coil

A Rogowski coil is a flexible air‑core current‑sensing device widely applied for measuring alternating current and transient impulse current in power electronics, power grids and industrial testing. Compared with traditional current transformers with iron cores, it possesses multiple prominent advantages, making it a preferred choice in numerous modern measurement scenarios.

27/08/2026

Industry Information

How A Small Transformer Works

A small transformer operates based on the principle of electromagnetic induction. It only functions with alternating current and cannot convert direct‑current voltage directly. It is widely applied in power adapters, household appliances and industrial‑control equipment.

21/08/2026

Industry Information

Power Transducer

Current Sensor

Current Transformer

DIGITAL SHOWROOM

Solutions

Current Transformer Design

Current Transformer Vs Voltage Transformer

Current Transformer Applications

Differences Between Zero Sequence Current Transformer And Current Transformer

Principle, Fault Diagnosis And Maintenance of Current Transducer

Hubei Tianrui: Professional Current Transformer & Transducer Manufacturer

What Are The Advantages of A Rogowski Coil

How A Small Transformer Works

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