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

Mini Current Transformer

Mini current transformer, often abbreviated as mini CT, is a compact, lightweight derivative of traditional electromagnetic current transformers, specially designed for low-current monitoring, space-limited electrical equipment and intelligent power measurement systems. Unlike large industrial CTs used in high-voltage power substations, mini CTs shrink magnetic cores, winding structures and installation dimensions while retaining accurate current signal conversion functions, making them an indispensable sensing component in smart electricity, new energy, household appliances and industrial control sectors. This article elaborates on its structural characteristics, working principles, key performance strengths and mainstream application scenarios.

29/06/2026

Industry Information

Industry Information

Lv Current Transformer

Low voltage current transformers (lv current transformer) are fundamental instrument transformers designed for AC power systems rated below 1000V, predominantly 0.66kV and 0.72kV distribution networks. Operating on Faraday's electromagnetic induction principle, they convert large primary load currents into standardized low secondary currents (1A or 5A) for safe measurement, energy metering and circuit protection, forming an irreplaceable link between high-current busbars/cables and sensitive electrical instruments.

26/06/2026

Industry Information

Industry Information

Current Transformer Sensors

Current transformer sensors are widely used electrical measurement devices designed to accurately detect and monitor alternating current (AC) in power systems. They are essential components in electrical protection, metering, automation, and monitoring applications across industrial, commercial, and utility environments.

24/06/2026

Industry Information

AC Voltage Transducer

An AC voltage transducer is an electrical measurement device designed to convert alternating current (AC) voltage signals into a standardized, low-level output signal that can be easily read by control systems, monitoring instruments, or data acquisition systems. It plays a critical role in modern power monitoring, industrial automation, and energy management systems by enabling safe and accurate voltage measurement in high-voltage environments.

23/06/2026

Industry Information

Advantages of Current Transformer

Current transformers (CTs) are essential inductive devices widely used in power distribution, industrial control, and grid monitoring to scale down high primary current into low, safe secondary current for measurement, protection, and control. Compared with direct current measurement and alternative sensing technologies, they possess distinct practical and economic advantages that make them irreplaceable in modern electrical systems.

22/06/2026

Industry Information

Current Transformer Metering

Current transformer (CT) metering serves as the core sensing solution for accurate energy measurement, revenue billing and power consumption tracking across power grids, industrial facilities and commercial buildings. As a category of instrument transformers, metering CTs step down high primary currents from power lines into standardized low secondary outputs (1 A or 5 A) compatible with electronic energy meters, while creating complete electrical isolation between high-voltage primary circuits and low-voltage measuring equipment for operational safety.

18/06/2026

Industry Information

Transformer for Sale

Our factory supplies a full lineup of standard and custom transformers for global industrial, commercial, renewable energy and power distribution projects, covering dry-type resin cast units, oil-immersed distribution transformers, single/three-phase isolation transformers and small control transformers ranging from 0.5 kVA to 3150 kVA. Every model passes strict IEC, CE and ISO 9001 testing, balancing stable performance, energy efficiency and competitive pricing for bulk buyers, electrical contractors and equipment manufacturers worldwide.

17/06/2026

Industry Information

Substation Transformer

A substation transformer is a critical electrical device used in power transmission and distribution systems to step up or step down voltage levels between different parts of the grid. It is typically installed in electrical substations, which act as intermediate nodes between high-voltage transmission lines and lower-voltage distribution networks. The main purpose of a substation transformer is to ensure efficient, safe, and reliable delivery of electrical energy from generation plants to end users such as industries, commercial buildings, and residential areas.

16/06/2026

Industry Information

Power Transducer

Current Sensor

Current Transformer

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Solutions

Mini Current Transformer

Lv Current Transformer

Current Transformer Sensors

AC Voltage Transducer

Advantages of Current Transformer

Current Transformer Metering

Transformer for Sale

Substation Transformer

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