Taifengyuan DC current sensor adopts TMR technology, supporting a wide measurement range of 100~600A, with total accuracy ≤0.5% FS, linearity ≤0.2% FS, response time ≤5μs, bandwidth of DC-20kHz, and zero-point temperature drift <0.1mV/℃. It provides an accurate and stable measurement solution for DC metering and industrial control scenarios.

What are the core differences between DC sensors and AC sensors?

DC mode: For measuring constant magnetic fields. It features fast response and low noise, suitable for monitoring batteries and DC power supplies, but susceptible to residual magnetism and zero drift.

AC mode: For measuring alternating magnetic fields. It requires frequency and phase processing and is resistant to DC drift, yet not applicable to pure DC measurement.

How DC Current Sensor Helps Improve Efficiency in DC Power Monitoring Systems?

DC current sensors can capture DC current data right away with precise readings, and these sensors can quickly find abnormal current values and current changes. The sensors respond fast and run steadily when they connect to the system. The connected system can carry out automatic monitoring and send early alerts for faults. These sensors cut down work for manual checks, make data recording and daily maintenance easier, and lift the overall working efficiency of DC power monitoring systems.

Now price of electrical power monitoring equipment is reasonable, anything you need, please contact us.

Ningbo Taifengyuan Electric Intelligent AC Charging Gun, Model TFY-GB-1AC32-MB-015-B-A33-L5-01. Equipped with a built-in metering module to replace the metering module inside charging piles, it features a rated voltage of 250V and a rated current of 32A, meeting Class B metering accuracy. Adopting a detachable gun head design, it facilitates the replacement of faulty charging guns. The ev charging gun supports RS485/4G communication and positioning functions, and the separated structure of gun and pile enables convenient verification and maintenance. With a plug-in service life of ten thousand times, it is safe and durable, and applicable to various AC charging pile scenarios.

Specifications of AC EV Charger

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Taifengyuan (TFY) specializes in high-performance current sensing technology and has built a product matrix based on the dual technical routes of Rogowski coils and TMR magnetoresistance. Rogowski coils feature wide frequency band, high current capacity and no magnetic saturation, making them suitable for power grid, new energy AC and transient measurement. TMR sensors are low-power, high-precision and support galvanically isolated measurement, covering direct metering scenarios for high DC current.

With original technologies and processes that are globally pioneering, its products boast internationally first-class performance and indicators, providing stable and reliable solutions for full-scenario electrical measurement.

How Advanced Current Sensors Improve Energy Efficiency in Industrial Applications

Taifengyuan (TFY) advanced current sensors provide accurate data on current, power, harmonics and energy consumption for power systems through high-precision, wide-frequency-domain and real-time online measurement. Rogowski coil and TMR technologies enable stable data collection under all operating conditions, timely detecting issues such as overload, inefficiency and harmonic loss, accurately locating losses and inefficient working conditions, and supporting intelligent power regulation and energy-saving optimization. Precise data drives efficient equipment operation, greatly reducing reactive power loss and invalid energy consumption, significantly improving energy efficiency and power consumption safety in industrial production, and helping enterprises achieve digital energy conservation and carbon reduction.

In some scenarios where Taifengyuan (TFY) sensors are deployed, they have helped customers reduce energy consumption by more than 30% in their excellent refined power and energy management projects.

Why Choose TFY Current Sensor

Taifengyuan has established strict and comprehensive systems as follows:

01

Strong R&D strength

It owns 210 independent intellectual property rights for core technologies including Rogowski coils and TMR magnetoresistance. It also has a high-end testing laboratory managed in accordance with ISO10012 + JJF1069 + CNAS standards, continuously breaking through the boundaries of frequency response, precision and reliability.

02

Full-process control system

In strict accordance with ISO9001 and ISO10012 standards, Taifengyuan has built a PMMS information-based control system. Through digital management such as PLM and ERP, it has established full-link traceable standards from design and supply chain to manufacturing, ensuring stable and consistent product performance.

03

Top-level precision craftsmanship

It is equipped with dozens of independently developed fully automatic precision winding equipment. The combination of automation and refined processes enables strict control over winding, packaging and calibration, resulting in extremely high consistency and stability. It leads the industry in production capacity and delivery time, and can meet customers' demands ranging from small-volume orders to urgent deliveries.

04

International-grade quality assurance

It strictly implements full-item reliability verification covering temperature change, vibration, shock, aging and other tests, with product lifetime reliability taking the lead in the industry.

05

Full-cycle service support

From preliminary project preparation, model selection and commissioning to later operation and maintenance, it provides rapid response and technical support, minimizing customers' operating costs to almost zero throughout an ultra-long service life.

Taifengyuan (TFY) is not only a component provider, but also a long-term value partner in the field of stable and reliable power measurement.

FAQs about Current Sensor

Do the industrial current sensor support electrical isolation and anti-interference?

Both TFY TMR and Rogowski coil sensors feature excellent electrical isolation and strong anti-interference capabilities, ensuring stable operation in complex industrial electromagnetic environments.

What are the main current sensor types?

TFY current sensors mainly include TMR current sensors and Rogowski coil sensors, which can meet the needs of different accuracy, range, and installation scenarios.

How about the accuracy and response speed of TMR current sensors?

TFY TMR current sensors have high accuracy, with linearity ≤0.1% and response time ≤1μs, making them suitable for high-precision and fast-changing current detection.

What is the maximum measurement range of Rogowski coil sensors?

TFY Rogowski coil sensors support a wide measurement range, typically covering 0–5000A, and can be customized for larger ranges based on customer requirements.

Do the products support customized development?

Yes, TFY can customize current sensors in terms of range, accuracy, structure, and interface according to customer requirements to meet the needs of specialized equipment.

In which industries are current sensors mainly applied?

They are widely used in smart grids, industrial automation, new energy, electric vehicle charging, welding equipment, power monitoring, and other fields.

How about the stability and lifespan of TFY current sensors?

The products use mature processes and reliable components. Both TMR and Rogowski coil sensors have low long-term drift and long lifespans, making them suitable for continuous operation.

How to select the right current sensor for your equipment?

Selection can be based on measurement range, accuracy, installation space, and power supply method. TFY provides professional selection support to recommend the most suitable TMR or Rogowski coil sensor.

As one of current sensor manufacturers, we will do our best to meet all the needs of customers.

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TFY 3 Phase Current Sensors leverage advanced Rogowski coil and TMR magnetoresistance technologies to deliver high-performance solutions for multi-phase current measurement. Featuring a wide frequency band, high current capacity, and immunity to magnetic saturation, the Rogowski coil sensors are ideal for AC power grids, renewable energy systems, and transient current monitoring. Meanwhile, TMR sensors offer low power consumption, high precision, and galvanically isolated measurement, making them suitable for high DC current applications. With globally pioneering technologies and first-class performance, TFY 3 Phase Current Sensors ensure stable, reliable, and accurate electrical measurement across diverse industrial and energy scenarios.

Types of 3 Phase Current Sensor

Flexible Rogowski Coil for Three-Phase Integrator Specialized in Electric Energy Meters (without Piercing Power Taps)

Rogowski coil with three-phase flexible current output for metering terminals

Specialized Three-Phase Four-Wire Integrator for Electric Energy Meters with Piercing Power Taps Flexible Rogowski Coil

Reinforced high-current three-phase flexible Rogowski coil without integrator

Three-phase Integrator Flexible Rogowski Coil

Switch-built-in three-phase electricity meter sensor (AC)

External switch type three-phase electric meter sensor (for IoT meters, AC)

What are the differences between TFY custom Rogowski coils and standard Rogowski coils?

Standard Rogowski coils are of universal specifications with fixed measuring range, size and bandwidth, featuring fast delivery and high cost performance. However, TFY custom Rogowski coil sensors not only have the above characteristics, but can also be tailor‑designed according to requirements such as kA‑level measuring range, 0.1Hz–1MHz bandwidth, installation space, protection grade, terminal interface and communication mode. Their flexible open structure and electrical parameters are more suitable for special working conditions. With fully automatic precision winding technology, they have better consistency and stability than standard Rogowski coil sensors. In addition, TFY Rogowski coil sensors feature extremely high accuracy with an error as low as ±0.1mA, so they can meet the customized demands of special applications such as high‑end equipment and smart grids.

How to Select a Rogowski Coil

Rogowski coils have a wide range of application scenarios and fields. Engineers can refer to the key parameters of the following indicators for selection according to their own needs and different operating environments:

Key Parameters for Rogowski Coil Selection

1.Rated current/range: Match the measured current and reserve overload margin.

2.Output type: Integrating type (voltage output) or non-integrating type (current output).

3.Accuracy and linearity: Determine measurement accuracy; Class 0.5 and Class 0.2 are commonly used.

4.Frequency bandwidth: Affects the ability to measure harmonics, transients, and impulse currents.

5.Phase error: Critical for power metering and relay protection.

6.Structure type: Split/closed, flexible/rigid, which determines installation convenience.

7.Insulation and withstand voltage: Meet the system voltage level and safety distance.

8.Operating temperature and protection grade: Adapt to on-site environments.

9.Size and installation method: Whether live installation or disconnection-free wiring is required.

10. Anti-interference capability: Stability in strong industrial electromagnetic environments.

How can I customize the most suitable Rogowski coil from TFY according to my application scenario?

First, the customer needs to communicate the required key electrical parameters with TFY engineers, such as measuring range, accuracy, transformation ratio, power supply mode, load capacity, communication method, output signal requirements, terminal and interface definition, cable length, and operating environment. TFY engineers will carefully listen to your requirements, provide reasonable suggestions and design solutions. After customer approval, TFY engineers will issue a formal specification for the customer to confirm before proceeding with prototype production. The prototype samples will be tested and qualified by TFY's testing laboratory, then submitted to the customer for testing and approval. After finalization and control of various documents, mass production can be carried out.

How to match a Rogowski coil integrator? What will happen if they are not matched?

A Rogowski coil sensor is essentially a hollow toroidal solenoid structure. Operating based on the law of electromagnetic induction and Ampere's circuital law, it is a specialized sensor for measuring alternating current. According to the magnitude of the primary current, the sensor outputs a voltage signal with a fixed transformation ratio on the secondary side. When a Rogowski coil sensor is not equipped with an integrator, it outputs a differentiated voltage signal. After passing through an integrator and amplification, it outputs an integrated voltage signal with a 90° phase shift. Customer engineers and technicians choose whether to configure an integrator according to their different applications and requirements.

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