Contact Now
Send Message
Privacy statement: Your privacy is very important to Us. Our company promises not to disclose your personal information to any external company with out your explicit permission.
Brand: FERRTX
Origin: China
Certification: RoHS/ISO/UL/CE/IATF16949/CNAS
| Selling Units: | Piece/Pieces |
|---|---|
| Download: |
|
Transportation: Ocean,Land,Air,Express
Place of Origin: China
Supply Ability: 2~8weeks
Certificate: RoHS/ISO/UL/CE/IATF16949/CNAS
Port: Xi'an,Shanghai,HK
Payment Type: L/C,T/T
PCB mount current Transformers are essential components in modern power monitoring, protection, and control systems. They enable accurate AC current measurement without direct electrical connection to the primary conductor, ensuring both electrical isolation and measurement safety.
In real industrial environments, current measurement is not only about reading current values. It directly affects protection accuracy, energy efficiency evaluation, and fault diagnosis reliability.
From field applications in motor drive systems, EV charging infrastructure, and industrial automation equipment, we consistently observe that measurement errors are rarely caused by the current transformer itself. Instead, they are driven by system-level electrical conditions such as:
To maintain stable measurement performance under these conditions, high-current current transformers with optimized saturation margin and thermal stability are widely used in industrial designs.
A current transformer (CT) is a magnetic sensing device that produces a scaled-down secondary current proportional to the primary conductor current.
It is commonly used in:
Unlike direct measurement methods, CTs provide galvanic isolation, ensuring safe and reliable current sensing in high-voltage environments.
In practical engineering design, CT performance is not defined only by turns ratio. It is also strongly influenced by:
High-current current transformers face three major engineering challenges in real applications:
As current levels increase, nonlinear magnetic behavior becomes a dominant factor affecting measurement accuracy.
In one EV charging system project we supported, the customer experienced unstable current feedback during fast charging cycles. The original CT design entered partial saturation during 200–300A transient peaks, which caused instability in the control loop.
After replacing it with a high-current CT design featuring higher saturation margin, waveform distortion at peak load was significantly reduced, and current regulation stability improved across full load conditions.
In practical operation, when a magnetic core approaches saturation, the secondary output no longer scales linearly with the primary current, resulting in distorted measurement signals.
This condition is commonly seen in:
In EV charging applications, current can change sharply within milliseconds. If the CT enters saturation during these peaks, feedback accuracy drops and system stability is directly affected.
High-current systems generate continuous thermal stress during long-term operation.
As temperature rises, both magnetic permeability and winding resistance change, resulting in gradual measurement drift.
In 24/7 industrial systems, thermal drift is often one of the main sources of long-term measurement deviation.
Modern industrial electrical loads are rarely pure sine waves.
Switching power supplies, inverters, and servo drives introduce strong harmonic components. If CT bandwidth is insufficient, waveform reconstruction accuracy decreases, resulting in measurement errors.
A current transformer must maintain linear magnetic response under peak current conditions. Insufficient saturation margin leads to signal compression and inaccurate peak measurement.
FERRTX high-current CT designs are optimized for stable operation under transient overload conditions commonly found in industrial drive and power systems.
For applications requiring higher surge tolerance, high-current current Transformer Solutions are widely used in EV charging and motor drive systems.
Winding resistance directly affects thermal behavior and long-term stability.
Lower resistance reduces self-heating under continuous operation, improving measurement consistency and reliability.
Industrial systems often contain harmonic-rich current waveforms.
A wider frequency response allows more accurate reconstruction of non-ideal current signals and improves measurement fidelity.
Current transformers must provide reliable galvanic isolation between primary and secondary circuits, especially in high-voltage environments such as EV charging systems and industrial power distribution networks.
In industrial automation and power systems, even small measurement deviations can cause:
Therefore, current transformers must be selected not only for accuracy, but also for stability under real operating conditions, including thermal and saturation behavior.
FERRTX current transformer solutions are designed for different industrial current ranges and installation environments:
| Series | Application Focus | Key Advantage |
|---|---|---|
| Split-core CT series | Retrofit installation | No cable disconnection required |
| High-current CT series | Industrial power systems | High saturation margin |
| PCB-mounted CT series | Compact electronics | Space-saving design |
Each series is optimized for specific measurement conditions, including high-current stability, installation flexibility, and long-term thermal reliability.
FERRTX also offers a full range of PCB-mounted current transformers and split-core CT solutions for compact and retrofit applications.
When selecting a current transformer, engineers should prioritize:
In real industrial design, selection is always a balance between accuracy, thermal stability, and mechanical constraints rather than a single electrical parameter.
This content is based on FERRTX engineering experience in industrial power monitoring systems. The focus is on real-world operating conditions rather than ideal laboratory scenarios.
The file is encrypted. Please fill in the following information to continue accessing it
Privacy statement: Your privacy is very important to Us. Our company promises not to disclose your personal information to any external company with out your explicit permission.
Fill in more information so that we can get in touch with you faster
Privacy statement: Your privacy is very important to Us. Our company promises not to disclose your personal information to any external company with out your explicit permission.