Based on the principle of electromagnetic induction, large current is proportionally converted into small current. It has high-precision ratio characteristics and can accurately convert large current on the primary side into small current on the secondary side that can be used by measurement and protection devices. It has excellent insulation performance and can work safely and reliably in high voltage and high current environments.
It is convenient to measure and protect large currents. It provides suitable current signals for ammeters, energy meters, relay protection devices, etc. in the power system, so that these devices can accurately complete the measurement and protection functions. At the same time, it has a sturdy structure, high reliability, low maintenance cost, and can operate stably for a long time.
It is widely used in various links of medium-voltage power systems, such as in the incoming and outgoing line circuits of substations, distribution rooms and other places. It is a key device for realizing current measurement and protection, ensuring the safe operation of the power system and the accuracy of energy metering.
Finding the right current transformer is essential for precise power monitoring and reliable relaying in modern electrical infrastructure. Hangzhou Liyi Electrical Equipment Co., Ltd. (Liyikj) engineers a comprehensive range of high-accuracy models. These devices seamlessly integrate with multi-functional power meters and medium voltage measurement and control devices. As a trusted supplier to the global power industry, we know B2B buyers require absolute reliability. Therefore, strict quality control backs every product we manufacture. We also provide comprehensive global logistics support and a one-year free replacement warranty to ensure long-term operational stability.
We categorize our current transformers based on structural design and technical specifications. This variety meets the diverse demands of industrial power distribution. Whether you are upgrading an active facility or building a new substation, our portfolio offers the exact form factor required.
Our split-core models are ideal for retrofitting existing power systems. You can install them without disconnecting heavy cables or busbars. This innovative design significantly reduces installation time and operational downtime. They are highly preferred for rapid deployment in active switch cabinets and high-density data centers.
Built for heavy-duty industrial power distribution, our window-type current transformers deliver exceptional durability and precision. These solid-core models provide high relaying and metering accuracy. They typically achieve Class 0.2 or Class 0.5 standards. This makes them the perfect choice for new installations requiring maximum measurement fidelity.
Electrical engineers and procurement managers require precise specifications for safe system integration. Our current transformers undergo multiple rigorous tests. This guarantees efficient, stable, and reliable operation under demanding conditions. Below is an overview of critical performance data for our standard and custom models.
| Parameter | Specification Range |
|---|---|
| Standard Voltage Ratings | 600V to Medium Voltage applications |
| Versatile Current Ratios | 100:5 up to 4000:5 (Custom ratios available) |
| Secondary Output Current | 1A or 5A standard |
| Accuracy Classes | Class 0.2, Class 0.5, Class 1.0 for metering and protection |
| Operating Frequency | 50Hz / 60Hz |
Liyikj current transformers are engineered for wide applicability across demanding sectors. These include the electric power industry, communications infrastructure, and modern data centers. They provide critical current sensing for advanced energy management and fault protection. Furthermore, our transformers offer perfect compatibility with complex submetering systems and intelligent switch cabinet control devices. For a fully optimized ecosystem, they pair flawlessly with our proprietary LY-DTS Three-Phase Multifunction Energy Meters. This ensures seamless data transmission and accurate power monitoring.
Selecting the correct current transformer is vital for the safety and accuracy of your electrical network. To help you navigate the selection process, consider the following critical factors before finalizing your procurement.
| Selection Factor | Evaluation Criteria |
|---|---|
| Primary Load Current | Evaluate the maximum operating load to select a primary rating with sufficient headroom. |
| Secondary Output | Ensure the secondary current (1A or 5A) matches the input requirements of connected relays. |
| Physical Window Size | Measure existing cables or busbars to guarantee the transformer window accommodates the conductors. |
| Accuracy Class | Determine if your application requires high-precision metering (Class 0.2) or standard protection relaying. |
As a dedicated current transformer manufacturer, Liyikj relies on a professional R&D team. This team drives technological innovation through independent product development. We offer personalized customization services tailored to your specific scenarios. This ensures even the most unique spatial or electrical requirements are met. Supported by an efficient customer service team, we guarantee rapid response times for all inquiries. Our robust global logistics network ensures safe, timely delivery and comprehensive trade support worldwide. Contact us today to partner with a trusted current transformer supplier and request a customized quote.
We provide a comprehensive suite of documentation for our current transformer series. This assists technical buyers, electrical engineers, and installation teams. Access our dedicated resource hub to download detailed PDF specification sheets and step-by-step installation manuals. You can also find accurate wiring diagrams and complete product catalogs. These resources streamline your evaluation process and ensure proper integration with your power measurement solutions.
Review our frequently asked questions to learn more about our current transformer specifications, compatibility, and comprehensive service offerings.
Lead times vary based on specific technical requirements. However, our professional R&D and production teams ensure rapid turnaround. Combined with our global logistics support, we guarantee efficient delivery to your facility.
You should select a primary current rating slightly higher than your system's maximum operating load. The secondary current must match the input requirements of your connected power meter or relay.
Yes, our current transformers feature standard secondary outputs that integrate seamlessly with most third-party devices. They are also perfectly optimized for use with our proprietary LY-DTS multi-functional power meters.
We offer comprehensive after-sales service, including installation guidance, commissioning, and maintenance support. Additionally, all our current transformers include a free replacement guarantee within one year of purchase.
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