Current Transformer

The core conversion function from high voltage to low voltage

In high-voltage power systems, directly measuring large currents is not only dangerous but also difficult to achieve. This Current Transformer serves as the core conversion component, undertaking the crucial task of converting the large current on the high-voltage side into a standard low-voltage small current for use by instruments and protection devices.

Standardized signal output: It can precisely convert currents of several hundred amperes or even higher from the high voltage side into a standard 5A small current, for use by meters and protection devices.

Dual functions of measurement and protection: It provides precise measurement signals for metering instruments and action signals for relay protection devices, ensuring that the circuit can be quickly disconnected in case of a fault.

System complementarity: It complements the function of voltage transformers and together forms the standard configuration of the high-voltage distribution system, serving as the cornerstone for ensuring the safe operation of the power grid.

Product Parameter

High-precision measurement and metering performance

For power metering and protection, data accuracy is of utmost importance. This Current Transformer achieves industry-leading precision control and can meet stringent metering requirements.

Extremely low measurement error: We offer two high-precision grades, 0.2 class and 0.5 class, which can accurately capture current changes and ensure the authenticity and reliability of metering data.

Wide adaptability: Whether for power energy metering in trade settlement or current measurement for system monitoring, it can provide stable and consistent high-precision data.

Suitable for harsh environments: In those scenarios where measurement accuracy is extremely critical, such as precise metering and critical node protection.

Sturdy and durable fully-sealed protection design

Considering that high-voltage equipment often needs to operate in complex outdoor or industrial environments, we have adopted a fully-sealed structural design to ensure the long-term stability of the equipment under harsh conditions.

High insulation performance: The Current Transformer uses specialized high-voltage insulation protection materials, ensuring reliable insulation performance and effectively preventing the risk of high-voltage breakdown, thereby safeguarding the safety of personnel and equipment.

Waterproof and dustproof capability: The fully-sealed structure gives it excellent waterproof and dustproof capabilities, fully adapting to outdoor environments and eliminating the concern of erosion by rain or accumulation of dust causing malfunctions.

Low failure rate operation: The sturdy sealing design significantly reduces the equipment failure rate, decreases maintenance costs, and ensures the long-term stable operation of the power system.

Flexible and adaptable engineering installation solution

To meet the installation requirements of various power engineering projects, this Current Transformer has been designed with full consideration of the convenience and universality of installation.

Standardized installation interface: The product design complies with industry standards and can be directly installed in switchgear such as high-voltage cabinets and ring-main units, without the need to modify the cabinet structure.

Widely applicable voltage levels: It supports rated voltages of 10KV and 35KV, and the rated current ratio covers a wide range from 5/5 to 2500/5, capable of adapting to various high-voltage distribution scenarios.

Customized services: We offer customization for current ratio and accuracy. Based on your specific high-voltage requirements, we can create an exclusive current transformer solution.

Application Scenarios and Application Domains

High-voltage power distribution system: Used for current measurement and monitoring in high-voltage distribution cabinets to ensure power distribution safety.

Substation project: Undertakes current measurement and relay protection tasks in substations, safeguarding the power grid hub.

Photovoltaic power generation system: Used for high-voltage current measurement and protection in photovoltaic booster stations, facilitating the grid connection of clean energy.

High-voltage engineering project: Current measurement and monitoring in various high-voltage projects, providing precise data support.

Quality Commitment and Service of the Source Factory

As a professional power equipment manufacturer in China, Junray Electrical strictly follows the national standards for current transformers in its production, and is committed to providing customers with high-quality Current Transformers.

Strict factory tests: Every transformer must undergo strict accuracy tests, withstand voltage tests and insulation tests before leaving the factory to ensure stable and safe operation.

Strong manufacturing capabilities: Relying on our own factories and mature production processes, we can guarantee the consistency and reliability of the products, meeting the needs of large-scale engineering procurement.

Professional technical support: We provide comprehensive after-sales service and technical support, answering your questions at any time and safeguarding your power projects.

Frequently Asked Questions

1. Is this Current Transformer suitable for outdoor installation?

Absolutely. The product adopts a fully sealed structure and has excellent waterproof and dustproof performance, which enables it to adapt to various harsh outdoor environments. There is no need to worry about water or dust entering and affecting the operation.

2. What are the differences between precision grades 0.2 and 0.5?

The measurement error of grade 0.2 is smaller and the accuracy is higher. It is usually used in trade settlement scenarios with extremely high measurement requirements. Grade 0.5 has slightly lower accuracy and is suitable for general industrial measurements and protection circuits. You can choose based on your actual needs.

3. Do you offer non-standard customization?

Junray Electrical has a professional technical team that supports customization of parameters such as current ratio and accuracy level. We can create exclusive products based on your specific high-voltage requirements, ensuring perfect compatibility with special scenarios.