Current Transformer

What is Current Transformer?

A current transformer (CT transformer) is a critical instrument transformer designed to safely convert high alternating currents in power systems into much smaller, proportional values. Its primary role is to provide a scaled current signal for measurement and protection devices. Crucially, a CT also offers electrical isolation, ensuring that personnel and sensitive equipment are protected from the dangerous high voltages of the main circuit.

Why Choose Liyond's Current Transformers?

At Liyond, we combine advanced manufacturing capabilities with rigorous quality control to deliver superior current transformers. As a trusted China current transformer supplier, we offer highly competitive factory prices without compromising on performance or reliability. Our commitment to accuracy, safety, and durability ensures that our medium and high voltage CTs meet the demanding requirements of modern power systems. Partner with Liyond for cost-effective, high-quality current transformer solutions backed by extensive industry expertise and excellent service.

Key Features of Liyond Current Transformers

Our range of current transformers is engineered for optimal performance across diverse applications. Key features include exceptional measurement accuracy, typically conforming to stringent international standards, and robust insulation systems (resin, porcelain, or composite) designed for maximum dielectric strength and longevity. Our indoor type current transformer is compact and highly reliable for enclosed environments, while our outdoor CTs offer superior resistance to harsh weather conditions and environmental pollutants, ensuring reliable operation in exposed installations.

Different Types of CT Current Transformer

Current transformers are classified primarily by their operational environment and the voltage level they serve. Indoor current transformers are designed for protected, internal environments like switchgear or control panels, often utilizing compact cast resin insulation. Their design prioritizes space efficiency and protection from internal contaminants.

Conversely, outdoor current transformers are engineered to withstand harsh external elements, including rain, UV radiation, and extreme temperatures. They typically employ robust porcelain or composite insulators, crucial for exposed applications such as substations and transmission lines.
Regarding voltage, medium voltage current transformers handle systems generally up to 36kV, commonly found in industrial facilities and distribution networks. High voltage CTs operate at 66kV and above, essential for major transmission grids and large power generation plants. Each type’s specific insulation and construction ensures accurate current measurement and reliable protection in diverse electrical power systems.