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What Is A Split Core Current Transformer (CT)?

A split core current transformer, also known as a clamp-on CT, is a special type of instrument current transformer designed for measuring alternating current without disconnecting the primary conductor. Unlike conventional solid-core CTs, whose iron core forms a closed, unbreakable ring, the magnetic core of a split core CT is cut into two separable halves. Users can open the core, wrap it around an existing cable or busbar, then lock the two core segments together to reconstruct a complete magnetic loop. This unique mechanical structure is its most defining feature.

2026-08-17
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What Is A Split Core CT?

One main feature of a split core CT​ is its convenient installation. Users do not need to cut cables or shut down the power supply during setup. This reduces downtime and improves safety, especially in existing power systems. Another advantage is electrical isolation, which separates high‑voltage primary circuits from low‑voltage secondary circuits. This design protects measuring instruments and workers from electric hazards. Split core CTs also offer stable accuracy and are available in different precision classes to support monitoring, metering, and protection applications. They are lightweight and compact, making them suitable for use in narrow spaces such as distribution boxes and control cabinets.

2026-03-19
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What Is A Donut Current Transformer?

A donut current transformer, also widely known as a toroidal current transformer (CT), is a specialized device engineered for precise alternating current (AC) measurement and circuit protection in electrical systems. Distinguished by its solid, ring-shaped core structure, the donut CT features no discrete primary winding. Instead, the conductor carrying the measured current passes directly through its central aperture, functioning as a single-turn primary. This unique design integrates the primary conductor into the device's core, eliminating the need for additional winding connections and streamlining installation in both new constructions and industrial setups.

2026-03-18
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Split Core CTs in Smart Grid & Distribution Systems: Enhancing Efficiency And Monitoring

As the demand for energy continues to rise, the need for more efficient, flexible, and reliable power systems has never been greater.

2026-01-27
Company News

16C-07_1757_1200.png
What Is A Split Core Current Transformer (CT)?

A split core current transformer, also known as a clamp-on CT, is a special type of instrument current transformer designed for measuring alternating current without disconnecting the primary conductor. Unlike conventional solid-core CTs, whose iron core forms a closed, unbreakable ring, the magnetic core of a split core CT is cut into two separable halves. Users can open the core, wrap it around an existing cable or busbar, then lock the two core segments together to reconstruct a complete magnetic loop. This unique mechanical structure is its most defining feature.

2026-08-17
307-5_1343_800.jpg
What Is A Split Core CT?

One main feature of a split core CT​ is its convenient installation. Users do not need to cut cables or shut down the power supply during setup. This reduces downtime and improves safety, especially in existing power systems. Another advantage is electrical isolation, which separates high‑voltage primary circuits from low‑voltage secondary circuits. This design protects measuring instruments and workers from electric hazards. Split core CTs also offer stable accuracy and are available in different precision classes to support monitoring, metering, and protection applications. They are lightweight and compact, making them suitable for use in narrow spaces such as distribution boxes and control cabinets.

2026-03-19
304-1_1652_841.jpg
What Is A Donut Current Transformer?

A donut current transformer, also widely known as a toroidal current transformer (CT), is a specialized device engineered for precise alternating current (AC) measurement and circuit protection in electrical systems. Distinguished by its solid, ring-shaped core structure, the donut CT features no discrete primary winding. Instead, the conductor carrying the measured current passes directly through its central aperture, functioning as a single-turn primary. This unique design integrates the primary conductor into the device's core, eliminating the need for additional winding connections and streamlining installation in both new constructions and industrial setups.

2026-03-18

Exhibition Information

16C-07_1757_1200.png
What Is A Split Core Current Transformer (CT)?

A split core current transformer, also known as a clamp-on CT, is a special type of instrument current transformer designed for measuring alternating current without disconnecting the primary conductor. Unlike conventional solid-core CTs, whose iron core forms a closed, unbreakable ring, the magnetic core of a split core CT is cut into two separable halves. Users can open the core, wrap it around an existing cable or busbar, then lock the two core segments together to reconstruct a complete magnetic loop. This unique mechanical structure is its most defining feature.

2026-08-17
307-5_1343_800.jpg
What Is A Split Core CT?

One main feature of a split core CT​ is its convenient installation. Users do not need to cut cables or shut down the power supply during setup. This reduces downtime and improves safety, especially in existing power systems. Another advantage is electrical isolation, which separates high‑voltage primary circuits from low‑voltage secondary circuits. This design protects measuring instruments and workers from electric hazards. Split core CTs also offer stable accuracy and are available in different precision classes to support monitoring, metering, and protection applications. They are lightweight and compact, making them suitable for use in narrow spaces such as distribution boxes and control cabinets.

2026-03-19
304-1_1652_841.jpg
What Is A Donut Current Transformer?

A donut current transformer, also widely known as a toroidal current transformer (CT), is a specialized device engineered for precise alternating current (AC) measurement and circuit protection in electrical systems. Distinguished by its solid, ring-shaped core structure, the donut CT features no discrete primary winding. Instead, the conductor carrying the measured current passes directly through its central aperture, functioning as a single-turn primary. This unique design integrates the primary conductor into the device's core, eliminating the need for additional winding connections and streamlining installation in both new constructions and industrial setups.

2026-03-18

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