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An AC current transducer is a device used to measure alternating current and convert it into a proportional, standardized output signal that can be easily monitored, recorded, or processed by control systems. In electrical systems, alternating current constantly changes direction and magnitude, which makes direct measurement and integration with automation equipment more complex. The AC current transducer solves this challenge by sensing the current flowing through a conductor and producing an isolated output signal such as 4 to 20 mA, 0 to 5 V, or 0 to 10 V. This output can then be safely transmitted to programmable logic controllers, digital panel meters, data acquisition systems, or energy management platforms.
In modern electrical systems, ensuring safety against ground faults is paramount, and the zero sequence current transformer (ZCT) stands as a critical component in this defense. Also known as zero sequence CT, z current transformer, ground fault CT, or ground fault current transformer, this specialized device is designed to detect unbalanced currents that signal dangerous ground faults, protecting personnel, equipment, and infrastructure from catastrophic damage. A zero sequence current transformer operates on the principle of vector current summation, a foundational concept for ground fault detection. In a balanced three-phase electrical system, the sum of the currents in all three phases equals zero, meaning no net current flows through the ground. However, when a ground fault occurs—such as insulation failure, accidental contact with the earth, or equipment malfunction—the system balance is disrupted, creating a zero sequence current that flows through the ground path.
Current Transformer (CT) and current transducer are both essential devices for electrical current measurement and signal processing in power systems, industrial automation, and electrical engineering applications, yet they differ fundamentally in working principle, design purpose, output characteristics, and practical use cases. While CTs are specialized for high-voltage/high-current power system metering and protection, current transducers are versatile signal conversion tools for industrial control and automation, with overlapping but distinct functional scopes that make them irreplaceable in their respective scenarios. A clear understanding of their differences is critical for accurate device selection, safe system operation, and reliable data acquisition in electrical projects.
Power equipment monitoring is vital in maintaining the reliability, safety, and efficiency of electrical systems. As industries move towards more complex, automated, and interconnected power grids, the role of accurate and real-time monitoring becomes increasingly important. One key component in thi
On September 17, 2025, Tianrui Group’s Nanjing Branch welcomed distinguished guests from Italy. The clients made a special trip to Nanjing with the aim of gaining a comprehensive understanding of Tianrui Group’s technological capabilities, product portfolio, and manufacturing strength
Nanjing, April 29, 2025 - To deepen team collaboration awareness, facilitate cross-departmental communication, relieve work pressure, stimulate team vitality, and enhance mutual understanding, Hubei Tianrui Electronics Co., Ltd.'s Nanjing Branch organized an outdoor team-building event for all emplo
The residual current transformer developed by our company was commissioned by the National Fire Electronic Product Quality Supervision and Inspection Center for third-party inspection in May 2017
On September 3-6, 2024, Tianrui Electronics Co., Ltd. participated in 2024 ELECTRIC & POWER in Ho Chi Minh City, Vietnam, which was attended by more than 200 enterprises from all over the world.
From May 14 to 16, 2024, Tianrui Electronics participated in 2024CWIEME "German Coil, insulation material, motor and transformer Manufacturing Exhibition" held in Berlin International Convention and Exhibition Center, there are totally over 600 enterprises from Germany, UK, India and other co
On June 12, 2023, Tianrui Electronics participated in the CIRED2023 International Power Supply Conference and Exhibition and Power Grid Innovation and Sustainable Development Summit Forum in Rome, Italy. This conference will promote the high-quality development of future power distribution technolog
