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Ct Current Transformer

A CT Current Transformer is a vital electrical device designed to transform high alternating currents (AC) into standardized low currents (typically 5A or 1A) for measurement, protection, and control purposes in power systems. It is an essential component in power generation, transmission, and distribution networks, ensuring safe and accurate monitoring of electrical currents that would otherwise be too large to measure directly.

2026-04-21

3 Phase Current Transformer

A 3-phase current transformer (CT) is a specialized instrument transformer designed to measure alternating current in three-phase electrical systems. It functions by stepping down high primary currents to standardized, low secondary currents—typically 5A or 1A—making them safe and practical for measurement, protection, and control equipment. Widely used in power grids, industrial plants, substations, and commercial buildings, 3-phase CTs ensure accurate current monitoring while isolating high-voltage circuits from low-voltage measuring devices, protecting both personnel and instruments.

2026-04-20

Current Transformer Measurement: Principle, Applications And Key Considerations

A current transformer (CT) is a vital electrical device designed to measure alternating current (AC) in high-voltage and high-current power systems. It plays an indispensable role in power measurement, protection, and control, converting large primary currents into standardized secondary currents (typically 5A or 1A) that are safe and suitable for measurement instruments, relays, and other monitoring equipment. Unlike direct current measurement, CT measurement relies on electromagnetic induction to achieve isolation and scaling, ensuring both accuracy and operator safety.

2026-04-17

Current Transformer Sizing

Current transformer sizing is a critical step in electrical system design, as it ensures accurate current measurement, protection, and control. A current transformer (CT) converts high primary currents into standardized low secondary currents, typically 5A or 1A, which are compatible with measuring instruments, relays, and other protective devices. Improper sizing can lead to inaccurate readings, equipment damage, or failure of protective systems, making it essential to follow systematic guidelines.

2026-04-16

Company News

Italian Clients Visit Tianrui Group's Nanjing Branch In-Depth Exchanges And Production Line Tour Pave The Way for New Cooperation

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

2025-09-17

Tianrui Electronic Nanjing Branch Organizes Spring Team-Building Activities

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

2025-04-29

The residual current transformer of our company passed the third party inspection center test successfully

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

2020-08-19

Exhibition Information

Tianrui Electronic Co., Ltd. Was Invited To Participate in 2024 ELECTRIC & POWER VIETNAM

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.

2024-09-14

Tianrui Electronic Successfully Participated 2024 CWIEME

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

2024-06-04

Tianrui Electronics successfully concluded at CIRED2023 exhibition

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

2024-03-20

Ct Current Transformer

3 Phase Current Transformer

Current Transformer Measurement: Principle, Applications And Key Considerations

Current Transformer Sizing

Italian Clients Visit Tianrui Group's Nanjing Branch In-Depth Exchanges And Production Line Tour Pave The Way for New Cooperation

Tianrui Electronic Nanjing Branch Organizes Spring Team-Building Activities

The residual current transformer of our company passed the third party inspection center test successfully

Tianrui Electronic Co., Ltd. Was Invited To Participate in 2024 ELECTRIC & POWER VIETNAM

Tianrui Electronic Successfully Participated 2024 CWIEME

Tianrui Electronics successfully concluded at CIRED2023 exhibition

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