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Current Transformer Standards

Current transformers (CTs) are essential instrument transformers widely used in power systems for current measurement, energy metering, and relay protection. A complete set of standards defines their design, manufacturing, testing, accuracy classes, safety requirements and operating limits to guarantee consistent performance and interoperability across different manufacturers and regions.

2026-10-08

Manufacturer of Abb Current Transformer

As a professional manufacturer of current transformers, we are delighted to introduce our capability to supply qualified current transformer products for ABB’s power distribution, renewable energy and industrial automation projects. With long-term experience in electromagnetic design, precision winding and epoxy encapsulation, we fully understand the stringent quality, accuracy and reliability requirements for every unit, and we are ready to deliver customised, standard-compliant solutions matching ABB’s technical specifications.

2026-09-30

Current Vs Voltage Transformer

Current transformers (CTs) and voltage transformers (VTs, also known as potential transformers, PTs) are instrument transformers widely used in power systems. They reduce high primary current or voltage to low, standard secondary values for measurement, protection and control. Although both isolate low-voltage instruments from high-voltage power circuits, they differ fundamentally in working principles, connection rules and load requirements.

2026-09-28

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Current Transformer Saturation

Current transformer (CT) saturation is a critical electromagnetic issue that impacts the accuracy and reliability of power system measurement, protection and monitoring. Under regular working conditions, the CT core operates in its linear magnetic region. Magnetic flux varies proportionally with the primary current, allowing the device to step down large primary AC current into a standard small secondary current for meters, transducers and protective relays.

2026-09-24

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

Current Transformer Standards

Manufacturer of Abb Current Transformer

Current Vs Voltage Transformer

Current Transformer Saturation

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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