new core-through current transformer of china_Zhengzhou KBT Transformer Instrument Co., Ltd.-Power transformer manufacturer

WhatsApp: +86-13613857007

Email:sales@kbtelec.com

language

May 07,2026

Public Notice of Projects Nominated for the 2025 Henan Provincial Science and Technology Awards

Learn more

Oct 15,2025

Participating in the Vietnam Exhibition in 2024

Learn more

Jul 28,2022

Inner Mongolia completes full-area transmission of 35 kV voltage transformer metrology comparison

The 2025 35 kV voltage transformer metrology comparison project, led by the Standard Instrument Transformer Laboratory of the Electric Energy Measurement Supervision Center of the Inner Mongolia Electric Power Research Institute, completed full-region on-site transmission and testing over a two-month period. The comparison, covering 11 power supply units under the Inner Mongolia Electric Power Group, employed a "petal-shaped" dual-route transmission scheme. The goal was to establish a unified measurement value transmission system across the region and provide technical support for fair settlement of electricity trade. Final data processing and report generation will be completed in September.

Learn more

What is the working principle of current transformer?

Current transformers are important devices used for measurement and protection in power systems. Their working principle is based on the law of electromagnetic induction. The core is to achieve the conversion of large current on the primary side to small current on the secondary side through electromagnetic coupling, which facilitates measurement, protection and monitoring.

2022/01

How to choose a suitable current transformer?

Selecting a suitable current transformer requires comprehensive consideration of multiple factors such as power system parameters, application scenarios, and accuracy requirements to ensure its safe and reliable operation and meet functional requirements such as measurement and protection.

2021/11

What are the accuracy levels of current transformers?

The accuracy grade of a current transformer is a key indicator of the accuracy of its measurement or protection performance. Different grades correspond to different tolerances, and the selection should be based on the specific application (metering, measurement, protection). The following is a classification of common accuracy grades and detailed descriptions:

2021/11

Is there a big price difference between current transformers of different accuracy levels?

Current transformers of different accuracy grades vary in price. Generally speaking, higher accuracy grades increase prices, but the extent of this difference varies depending on factors such as product specifications and type.

2021/11

Advantages of power transformers

Power instrument transformers (including current transformers and voltage transformers) are essential, critical equipment in power systems. Their core function is to safely convert high voltages and high currents to the low voltages and low currents required by measurement and protection equipment. They offer several significant advantages

2021/11

Transportation

Support air, land and sea transportation

Customization

Offering options for customers to customize

Enjoy A Discount

Customers can negotiate the purchase price

Zhengzhou KBT Transformer Instrument Co., Ltd.

Phone/WhatsApp:

+86-13613857007

Email:

sales@kbtelec.com

About Us

Zhengzhou KBT Transformer Co., Ltd. is a specialized production enterprise mainly based on power transformers, which integrates product development, production, sales, service and technology consulting.

language