Project Report For Current Transformer

Introduction

Project report for current transformer is as follows.

The sort of transformer used to measure AC current is known as a current transformer (CT). In proportion to the AC current in its primary, it generates an alternating current (AC) in its secondary. Instrument transformers include current transformers as well as voltage or potential transformers. Instrument transformers reduce enormous voltage or current values to manageable, standardized values for instruments and safe relays. The primary system’s high voltage is isolated from measurement or protection circuits by the instrument transformers.

Project-report-for-current-transformer

A current transformer delivers a secondary current that is precisely inversely proportional to the source current. The primary circuit is barely loaded by the current transformer. The power system’s current sensing components are current transformers. Electrical substations, producing stations, and the distribution of electric power in commercial and industrial settings all require current transformers.

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Raw Material of Current Transformer

The basic raw material ‘Cold Rolled Grain Oriented (CRGO) Steel’ is used for both Lamination and Wound Cores. It is imported from respected international mills in Japan, Korea, Russia, Germany, France, the United Kingdom, Brazil, and the United States in various permeability grades. CRGO Steel is available in a variety of grades, including M-3, M-4, M-5, and M-6, as well as HI-B. These raw materials are imported in the form of mother coils with widths of 750/1100 mm. CRGO material has the lowest maximum core loss value in the rolling direction.

The core loss at any given flux density increases as the shearing angle to the rolling direction increases, and it is often greatest in the transverse direction. As a result, CRGO can be used in static electrical equipment such as power transformers, distribution transformers, reactors, audio transformers, and current transformers.

CT cases are made of polycarbonate, which is flame retardant and non-drip and meets UL 94 V-0 standards. Polycarbonate is a very robust and lightweight engineering plastic material with mechanical qualities that are very close to those of metallic housing.

Market potential

The size of the current transformer market exceeded USD 1.5 billion in 2021, and it is anticipated to grow at a CAGR of more than 7% between 2022 and 2030. The electrification of rural areas is gaining attention, which is anticipated to fuel industry expansion.

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Market Trend

The Instrument Transformers business in India manufactures current transformers and voltage transformers with ratings ranging from 0.66 kV to 765 kV for both indoor and outdoor applications. The business also exports instrument transformers with indoor voltages up to 36 kV and outdoor voltages exceeding 12 kV. Over the previous two years, the industry has also demonstrated its strength by creating a 1200 kV CVT for a 1200 kV test station. Because the need for equipment has often fallen over the last year, the industry’s situation has not improved. Even in the 400 kV category, as well as the 220/120 and 66 kV sectors, the market size was shown to be dropping. 

The drop in the 765 kV segment was noticed, owing primarily to the transition from AIS to GIS. However, no serious threats were seen as a result of exports. Many surge arrester players have started manufacturing CTs in the new industrial scenario, and many players have entered the field with CTs up to 220 kV range. Customers were also found strengthening quality standards and implementing severe quality acceptance criteria for these products.