Browsing all articles from December, 2011
Dec
13

High Voltage Insulator

Introduction

The purpose of the insulator or insulation is to insulate the electrically charged part of any equipment or machine from another charged part or uncharged metal part. At lower utilization voltage the insulation also completely covers the live conductor and acts as a barrier and keeps the live conductors unreachable from human being or animals. In case of the high voltage overhead transmission and distribution the transmission towers or poles support the lines, and Insulators are used to insulate the live conductor from the transmission towers. The insulators used in transmission and distribution system are also required to carry large tensional or compressive load.
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Dec
13

About National Switchgears

Author admin    Category Switchgears     Tags

Founded in 1984, Ahmedabad Corporation National Switchgear was started with a primary focus of serving the electrical service shop industry with quality surplus Circuit Breakers, GOAB switch (operated air break switch), Drop Out Fuse and Operating Rod for Drop Out Fuse. Sharad Mehta, company co-founder and president, had a simple mission: operate with integrity and provide our customers with unparalleled responsive service and quality equipment.

Since conception, National Switchgear has moved from strength to strength, but we have never abandoned the focus of providing customers value through quality products and responsive service. Responding to customer needs, national switchgear created a new division focused on full-service electrical testing and onsite electrical maintenance services.

Today, National Switchgear deal’s in HT & L.T. Porcelain Insulators, Transmission line material and sub-station equipment, Overhead Line Material, Lightning Arrester, Fuse Elements, Galvanized Hardware, Stay set, Rubber Hand-Gloves, Rubber Sheet, A.C.S.R. Conductor and many more.

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Dec
12

What Is Switchgear and How Does It Work?

Switchgear refers to electrical equipment that regulates the flow of electricity within an electrical system. It is used by utility providers and private facilities alike for two reasons: to prevent overloads and short circuits, and to de-energize circuits for testing and maintenance. The most familiar types of switchgear are circuit breakers and fuses, which interrupt the flow of electricity to a circuit when its current becomes too high; and power transfer switches, which transfer a buildings source of electricity from a primary source to a secondary source, such as accessing generator power during a power outage.
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Dec
12

Composite insulators have

Composite insulators have

Early years of the insulator used for telegraph poles, with the development of technology, and slowly developed in the high-pressure wire to connect one end of the tower hung a lot of disk-shaped insulator, which is to increase the creepage distance, usually made ​​of glass or ceramic , called insulators. Insulator in the overhead transmission line plays two fundamental roles, namely, support wires and prevent current back to the ground, these two roles must be guaranteed, insulators should not be due to environmental conditions and electrical load changes caused by various electrical and mechanical stress and failure, otherwise the insulator does not have a significant effect, it will damage the whole line use and operational life.

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National Switchgears
403, Ashwamegh Avenue,
Near Mithakhali Six Road,
Navrangpura,
Ahmedabad - 380009
Gujarat - INDIA

Mobile: +91-9879539725
Tel / Fax +91-79-26461471

Email ID: info@national-switchgears.com
sharad.mehta61@gmail.com

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