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• An Insulator is a material that resists the flow of electric current. It is an object intended to support or separate electrical conductors without passing current through itself.
• High-voltage insulators used for high-voltage power transmission are made from glass, porcelain, or composite polymer materials.
• Porcelain insulators possesses all the major characteristics of technical ceramics, e.g. insulating capabilities, dimensional stability, hardness, thermal resistance and resistance to corrosion.
• A pin insulator consists of a nonconducting material such as porcelain, glass, plastic, polymer, or wood that is formed into a shape that will isolate a wire from a physical support (or "pin") on a telegragh, utility pole or other structure, provide a means to hold the insulator to the pin, and provide a means to secure the conductor to the insulator.
• Porcelain insulators are made from clay, quartz or alumina and feldspar, and are covered with a smooth glaze to shed dirt.
• The design of insulators often includes deep grooves, or sheds, that provides increased arc-lengths. Insulators made from porcelain rich in alumina are used where high mechanical strength is a criterion.
• Several companies had started making insulators from "dry press" porcelain, so-called because the almost dry porcelain in granular form was pressed (dry) into 2 or 3 piece steel molds. These insulators tended to be porous and they were practical only for lower voltages and in drier conditions.
• Some typical examples of dry process insulators include U-701, U-744, U-928B, and U-935A, as well as a multitude of smaller signal styles made for low voltage use.
• In Glaze welding process an insulator was produced in 2 or 3 "shells", or pieces. These pieces were glazed and then stuck together and fired. The glaze would "weld" the pieces together, producing one insulator.
• Porcelain insulators are widely used in electrical applications such as power transmission and distribution. Primarily, the function of these insulators is to insulate the distribution lines carrying electricity.
• Further, in applications of railway traction lines, they are also subjected to adverse environmental conditions and mechanical vibrations.
• S&C uses high-quality porcelain insulators. Each insulator meet the minimum physical characteristics specified by S&C for tensile strength, compressive strength, density, puncture resistance, porosity, and thermal-shock resistance.

• Insulator (electrical)
• Pin insulator
• Porcelain Insulator Colors
• History on Australian Insulators
• Polymer vs Porcelain Suspension Insulator Equivalence - What To Use?
• The Evolution of Porcelain Insulators
• Significance of structure–property relationship in alumina based porcelain insulators to achieve quality

Process

• A Brief History of Porcelain Insulators
• Transformer Bushings with Porcelain Insulator
• Polymer Compounds Used In High Voltage Insulators
• Porcelain Processing Way
• A study of 154kV Porcelain Insulator by Contained Alumina
• Alterations to Porcelain Insulators

Company Profiles

• Company in China
• Another Company in china
• Company in New Delhi
• Company in West Bengal
• Another Company in New Delhi
• Company in North America
• Company in Austria
• Company in Russia
• Company in SIP Suzhou
• Company in China
• Company in Uttar Pradesh

Project and Consultants

• High Voltage Bushing Design
• Development of Simple Diagnostic tool for detecting Insulators with contamination Problems
• The Dust cycle Method: A New pollution test method for ceramic and non-ceramic insulators
• Seismic Qualification and Fragility Testing of 500 kV Disconnect Switches
• Insulators for cold urban areas: The problem of Road Salt
• Experts in Minnesota

Technology

• Composite Insulation for Reliability Centered Design of compact HVAC & HVDC
• Design Aspects of UHVDC Equipment
• Microwave Drying and the green properties of high-voltage porcelain Insulators
• Silicone Rubber for Electrical Insulators

Primary Information Services
 21 Murugappan St, SwamyNagar Ext2, 
Ullagaram, Chennai - 600091, India.
 Phone: 91 44 22421080  Email : informer@eth.net
Mobile numbers:9940043898, 9444008898  Fax : 91 44 22423753