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The department of Electronics and communication Engineering, of Ammini College of Engineering, organized a three day long industrial visit to BHEL Bangalore and Vivekanand Transformers, Bangalore, on 19th to 23rd September, 2014 for B.TECH(EEE) students. Visit was organized as per the CALICUT university guidelines and recommendations regarding the syllabus of B.TECH electrical and electronics engineering branch. Visit was organized with the prior permission and guidance of honorable principal Dr.P.R.Chandrasekhar, by the initiative of HOD Prof.K.Krishnakumar.
19th SEPTEMBER, Thursday
Journey to Bangalore
26 students accompanied by three faculty members started the journey from Kannampariyaram at 8:30 PM.
20th SEPTEMBER, Friday
At 10:00 AM we reached Bangalore and got freshened up at Hotel Geo. After breakfast we left for BHEL at 11.30 AM. We reached there by 12.45 PM. They first gave us an introduction about the branches and its services. We were given exposure to 3 different areas: slip house, manufacturing area and testing area.
BHARAT HEAVY ELECTRICALS LIMITED (BHEL), Bangalore:
BHEL are an integrated power plant equipment manufacturer and one of the largest engineering and manufacturing companies in India in terms of turnover. BHEL were established in 1964, ushering in the indigenous Heavy Electrical Equipment industry in India – a dream that has been more than realized with a well-recognized track record of performance. The company has been earning profits continuously since 1971-72 and paying dividends since 1976-77.
BHEL are engaged in the design, engineering, manufacture, construction, testing, commissioning and servicing of a wide range of products and services for the core sectors of the economy, viz. Power, Transmission, Industry, Transportation(Railway), Renewable Energy, Oil & Gas and Defence. They have 15 manufacturing divisions, two repair units, four regional offices, eight service centres and 15 regional centres and currently operate at more than 150 project sites across India and abroad. BHEL place strong emphasis on innovation and creative development of new technologies. Their research and development (R&D) efforts are aimed not only at improving the performance and efficiency of our existing products, but also at using state-of-the-art technologies and processes to develop new products. This enables them to have a strong customer orientation, to be sensitive to their needs and respond quickly to the changes in the market.
The high level of quality & reliability of their products is due to adherence to international standards by acquiring and adapting some of the best technologies from leading companies in the world including General Electric Company, Alstom SA, Siemens AG and Mitsubishi Heavy Industries Ltd., together with technologies developed in our own R&D centres.
Most of BHEL manufacturing units and other entities have been accredited to Quality Management Systems (ISO 9001:2008), Environmental Management Systems (ISO 14001:2004) and Occupational Health & Safety Management Systems (OHSAS 18001:2007).
They have been exporting our power and industry segment products and services for over 40 years. BHEL's global references are spread across 75 countries. The cumulative overseas installed capacity of BHEL manufactured power plant exceeds 9,000 MW across 21 countries including Malaysia, Omen, Iraq, the UAE, Bhutan, Egypt and New Zealand. Our physical exports range from turnkey projects to after sales services.
INSULATOR MANUFACTURING :-
An electrical insulator is a material whose internal electric charges do not flow freely, and therefore make it very hard to conduct an electric current under the influence of an electric field. A perfect insulator does not exist because a portion of the insulator become electrically conductive if the voltage applied across it exceeds the breakdown voltage. Over head conductors for high voltage electric power transmission are bare, and are insulated by the surrounding air. Insulators are also required where the wire enters the buildings or electrical devices such as transformers or circuit breakers, to insulate the wire from the case. These hollow insulators with a conductor inside them are called bushings. The common types of insulators are pin type insulators, suspension type insulators, strain insulators, shackle insulators and bushings. Standard disc insulators are 25 cm in diameter and 15 cm long, can support a load of 80-120 KN, have a dry flashover voltage of about 72 KV and are rated at an operating voltage of 10-12 KV. The number of disc insulator units depends upon the line voltages.
Insulators used for high voltage power transmission are made from glass, porcelain or composite polymer materials. Porcelain insulators are made from clay, quartz or alumina and feldspar and are covered with a smooth glaze to shed water. Insulators made from porcelain rich in alumina are used where high mechanical strength is a criterion.