Long Flashover Arresters 1 What I’ll be presenting… Introduction to lightning and lightning arresters What are Long Flashover Arresters? Why do we need them? How do they work? What are their types? 2 What is a lightning stroke? It is an electric discharge between ◦ Cloud and earth ◦ Cloud and cloud ◦ Charge centers of the same cloud 3 Lightning stroke waveform 4 Types of lightning strokes Direct Stroke Indirect Stroke 5 What does lightning
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stations upto the main transmission network ● System interconnection ● Transfer of power from main transmission from the main transmission network to secondary substations The increasing need of transmitting greater and greater amounts of power over long distances has led to a continuous increase in transmission voltages. As a rule, larger the amount of power to be transmitted, higher is the requirement of transmission voltages. In India, the transmission voltages in use are 33, 66, 110, 132, 220 &
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16 Upon curing they shrink more as compared to amorphous thermoplastics. Examples are polypropylene (PP), polyethylene (PE) [1]. S. Amin and M. Amin In order to resolve the problem of low thermal and chemical stability of thermoplastic elastomers, dynamic vulcanization techniques were used in late ] plastic. In dynamic vulcanization the thermoplastic and elastomers are both cross-linked and physically mixed together. This gave rise to a second generation of thermoplastic elastomers which had better
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MINISTRY OF POWER AND MINERAL RESOURCES OF THE REPUBLIC OF KAZAKHSTAN APPROVED by Prikaz No 189 of the Minister of Power and Mineral Resources of the Republic of Kazakhstan, as of August 26, 2004.) REGULATIONS ON ELECTRICAL INSTALLATIONS OF THE REPUBLIC OF KAZAKHSTAN (PUE) Astana, 2003 TABLE OF CONTENTS
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