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How to calculate the the number of insulators used in a transmission line?
Wiki User
∙ 12y ago
The glass, 'dish', ('cap and pin') insulators used to support conductors from transmission towers are each rated to withstand a specific voltage. But this voltage depends upon the standards used by the electricity industry of the country in which you live but, typically, they are each designed for operating voltages within the range 10 - 12 kV. By dividing the effective line-to-earth value of the transmission voltage, by this value, you will be able to determine the the 'basic' number of dishes required.
This figure, however, will only be a guide, as the voltage gradient across the string of insulators is not linear. Furthermore, additional dishes are sometimes required according to the environmental conditions affecting the transmission line. For example, if the line is near the coast, the dishes might be subject to salt deposits; if the transmission line is near industrial factories (e.g. steel works) then the line might be subject to deposits from airborne waste from those factories, etc. So, often, the number of dishes will be greater than that number required to provide the basic insulation level.
Wiki User
∙ 12y ago
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What is a dampner on a transmission line?
Dampers are streamlined weights attached to transmission-line conductors, close to where the conductors are secured from insulators. As the name suggests, their purpose is to 'damp' any vibrations induced into the conductors by wind.
How do you compute energy loss in transmission line?
Energy loss is I^2*R losses. Calculate the transmission line resistance, and multiply by the current squared per unit time (seconds if in watt/seconds, for example).
How do you choose no of insulator in High Voltage transmission Line?
Each insulator is rated according to its ability to insulate. For example, if one insulator is good for x volts, then four insulators will be required for a line conductor operating at 4x volts with respect to earth (ground). However, additional insulators might also be inserted to compensate for local conditions -e.g. salt deposit (near the sea), industrial pollution (near factories), etc.
What is the purpose of insulator in overhead transmission line?
Overhead lines are uninsulated, as they depend upon the air to provide insulation. However, they must still be insulated from the towers or poles from which they are suspended. This insulation is provided using glass or ceramic insulators. The greater the line voltage, the longer the ceramic insulator, or the greater the number of glass insulator 'dishes'.
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What is a dampner on a transmission line?
Dampers are streamlined weights attached to transmission-line conductors, close to where the conductors are secured from insulators. As the name suggests, their purpose is to 'damp' any vibrations induced into the conductors by wind.
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Line loss, or heating of the wires. The insulators prevent the loss of energy.
How do you compute energy loss in transmission line?
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Insulators.
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How do you choose no of insulator in High Voltage transmission Line?
Each insulator is rated according to its ability to insulate. For example, if one insulator is good for x volts, then four insulators will be required for a line conductor operating at 4x volts with respect to earth (ground). However, additional insulators might also be inserted to compensate for local conditions -e.g. salt deposit (near the sea), industrial pollution (near factories), etc.
Name an electrical application that requires insulators?
Primary line power distribution system.
