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Pin, Suspension, Disc, Strain, Shackle and Stay are the type of ______________.
Transmission/distribution line INSULATOR
Transmission/distribution line TOWER
Transmission/distribution line CONDUCTOR
Transmission/distribution line BASE
Transmission/distribution line INSULATOR
These terms refer to various classifications of overhead transmission and distribution line insulators designed to provide electrical isolation between the high-voltage conductor and the supporting tower structure. They ensure the integrity of the power system by preventing leakage current to the ground.
These terms refer to various classifications of overhead transmission and distribution line insulators designed to provide electrical isolation between the high-voltage conductor and the supporting tower structure. They ensure the integrity of the power system by preventing leakage current to the ground.
VstringтАЛ=VphaseтАЛ├Ч╬╖├ЧN
RinsulatorтАЛ=A╧БlтАЛ
Insulators act as a high-resistance barrier made of porcelain, toughened glass, or polymer. They must possess high dielectric strength, mechanical toughness to withstand conductor tension, and adequate creepage distance to prevent surface flashover under varying weather conditions.
Pin insulators are used for distribution lines up to 33kV.
Suspension insulators consist of several discs in series to increase voltage capacity.
Strain insulators are utilized at line terminations, corners, or sharp curves to handle mechanical tension.
Shackle insulators are primarily used for low-voltage distribution or earth wires.
Prevents short circuits to ground
Maintains electrical safety of the tower structure
Provides mechanical support for heavy conductors
Prone to flashover under polluted environments
Porcelain insulators are heavy and brittle
Require periodic cleaning to avoid leakage currents
Overhead transmission lines (HV/EHV)
Distribution networks (LV/MV)
Substation busbar support
Pin and Shackle are typically for lower voltages, while Suspension and Strain are used for high voltage lines.
Option B (Tower) refers to the support structure, not the dielectric material.
A is correct тАФ Pin, Suspension, Disc, Strain, Shackle, and Stay are all specific categories of electrical insulators used in overhead power systems.
Always remember that for a suspension string of N insulators, the voltage distribution is non-uniform due to shunt capacitance; hence, the efficiency ╬╖ is always less than 100%.