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What is the functional difference of wave trap and lightning arrestor?
Wiki User
∙ 14y ago
OK, basically there are two types of arrester , namely Direct arrester (Lightning arrester) & indirect lightning arrester (surge arrester).
Direct arrester are copper rod of 5 to 6 feet long used to protect the structure, building, etc. It has pointed shape at the end to make current density at tip maximum and the bottom part is properly grounded.
Indirect lightning arrester are those used in parallel to the equipment to protect them from sharp increase of voltage. It has an gap which make a short circuit path for current to flow to ground when a high voltage is applied or induced across it. For an example, if the lightning falls on the transmission line away from transformer. the heavy current flow through the transmission line to the transformer. If a lightning arrester are not installed in parallel to the transformer, transformer may get burn.
Note here lightning is indirect for transformer.
Wiki User
∙ 12y ago
Wiki User
∙ 12y agolightning arrestor prevents overvoltage from reaching the equipment it is protecting on its load side, by shorting to ground,
a damping resistor is used to damp out the oscillation of the overvoltage to zero faster, in order words reduce the overvoltage oscillation
Wiki User
∙ 14y agoTheir purpose is completely different. A wavetrap is placed in series with a line, and is meant to block specific high frequencies (usually used in power line carrier communication schemes - a high frequency signal is injected onto the power line for communication purposes). An arrestor is placed line - to - ground, and its' purpose is to "hold down" the line voltage to safe values, (relatively) regardless of frequency, preventing flash over between conductors or to ground.
Wiki User
∙ 13y agoThis is two terms for the same device. Lightning appears as an electrical surge, just as switching surges do. Arresters are used to mitigate these surges, preventing excessive over voltages.
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