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Lightning Arrester & Their failures !

Updated: Sep 11

Surge arresters are devices that help prevent damage to apparatus due to high voltages. The arrester provides a low-impedance path to ground for the current from a lightning strike or transient voltage and then restores to a normal operating conditions.



Why Lightning Arrester Testing is Done?

If protection fails or is absent, lightning that strikes the electrical system introduces 1000's of kilo Volts that may damage the transmission lines, and can also cause severe damage to transformers and other electrical or electronic devices. Lightning-produced extreme voltage spikes in incoming power lines can also damage electrical home appliances that’s why it is damn crucial to check the integrity of Lightning Arrester..



WHICH PARAMETERS ARE CRUCIAL FOR LA HEALTH MONITORING ?


The deterioration of ZNO in a lightning arrestor can be reflected by careful observation of many parameters such as - :

  • 3rd Harmonic Resistive Current  

  • Total Resistive Current  

  • Total Leakage Current

  • V-I Angle

  • Watt Loss etc .



https://www.kpmtek.com/la-test-kit


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