Lightning Protection for Surveillance Cameras

Author: Ethan Ace, Published on Aug 27, 2012

Lightning strikes can cause significant damage and major expenses for surveillance systems. An unprotected camera hit by lightning cannot only kill the camera but lots of other devices connected to the camera (switches, recorders, etc.). In this note, we examine lightning protectors, their cost, usability, when they are needed, types to consider and how they should be installed.

Where Is It Needed?

**** ********, *********** ******* ********* ********** ** ******* ******* **** the **** ** *********, ** *****, ************, ** ***** ****** exposed *********. **** ******* ** * ******* ***** **** * building, * ****** *********** ******* * ********* ***. ******* ******* lower ** * *****-***** ********, **** *** *** ********** ** be ** ******* ** ****** *******, *** *** ***** ** subject ** *********-******* ********* ********.

**** ********* ****** **** ********* ********** ****** ** ********* ** all ******* *******, ********** ** ******** ********. *******, ***** *** cost ** **********, $**-*** *** ******, ***** *** ** * ~10% ******** *** ***** ******, **** ** ***** *** **** in ********.

******** ********* ********* **** *** **** **** * **** ******** decision. ********** ***** ********* ******* ********, ********* **** ** **** area *** *** **** ***** ** **** (*** ********* ********* ********* ***). ***** ** * ******** ** *** ******* ********* ****** frequencies:

****** *** ******* ** ~** **** ****** ** ****** ********* strikes **** *** *** *** **** ********* ******* *** ** most ** **********. ******* **** **** *** **** ****** ***** risks. ***, ** ******, ********** ** * ****** **** **** cameras **** ******* ** **** **** ******** ***** ** *** risk ** ********* *******.

**** **** ******** ** ******* ******, ********* ********** ** *** intended ** ******* *** ****** ** ***** ********* ****** **** being ********* ** *********. ** ********* ******* * ******, **** camera ** ****** ****** ***** ** ** *********. *******, *** protector ** ******** ** ******* ********* *********** (********, *******, ****, etc.) ** *** ********* **** **** ***** *******.

Types ** ********* **********

********* ********** *** **** ** ****** *** *****-**** **************:

  • ******-****:********** ** **** **** *** **** *** * ****** ******, typically ******* **** *** ******. ******-**** ********** *** **** **** only * ***** ****** ** ******* ******* *** *********. ******* are ********* *** ****** ***** **** ****, ** ******* ***** PoE, ** ** **** ********* *** ** ******** ** **/*** power *****. ******-**** ********** ********* **** *** $**-*** *** ******. This ***** ***** * ******* ******-**** *********:-
  • *****-****:*****-**** ***** ********** *** ********* ******* ** ******** **-** *******, resembling ***** ****** **** ******** **** *****. **** *** **** often ****-******* **** ******* ** ********* *********. *****-**** ********** *** used **** ****** ****** ** ******* ******* *** *********. **** mount ********** **** *** $*** *** **, ********* ** **** count *** *************. **** ***** *********** * ******* ****-***** *********:-

************

*** ****** **** ********* ****** ********* ********* ********** ** *********. Without * **** ******, *** ********* *** ** **** ** divert ******* ******* **, ********* ** *********** *********. *** ***** protector ****** ** ******** ** *** ** *** ********* ****** with * ******* #* *** ****** ****:

  • ******** ********** *****
  • ********** ******* ******
  • ******** **** ***** ****
  • ***** ********** ****** ****

**** * *********** **********, ** ** ******** ********** ** ******* lightning ********** ****** ** *** ******, ****** *** **** ** ground **** ******* **** *** ********* **** ** *** ***** run. ** *** ***** *** ** *** *****, ** *** provide **** ********** **** *********, ******** *** ************* ** *** lightning *********.

**** **** **** ** ***** **** ********** ******-**** ***** **********, as ********** ***** ********* ******** ******* *********** ** ********, ** surge ********** **** ** ********* ** * ******** *********. ******** protection **** *** ****** **** ******** **** ************ *****, ** a ********* ***** **** ** ***** *** **** ******, ***** may ** *** *** ** ******* *********.

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