Lightning damage to electronic systems: Difference between revisions

 
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Bell ringing equipment damage usually comes in on the AC power line. Our current products rarely suffer lightning damage of this type, except for an occasional blown fuse. Other voltage spikes electromagnetically coupled into the speaker line typically go no farther than the amplifier and the speaker drivers themselves. Speaker wiring should be routed on the opposite corner of the tower from the lightning and structural ground conductors. Long parallel wire runs essentially become a large transformer that can couple damaging spike currents from one to the other.
Bell ringing equipment damage usually comes in on the AC power line. Our current products rarely suffer lightning damage of this type, except for an occasional blown fuse. Other voltage spikes electromagnetically coupled into the speaker line typically go no farther than the amplifier and the speaker drivers themselves. Speaker wiring should be routed on the opposite corner of the tower from the lightning and structural ground conductors. Long parallel wire runs essentially become a large transformer that can couple damaging spike currents from one to the other.


Bells hung on improperly grounded frames can receive high static charges that can dissipate through the electric ground wires. The purpose of electrical grounding conductors are to prevent shock hazards and they should never be carriers of high potential atmospheric charges. The spikes they carry to the electrical system can cause damage beyond the ringing equipment into sensitive (and expensive) IT, phones and other musical instruments.
Bells hung on improperly grounded frames can receive high static charges that can dissipate through the electric ground wires. The purpose of electrical grounding conductors are to prevent shock hazards and they should never be carriers of high potential atmospheric charges. The spikes they carry to the electrical system can cause damage beyond the ringing equipment into sensitive (and expensive) computers, AV equipment, phone systems and other musical instruments.


== Minimizing risk ==
== Minimizing risk ==


Chime Master can provide additional surge suppression components for both ends of the speaker line to minimize damage to drivers and amplifiers. These components require a suitable ground at both the speakers and the amplifier. They work best when the speakers are mounted to a structurally grounded frame.
Chime Master can provide additional surge suppression components for both ends of the speaker line to minimize damage to drivers and amplifiers. These components require a suitable ground at both the speakers and the amplifier. They work best when the speakers are mounted to a structurally grounded frame. Protection devices should be replaced every five years or immediately after a significant lightning event.


Metal framing within the tower structure needs to be bonded to an earth grounding rod, and the bell frame should be adequately bonded to the structural ground. Air terminals (lightning rods or strike termination devices) should also be used and bonded to the main conductor leading to the grounding rod.
Metal framing within the tower structure needs to be bonded to an earth grounding rod, and the bell frame should be adequately bonded to the structural ground. Air terminals (lightning rods or strike termination devices) should also be used and bonded to the main conductor leading to the grounding rod.