Frequently Asked Questions All About Surge Protection
 
What is Surge?
Surge is defined as a significant increase in voltage above the designated level in a flow of electricity which lasts for 3nano seconds. It is a sudden or quick increase in voltage. According to IEEE amendments, a transient surge event is an extremely large overvoltage more than 1.8 times the normal voltage which lasts for 3nano seconds. faq According to a study the most frequent reason of damaging an electrical & electronics devices is SURGES.faq

Reasons of Surge Generation
The sources of surge generation are:

Direct effect of lightning
  • Signal Surges Generation
  • Cloud to cloud strikes radiate extremely powerful electromagnetic pulses

Indirect effect of lightning
  • Ground Potential Rise
  • Electromagnetic coupling on overhead lines
Switching Effect
  • Switching phenomena caused by switching electric power sources on or off.
  • Starting motors or transformers.
  • Neon and sodium light starters.
  • Switching power networks.
  • Operation of fuses and circuit-breakers.
  • Falling power lines.
  • Lifts, AC units, refrigerator, welding machine etc.
  • Faulty wiring, utility power supply failure and electrical noise.
Electrostatic Discharge (ESD) Phenomenon
Nuclear Electromagnetic Pulses

DIRECT LIGHTNING
DISTANCE LIGHTNING
ON-OFF SWITCHING
GROUND POTENTIAL RISE
CLOUD TO CLOUD STRIKES
SIGNAL SURGE GENERATION

Damages due to Surges
  • Harmful transient surges can burnout sensitive circuits & panel
  • Damaging power surges caused equipment failure
  • Failure of programming card
  • Heavy surges can burnout your expensive system
  • It takes seconds for a power surge to completely destroy an entire electrical unit of any kind
  • Voltage breakdown of semiconductor junctions
  • Destruction of bonding of components, tracks of PCBs or contacts, triacs/thyristors by dV/dt
  • Random operation of latches, thyristors, and triacs
  • Erasure of memory
  • Program errors or crashes
  • Data and transmission errors
  • Components exposed to surges have a shorter life
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