Some Information about Power Surges and How You Can Be Protected From It
You will face a real problem when your high tech and sensitive equipment would encounter power surges. Some instances like lightning and car crashing into a power pole could cause power surges. Lightning is considered the worst to deliver a surge leading to practically blowing up your equipment. There will be two events that will cause surges when a lightning deliver surges with a range of Amps to over 300,000.
When a lightning directly strikes a structure, there is a direct effect wherein its resulting energy would find its way to the ground through the structure.
During an indirect lightning strike, the effects are said to be more damaging since there is no direct visibility of its effect on the structure.
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It is said that many power surges are caused by people, with 60% of all surges and transients caused by industrial switching. Considered as the most spectacular is the lightning power surges which contribute to about 20% of power surges.
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A few of events created by man that would result to power surges are substation faults, internal plant failure extending to areas in the factory, and inductive loads whenever motors, generators and compressors are started. Also, if you are located at the end of the grid thereby exposing you to a large voltage variance, whether over or under voltage conditions and general interference.
Natural conditions leading to power surges would be like the weather related events such as earthquakes, tremors and others. Be informed also that there are power surges with no real cause of events.
Know that all surges and transients can link to your equipment through power lines, data/signal lines, telecommunication lines, and poor earthing.
In the past, the usual advice to avoid power surges on our equipment is to disconnect it from the power source whenever we hear the sound of a thunder. If you are at home, this advice still works in protecting your equipment from the 20% of the power surges. Fortunately, there are now effective solutions today that will give surge protection for all equipment without having to disconnect it from their power point, and these are surge diverters and surge filters.
Surge diverters, also known as shunt or parallel connected protector, is the basic form of protection that is designed to divert to the ground the large portion of energy from the incoming surge. The surge filters or also termed as series connected protector, is the method in which the incoming cable is cut and wired through the filter and thus having the filter reflect the load rating of the equipment. In order to protect sensitive electronics, it is recommended to use surge filters.