11 Myths of Surge Protection

轻扬和大风

和浪涌保护相关的11个迷思，转自OBO官方防雷论坛

Myth #1. ANY SURGE PROTECTION IS BETTER THAN NO SURGE PROTECTION.

This is perhaps the most reasonable, yet the most misleading of all. With no surge protection at all, incoming surges will hit only the computer's power supply (which is considerably more surge tolerant than the data line circuitry), and will not affect the system ground level at all. Since shunt surge suppressors divert power line surges into data lines, using the wrong type of surge suppression can actually cause failures throughout the network. Thus the network is likely to be better off if individual nodes have no surge supp- ressor than if they have ones that shunt power-line surges into data-lines.

Myth #1. ANY SURGE PROTECTION IS BETTER THAN NO SURGE PROTECTION.
Myth #2. A UPS WILL PROVIDE DEPENDABLE SURGE PROTECTION.
Myth #3. TRANSFORMERS ARE THE BEST SURGE PROTECTORS.
Myth #4. VOLTAGE-REGULATING TRANSFORMERS ARE HELPFUL WITH COMPUTERS.
Myth #5. COMMON-MODE SURGES CAUSE COMPUTER PROBLEMS.
Myth #6. COMPUTER MODEM DAMAGE IS CAUSED BY SURGES ON THE PHONE LINE.
Myth #7. SIGNAL GROUND IS ISOLATED FROM CHASSIS GROUND.
Myth #8. THE ONLY RISK FROM THE POWER LINE IS HARDWARE DAMAGE.
Myth #9. SURGE PROTECTORS ARE PERMANENT DEVICES.
Myth #10. NOTHING CAN STOP LIGHTNING.
Myth #11. YOU GET WHAT YOU PAY FOR.

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关于浪涌保护的11种错误思维


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