IEC_62305-1-2010 Protection against lightning - Part 1: General Principles 变化

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This second edition cancels and replaces the first edition, published in 2006, and constitutes a
technical revision.
This edition includes the following significant technical changes with respect to the previous
edition:
1) It no longer covers protection of services connected to structures.
2) Isolated interfaces are introduced as protection measures to reduce failure of electric and
electronic systems.
3) First negative impulse current is introduced as a new lightning parameter for calculation
purposes.
4) Expected surge overcurrents due to lightning flashes have been more accurately specified
for low voltage power systems and for telecommunication systems.

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GBT 21714.1-2008 雷电防护 第1部分：总则

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Annex B Time functions of the lightning current for analysis purposes

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Expected surge overcurrents due to lightning flashes on low-voltage systems and for telecommunication systems.

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7.4 Protection measures to reduce failure of electrical and electronic systems
Possible protection measures (LPM) include
• earthing and bonding measures,
• magnetic shielding,
• line routing,
• Isolating interfaces,
• coordinated SPD system.
These measures may be used alone or in combination.

秋石

GBT 21714.1-2008 采用的是IEC62305.1-2006吧？

秋石

GBT 21714.1~4已在修订了，采用的是IEC62305.1~4-2010了。