北方郎 发表于 2013-12-26 11:19:05

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

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.

北方郎 发表于 2013-12-26 11:25:45

本帖最后由 北方郎 于 2013-12-26 11:49 编辑

GBT 21714.1-2008 雷电防护 第1部分：总则

北方郎 发表于 2013-12-26 11:34:42

Annex B Time functions of the lightning current for analysis purposes

北方郎 发表于 2013-12-26 11:39:43

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

北方郎 发表于 2013-12-26 11:45:51

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 发表于 2014-1-26 21:11:12

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

秋石 发表于 2014-1-26 21:12:17

GBT 21714.1~4已在修订了，采用的是IEC62305.1~4-2010了。
页: [1]
查看完整版本: IEC_62305-1-2010 Protection against lightning - Part 1: General Principles 变化