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 |
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Thunder days per year |
|
Argentina |
30 - 80 |
|
Brazil |
40 - 200 |
|
Hongkong |
9 - 100 |
|
Indonesia |
180 - 260 |
|
Malaysia |
180 - 260 |
|
Singapore |
160 - 220 |
|
Thailand |
90 - 200 |
|
|
|
- IEC LP / SP Standards
TC81 Lightning Protection
In the past, there were isolated lightning protection standards dealing with:
IEC 61024 series: Protection of structures and their contents against physical damage and life hazard due to direct flashes.
IEC 61312 series: Protection against lightning electromagnetic impulse (Technical Report, not standard)
IEC 61663 series: Lightning protection of telecommunication lines.
- IEC LP / SP Standards IEC TC81 Lightning Protection
These have been forged into a new compendium known as:
IEC 62305 Series: Lightning Protection
IEC 62305-1: Part 1: General Principles – WG11
IEC 62305-2: Part 2: Risk Management – WG9
Which are both valid for any of the following standards:
IEC 62305-3: Part 3: Physical damage to structures and life hazard – WG8
IEC 62305-4: Part 4: Elect. & Electronic systems within structures – WG3
IEC 62305-5: Part 5: Services – WG10
- IEC LP / SP Standards IEC SC37A Surge Protection
IEC 61643 Series: Surge Protective Devices
IEC 61643-1 : Surge Protective Devices connected to low-voltage power distribution systems: Performance requirements and testing methods – WG5
IEC 61643-12 : Surge Protective Devices connected to low-voltage power distribution systems: Selection and application principles – WG3
IEC 61643-21 : Surge protective devices connected to telecommunications and signaling networks – Performance requirements and testing methods – WG4
IEC 61643-22 : Surge protective devices connected to telecommunications and signaling networks – Selection and application principles – WG4
Note: Efforts are being taken to ensure that IEC 62305-4 defers to IEC61643-12.
- Standards and their approach to Surge Ratings
IEC 61312 pushed 10/350 waveshape
200kA at LP Class Level I
150kA at LP Class Level II
100kA at LP Class Level III-IV
IEC 61643 pushes more the 8/20 waveshape
Allows for 10/350 for Arresters, test class I
Does not name 10/350 by has Qs (peak value and charge transfer) table
IEEE C62 Trilogy (C62.41.1, C62.41.2, C62.45)
Scenario I - up to 10kA 8/20
Scenario II - up to 100kA 8/20 or 10kA 10/350
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