The rules to be complied with for the transitions between the individual lightning protection
zones are presented here.
Note
This section can only provide you with the general guide on protecting the ET 200iSP from
overvoltage.
Complete protection from overvoltage is only guaranteed when the entire system design is
based on the lightning protection zone concept. Comprehensive consideration must be given
to this when planning construction of facilities.
We therefore recommend that you contact your Siemens representative or a company
specialized in lightning and overvoltage protection if you require more detailed information
about overvoltage.
In the following we refer to the overvoltage protection device using the normative terminology,
i.e., according to the degree of hazard expected, overvoltage suppressor for pulse shape 8/20
μs and lightning current suppressor for pulse shape 10/350 μs.
Further references
The following information is based on the lightning protection zone concept described in IEC
IEC 62305-4 - "Protection against LEMP".
A.5.2
Lightning protection zone concept
Principle of the lightning protection zone concept according to IEC 62305-4, DIN EN 62305-4, VDE
0185-4
The principle behind the lightning protection zone concept is the division of the volume to be
protected from overvoltages (e.g. a control room) into lightning protection zones based on
EMC considerations (see figure below).
The various lightning protection zones (LPZ) are delimited spatially as follows and not
necessarily by physical boundaries, such as walls, floors, etc.
Table A-10
Lightning protection zones
Lightning protection zones (LPZ) Lightning Protection Zone)
Outside areas of a building with risk of a direct strike
Lightning protection zone 0
A
Outside areas of a building that are not at risk of a direct strike
Lightning protection zone (LPZ) 0
B
Inside areas of a building that follow lightning protection zone 0
B
Lightning protection zone 1
Inside areas of a building that normally represent separate EMC-
reducing rooms and are in lightning protection zone 1
Lightning protection zone 2
Electrical equipment (with shielding properties) in lightning protec‐
tion zone 2
Lightning protection zone (LPZ) 3
Appendix
A.5 Lightning and overvoltage protection
ET 200iSP
356
Operating Instructions, 11/2017, A5E00247483-07
Содержание SIMATIC ET 200iSP
Страница 82: ...Configuration options 3 18 Redundancy with IM 152 ET 200iSP 82 Operating Instructions 11 2017 A5E00247483 07 ...
Страница 184: ...Commissioning and Diagnostics 6 8 Diagnostics with STEP 7 ET 200iSP 184 Operating Instructions 11 2017 A5E00247483 07 ...
Страница 194: ...Maintenance 7 7 Reading service data ET 200iSP 194 Operating Instructions 11 2017 A5E00247483 07 ...
Страница 220: ...Terminal modules 9 6 Terminal module TM RM RM ET 200iSP 220 Operating Instructions 11 2017 A5E00247483 07 ...
Страница 372: ...Glossary ET 200iSP 372 Operating Instructions 11 2017 A5E00247483 07 ...
Страница 384: ...Index ET 200iSP 384 Operating Instructions 11 2017 A5E00247483 07 ...