A Guide to BS EN 62305:2006 Protection Against Lightning Part 7 doc
A Guide to BS EN 62305:2006 Protection Against Lightning Part 7 doc
... 5 .7
shows a large loop area created between power and
data communication cabling.
Figure 5 .7: Loop areas
Good practice
Bad practice
Area of loop susceptible
to induced voltage
Power line
Data ... electrode
Bonding
terminals
LPZ 0
B
LPZ 0
A
Management of an LPMS
As detailed in BS EN 62305-3, there is a requirement
to routinely maintain and inspect a structural LPS to
ensu...
A Guide to BS EN 62305:2006 Protection Against Lightning Part 9 docx
... physical damage
applicable to various classifications of service provider
(eg gas, water, financial, health etc).
Loss L
o2
relates to losses due to failure of internal
systems applicable to various ... 1 hour per day and 5
days per week.
Therefore:
In the absence of any information relating to the time
that occupants are in a hazardous place with respect
to step and touch poten...
A Guide to BS EN 62305:2006 Protection Against Lightning Part 1 potx
... the standard.
Part 2: Risk management
BS EN 62305-2 (part 2) risk management
approach, does not concentrate so much on
the purely physical damage to a structure
caused by a lightning discharge, ... European Union (EU), particularly
relating to standardisation. Consequently, any British
Standard now published has to be in common
agreement with its European equivalent.
The UK...
A Guide to BS EN 62305:2006 Protection Against Lightning Part 2 pdf
... later in this guide.
One of the first changes to realise is that this new
approach to risk management looks at risk in a far
broader sense than merely the physical damage that
can be caused to ... National Annexes NB, NC, and NH
in preference to Annex B, C and H. Additionally
Annex NK relates to the inclusion of other national
parameters and information. These National Annex
t...
A Guide to BS EN 62305:2006 Protection Against Lightning Part 3 pptx
...
BS 6651 has a flash density map and a world
thunderstorm day's map along with an accompanying
table. These have been transferred to BS EN 62305-2,
and also illustrated in this guide. See ... increasing importance given to the protection
against LEMP (Lightning Electromagnetic Impulse),
which can cause immeasurable and irreparable
damage (as well as disastrous conseque...
A Guide to BS EN 62305:2006 Protection Against Lightning Part 4 pps
... termination
network
Connection to
air termination
network
Reference
plane
Catenary conductors
(air termination)
BS EN 62305-3 Physical damage to
structures and life hazard
h Physical height of catenary conductors above ... 10m apart and if strike plates are used as an
alternative, these should be strategically placed over
the roof area not more than 5m apart.
As modern research on...
A Guide to BS EN 62305:2006 Protection Against Lightning Part 5 pps
... that in the event of lightning
currents flowing, no metallic part is at a different
voltage potential with respect to another. If the
metallic parts are essentially at the same potential
then ... basement/ground level and then every 20m
thereafter. A sufficient electrical insulation or
‘separation’ distance should always be maintained
between the appropriate metallic installations/p...
A Guide to BS EN 62305:2006 Protection Against Lightning Part 6 pps
... main incoming power lines are generally
substantial enough to carry partial lightning currents,
telecommunication lines have significantly smaller
cross-sectional areas.
Taking this factor into ... currents) as well as radiated electromagnetic
field effects.
BS EN 62305-4 is an integral part of the complete
standard. By integral we mean that following a risk
assessment as detailed...
A Guide to BS EN 62305:2006 Protection Against Lightning Part 8 ppt
... documentation.
The documentation should be continuously updated,
particularly to take account of alterations to the
structure that may require an extension of the LPMS.
Summary
Damage, degradation ... electrical contractor may add a power
supply line to external CCTV cameras or car park
lightning. As this line is likely to cross an LPZ, suitable
protection measures (eg SPD) shou...
A Guide to BS EN 62305:2006 Protection Against Lightning Part 10 ppsx
... materials are considered.
Suburban environment
Area with a medium density of buildings.
”Town outskirts” is an example of a suburban
environment.
Surge
Transient wave appearing as overvoltage ... current attains 10% of its peak
value.
Voltage switching type SPD
SPD that has a high impedance when no surge is
present, but can have a sudden change in impedance
to a low value in res...