BS EN 62305-1:2011 Part 1: General principles · BS EN 62305-1 General Principles 1 - BS EN 62305...
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© 2013 DEHN + SÖHNE / protected by ISO 16016 BS EN 62305-1:2011 Part 1: General principles 1 - BS EN 62305 General Principles 1
Transcript of BS EN 62305-1:2011 Part 1: General principles · BS EN 62305-1 General Principles 1 - BS EN 62305...
© 2013 DEHN + SÖHNE / protected by ISO 16016
BS EN 62305-1:2011 Part 1:
General principles
1 - BS EN 62305 General Principles 1
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Introduction to
BS EN 62305
1 - BS EN 62305 General Principles 2
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BS EN 62305:- History
1 - BS EN 62305 General Principles 3
CP326 – 1965 introduced the theory of an angle of protection
BS 6651 - 1985 British Standard for Lightning Protection for years
BS EN 62305:2006
– new European Lightning Protection standard came into use in
the UK in August 2006.
– ran in parallel with BS6651 until 31st August 2008 when the old
standard was completely withdrawn
BS EN 62305:2011
– Parts 1,3 & 4 updated in 2011, part 2 updated in 2012
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BS EN 62305 Layout
1 - BS EN 62305 General Principles 4
62305-1
General Principles
62305-2
Risk Management
62305-3
Physical damage
and life hazard
62305-4
Electrical and
electronic systems
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Document sizes BS 6651 / BS EN 62305: 2011
1 - BS EN 62305 General Principles 5
BS6651 Code of Practice for protection 140 Pages
of structures against lightning
BSEN 62305-1 General Principles 70 Pages
BSEN 62305-2 Risk Management 144 Pages
BSEN 62305-3 Physical Damage to 160 Pages
Structures and Life Hazard
BSEN 62305-4 Electrical and Electronic 89 Pages
Systems
( BS6651 – annex C – Surge Protection 36 Pages )
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Differences between IEC 62305, EN 62305 and
BS EN 62305
1 - BS EN 62305 General Principles 6
Both sets of documents derived from the base standard IEC 62305
When IEC 62305 was voted on by the European committees it was
accepted and became a European norm EN 62305
All countries working to the EN abide by the majority of the content
of the IEC documents but are allowed local variations that reflect any
major differences within the specific country
BS EN relects differences experienced within the UK and has country
specific risk levels
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Insurance Industry Details
EU Regional Insurance Claims
1st Qtr 2nd Qtr 3rd Qtr
Lightning Related
Confirmed ‘other’
1 - BS EN 62305 General Principles 7
50%31%
19%
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BS EN 62305-1
General Principles
1 - BS EN 62305 General Principles 8
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BS EN 62305-1
General Principles
1 - BS EN 62305 General Principles 9
Introduction to the BS EN 62305 set of documents.
Describes each document and its relationship to the other
documents in the series.
Introduces fundamental principles:-
– Source of Damage and Loss in a structure
– Lightning Protection Levels and Parameters
– Lightning Protection Zones (LPZ)
– Parameters of lighting current
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BS EN 62305-2
Risk Management
1 - BS EN 62305 General Principles 10
Complex document embracing many more factors than the BS6651
risk assessment.
By working through a series of formulae the process assists the user
in deciding what protection is required. The actual risk (RA) must be
below the tolerable level (RT).
Depending upon the calculated risk values the protective
requirements may be the installation of a LPS system and /or Direct
lightning current arresters against LEMP and Surge arresters against
SEMP.
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Risk components
1 - BS EN 62305 General Principles
Each risk consists of several risk components
R1 = RA+ RB+ RC
+ RM+ RU+
RV+ RW+ RZ
R2 = RB+ RC+
RM+ RV +
RW+RZ
R3 = RB+ RVR4 = RA+ RB+ RC
+ RM+ RU+
RV+ RW+ RZ
RiskCurrent
WaterGas
Human life Service to the public Cultural heritage Economic loss
R1
= = = =
R2 R3 R4
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BS EN 62305-3
Physical damage to structures and life hazard
1 - BS EN 62305 General Principles 12
External Lightning Protection System:-
– Air-Termination and earth termination systems
– Down conductor systems – Isolated and non Isolated
– Components, dimensions and fixings
Internal Lightning Protection System:-
– Lightning equipotential bonding
– Electrical insulation of the LPS using separation distance
Maintenance of LPS and prevention of touch and step voltages
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Design methods for air-termination systems
1 - BS EN 62305 General Principles 13
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BS EN 62305-4
Electrical and electronic systems within structures
1 - BS EN 62305 General Principles 14
Design and installation of SPM (Surge Protection Measures)
Earthing and bonding
Magnetic shielding and line routing
Co-ordinated SPD system
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Surge protection for electrical and electronic systems
1 - BS EN 62305 General Principles (AH 30.07.13 / 8350_E_1)
power network
10 m
> 10 mDEHNflex
DEHNrail
DEHNsafe
10 m
Type 3
Type 3
Type 3
SDB
DEHNventil M
Type 1-2-3
MDB
DEHNguard M
Type 2
DEHNguard M
Type 2
terminal
device
> 10 m
> 10 m
SDB
terminal
device
terminal
device
terminal
device
terminal
device
MDB main distribution board
SDB sub distribution board
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