83
工學碩士學位論文 뇌해방지 시스템의 유지관리 실태 및 개선방안에 관한 연구 A Study on the Actual Conditions of Maintenance and Improvement Scheme in Lightning Protection Systems 20062仁荷大學校 工學大學院 情報電氣工學科 金 東 星

뇌해방지 시스템의 유지관리 실태 및 개선방안에 관한 연구 · 은 분야에서 컴퓨터화 된 전자기기들이 점점 많이 사용되고 있다. 따라서

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  • A Study on the Actual Conditions of Maintenance and

    Improvement Scheme in Lightning Protection Systems

    2006 2

  • A Study on the Actual Conditions of Maintenance and

    Improvement Scheme in Lightning Protection Systems

    2006 2

  • 2006 2

    :

    :

    :

  • - i -

    ,

    .

    .

    .

    , ()

    . (LPS)

    KS C IEC 61024-1

    . ESE , ESE

    , IEC 61024-1 NFPA 780

    . ESE

    , .

    .

    . ,

    .

  • - ii -

    ABSTRACT

    Lightning is responsible for deaths and injuries of living beings,

    serious disturbances in power systems and public services like

    information and communication equipments. Recently, the

    computerized electronic equipments are increasingly used in wide

    fields of industry and business. Thus there is a strong need for the

    precise, effective protection of humans and electronic circuits

    against lightning. In this study, the actual status of construction,

    maintenance and inspection of the existing external lightning

    protection systems were examined by on-the-spot surveys.

    Unfortunately, most of newly constructed external lightning

    protection systems(LPSs) are not designed and installed in

    accordance with KSC IEC standard 61024-1. The early streamer

    emission(ESE) lightning rods is applied as an air termination system.

    The ESE lightning rods and non-ordinary lightning rods offer no

    advantages relative to ordinary lightning rods and is not recognized

    in standards of IEC 61024-1 and NFPA 780. Thus, the zone of

    protection afforded by any configuration of ESE lightning rods is

    badly determined and shall be reconsidered to be adequately

    protected. A few of down-conductors and ground-termination

    systems are badly constructed. The proper maintenance and

    inspections of external LPSs are actually not accomplished.

    Consequently, it is requested that an annual visual inspection be

    made and the external LPS be thoroughly inspected periodically by

    qualified experts of authorities.

  • - iii -

    Abstract

    1 1

    1.1 1

    1.2 2

    2 4

    2.1 4

    2.2 8

    3 1 4

    3.1 14

    3.2 16

    3.3 17

    3.4 21

    3.4.1 21

    3.4.2 22

    3.4.3 24

    3.4.4 30

    3.4.5 31

  • - iv -

    4 37

    4.1 39

    4.1.1 39

    4.1.2 41

    4.2 46

    4.3 47

    4.3.1 47

    4.3.2 47

    4.3.3 49

    4.3.4 50

    4.3.5 51

    4.3.6 51

    4.4 52

    4.4.1 52

    4.4.2 53

    5 5 4

    5.1 54

    5.2 58

    5.3 67

    6 7 1

    7 3

  • - v -

    2.1 4

    2.2 6

    2.3 7

    2.4 8

    2.5 9

    2.6 10

    2.7 11

    2.8 12

    3.1 16

    3.2 20

    3.3 21

    3.4 25

    3.5 27

    3.6 29

    3.7 30

    3.8 32

    3.9 33

    3.10 34

    3.11 B 36

    4.1 40

    4.2 KS C IEC 61024 45

    5.1 55

    5.2 58

    5.3 60

    5.4 62

    5.5 63

  • - vi -

    5.6 64

    5.7 65

    5.8 67

    5.9 68

    5.10

    69

    2.1 10

    2.2 13

    3.1 18

    3.2 19

    3.3 23

    3.4 26

    3.5 31

    4.1 37

    4.2 38

    4.3 38

    4.4 KSC IEC 61024-1 41

    4.5 KSC 9609 KSC IEC 61024-1 45

    4.6 49

  • - 1 -

    1

    1 . 1

    , .

    ,

    .

    2

    , ,

    , ,

    , ,

    .

    ,

    .

    ,

    .

    ,

    .

  • - 2 -

    .

    KS C IEC 61024-1

    .

    ,

    .

    1 . 2

    .

    ,

    , ,

    .

    .

    ,

    . KS C IEC 61024-1

  • - 3 -

    ,

    .

    .

    ,

    .

    , .

    .

  • - 4 -

    2

    2. 1

    ,

    (lightning discharges) . ,

    . 2.1

    .

    ( a ) ( b ) ( c )

    [km

    ]

    0

    5

    10

    15

    20

    (a) .

    (b) , ,

    .

    (c) .

    2.1

    Fig. 2.1 Shapes of thundercloud changes and types of lightning

    discharges

  • - 5 -

    (cloud-to-ground lightning discharges)

    (intracloud lightning discharges),

    (intercloud lightning discharges),

    (cloud-to-air lightning discharges)

    .

    ,

    ,

    , 4

    .

    (-) : 2.2 (1a), (1b)

    (-)

    . (+) : 2.2 (2a), (2b)

    (+)

    .

    . (+) : 2.2

    (3a), (3b) (+)

    . (-) : 2.2 (4a),

    (4b) (-)

    .

    2.2 (a)

    (-) .

  • - 6 -

    .

    (-)

    , (+) .

    - - - - -- - - - - -

    - - - - -- - - -

    - - - - -----

    + + + + + + + + +

    1a 2 3 4

    4b3b2b1b

    + + + + + + + + +

    + + + + + + + + + + + + + + + + + +

    - - - - - - - - - - - - - - - - -

    - - - - - - - - - - - - - - - - - -

    - - - - - -

    + + + + + ++ + + + + + ++ + + + + ++ + + + + +

    ----

    ----

    ++++

    ++++

    ----

    ++++

    ++++r

    r r

    l

    l

    l

    l

    - - - - -- - - - - -

    - - - - -- - - -

    - - - - -

    - - - - -- - - - - -

    - - - - -- - - -

    - - - - -

    + + + + + ++ + + + + + ++ + + + + ++ + + + + +

    - - - - - -

    + + + + + ++ + + + + + ++ + + + + ++ + + + + +

    ----

    ----

    ++++

    ++++

    ----

    ++++

    ++++r

    r r

    l

    l

    l

    l

    - - - - -- - - - - -

    - - - - -- - - -

    - - - - -

    - - - - -- - - - - -

    - - - - -- - - -

    - - - - -

    + + + + + ++ + + + + + ++ + + + + ++ + + + + +

    + + + + + ++ + + + + + ++ + + + + ++ + + + + +

    + + + + + ++ + + + + + ++ + + + + ++ + + + + +

    + + + + + ++ + + + + + ++ + + + + ++ + + + + +

    + + + + + ++ + + + + + ++ + + + + ++ + + + + +

    + + + + + ++ + + + + + ++ + + + + ++ + + + + +

    + + + + + ++ + + + + + ++ + + + + ++ + + + + +

    v

    vv

    - - - - -- - - - - -

    - - - - -- - - -

    - - - - -

    - - - - -- - - - - -

    - - - - -- - - -

    - - - - -

    - - - - -- - - - - -

    - - - - -- - -

    + + + + + ++ + + + + + ++ + + + + ++ + + + + +

    + + + + + ++ + + + + + ++ + + + + ++ + + + + +

    + + + + + ++ + + + + + ++ + + + + ++ + + + + +

    + + + + + ++ + + + + + ++ + + + + ++ + + + + +

    + + + + + ++ + + + + + ++ + + + + ++ + + + + +

    + + + + + ++ + + + + + ++ + + + + ++ + + + + +

    v

    vv

    - - - - -- - - - - -

    - - - - -- - - -

    - - - - -

    - - - - -- - - - - -

    - - - - -- - - -

    - - - - -

    - - - - -- - - - - -

    - - - - -- - - -

    - - - - -

    - - - - -- - - - - -

    - - - - -- - - -

    - - - - -

    v

    a a a

    l:, r:, v:

    2.2

    Fig. 2.2 Classification of lightning cloud-to-ground strokes

    . 2.4

    230 m

    1 cm

    300 /sec

    . m

    , .

    m

    ,

  • - 7 -

    . 1/3, 2.3

    .

    , .

    ,

    ,

    .

    .

    2.3

    Fig. 2.3 Development of the stepped leader and return strokes in the

    negative lightning

  • - 8 -

    2.4

    Fig. 2.4 Formative process of leader conduction channel by lightning

    return strokes

    2. 2

    ,

    .

    ()

    (-)

    (flash) , 0.012

    sec. ,

    (stroke) 34

    .

    (streak-camera)

    2.5 .

  • - 9 -

    ,

    .

    2msec

    30 msec

    60 sec

    2msec

    30 msec

    60 sec

    40 msec

    3K

    m

    60 sec

    70 sec

    1 msec

    20 msec

    3km

    (a)

    (b)

    2.5

    Fig. 2.5 Luminous features of a lightning flash

    (return stroke)

    . 2.6 ,

    2.1 .

  • - 10 -

    2.1

    Table 2.1 Electrical properties of the stepped leaders

    [m/s] (126)105 (15)105

    [C/m] 10-3 10-1 10-2 10-1

    [A] 102 105

    [] 30[50]125 27300

    (a)

    (b)

    2.6

    Fig. 2.6 Photographs of lightning discharges

  • - 11 -

    (preliminary breakdown) ,

    ,

    . ,

    . (stepped leader) 2.7

    50 m 3090 ( 50

    )

    .

    1.5105 m/s 3 km

    20

    .

    _____

    _

    _

    : 1.5 x 105 m/sec

    : 50

    ++

    : 50 m

    _

    _

    _

    _

    _

    +

    +

    ++

    ++

    ++

    +

    +++

    ++

    +

    2.7

    Fig. 2.7 Propagation process of a stepped leader

    ,

  • - 12 -

    .

    2.8

    . (striking

    distance)

    ,

    .

    2.8

    Fig. 2.8 Propagation and adhesive process of a lightning return stroke

    ,

    . ,

    1/31/10 ,

    10100 . 1

    ,

    1 .

  • - 13 -

    2.2 , [ ] .

    2.2

    Table 2.2 Data for various physical parameters of a lightning return

    stroke

    [kA/] 1[10]80 0.01[0.63]100

    [] 1[2]30 0.1[32]104

    [m/s] (2[5]14)107 (1.3[4.5]23)107

    [] [40]250 1[50]104

    [kA] [24] 2[24]150

    1

    . 1

    ( ms)

    (dart leader) 2, 3

    . (multiple cloud-to-ground lightning

    return strokes) , 6070% 2

    , 1 .

    (dart leader) ,

    2106

    m/s ,

    (branch) .

    4080 , 100

    , 100

    .

  • - 14 -

    3

    3. 1

    ,

    .

    2

    , ,

    , ,

    , ,

    .

    ,

    .

    ,

    .

    ,

    .

    .

  • - 15 -

    ,

    . ,

    .

    KS C IEC 61024-1

    ,

    . KS C IEC 61024-1

    3.1 .

    60 m

    ,

    . , ,

    ,

    .

    IEC/TC 81(/)

    ,

    .

    ,

    , .

    , ,

    .

  • - 16 -

    109

    6

    5

    7

    8

    11 12

    13

    4

    3

    1

    2

    l

    , ,

    , , (bonding bar),

    , TV, , ,

    , , ,

    , @

    3.1

    Fig. 3.1 A schematic diagram of a lightning protection system of a

    structure using a lightning rod

    3. 2

    .

    , , ,

    .

    (panic) , , ,

  • - 17 -

    , .

    , ,

    . ,

    .

    , .

    4 4.1

    , KS C IEC61024-1

    .

    ( 1 )

    , , ,

    ,

    60 m .

    ( 2)

    ,

    ,

    60 m , ,

    , ,

    4

    3. 3

    ,

  • - 18 -

    .

    . ,

    , .

    3.1

    Table 3.1 Classification of structures

    , ,

    .

    .

    .

    , ,

    ,

    ()

    . .

    ,

    ,

    ,

    .

    , ,

    ,

    .

    ,

    .

    .

    ,

    ,

    .

    ,

    ,

    .

    ,

    ,

    .

  • - 19 -

    - Ng Ae

    - Nc

    Nc Nd

    .

    Nd Nc . Nd > Nc

    E1- Nc/ Nd

    , 3.2 .

    3.2

    Table 3.2 LPS efficiencies corresponding with protection levels

    (E)

    0.9 8

    0.9 5

    0.9 0

    0.8 0

    .

    3.2 . E E'

    .

    - .

    - .

    -

    .

  • - 20 -

    No

    Yes

    Yes

    -

    - (Ng)

    -

    EEc

    - Ae

    Nd = NgAe

    -

    Nc

    E

    .

    E

    .

    E c=1-N cN d

    No

    NdNc

    EEc

    3.2

    Fig. 3.2 A flowchart for selection of LPS

  • - 21 -

    3. 4

    (lightning protection

    system: LPS) ,

    .

    3.4.1

    ,

    ,

    (external lightning protection system)

    .

    3.3

    Fig. 3.3 Components of an external LPS

  • - 22 -

    ,

    ,

    3

    . ,

    .

    3.3 ,

    .

    (air-termination system)

    , , , ,

    , , , , ,

    . (down

    conductor)

    ,

    .

    (ground termination system)

    .

    ,

    .

    , ,

    , .

    3.4.2

    .

  • - 23 -

    (protection level) , , , 4 ,

    , .

    , , ,

    , , , ,

    .

    3.3 ,

    .

    3.3 ,

    Table 3.3 Relationship between lightning current, protection level

    and LPS efficiency

    [kA] [m]

    0.98 2.9 20

    0.95 5.4 30

    0.90 10.1 45

    0.80 15.7 60

    (1)

    (2)

    , ,

    , ,

    , ,

  • - 24 -

    , , ,

    ,

    3.4.3

    ,

    .

    0.1 m

    .

    , ,

    .

    , ,

    .

    (1)

    . (rods),

    (stretched wires), (meshed conductors) ,

    ,

    , .

    (2)

  • - 25 -

    . ,

    . , ,

    ,

    .

    R

    h

    3.4

    Fig. 3.4 Protected space by a single rod

    3.4

    (protective angle method)

    . KS C IEC 61024-1 3.4 a

    ,

    . h IEC61024-1 3.4

  • - 26 -

    R .

    1/2

    .

    .

    3.4

    Table 3.4 Protected space and protection efficiency of

    air-termination system according to the protection levels

    h( m )

    R ( m )

    20 30 4 5 60

    ( m )( ) ( ) ( ) ( )

    0. 9 8 20 25 * * * 5

    0. 9 5 30 35 25 * * 1 0

    0. 9 0 4 5 4 5 35 25 * 1 0

    0. 8 0 60 5 5 4 5 35 25 20

    * , , h

    , R .

  • - 27 -

    hh

    (a)

    20m

    30m

    45m

    60m

    55

    45

    35

    25

    (b)

    3.5

    Fig. 3.5 Protected space by a vertical rod

  • - 28 -

    ,

    . (rolling sphere method)

    3.6

    .

    .

    ,

    .

    KS C IEC 61024-1

    .

    , R

    .

    . 3.4 KS

    C IEC 61024-1

    .

  • - 29 -

    R

    R

    R

    R

    3.6

    Fig. 3.6 Design of an LPS air-termination according to the rolling

    sphere method

    3.7

    IEC .

    ,

    .

    .

    a) .

    -

    -

    - 1/10

    b)

    .

    c) 3.4 .

  • - 30 -

    d) 2

    .

    .

    e) .

    L[m]

    L[m]

    5 10 15 20

    L[m]

    L :

    L[m]

    L[m]

    3.7

    Fig. 3.7 Mesh width according to the protection level

    3.4.4

    .

    . ,

    .

    ,

  • - 31 -

    .

    (a)

    .

    (b) KS C IEC 61024-1 3.5

    .

    3.5

    Table 3.5 Distance between down conductors

    according to the protection level

    [m]

    10

    15

    20

    25

    3.4.5

    (ground termination system)

    .

    . KS C IEC 61024-1

    .

    , , ,

    .

  • - 32 -

    1

    . A

    B .

    ( 1 ) A

    4

    5

    3

    2

    1

    1 : .

    2 : ( ).

    3 : .

    4 : .

    5 :

    3.8

    Fig 3.8 Example of grounding electrode connected to down conductor

    A .

  • - 33 -

    . A

    3.8 .

    .

    A

    3.9 .

    , 2

    . l1 ,

    0.5l1 ,

    3.10 .

    . 10

    .

    3.9

    Fig 3.9 Minimum length of grounding electrodes according to the

    protection levels

    0

    20

    40

    60

    80

    100

    I

    II

    IIIIV

    1(m

    )

    (m)

    500 1000 1500 2000 2500 30000

  • - 34 -

    3.10

    Fig 3.10 Installation methods of grounding electrodes for lightning

    protection

    ( 0.35m2 )

    0.5 m

    0.5 1 ()

    1

    ( 2) B

    B (), (

    ) .

    . B

    (

    ) , ,

    .

    B

    r , A

    l1

    r l1 ( 3. 1 )

  • - 35 -

    . l1 , , -

    3.9 . l1 r

    . lh

    lv .

    lhl1r ( 3. 2)

    lv(l1r) / 2 ( 3. 3)

    ,

    , . B

    3.11 ,

    0.5 m ,

    1 m .

    ,

    ,

    .

    B

    .

    .

    .

  • - 36 -

    3.11 B

    Fig. 3.11 Examples of type B arrangement of grounding

    electrode systems

  • - 37 -

    4

    KS C IEC 61024-1

    60 m

    (LPS) .

    .

    4.1 4.3 .

    4.1

    Table 4.1 Standards for lightning protections according to the Architect

    Act

    55 87 20

    20 ()

    87 2 20

    .

    1. 60(

    45) ,

    2. 25 cm ,

    3

    3. 20 cm,

    1.5m , 1.5

    . , , ,

    ,

    .

    4. 12 mm

    ,

    5. 30 mm2,

    50 30 mm2 ,

    6. 50 m , 1

    3 m

  • - 38 -

    4.2

    Table 4.2 Standards for lightning protections according to the industry

    safety health act

    ,

    357 ( )

    . ,

    3.2 mm ,

    5 .

    1

    .

    1. 45

    2. 10

    3. 30mm2

    4. (gauge)

    1.5 m

    1 2 ()

    10

    .

    4.3

    Table 4.3 standards for lightning protections according to the dangerous

    thing safety management act

    , 28

    4]

    .

    7. [] 10 (6

    ) (KS C IEC 61024)

    . ) . ,

    .

  • - 39 -

    ,

    .

    .

    4 . 1

    4.1.1

    KS C IEC 61024-1 (designers of

    lightning protection systems) (LPS)

    , 11

    .

    ,

    (electromagnetic compatibility : EMC)

    .

    .

    .

    ,

  • - 40 -

    .

    .

    1. A KS C IEC 61024-1-1 : B KS C IEC 61024-1-2

    2.

    4.1

    Fig. 4.1 Flowchart for design of lightning protection systems

  • - 41 -

    4.1.2

    KS C IEC 61024-1 60 m

    1

    .

    KS C IEC 61024-1 (KS C 9609)

    . KS C 9609()

    .

    4.4 KS C IEC 61024-1

    Table 4.4 Main contents in KS C IEC 61024-1

    K S C IE C 61 024 - 1 () KS C 9609

    [ ]

    ,

    .

    ,

    .

    [ ]

    ,

    ()

    .

    2.

    2.1

    2.2.1

    .

    -

    - ( )

    -

    3.

    3.1

    3.1.1

    -

    3.1.2

    -

    2.2.2

    .

    -

    -

    -

    3.1.1

    3.1.2

  • - 42 -

    2.2.2

    .

    R(m)

    L(m)

    20 30 45 60

    ( )

    ( )

    ( )

    ( )

    I 20 25 * * * 5

    II 30 35 25 * * 10

    III 45 45 35 25 * 15

    IV 60 55 45 35 25 20

    * .

    3.1

    3.1.1

    : 60(

    )

    3.3

    : 45

    2.2

    2.2.1

    2.2.3

    .

    , 25

    1 .

    (m)

    I 10

    II 15

    III 20

    IV 25

    2.2.5 " " ( )

    (a) .

    (b)

    (c)

    (d)

    3.1.3

    (1)

    .

    (a) 2 . ,

    50

    1 .

    (b)

    50m .

    (2)

    .

    (9)

    , ,

    2.5m 0.3m

    .

  • - 43 -

    2.3

    2.3.1

    .

    .

    () IEC

    .

    2.3.3

    2

    .

    2.3.3.1 A

    , ,

    ( 0.35 )

    2 .

    ,

    .

    10

    .

    2.3.3.2 B

    ,

    .

    2.3.3.5 (B )

    .

    3.1.4

    (1) 1

    .

    (2) 1.4mm

    0.35()

    , 3mm 0.35

    ()

    , ,

    , ,

    . ,

    .

    (3)

    .

    3m

    3m .

    (4) 10

    .

    (5)

    20 .

    3.1.6 , RC, SRC

    (3)

    5

    .

    2.4.1 (, , ) .

    3.1.3 (6) , .

    I~IV

    (CU) 35 16 50

    (AI)

    70 25 -

    (Fe) 50 50 80

    2.5.1 .2.5.2 ( ) 5 . [ : ]

    * .

    3.1.3 (4) , , , .(a) 30, 50 .3.1.1 (4) ( ), () 12mm .

  • - 44 -

    km

    1

    0.5

    20

    60

    km

    I 0.1

    II 0.075

    III~IV 0.05

    3.2 (=) , "d" "s" . ds s=ki(kc/km)l [m], ki : ( 8)kc : ( )km : ( 9)l :

    km

    ki 3.3 .

    3.1.3 (12) , 1.5m .(13) 1.5m , , , , .(14) , , , , , , , (12) (13) .

    3.2.2 (4) 2m .

    3.3 (7) 3m , 2.5m .

    4.2

    4.2.1

    a) ?

    b)

    ?

    .

    c)

    ?

    4.2.3

    .

    .

    4.

    4.1

    ,

    .

    4.2

    .

    4.3 3

    .

    ,

  • - 45 -

    60m 45m 30m 20m

    KS C 9609

    60 33,929 60 19,085 60 8,482 60 3,769

    KS C IEC

    61024-125 2,459 35 3,119 45 2,827 55 2,653

    92.76% 83.66% 66.7% 32%

    4.2 KS C IEC 61024-1 KSC 9609

    Fig. 4.2 Comparison of the protected space in KSC IEC 61024-1 to that

    in KSC 6909

    4.5 KSC 9609 KSC IEC 61024-1

    Table 4.5 Comparison of the protected spaces determined by KSC 9609

    and KS C IEC 61024-1 standards

  • - 46 -

    4 . 2

    2

    2 1

    .

    KS C IEC 61024-1

    ,

    .

    KS C IEC 61024-1

    ,

    .

    ,

    .

    ,

    .

    .

  • - 47 -

    4 . 3

    4.3.1

    .

    1)

    2)

    ,

    3)

    KS C IEC

    61024-1 ,

    . ()

    ,

    .

    4.3.2

    .

    -

    - 1)2)

    -

    -

  • - 48 -

    .

    -

    -

    .

    -

    -

    - ,

    -

    - (Type)

    -

    .

    1 1 .

    , 2 6

    .

    1-4

    .

    .

  • - 49 -

    4.6

    Table 4.6 Inspection periods of lightning protection systems

    2 6

    4 12

    6 12

    .

    ,

    .

    4.3.3

    KS C IEC 61024-1

    .

    .

    - ,

    .

    - .

    ,

  • - 50 -

    ,

    , ,

    4.3.4

    .

    - ,

    -

    ,

    .

    ,

    .

  • - 51 -

    4.3.5

    .

    .

    .

    .

    -

    -

    -

    -

    ,

    .

    -

    4.3.6

    KS C IEC 61024-1

    .

    .

    ,

    ()

  • - 52 -

    .

    4 . 4

    .

    .

    .

    KS C IEC 61024-1

    .

    .

    KS C IEC 61024-1

    .

    .

    4.4.1

    .

    -

    -

  • - 53 -

    -

    .

    .

    .

    -

    -

    -

    -

    - (SPD)

    -

    4.4.2

    .

    .

    .

    73

    ,

    .

    .

  • - 54 -

    5

    5 . 1

    ,

    ,

    .

    ,

    ,

    3 .

    ,

    .

    (a)

  • - 55 -

    (b)

    (c)

    5.1

    Fig. 5.1 Various types of LPS

  • - 56 -

    5.1

    .

    ,

    ,

    . 5.2

    .

    5.1

    .

    , ,

    .

    (a)

  • - 57 -

    (b)

    (c)

  • - 58 -

    (d)

    5.2

    Fig. 5.2 Photographs of external LPS composed of stretched wires

    5 . 2

    , ,

    , , , , ,

    , ,

    .

    .

    , .

    KS C IEC 61024-1 , ,

    . KS C IEC 61024-1

    (ESE),

    .

  • - 59 -

    5.3 , ,

    . 5.3 (a) KS C IEC 61024-1

    . 5.3 (b) (c)

    .

    80 % .

    (a)

  • - 60 -

    (b) (ESE)

    (c)

    5.3

    Fig. 5.3 Various types of air-termination systems

  • - 61 -

    ,

    .

    0.1 m ,

    , 1.5 m . 5.4

    . 5.4 (a)

    TV 1.5 m

    , 5.4 (b)

    1.5 m

    .

    .

  • - 62 -

    (a)

    (b)

    5.4

    Fig. 5.4 Examples of air-termination rods installed on the roof of

    structures

  • - 63 -

    5.5

    . 5.5 (a)

    , 5.5 (b)

    . KS C IEC 61024-1

    ,

    .

    (a) (b)

    5.5

    Fig. 5.5 Example of unsuitable installations of air-termination rods and

    down-conductors

  • - 64 -

    5.6

    .

    25 cm

    . 5.6

    ,

    .

    5.6

    Fig. 5.6 Example of unsuitable installation of air-termination systems

    5.7

    . 5.7 (a) (ESE)

  • - 65 -

    ,

    .

    ,

    . 5.7 (b) 5.7 (b)

    .

    (a) (b)

    5.7

    Fig. 5.7 Examples of unsuitable installations of lightning rods and

    down-conductors

    5.8

    . 5.8 (a)

  • - 66 -

    , 5.8

    (b)

    . 5.8 (a) (b)

    .

    (a) (ESE)

  • - 67 -

    (b)

    5.8

    Fig. 5.8 Examples of recently installed air-termination systems

    5 . 3

    .

    . KS C

    IEC 61024-1

    .

    , ,

    , .

  • - 68 -

    5.9

    Fig. 5.9 Separately constructed LPS grounding terminal box

    5.9 5.1 (b)

    .

    5.9 1 m 3

    .

    ,

    .

    ,

    .

  • - 69 -

    (a) (b)

    5.10

    Fig. 5.10 LPS grounding terminal box connected to steel reinforce

    flamework

    5.10 5.1 (c)

    .

    5.10

    . 2

    5.10 (a)

    , 5.10 (b)

    . ,

  • - 70 -

    ,

    .

    ,

    .

  • - 71 -

    6

    ,

    , , ,

    , ,

    .

    (1) KS C IEC 61024-1

    .

    (2)

    .

    ,

    .

    (3) KS C IEC 61024-1

    ,

    .

    , 1

    3 , ,

    , ,

    KS C IEC 61024-1

    .

  • - 72 -

    (4) KS C IEC 61024-1

    .

    ,

    , 13

    , ,

    .

  • - 73 -

    [1] , ,

    , pp. 1218, 2001

    [2] , " ",

    pp. 11-37, 7698, 2004

    [3] , " ",

    pp. 3744, 2002

    [4] , " 1", , pp. 465-476, 2001

    [5] KS C IEC 61024 , pp. 94

    97, 2004

    [6] ,

    , Vol.11, No.4, pp. 35, 2003

    [7] , ,

    , Vol.17, No.6, pp. 1620, 2003

    [8] ,

    , pp. 443445, 2001

    [9] , ,

    , Vol.17, No.4, pp. 3637, 2003

    [10]

    [11] ,

    pp. 45, 2002

    [12] ,

    , pp. 27, 2004

    [14] , , ,

    , Vol.52, No.4, pp. 4748, 2003

  • - 74 -

    .

    .

    .

    .

    , , , ,

    .

    , RGB

    ,

    , .

    , , , ,

    ...

    ,

    , , , ,

    , , , , ,

    .

    ,

    .

    , 3

    .

    2005

    1 1.1 1.2 2 2.1 2.2 3 3.1 3.2 3.3 3.4 3.4.1 3.4.2 3.4.3 3.4.4 3.4.5 4 4.1 4.1.1 4.1.2 4.2 4.3 4.3.1 4.3.2 4.3.3 4.3.4 4.3.5 4.3.6 4.4 4.4.1 4.4.2 5 5.1 5.2 5.3 6 2.1 2.2 3.1 3.2 3.3 3.4 3.5 4.1 4.2 4.3 4.4 KSC IEC 61024-1 4.5 KSC 9609 KSC IEC 61024-1 4.6 2.1 2.2 2.3 2.4 2.5 2.6 2.7 2.8 3.1 3.2 3.3 3.4 3.5 3.6 3.7 3.8 3.9 3.10 3.11 B 4.1 4.2 KS C IEC 61024 5.1 5.2 5.3 5.4 5.5 5.6 5.7 5.8 5.9 5.10 1 1 1.1 1 1.2 22 4 2.1 4 2.2 83 14 3.1 14 3.2 16 3.3 17 3.4 21 3.4.1 21 3.4.2 22 3.4.3 24 3.4.4 30 3.4.5 314 37 4.1 39 4.1.1 39 4.1.2 41 4.2 46 4.3 47 4.3.1 47 4.3.2 47 4.3.3 49 4.3.4 50 4.3.5 51 4.3.6 51 4.4 52 4.4.1 52 4.4.2 535 54 5.1 54 5.2 58 5.3 676 71 73 2.1 10 2.2 13 3.1 18 3.2 19 3.3 23 3.4 26 3.5 31 4.1 37 4.2 38 4.3 38 4.4 KSC IEC 61024-1 41 4.5 KSC 9609 KSC IEC 61024-1 45 4.6 49 2.1 4 2.2 6 2.3 7 2.4 8 2.5 9 2.6 10 2.7 11 2.8 12 3.1 16 3.2 20 3.3 21 3.4 25 3.5 27 3.6 29 3.7 30 3.8 32 3.9 33 3.10 34 3.11 B 36 4.1 40 4.2 KS C IEC 61024 45 5.1 55 5.2 58 5.3 60 5.4 62 5.5 63 5.6 64 5.7 65 5.8 67 5.9 68 5.10 69