Lightning protection system
Early streamer emission air terminal
OPR Early streamer emission air terminal
The OPR efficiency (T)
Lightning is one of the most spectacular
meteorological phenomena. Generated
by the interaction of clouds elements
(water and ice), it can kill, injure and
damage. The unique efficiency of the
OPR Early streamer emission is based
on the difference (T), measured in a
laboratory, in between the emission
time of the OPR and the one from a
simple rod. The OPR ESE air terminal is
composed of a striking point connected
to a down conductor to conduct the
lightning to the ground.
Complete autonomy
During a storm the ambient electric field
may rise from 600 V to 10-20 kV/m.
When the electric field reach this level
representing a minimum risk for a lightning,
the OPR begins to get activated and
generates high voltage pulses, helping to
create and propagating an upward leader.
After a strike on the OPR, the lightning
current is driven to ground by the down
conductor to the earth termination system.
Meeting point
Upward leaders
Return arc
Without OPR
Upward leaders
Meeting point
With OPR
Rp3
Rp1
h1
Radius of protection
The radius of protection (Rp) of the OPR is calculated according to the NFC17102
(edition 2011). It depends on the OPR efficiency (T) expressed in micro-seconds.
The maximum value for T is 60 s.
The risk assessment shall be calculated according to the NF C17102AnnexA/
IEC62305-2 and will define the protection level (LPL I, II, III or IV) which will be used
in the determination of the OPR radius of protection.
Rp(h) :
Rolling sphere radius r(m)
LPL II
LPL III LPL IV
20
30
45
h2
h3
Protection radius at a given height (h)
Rp(h) = 2rh - h + (2r + ) (for h 5 m)
2
For h < 5 m, refer to the table below
h
LPL I
Rp2
:
H eight of the OPR tip above the surface(s)
to be protected
r(m) :
60
Standardized striking distance
6
(m) = 10 .T (OPR efficiency)
OPR radius of protection
Protection level
OPR
h (m)
2
3
4
5
6
8
10
15
20
45
50
55
60
I (r = 20 m)
OPR 30
OPR 45
OPR 60
Radius of protection Rp (m)
19
25
31
29
38
47
38
51
63
48
63
79
48
63
79
49
64
79
49
64
79
50
65
80
50
65
80
43
65
76
40
65
74
36
65
72
30
65
69
2 | ABB OPR lightning protection system
II (r = 30 m)
OPR 30
OPR 45
OPR 60
III (r = 45 m)
OPR 30
OPR 45
OPR 60
IV (r = 60 m)
OPR 30
OPR 45
OPR 60
22
33
44
55
55
56
57
58
59
58
57
55
52
35
52
69
86
87
87
88
89
89
89
88
86
85
25
38
51
63
64
65
66
69
71
75
75
74
73
39
58
78
97
97
98
99
101
102
105
105
105
104
28
43
57
71
72
73
75
78
81
89
89
90
90
43
64
85
107
107
108
109
111
113
119
120
120
120
28
42
57
71
71
72
72
73
74
75
75
75
75
32
48
65
81
81
82
83
85
86
90
90
90
90
36
57
72
89
90
91
92
95
97
104
104
105
105
A complete expertise
OPR ordering details
Description
Type
Order code
OPR 30
OPR 45
OPR 60
IMH3000
IMH4500
IMH6000
2CTB899800R7000
2CTB899800R7500
2CTB899800R7100
Order code
Weight
kg
2.400
2.400
2.400
46
T
s
30
45
60
169
Mast to be ordered separately.
Maximum operating temperature: 120 C.
Masts
Description
Type
m
2.3
3.0
Stainless steel ESEAT mast 30
Stainless steel ESEAT mast 35
MAT3002
MAT3503
OPR
Lightning rod head
Weight
(1 pce)
kg
2CTH070002R0000 3.000
2CTH070011R0000 5.200
2300
Height
To be noted that the MAT3503 needs to be ordered with it screw and fixing kit KFP0035
made of a connecting clamp especially designed for 35mm mast.
Kit for MAT3503
Description
Type
Screw and fixing
KFP0035
Order code
Weight
(1 pce)
kg
2CTH050027R0000 -
OPR with a stainless steel mast
30 - L = 2.3 m
Installing / testing
The installation and verification of lightning protection
systems using one or more OPR units must be
performed in accordance with the manufacturer's
recommendations and to the NFC17102 standard.
Or
SDB - Sub Distribution Board
SDB
ABB Type 2
Auto protected surge protective device
OVR Plus N1 40 or OVR Plus N3 40
OPR ESE air terminal
OPR
ABB Type 1
Surge protective device
OVR T1 3N 25 255 TS
Or
Or
Electronic
Lightning
strike counter
With data
recording
Telecom
Board
MDB
Mechanical
Lightning strike counter
Main
power input
MDB - Main Distribution Board
Telephone
input
ABB pluggable telephone
and data line surge
protective device
OVR TC 200V P
ABB OPR lightning protection system | 3
ABB France
Low Voltage Products Division
Ple Foudre Soul & Hlita
1, avenue des Victimes du 11 juin 1944
BP 303
F-65203 Bagnres-de-Bigorre / France
Tel. : +33 (0)5 62 91 45 60
Fax : +33 (0)5 62 91 45 62
You can find the address of your local sales organisation
on the ABB home page
http://www.abb.com/contacts -> Low Voltage products
www.abb.com/lowvoltage
Note
We reserve the right to make technical changes or
modify the contents of this document without prior
notice.
ABB does not accept any responsibility whatsoever
for potential errors or possible lack of information in
this document.
We reserve all rights in this document and in the
subject matter and illustrations contained therein.
Any reproduction, disclosure to third parties or
utilization of its contents in whole or in parts is
forbidden without prior written consent of ABB.
Copyright 2014 ABB - All rights reserved
1TXH000134C0205 - Printed in France (09.2014 PDF)
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