1. No category

Comp
nd
ly to the NFC 17 - 102 Sta
ard
ITA
CNRS-HEL
PATENT
Pulsar, the high pulse voltage
E.S.E. lightning conductor
ABOUT HÉLITA
Hélita founded in 1932, is a world leader in direct lightning
top technical schools and Universities, the company prepares
protection. Over 200 000 references testify to Hélita’s
tomorrow’s lightning protection and is the forerunner in its
presence throughout the world. In collaboration with CNRS
sector. These extensive research programs have led Hélita to
(French National Scientific Research Organization), ANVAR
file several patents worldwide.
(French National Agency for the Valorization of Research),
AN EFFICIENT INITIATION ADVANCE
Thanks to its initiation advance, the Pulsar emits a high
voltage signal at clearly determined and controlled
frequency and amplitude.
Its effectiveness is guaranteed by the rapid formation
and propagation of the upward leader, while reducing
the development of space charges around the point.
ENERGY AUTONOMY
The Pulsar is also self-contained. It draws its energy
from the ambient electric field existing at the time of the
storm (10 to 20 kV/m). The initiation advance starts up as
soon as the ambient field exceeds a peak value which
corresponds to the minimum lightning strike risk.
A PROVEN EFFICIENC Y
For over 18 years Hélita has run more than 40 000
strikes in various H.V laboratories to validate the
efficiency of its Pulsar lightning conductors. Hélita is the
only ESE manufacturer in the world having performed so
many tests to measure the values of time gain.
Pulsar range performances (∆T values) are certified by
the main Official Governmental Third Party Organisation.
• BSI (British Standard Institute) · United Kingdom
• LCIE (Central Laboratory for Electrical Industries) · France
• KERI (Korean Electrotechnology Research Institute) · Korea
• CEB (Bazet High Voltage Laboratory) · France
• WHVRI (Wuhan High Voltage Research Institute) · China
Member of ABB Group
PROTECTED AREA S
The radius of protection Rp of a Pulsar is given
Radius of protection as per NF C 17-102 Standard - 1995
by French standard NF C 17-102 of july 1995.
Level of protection
It depends on the initiation advance ∆T of
I (D = 20 m)
h(m)
II (D = 45 m)
III (D = 60 m)
Radius of protection RP (m)
the Pulsar being measured in high voltage
2
10
14
18
3
15
21
24
4
19
28
32
area to be protected (minimum height h=2m).
5
25
36
42
Rp : radius of protection in a horizontal plane located at
a vertical distance h from the Pulsar tip
6
25
37
43
8
26
39
45
10
27
41
48
15
29
45
52
20
29
48
56
45
29
54
67
60
29
54
69
laboratory, on the levels of protection I, II
or III calculated according to the lightning risk
assessment guide (Appendix B of NF C 17-102),
and to the height h of the Pulsar tip over the
h : height of the Pulsar tip above the element(s) to be
protected
D : 20m for level of protection I
45m for level of protection II
60m for level of protection III
6
∆L = 10 .∆T (Initiation advance)
Rp = h (2D-h) + ∆L (2D + ∆L)
Rp
OUR RANGE
O F P RO D U C
TS
≥ 2m
h
• Pulsar 30, Pu
lsar 45, Pulsar
60 lightning
conductors, si
mple rods, mes
hed conducto
rs,
accessories
• Earthing syst
em materials
and accessorie
s
• Surge protec
tive devices an
d coaxial
protections
Your installer/dealer
www.helita.fr
Export Sales Office
8 - 12, rue Marcel Paul · BP 32
95871 Bezons Cedex · France
Tel.: +33 (0)1 34 34 19 75
Fax: +33 (0)1 34 34 19 76
DOUBLE YOU
Head Office
22, rue du 8 Mai 1945
95340 Persan · France
Tel.: +33 (0)1 30 28 60 50
Fax: +33 (0)1 30 28 60 24
01/2003
Member of ABB Group