Leica SPIDER GR30 User Manual page 17

Active Lightning Pro-
tection System
Passive Lightning Pro-
tection System
Down conductor sys-
tem
Safety Directions
a
b
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Example: Internal system installation in a cabinet
a
b
c
d
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An Active Lightning Protection (ALP) System combines protection with lightning
detection.
Functionality
• Carrying out preventive measures in advance
Triggering an early streamer of ionised air.
•
The streamer intercepts lightning discharges for the safe passage to a low
impedance down-conductor.
Leica customers reported successful application using products from:
Lightning Protection International Pty Ltd (www.lpi.com.au)
•
A Passive Lightning Protection (PLP) System and an ALP are similar.
The PLP System has no detection (preventive measures) or triggers for an early
streamer.
Leica customers reported successful application using products from:
Huber and Suhner (www.hubersuhner.com)
•
Polyphaser (www.protectiongroup.com)
•
A down conductor system consists of a bonding network that covers the outer
face of a structure, for example building.
c
a Air termination
d
b Foundation
e
c Antenna cable
d
f
d SPDs
g
e Receiver
f EBB
h
g Cabinet
i
h Ethernet
j
i Power
j Grounding system
a Cabinet
b Receiver
c Metal partition panel
e
d EBB
e SPDs
f Meteo
f
g Antenna cable
g
h Ethernet
h
i
i Power/solar panel
j
j Nivel
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