Using our own in-house developed software, we can generate protection models using common lightning protection
(LP) devices. We will recreate your site in a CAD environment including buildings, structures,
equipment and lightning protection devices and generate a LP model using the rolling sphere
method. The software does not require the overheads of an electrical design package, the model
can be quickly setup using non-attributed graphics with lightning protection devices added and
amended using our custom software.
Deliverables can include interactive 3D PDF models, screen shots, plan views and section views demonstrating
the protection solution achieving the required protection for your assets. The 3D drape is presented with
a transparency allowing you to see the assets through the drape.
Provide us with your existing 2D or 3D geometry to save time in creating the site model. We can accept
your data in a wide variety of CAD or vector formats, point clouds or products from reality modeling.
Rolling Sphere Method
The rolling sphere method uses an imaginary sphere of a defined radius over the surface
of a building or substation. The sphere rolls up and over (and is supported by) lightning
masts, shield wires, substation fences and other grounded metallic objects that can provide
shielding from lightning. A piece of equipment is said to be protected from a direct stroke
if it remains below the curved surface of the sphere.
Based on your site location and the assets your protecting, you will choose the level of
protection required. Our software allows you to select this level of protection prior to generating
the solution. The four levels offered under the Australian Standard for a ground based rolling sphere
radius includes 20, 30, 45 and 60 metres.
Protection of ground based assets can be achieved by locating lightning masts or shield wires
to intercept lightning strikes before they reach equipment or assets. Masts can be positioned to
draw away the current and direct it into an earth grid. The height and positions of masts can
be used to generate a zone of protection under a rolling sphere draped surface.
Under the Australian Standard AS1768:2007 the roof of a building is subject to a different
set of risks and calculations for lightning protection. Our software will calculate the
zone of protection in accordance to the guidelines. Masts and linear protection are both
supported, and you can even use a mix of both. The quick generation of the protection drape means
you can test many scenarios to work out which is best for your situation.