Hazardous areas and safety
Fibre optic cabling would be used to
extend the links to the server room,
with a fibre-to-copper media convert-
er installed in an enclosure alongside
the camera. The final copper run to
the camera would use STP (Shielded
Twisted Pair) cabling in order to
eliminate EMI and provide a clear
picture. A total of seven PTZ (Pan-
Tilt-Zoom) cameras were planned
for, which would give coverage of
the majority of devices in the yard.
Part of the requirements from
NamPower’s side was that no new
structures were to be erected in
the yards. For this reason it was
decided that these cameras would
be mounted atop existing light posts
that overlooked each of the yards, as
these would provide an overall bird’s
eye view that would allow operators
to easily identify and focus on rel-
evant components of the substation.
In October 2013, after a few
months of planning and designing of the system, the go ahead was
given to order the hardware and prepare the installation. Along with
Namibian based company Tesla Energy Solutions, H3iSquared trav-
A
bbreviations
NamPower is the national power
utility of Namibia and specialises
in the generation and transmission
of electricity. As an electricity
company NamPower understands
that electricity invariably plays
an important role in the socio-
economic development of Namibia.
NamPower's main sources of
power are the thermal, coal-fired
Van Eck Power Station outside
Windhoek, the hydroelectric plant
at the Ruacana Falls in the Kunene
Region, the standby diesel-driven
Paratus Power Station at Walvis
Bay and several interconnections
into the Southern African Power
Pool.
EMI – Electromagnetic Interference
IV&C – Industrial Video and Control
PTZ – Pan-Tilt-Zoom
SCADA – Supervisory Control And Data Acquisition
STP – Shielded Twisted Pair
21
December ‘13
Electricity+Control
