African Design Magazine ADM #36 December 2017 | Page 37

Protection for shelters (continued)
The purpose of shelters on golf courses is not only to protect golfers from
storms and rain, but also from lightning interference. An external lightning
protection system, in combination with feasible measures to reduce
inadmissibly high step and touch potentials at the entrance and in the
shelter, are required in case of a lightning strike.
Ÿ Protection for clubhouses
Regardless of whether an external lightning protection system exists, it is
recommended that a type 1 combined arrester be installed in the main low-
voltage distribution board.
In addition, the sub-distribution boards should be equipped with type 2
surge arresters. Telephone and data / internet access (Uk0 lines) usually
have a dedicated service room in a clubhouse, and this is where a type 1
combined arrester for IT equipment is installed for the Uk0 lines near the
entrance point into the building.
The network card should be protected by a surge arrester for LAN
connections and the power supply by a type 3 surge arrester.
Ÿ Caddy/ trolley shed with integrated driving range
Measures to avoid inadmissibly high step and touch voltages in case of
lightning interference are imperative, particularly in the case of highly
frequented entrances and shelter areas. Moreover, the same protection
measures as for the clubhouse or the caddy / trolley shed, must be taken for
the golf cart parking garage and the cart shed.
Ÿ Protecting the irrigation system
Water is mostly pumped from reservoirs, with pumps that are installed in
underground ducts and controlled and monitored from a service station.
The conductor and the magnetic valves provide the highest risk in terms of
surges and it is recommended that corresponding surge protective devices
should be installed.
Ÿ Protection for the service station
It depends on the building size as to whether further surge protection
measures are necessary for the internal conductors upstream of the
corresponding control systems, as lightning and surge protection have to be
individually adjusted to the natural and structural conditions.
To read further detail on the points above click here.
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